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Cheap flights from St. Louis to London Heathrow Airport from £270

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 30/7. 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.
STL — LHR
5 Jun — 12 Jun1
1 adult
Wed 5/6
Wed 12/6

The best prices from Lambert-St Louis to London Heathrow are usually found in February or January, booked 64 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from St. Louis to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Heathrow (LHR). 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 31 May 2024.

Popular in

June

Cheapest in

February

Average price

£803

Round-trip from

£68
High demand for flights, 39% potential price rise
Search Deals
Best time to find cheap flights, 20% potential price drop
Search Deals
Average for round-trip flights in May 2024
Search Deals
From Lambert-St Louis to London Heathrow
Search Deals

What is the cheapest day to fly round-trip from St. Louis to London Heathrow Airport?

Tuesday is generally a great day to depart. Flying on this day could help you save up to 28%.

How far in advance should I book a flight from St. Louis to London Heathrow Airport?

Users have found that booking a flight from St. Louis to London Heathrow Airport at least 10 days early can save you up to 50% on average compared to booking a flight this week. If booking 10 days before your flight isn’t an option for you, users have found flights from St. Louis to London Heathrow Airport for as little as £460 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as £737 for flights departing within the next 3 days.

What is the cheapest month to fly from St. Louis to London Heathrow Airport?

Our data shows that February tends to be the cheapest month to fly to London Heathrow Airport from St. Louis. Users have commonly found prices around £730 for the month, but tickets can be as low as £489. Due to multiple factors, prepare for potentially higher prices in June.

What is the cheapest time of day to fly from STL to LHR?

Unlike in the morning, when flights are generally more expensive, you can save up to 5% on flights from St. Louis to London Heathrow Airport by exploring options for tickets in the afternoon.

Cheap Air Canada flights from St. Louis to Heathrow

Explore cheap flight options specifically provided by Air Canada for the route between St. Louis and Heathrow. 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 908,271 searches. Data last updated 31 May 2024.
Consider these cheap Air Canada flights we've found departing from St. Louis to London. Deals update often to give you more flight options matching your criteria
Wed 25/910:10STL - LHR
2 stops14h 20mAir Canada
Tue 1/1014:05LHR - STL
1 stop13h 00mAir Canada
Deal found 30/5£502
Sun 15/912:00STL - LHR
1 stop12h 30mAir Canada
Thu 26/909:30LHR - STL
1 stop17h 35mAir Canada
Deal found 30/5£526
Sun 15/910:10STL - LHR
2 stops14h 20mAir Canada
Thu 26/914:05LHR - STL
1 stop13h 00mAir Canada
Deal found 30/5£529
Tue 10/910:10STL - LHR
2 stops17h 50mAir Canada
Tue 17/909:30LHR - STL
1 stop17h 35mAir Canada
Deal found 29/5£537
Fri 20/916:05STL - LHR
1 stop10h 30mAir Canada
Thu 26/909:30LHR - STL
1 stop17h 35mAir Canada
Deal found 31/5£541
Wed 18/910:10STL - LHR
1 stop14h 25mAir Canada
Tue 24/908:30LHR - STL
2 stops18h 35mAir Canada
Deal found 30/5£546
Wed 28/812:00STL - LHR
1 stop12h 30mAir Canada
Thu 12/912:05LHR - STL
1 stop15h 00mAir Canada
Deal found 31/5£580
Sat 5/1012:00STL - LHR
1 stop12h 30mAir Canada
Sun 13/1009:30LHR - STL
2 stops16h 30mAir Canada
Deal found 30/5£581
Fri 6/916:05STL - LHR
1 stop13h 45mAir Canada
Sat 14/908:30LHR - STL
1 stop12h 50mAir Canada
Deal found 31/5£613

