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Cheap flights from London to Seattle from £204

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
LON — SEA
21 May — 28 May1
1 adult
Tue 21/5
Tue 28/5

The best prices from London to Seattle/Tacoma Intl are usually found in November or February, booked 43 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap flight deals from London to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 16 May 2024.

Popular in

July

Cheapest in

November

Round-trip from

£462

One-way from

£204
High demand for flights, 23% potential price rise
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Best time to find cheap flights, 18% potential price drop
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From London (LON) to Seattle/Tacoma Intl
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One-way flight from London (LON) to Seattle/Tacoma Intl
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What is the cheapest day to fly round-trip from London to Seattle?

Leaving on a Tuesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 16% on the overall cost on flights from London to Seattle.

How far in advance should I book a flight from London to Seattle?

Travelers have found it’s best to book a flight 44 days in advance to save up to 35% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 44 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from London to Seattle 1-2 weeks in advance for as low as £533, or £732 for flights within the next 24 hours.

What is the cheapest month to fly from London to Seattle?

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, November can be a great choice for travel to Seattle. Flights to Seattle from London in November are about £550 on average during November, but can be found for as low as £302.

When is the cheapest time to fly from London to Seattle (LON - SEA)?

Unlike in the afternoon, when flights are generally more expensive, you can save up to 8% on flights from London to Seattle by exploring options for tickets in the evening.

Cheap Icelandair flights from London to Seattle

Explore cheap flight options specifically provided by Icelandair for the route between London and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 849,850 searches. Data last updated 16 May 2024.
Check out some of the cheapest Icelandair flights we've come across from London to Seattle. Be sure to come back soon if the deals available don't appeal to you at this time.
Wed 11/913:00LGW - SEA
1 stop15h 35mIcelandair
Tue 24/918:55SEA - LGW
1 stop32h 50mIcelandair
Deal found 15/5£412
Wed 11/921:25LHR - SEA
1 stop31h 10mIcelandair
Tue 24/918:55SEA - LHR
1 stop17h 25mIcelandair
Deal found 15/5£414
Thu 5/913:00LGW - SEA
1 stop30h 20mIcelandair
Thu 12/918:55SEA - LGW
1 stop32h 50mIcelandair
Deal found 15/5£416
Thu 5/921:25LHR - SEA
1 stop21h 55mIcelandair
Thu 12/918:55SEA - LHR
1 stop33h 00mIcelandair
Deal found 15/5£416
Thu 3/1013:00LGW - SEA
1 stop15h 35mIcelandair
Tue 8/1015:50SEA - LGW
1 stop11h 55mIcelandair
Deal found 15/5£419
Tue 1/1013:00LGW - SEA
1 stop15h 35mIcelandair
Tue 5/1114:35SEA - LGW
1 stop12h 20mIcelandair
Deal found 15/5£419
Thu 3/1013:10LHR - SEA
1 stop15h 25mIcelandair
Tue 8/1015:50SEA - LHR
1 stop12h 05mIcelandair
Deal found 15/5£420
Mon 2/921:25LHR - SEA
1 stop21h 55mIcelandair
Sat 7/923:00SEA - LHR
1 stop13h 20mIcelandair
Deal found 15/5£423
Thu 12/913:00LGW - SEA
1 stop15h 35mIcelandair
Sun 22/918:55SEA - LGW
1 stop32h 50mIcelandair
Deal found 15/5£424

  • Icelandair is one of the most popular airlines used for those travelling from London to Seattle. Flights from Icelandair travelling this route typically cost £619.82 RT. This price is typically 67% more expensive than other airlines that offer London to Seattle flights. When booking this route, the cheapest RT price found was £323. The most popular departure airport in London when flying to Seattle is London Heathrow Airport. The most popular airport to fly into when visiting Seattle is Seattle/Tacoma Intl Airport. When flying from London to Seattle, Icelandair flights are 7% more popular than any other airline flying that same route.