Cheap American Airlines flights from St. Louis to Heathrow

Explore cheap flight options specifically provided by American Airlines for the route between St. Louis and Heathrow. 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 908,271 searches. Data last updated 31 May 2024.
Take a gander at the lowest prices we've found on American Airlines flights from St. Louis to London. Check back soon if you're not seeing flights that suit your needs.
Wed 4/918:10STL - LHR
1 stop12h 05mAmerican Airlines
Wed 18/909:15LHR - STL
1 stop16h 15mAmerican Airlines
Deal found 30/5£536
Fri 26/715:18STL - LHR
1 stop11h 47mAmerican Airlines
Thu 29/812:15LHR - STL
1 stop17h 08mAmerican Airlines
Deal found 30/5£573
Mon 15/715:18STL - LHR
1 stop14h 52mAmerican Airlines
Thu 25/709:35LHR - STL
1 stop14h 46mAmerican Airlines
Deal found 30/5£618
Thu 4/707:00STL - LHR
1 stop20h 05mAmerican Airlines
Tue 16/709:15LHR - STL
1 stop13h 41mAmerican Airlines
Deal found 29/5£656
Fri 19/715:18STL - LHR
1 stop11h 47mAmerican Airlines
Sat 27/710:05LHR - STL
1 stop13h 14mAmerican Airlines
Deal found 30/5£687
Thu 6/606:00STL - LHR
1 stop10h 10mAmerican Airlines
Sun 9/612:15LHR - STL
1 stop13h 14mAmerican Airlines
Deal found 30/5£694
Thu 6/606:11STL - LHR
1 stop19h 19mAmerican Airlines
Thu 13/609:15LHR - STL
1 stop16h 14mAmerican Airlines
Deal found 30/5£815
Fri 7/618:08STL - LHR
1 stop10h 12mAmerican Airlines
Wed 31/709:45LHR - STL
1 stop12h 27mAmerican Airlines
Deal found 31/5£925
Fri 7/617:38STL - LHR
1 stop32h 02mAmerican Airlines
Sun 23/609:35LHR - STL
1 stop14h 39mAmerican Airlines
Deal found 30/5£945

Cheap St. Louis to Heathrow flights in May & June 2024

Find cheap flight options from St. Louis to Heathrow specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 908,271 searches. Prices were last updated on 31 May 2024.
Check out some of the best flight deals from St. Louis to London in 2024. Check back regularly for other flight deals.
Wed 5/613:42STL - LHR
1 stop13h 58mMultiple Airlines
Wed 12/614:05LHR - STL
1 stop13h 00mMultiple Airlines
Deal found 31/5£611
Wed 5/609:05STL - LHR
1 stop18h 35mUnited Airlines
Wed 12/606:50LHR - STL
2 stops20h 54mUnited Airlines
Deal found 31/5£612
Wed 12/607:15STL - LHR
1 stop17h 10mDelta
Wed 19/606:15LHR - STL
2 stops16h 46mDelta
Deal found 31/5£613
Wed 12/611:25STL - LHR
2 stops16h 50mDelta
Wed 19/611:30LHR - STL
2 stops18h 13mDelta
Deal found 31/5£617
Wed 12/611:25STL - LHR
1 stop13h 20mKLM
Wed 19/615:55LHR - STL
1 stop13h 48mKLM
Deal found 31/5£619
Fri 31/512:50STL - LHR
2 stops15h 10mUnited Airlines
Tue 4/606:50LHR - STL
2 stops14h 51mUnited Airlines
Deal found 31/5£651
Sat 8/607:15STL - LHR
1 stop17h 10mDelta
Wed 19/606:15LHR - STL
2 stops16h 46mDelta
Deal found 31/5£652
Fri 31/518:12STL - LHR
2 stops12h 03mDelta
Wed 5/611:30LHR - STL
2 stops18h 10mDelta
Deal found 31/5£656
Fri 31/512:50STL - LHR
2 stops15h 10mUnited Airlines
Tue 4/610:35LHR - STL
1 stop17h 40mUnited Airlines
Deal found 31/5£658

St. Louis to Heathrow 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Heathrow in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 908,271 searches. Data last updated 31 May 2024.
Check out some of the best flight deals from St. Louis to London in 2024. Check back regularly for other flight deals.
Wed 25/906:02STL - LHR
2 stops18h 28mUnited Airlines
Tue 8/1014:05LHR - STL
2 stops30h 43mUnited Airlines
Deal found 31/5£492
Sun 1/1217:37STL - LHR
1 stop11h 38mUnited Airlines
Fri 31/115:00LHR - STL
2 stops25h 27mUnited Airlines
Deal found 31/5£496
Wed 25/906:15STL - LHR
1 stop23h 20mMultiple Airlines
Tue 8/1018:00LHR - STL
1 stop27h 20mMultiple Airlines
Deal found 31/5£496
Wed 25/906:02STL - LHR
2 stops18h 28mUnited Airlines
Tue 8/1014:05LHR - STL
1 stop13h 00mUnited Airlines
Deal found 31/5£501
Wed 25/916:05STL - LHR
1 stop13h 45mAir Canada
Tue 8/1009:30LHR - STL
1 stop17h 35mAir Canada
Deal found 31/5£502
Wed 9/1011:51STL - LHR
1 stop12h 34mDelta
Wed 23/1006:15LHR - STL
2 stops16h 36mDelta
Deal found 31/5£504
Sun 1/1206:30STL - LHR
1 stop17h 25mMultiple Airlines
Fri 31/106:30LHR - STL
1 stop13h 25mMultiple Airlines
Deal found 31/5£504
Wed 25/906:00STL - LHR
1 stop18h 25mDelta
Tue 1/1009:55LHR - STL
2 stops16h 36mDelta
Deal found 31/5£505
Wed 9/1010:00STL - LHR
2 stops24h 00mMultiple Airlines
Wed 23/1006:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 31/5£506

St. Louis to Heathrow flights leaving soon

Find last-minute flight options from St. Louis to Heathrow 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 908,271 searches. Data last updated 31 May 2024.
Have a look at some of the last-minute flights available departing from St. Louis to London. Users should examine the flight details to ensure there are no surprises.
Wed 5/606:15STL - LHR
1 stop19h 25mUnited Airlines
Wed 12/606:55LHR - STL
2 stops19h 30mUnited Airlines
Deal found 30/5£608
Wed 5/611:15STL - LHR
1 stop14h 25mMultiple Airlines
Wed 12/609:30LHR - STL
1 stop17h 35mMultiple Airlines
Deal found 30/5£611
Wed 5/609:05STL - LHR
1 stop18h 35mUnited Airlines
Wed 12/606:50LHR - STL
2 stops20h 54mUnited Airlines
Deal found 31/5£612
Sat 8/616:45STL - LHR
1 stop34h 55mUnited Airlines
Wed 19/609:30LHR - STL
1 stop12h 28mUnited Airlines
Deal found 30/5£625
Wed 5/611:15STL - LHR
1 stop14h 25mUnited Airlines
Tue 18/613:40LHR - STL
1 stop14h 35mUnited Airlines
Deal found 30/5£631
Thu 6/616:55STL - LHR
1 stop32h 45mUnited Airlines
Thu 13/609:30LHR - STL
1 stop17h 35mUnited Airlines
Deal found 30/5£647
Wed 5/611:15STL - LHR
1 stop14h 25mUnited Airlines
Sun 9/606:50LHR - STL
2 stops14h 51mUnited Airlines
Deal found 30/5£651
Sat 8/607:15STL - LHR
1 stop17h 10mDelta
Wed 19/606:15LHR - STL
2 stops16h 46mDelta
Deal found 31/5£652
Sat 8/611:25STL - LHR
2 stops16h 50mDelta
Wed 19/611:30LHR - STL
2 stops18h 13mDelta
Deal found 31/5£656