Cheap British Airways flights from London to Seattle

Explore cheap flight options specifically provided by British Airways for the route between London and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 849,850 searches. Data last updated 16 May 2024.
Browse through some of the cheapest British Airways flights travelling from London to Seattle. Ensure the flight price, dates, time, and airline match your criteria before you book.
Tue 1/1009:50LHR - SEA
Nonstop9h 45mBritish Airways
Tue 5/1118:45SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 15/5£470
Tue 8/1009:50LHR - SEA
Nonstop9h 45mBritish Airways
Tue 29/1007:50SEA - LHR
1 stop15h 30mBritish Airways
Deal found 15/5£473
Tue 1/1009:50LHR - SEA
Nonstop9h 45mBritish Airways
Thu 10/1019:40SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 15/5£495
Thu 3/1009:45LHR - SEA
Nonstop9h 45mBritish Airways
Thu 10/1019:40SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 15/5£510
Tue 1/1009:50LHR - SEA
Nonstop9h 45mBritish Airways
Tue 8/1019:40SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 15/5£523
Fri 4/1009:50LHR - SEA
Nonstop9h 45mBritish Airways
Tue 8/1019:40SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 15/5£538
Thu 3/1009:45LHR - SEA
Nonstop9h 45mBritish Airways
Mon 7/1013:30SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 15/5£568
Tue 28/509:50LHR - SEA
Nonstop9h 45mBritish Airways
Tue 4/613:30SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 15/5£591
Thu 6/609:45LHR - SEA
Nonstop9h 45mBritish Airways
Wed 12/613:25SEA - LHR
1 stop12h 55mBritish Airways
Deal found 15/5£595

  • If you’re travelling from London to Seattle, one of the more common airlines travelling that route is British Airways. Flights from British Airways travelling this route typically cost £777.23 RT. This price is typically 60% cheaper than other airlines that offer London to Seattle flights. When booking this route, the cheapest RT price found was £560. When travelling from London to Seattle on British Airways, the most popular airport to depart from is London Heathrow Airport and the most popular airport to arrive at is Seattle/Tacoma Intl Airport. When flying from London to Seattle, British Airways flights are 4% more popular than any other airline flying that same route.

Cheap London to Seattle flights in May & June 2024

Find cheap flight options from London to Seattle specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 849,850 searches. Prices were last updated on 16 May 2024.
These are some of the best deals we've found on flights to Seattle in 2024 at this time. More deals are always being added, so be sure to check back regularly.
Mon 3/621:25LHR - SEA
1 stop21h 55mIcelandair
Mon 10/623:00SEA - LHR
1 stop28h 55mIcelandair
Deal found 15/5£489
Tue 28/521:25LHR - SEA
1 stop21h 55mIcelandair
Mon 3/623:00SEA - LHR
1 stop13h 20mIcelandair
Deal found 15/5£490
Tue 11/613:00LGW - SEA
1 stop30h 20mIcelandair
Mon 24/623:00SEA - LGW
1 stop28h 45mIcelandair
Deal found 15/5£494
Tue 4/621:25LHR - SEA
1 stop28h 15mIcelandair
Tue 11/623:00SEA - LHR
1 stop13h 20mIcelandair
Deal found 15/5£494
Tue 11/621:25LHR - SEA
1 stop28h 15mIcelandair
Mon 24/623:00SEA - LHR
1 stop28h 55mIcelandair
Deal found 15/5£495
Mon 10/613:00LGW - SEA
1 stop12h 40mIcelandair
Mon 17/623:00SEA - LGW
1 stop28h 45mIcelandair
Deal found 15/5£511
Fri 31/513:00LGW - SEA
1 stop15h 35mIcelandair
Tue 11/623:00SEA - LGW
1 stop28h 45mIcelandair
Deal found 15/5£511
Mon 3/613:00LGW - SEA
1 stop30h 20mIcelandair
Mon 10/618:55SEA - LGW
1 stop32h 50mIcelandair
Deal found 15/5£512
Sun 16/621:25LHR - SEA
1 stop21h 55mIcelandair
Mon 24/623:00SEA - LHR
1 stop28h 55mIcelandair
Deal found 15/5£512