One-way flights to Heathrow from St. Louis

Search for one-way flight options from St. Louis to Heathrow. 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 908,271 searches. Data last updated 31 May 2024.
If you're seeking multiple options on one-way flights from St. Louis to London, be sure to check out these deals, which are updated often. Those seeking round-trip flights from St. Louis to London should utilise the search form at the top of the page.
Tue 30/710:11STL - LHR
3 stops28h 09mMultiple Airlines
Deal found 30/5£270
Tue 16/710:11STL - LHR
3 stops19h 44mMultiple Airlines
Deal found 30/5£280
Wed 17/712:15STL - LHR
3 stops17h 40mMultiple Airlines
Deal found 30/5£310
Tue 13/810:11STL - LHR
3 stops19h 44mMultiple Airlines
Deal found 31/5£323
Sun 11/818:15STL - LHR
3 stops35h 40mMultiple Airlines
Deal found 31/5£328
Wed 31/712:15STL - LHR
3 stops26h 05mMultiple Airlines
Deal found 30/5£329
Mon 12/812:15STL - LHR
3 stops26h 05mMultiple Airlines
Deal found 31/5£330
Mon 19/812:15STL - LHR
3 stops26h 05mMultiple Airlines
Deal found 31/5£331
Thu 1/812:15STL - LHR
3 stops26h 05mMultiple Airlines
Deal found 30/5£368

Find flights from St. Louis to Heathrow within your budget

Customise your flight search to find flights from St. Louis to Heathrow 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 908,271 searches. Data last updated 31 May 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£492 - £633

Route

Depart

Return

Price

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 25/9

1 stop12h 34m

London Heathrow

Tue 1/10

2 stops30h 43m

£492

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 25/9

1 stop23h 20m

London Heathrow

Tue 8/10

1 stop27h 20m

£496

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 25/9

2 stops14h 20m

London Heathrow

Tue 1/10

1 stop13h 00m

£502

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 9/10

1 stop12h 34m

London Heathrow

Wed 23/10

2 stops16h 36m

£504

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 25/9

2 stops13h 55m

London Heathrow

Tue 8/10

2 stops15h 14m

£512

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Mon 9/9

1 stop10h 06m

London Heathrow

Mon 16/9

2 stops26h 22m

£522

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 4/9

1 stop12h 05m

London Heathrow

Wed 18/9

1 stop16h 15m

£536

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 18/9

1 stop14h 25m

London Heathrow

Tue 24/9

2 stops19h 43m

£552

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Sun 7/7

1 stop10h 11m

London Heathrow

Fri 9/8

1 stop13h 32m

£633

Flights are sorted by cheapest first

Deals found on 31/5

What is the cheapest day to fly from St. Louis to London Heathrow Airport?

Use this chart to determine the cheapest time to fly return from St. Louis to Heathrow. Price data was last updated on 26 May 2024.
Morning
Midday
Afternoon
Evening
All times are departure.
Travellers seeking maximum savings on their St. Louis to London Heathrow Airport flight should consider departing on Wednesday at midday when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from St. Louis to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from St. Louis with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Temperature and rainfall in Heathrow by month

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

LON

Temperature

4 - 17 °C

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 31 May 2024.
Read reviews from past customers who have flown Air Canada, American Airlines and United Airlines from St. Louis to London. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
10,419 reviews
Check prices

Boarding

8.2

Entertainment

8.0

Food

7.4

Comfort

7.9

Crew

8.6

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Delta
8.0
Very Good
10,419 reviews
Delta
8.0
Very Good
10,419 reviews
Check prices

Boarding

8.2

Entertainment

8.0

Food

7.4

Comfort

7.9

Crew

8.6

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

KLM
7.9
Good
1,516 reviews
Delta
8.0
Very Good
10,419 reviews
Check prices

Boarding

8.2

Entertainment

8.0

Food

7.4

Comfort

7.9

Crew

8.6

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Finnair
7.8
Good
1,369 reviews
Delta
8.0
Very Good
10,419 reviews
Check prices