London to Seattle 2024 flight deals

Discover exclusive flight deals for travel between London and Seattle in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 849,850 searches. Data last updated 16 May 2024.
These are some of the best deals we've found on flights to Seattle in 2024 at this time. More deals are always being added, so be sure to check back regularly.
Wed 11/913:00LGW - SEA
1 stop15h 35mIcelandair
Tue 24/918:55SEA - LGW
1 stop32h 50mIcelandair
Deal found 15/5£412
Tue 1/1021:25LHR - SEA
1 stop28h 30mIcelandair
Tue 5/1114:35SEA - LHR
1 stop20h 45mIcelandair
Deal found 15/5£412
Wed 11/921:25LHR - SEA
1 stop31h 10mIcelandair
Tue 24/918:55SEA - LHR
1 stop17h 25mIcelandair
Deal found 15/5£414
Thu 5/913:00LGW - SEA
1 stop30h 20mIcelandair
Thu 12/918:55SEA - LGW
1 stop32h 50mIcelandair
Deal found 15/5£416
Thu 5/921:25LHR - SEA
1 stop21h 55mIcelandair
Thu 12/918:55SEA - LHR
1 stop33h 00mIcelandair
Deal found 15/5£416
Thu 3/1013:00LGW - SEA
1 stop15h 35mIcelandair
Tue 8/1015:50SEA - LGW
1 stop11h 55mIcelandair
Deal found 15/5£419
Tue 1/1013:00LGW - SEA
1 stop15h 35mIcelandair
Tue 5/1114:35SEA - LGW
1 stop12h 20mIcelandair
Deal found 15/5£419
Thu 3/1013:10LHR - SEA
1 stop15h 25mIcelandair
Tue 8/1015:50SEA - LHR
1 stop12h 05mIcelandair
Deal found 15/5£420
Mon 2/921:25LHR - SEA
1 stop21h 55mIcelandair
Sat 7/923:00SEA - LHR
1 stop13h 20mIcelandair
Deal found 15/5£423

Direct flights to Seattle from London

Discover direct flight options from London to Seattle. Find direct flights with no stopovers, providing a convenient travel experience. Explore direct flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 849,850 searches. Data last updated 16 May 2024.
If you're seeking options on non-stop flights from London to Seattle, check out these fares. Those looking to potentially save on 1 or 2-stop flights from London to Seattle should utilise the search form at the top of the page.
Tue 1/1009:50LHR - SEA
Nonstop9h 45mBritish Airways
Tue 5/1118:45SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 15/5£470
Tue 22/1009:50LHR - SEA
Nonstop9h 45mFinnair
Thu 31/1019:45SEA - LHR
Nonstop9h 20mFinnair
Deal found 15/5£471
Tue 8/1016:00LHR - SEA
Nonstop9h 45mBritish Airways
Tue 29/1019:45SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 15/5£473
Mon 16/912:45LHR - SEA
Nonstop9h 55mVirgin Atlantic
Mon 23/916:30SEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 15/5£488
Tue 22/1016:00LHR - SEA
Nonstop9h 45mBritish Airways
Sat 2/1114:45SEA - LHR
Nonstop9h 25mBritish Airways
Deal found 16/5£491
Tue 1/1009:50LHR - SEA
Nonstop9h 45mBritish Airways
Wed 9/1019:40SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 15/5£495
Sun 29/916:00LHR - SEA
Nonstop9h 45mFinnair
Tue 15/1019:40SEA - LHR
Nonstop9h 20mFinnair
Deal found 15/5£507
Thu 3/1009:45LHR - SEA
Nonstop9h 45mIberia
Tue 8/1019:40SEA - LHR
Nonstop9h 20mIberia
Deal found 15/5£508
Thu 3/1009:45LHR - SEA
Nonstop9h 45mBritish Airways
Thu 10/1019:40SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 15/5£510

London to Seattle flights leaving soon

Find last-minute flight options from London to Seattle for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 849,850 searches. Data last updated 16 May 2024.
Consider one of these great deals we found on last-minute flights from London to Seattle. To prevent any unwanted surprises, users should verify their flight info before booking.
Tue 21/506:50LHR - SEA
2 stops23h 40mUnited Airlines
Tue 28/514:22SEA - LHR
1 stop13h 58mUnited Airlines
Deal found 14/5£557
Tue 21/511:15LHR - SEA
1 stop17h 35mAmerican Airlines
Tue 28/512:09SEA - LHR
1 stop16h 01mAmerican Airlines
Deal found 14/5£563
Tue 21/511:15LHR - SEA
1 stop17h 35mAmerican Airlines
Mon 27/501:15SEA - LHR
1 stop21h 10mAmerican Airlines
Deal found 14/5£582
Tue 21/510:30LHR - SEA
2 stops18h 05mAmerican Airlines
Tue 28/506:00SEA - LHR
2 stops17h 45mAmerican Airlines
Deal found 14/5£584
Tue 21/508:10LHR - SEA
2 stops21h 40mAmerican Airlines
Mon 27/501:15SEA - LHR
1 stop21h 10mAmerican Airlines
Deal found 14/5£585
Tue 21/511:15LHR - SEA
1 stop17h 35mAmerican Airlines
Tue 28/513:30SEA - LHR
Nonstop9h 20mAmerican Airlines
Deal found 14/5£588
Wed 22/513:00LGW - SEA
1 stop12h 40mIcelandair
Wed 29/515:50SEA - LGW
1 stop11h 55mIcelandair
Deal found 15/5£599
Thu 23/513:10LHR - SEA
1 stop17h 58mFinnair
Mon 3/606:00SEA - LHR
1 stop19h 05mFinnair
Deal found 15/5£605
Thu 23/515:35LHR - SEA
1 stop15h 33mFinnair
Mon 3/619:40SEA - LHR
Nonstop9h 20mFinnair
Deal found 15/5£605

One-way flights to Seattle from London

Search for one-way flight options from London to Seattle. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 849,850 searches. Data last updated 16 May 2024.
Take a look at some of the one-way flights we've detected from London to Seattle. Users can also find round-trip London to Seattle flights by using the search form above.
Tue 8/1012:00LGW - SEA
1 stop16h 21mMultiple Airlines
Deal found 15/5£204
Tue 29/1012:00LGW - SEA
1 stop29h 48mMultiple Airlines
Deal found 15/5£210
Tue 8/1012:00LGW - SEA
1 stop15h 01mMultiple Airlines
Deal found 15/5£222
Mon 3/620:50LGW - SEA
3 stops43h 42mMultiple Airlines
Deal found 15/5£230
Thu 10/1012:00LGW - SEA
1 stop15h 01mMultiple Airlines
Deal found 15/5£245
Tue 11/610:00LGW - SEA
2 stops30h 32mMultiple Airlines
Deal found 15/5£250
Mon 3/620:50LGW - SEA
2 stops44h 07mMultiple Airlines
Deal found 15/5£253
Mon 10/620:50LGW - SEA
3 stops55h 19mMultiple Airlines
Deal found 15/5£256
Wed 4/910:45LGW - SEA
2 stops17h 36mMultiple Airlines
Deal found 15/5£259

Find flights from London to Seattle within your budget

Customise your flight search to find flights from London to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 849,850 searches. Data last updated 16 May 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£412 - £539