Boarding

8.2

Entertainment

8.0

Food

7.4

Comfort

7.9

Crew

8.6

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Austrian Airlines
7.7
Good
1,019 reviews
Delta
8.0
Very Good
10,419 reviews
Check prices

Boarding

8.2

Entertainment

8.0

Food

7.4

Comfort

7.9

Crew

8.6

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Virgin Atlantic
7.6
Good
720 reviews
Delta
8.0
Very Good
10,419 reviews
Check prices

Boarding

8.2

Entertainment

8.0

Food

7.4

Comfort

7.9

Crew

8.6

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Heathrow. 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 from for flights from St. Louis to London Heathrow?

    Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to London Heathrow. You should not have trouble finding flights to London Heathrow from Lambert-St Louis; the airport handles an average of 0 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 3 airlines have flights from the St. Louis airport to London Heathrow. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

  • Can I find flights from St. Louis to London Heathrow Airport for under £500 on Cheapflights?

    Yes, there are multiple flights from St. Louis to London Heathrow Airport for under £500. The cheapest flight booked recently is on United Airlines for just £492, but on average you can expect to pay £511.

  • Are there last-minute flights available from St. Louis to London Heathrow Airport for under £700?

    There are currently 20+ open flights from St. Louis to London Heathrow Airport within the next 7 days for less than £700.

  • What are the cheapest airlines flying from St. Louis to London Heathrow Airport round-trip?

    United Airlines, at £492, was found to be the cheapest airline from St. Louis to London Heathrow Airport.Alternate airlines flying return to your destination include Air Canada and Delta. You may be able to fly from St. Louis to London Heathrow Airport for 29% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from St. Louis to London Heathrow Airport one-way?

    The cheapest airline one-way is Austrian Airlines, with whom users have recently found tickets for as low as £386. However, be on the lookout for offers from Iberia and American Airlines, as they are both options that can get you from St. Louis to London Heathrow Airport for a low price.

  • What does STL to LHR mean?

    This is defined as Lambert-St Louis Airport (STL) and London Heathrow Airport (LHR). Codes like London Heathrow Airport are often used to just call airports uniquely.

  • Can I find deals for flights from St. Louis to Heathrow that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Heathrow 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 St. Louis to Heathrow with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Heathrow 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 St. Louis to Heathrow that include hotel bookings?

    Yes. In addition to deals on St. Louis to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Heathrow?

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

  • Can I find deals for business class flights from St. Louis to Heathrow?

    Yes. Cheapflights offers flight deals from St. Louis to Heathrow 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 St. Louis to Heathrow that allow pets onboard?

    Many airlines flying from St. Louis to Heathrow 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 St. Louis to Heathrow?

    Yes, you can often find last-minute deals on St. Louis to Heathrow 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 St. Louis to London Heathrow Airport flight deals updated?

    The St. Louis to London Heathrow Airport flight deals you see on this page were last updated on 31/5.

  • What are the most popular airlines that fly from St. Louis to London Heathrow Airport?

    Consider British Airways, United Airlines or Virgin Atlantic when booking your flight. These represent the most popular airlines when flying from St. Louis to London Heathrow Airport.

  • What is the cheapest month to book a flight from St. Louis to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to London Heathrow Airport (average of £110). Flying from St. Louis to London Heathrow Airport in June is currently the most expensive (average of £162). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 3 airlines flying from St. Louis to Heathrow

Discover the top 3 airlines that operate flights from St. Louis to Heathrow. 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 908,271 searches. Data last updated 31 May 2024.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£436Average£600FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£487Average£609FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£535Average£569FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
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St. Louis to London flights

Search flights from St. Louis to Heathrow by cabin class

Find flights from St. Louis to Heathrow, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy class

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Can Cheapflights notify me if prices for flights from St. Louis to Heathrow become cheaper?

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