Route

Depart

Return

Price

London GatwickSeattle/Tacoma Intl

LGW - SEA

LGWSEA

London Gatwick

Wed 11/9

1 stop15h 35m

Seattle/Tacoma Intl

Tue 24/9

1 stop32h 50m

£412

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Tue 1/10

Nonstop9h 45m

Seattle/Tacoma Intl

Tue 5/11

Nonstop9h 20m

£470

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Tue 22/10

Nonstop9h 45m

Seattle/Tacoma Intl

Thu 31/10

Nonstop9h 20m

£471

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 16/9

Nonstop9h 55m

Seattle/Tacoma Intl

Mon 23/9

1 stop15h 45m

£484

London GatwickSeattle/Tacoma Intl

LGW - SEA

LGWSEA

London Gatwick

Thu 31/10

2 stops28h 39m

Seattle/Tacoma Intl

Mon 4/11

2 stops24h 20m

£488

London GatwickSeattle/Tacoma Intl

LGW - SEA

LGWSEA

London Gatwick

Wed 11/9

2 stops17h 36m

Seattle/Tacoma Intl

Tue 24/9

1 stop32h 50m

£495

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Sat 2/11

2 stops28h 01m

Seattle/Tacoma Intl

Sun 3/11

1 stop13h 44m

£497

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Thu 3/10

Nonstop9h 45m

Seattle/Tacoma Intl

Mon 7/10

1 stop14h 04m

£526

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Sat 1/6

1 stop34h 06m

Seattle/Tacoma Intl

Mon 3/6

1 stop34h 00m

£539

Flights are sorted by cheapest first

Deals found on 15/5

When is the best time to book a flight from London to Seattle?

Use this chart to determine the optimal time to book a return flight from London to Seattle. Price data was last updated on 10 May 2024.
Booking 43 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Search Deals

When is the cheapest time to fly from London to Seattle?

Use this chart to determine the cheapest time to fly return from London to Seattle. Price data was last updated on 12 May 2024.
Morning
Midday
Afternoon
Evening
All times are departure.
Travellers seeking maximum savings on their London to Seattle flight should consider departing on Thursday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
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Average price of flights to Seattle by month

Plan your trip from London to Seattle by taking into account the cheapest months to travel. The average price of a one-way flight from London to Seattle is currently £237 while a return flight costs £487. Price data was last updated on 12 May 2024.

Currently, December is the cheapest month in which you can book a flight from London to Seattle (average of £583). Flying from London to Seattle in July is currently the most expensive (average of £799). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

£483

February

£470

March

£500

April

£514

May

£533

June

£605

July

£632

August

£607

September

£541

October

£519

November

£474

December

£461

Temperature and rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average temperature and rainfall totals by month.

SEA

Temperature

5 - 19 °C

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated 16 May 2024.
Read through reviews of airlines operating flights from London to Seattle, such as Icelandair, British Airways and Finnair. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
10,691 reviews
Check prices

Food

7.4

Comfort

7.9

Crew

8.6

Entertainment

8.0

Overall

8.0

Boarding

8.2

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Delta
8.0
Very Good
10,691 reviews
Delta
8.0
Very Good
10,691 reviews
Check prices

Food

7.4

Comfort

7.9

Crew

8.6

Entertainment

8.0

Overall

8.0

Boarding

8.2

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

KLM
7.9
Good
1,568 reviews
Delta
8.0
Very Good
10,691 reviews
Check prices

Food

7.4

Comfort

7.9

Crew

8.6

Entertainment

8.0

Overall

8.0

Boarding

8.2

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

SWISS
7.8
Good
1,996 reviews
Delta
8.0
Very Good
10,691 reviews
Check prices

Food

7.4

Comfort

7.9

Crew

8.6

Entertainment

8.0

Overall

8.0

Boarding

8.2

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Finnair
7.8
Good
1,378 reviews
Delta
8.0
Very Good
10,691 reviews
Check prices

Food

7.4

Comfort

7.9

Crew

8.6

Entertainment

8.0

Overall

8.0

Boarding

8.2

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Virgin Atlantic
7.7
Good
736 reviews
Delta
8.0
Very Good
10,691 reviews
Check prices

Food

7.4

Comfort

7.9

Crew

8.6

Entertainment

8.0

Overall

8.0

Boarding

8.2

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Related info for your journey

Find useful and relevant information for your journey from London to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Seattle from London?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Seattle from London. Booking flights from London to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 21 daily inbound flights from London from 14 different airlines.

  • Can I find flights from London to Seattle for under £500 on Cheapflights?

    Yes, there are multiple flights from London to Seattle for under £500. The cheapest flight booked recently is on Icelandair for just £412, but on average you can expect to pay £427.

  • Are there nonstop flights from London to Seattle for under £500 on Cheapflights?

    Cheapflights has at least 20 direct flights from London to Seattle under £500. A good price for a nonstop flight from London to Seattle is less than £517.

  • Are there last-minute flights available from London to Seattle for under £600?

    There are currently 20+ open flights from London to Seattle within the next 7 days for less than £600.

  • What are the cheapest airlines flying from London to Seattle round-trip?

    Icelandair, at £412, was found to be the cheapest airline from London to Seattle.Alternate airlines flying return to your destination include British Airways and Finnair. Icelandair is priced at 24% lower than the current average price of a flight leaving 3 months from now.

  • What are the most popular routes from London to Seattle?

    When deciding which route to take from London to Seattle consider London Heathrow - Seattle/Tacoma Intl, London Gatwick - Seattle/Tacoma Intl or London City - Seattle/Tacoma Intl as they are the most popular.

  • What are the most popular airlines that fly from London to Seattle?

    Before booking your flight from London to Seattle check out the most popular airlines for this route: American Airlines, Air Canada or Air France.

  • What are the most reliable airlines from London to Seattle?

    Consider Air France (77%), Delta (77%) or Virgin Atlantic (77%) when booking your flight. These represent the most reliable airlines when flying from London to Seattle.

  • What are the cheapest flights from London to Seattle?

    On average you can expect to pay £2,271 for a flight from London to Seattle. The cheapest flight overall is £498 while the most popular route, (London Heathrow - Seattle/Tacoma Intl) is currently priced at £435.

  • What does LHR to SEA mean?

    London Heathrow Airport is LHR and Seattle/Tacoma Intl Airport is SEA. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are London Gatwick Airport (LGW), London Stansted Airport (STN), London Luton Airport (LTN), London City Airport (LCY), London Southend Airport (SEN).

  • Can I find deals for flights from London to Seattle that include extra baggage allowance?

    The amount of baggage you can bring on your London to Seattle flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from London to Seattle with specific airlines?

    Yes, Cheapflights allows you to browse and filter London to Seattle flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from London to Seattle that include hotel bookings?

    Yes. In addition to deals on London to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Seattle.

  • Can I find deals for business class flights from London to Seattle?

    Yes. Cheapflights offers flight deals from London to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from London to Seattle that allow pets onboard?

    Many airlines flying from London to Seattle offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from London to Seattle?

    Yes, you can often find last-minute deals on London to Seattle flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the London to Seattle flight deals updated?

    The London to Seattle flight deals you see on this page were last updated on 15/5.

See more FAQs

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Fly from London to Seattle on these airlines
Choose from the following airlines for your flight from London to Seattle. Flights are based on user searches made on Cheapflights and were last updated on 16 May 2024.

Virgin Atlantic flights from London to Seattle/Tacoma Intl
British Airways flights from London to Seattle/Tacoma Intl
Finnair flights from London to Seattle/Tacoma Intl

Top 10 airlines flying from London to Seattle

Discover the top 10 airlines that operate flights from London to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 849,850 searches. Data last updated 16 May 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£255Average£491FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
British AirwaysCheapest£339Average£523FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£391Average£612FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
IcelandairCheapest£396Average£565FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air CanadaCheapest£428Average£505FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
American AirlinesCheapest£432Average£581FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
LufthansaCheapest£440Average£574FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£441Average£512FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£443Average£615FlexibilityNo cancel feeOn-time75%
Search KLM flights
FinnairCheapest£445Average£581FlexibilityNo cancel feeOn-time76%
Search Finnair flights
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Search flights from London to Seattle by cabin class

Find flights from London to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Hourly flight availability from London to Seattle

Find hourly flight availability from London to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 May 2024.
1%of flight departuresEarly morningMidnight to 6 am
43%of flight departuresMorning6 am to noon
56%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
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6 AM
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6 PM

Weekly flight availability from London to Seattle

Explore weekly flight availability from London to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 16 May 2024.
Monday20daily flights
Tuesday24daily flights
Wednesday20daily flights
Thursday20daily flights
Friday20daily flights
Saturday25daily flights
Sunday20daily flights

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How does Cheapflights help users find flights from London to Seattle?

Cheapflights makes it easy to find London to Seattle flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from London to Seattle?

Millions of users choose and trust Cheapflights to book the best flight deals from London to Seattle for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from London to Seattle with no change fees?

Certainly. Search results for flights to Seattle from London shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from London to Seattle become cheaper?

Yes, Cheapflights offers price alerts on London to Seattle flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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