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Cheap flights to Illinois from £173

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 4/6. 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.
CMH — ORD
21 May — 28 May1
1 adult
Tue 21/5
Tue 28/5

Flights to Illinois in 2024

Find the latest flights to Illinois in 2024, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 849,850 searches and data was last updated on 16 May 2024.

Popular in

July

Cheapest in

February

Average price

£543

Return from

£368

One-way from

£173
High demand for flights, 17% potential price rise
Best time to find cheap flights, 2% potential price drop
Average for return flights in May 2024
From London to Chicago
One-way flight from London to Illinois

Find flights to Illinois

Browse one-way and return flights deals to Illinois on Cheapflights. Flight deals are based on user searches and were last updated on 16 May 2024
Explore Illinois

Cheap flights to Illinois in May & June 2024

Search the best deals to popular Illinois cities recently found by Cheapflights users
The deals listed below are some of the cheapest flights available to Illinois in May and June 2024. Prices refresh often so be sure to come back soon for more deals.
Cheap flights to Chicago, Illinois
Tue 11/610:00LGW - MDW
1 stop27h 31mMultiple Airlines
Tue 9/719:37MDW - LGW
1 stop29h 23mMultiple Airlines
Deal found 15/5£370
Wed 5/610:00LGW - ORD
1 stop29h 04mMultiple Airlines
Tue 9/720:50ORD - LGW
1 stop28h 10mMultiple Airlines
Deal found 15/5£373
Fri 31/520:30LHR - ORD
1 stop27h 25mScandinavian Airlines
Mon 3/619:45ORD - LHR
1 stop14h 15mScandinavian Airlines
Deal found 15/5£378
Thu 6/610:00LGW - MDW
1 stop17h 56mMultiple Airlines
Tue 9/719:37MDW - LGW
1 stop29h 23mMultiple Airlines
Deal found 15/5£379
Fri 31/515:35LHR - ORD
2 stops32h 20mScandinavian Airlines
Mon 3/619:45ORD - LHR
1 stop14h 15mScandinavian Airlines
Deal found 15/5£381
Wed 5/609:55LHR - ORD
1 stop14h 00mScandinavian Airlines
Mon 10/619:45ORD - LHR
1 stop14h 15mScandinavian Airlines
Deal found 15/5£383
Thu 6/610:00LGW - ORD
1 stop29h 04mMultiple Airlines
Tue 9/720:50ORD - LGW
1 stop28h 10mMultiple Airlines
Deal found 15/5£385
Fri 31/520:30LHR - ORD
1 stop27h 25mScandinavian Airlines
Sun 2/619:45ORD - LHR
1 stop19h 55mScandinavian Airlines
Deal found 15/5£385
Sat 1/606:40LHR - ORD
1 stop17h 15mScandinavian Airlines
Sun 16/619:45ORD - LHR
1 stop15h 55mScandinavian Airlines
Deal found 15/5£385
Cheap flights to Peoria, Illinois
Wed 5/606:30LHR - PIA
2 stops20h 42mLufthansa
Sun 16/615:50PIA - LHR
1 stop32h 05mLufthansa
Deal found 15/5£926
Tue 4/615:20LHR - PIA
1 stop11h 52mLufthansa
Wed 12/611:00PIA - LHR
1 stop12h 55mLufthansa
Deal found 15/5£932
Tue 4/608:40LHR - PIA
2 stops36h 34mUnited Airlines
Wed 12/611:00PIA - LHR
1 stop12h 55mUnited Airlines
Deal found 15/5£934
Wed 5/611:05LHR - PIA
1 stop12h 49mFinnair
Thu 13/607:14PIA - LHR
1 stop18h 26mFinnair
Deal found 15/5£952
Wed 5/606:50LHR - PIA
2 stops14h 24mUnited Airlines
Sun 16/611:00PIA - LHR
2 stops15h 35mUnited Airlines
Deal found 15/5£969
Thu 6/615:20LHR - PIA
1 stop11h 52mLufthansa
Sat 15/611:00PIA - LHR
1 stop12h 55mLufthansa
Deal found 15/5£992
Thu 6/606:50LHR - PIA
2 stops20h 22mUnited Airlines
Sat 15/607:00PIA - LHR
1 stop22h 45mUnited Airlines
Deal found 15/5£994
Wed 5/607:50LCY - PIA
2 stops19h 22mLufthansa
Sun 16/615:50PIA - LCY
2 stops18h 35mLufthansa
Deal found 15/5£1,030
Tue 4/619:10LCY - PIA
2 stops26h 04mLufthansa
Wed 12/611:00PIA - LCY
2 stops23h 25mLufthansa
Deal found 15/5£1,031
Cheap flights to Moline, Illinois
Thu 13/608:40LHR - MLI
2 stops18h 37mUnited Airlines
Mon 17/611:01MLI - LHR
1 stop12h 54mUnited Airlines
Deal found 15/5£949
Thu 13/608:40LHR - MLI
2 stops18h 37mUnited Airlines
Mon 17/615:47MLI - LHR
2 stops13h 23mUnited Airlines
Deal found 15/5£953
Thu 13/608:30LHR - MLI
1 stop14h 27mUnited Airlines
Mon 17/606:45MLI - LHR
1 stop17h 10mUnited Airlines
Deal found 15/5£958
Fri 14/613:05LHR - MLI
1 stop14h 12mUnited Airlines
Fri 21/617:45MLI - LHR
1 stop30h 10mUnited Airlines
Deal found 15/5£982
Fri 14/606:50LHR - MLI
2 stops16h 07mUnited Airlines
Fri 21/615:47MLI - LHR
1 stop13h 58mUnited Airlines
Deal found 15/5£1,019
Thu 13/607:50LCY - MLI
2 stops19h 27mLufthansa
Mon 17/617:45MLI - LCY
2 stops42h 50mLufthansa
Deal found 15/5£1,019
Fri 14/606:50LHR - MLI
2 stops16h 07mUnited Airlines
Fri 21/611:01MLI - LHR
2 stops13h 44mUnited Airlines
Deal found 15/5£1,050

Illinois 2024 flight deals

Explore flight deals for Illinois in 2024, offering the best prices and options to suit your preferences. In the last 7 days, Cheapflights users made a total of 849,850 searches and data were last updated on 16 May 2024.
These are some of the best deals we've found on flights to Illinois in 2024 at this time. Check back regularly for other flight deals.
Tue 15/1018:45LHR - ORD
1 stop27h 25mTAP AIR PORTUGAL
Mon 21/1018:00ORD - LHR
1 stop17h 45mTAP AIR PORTUGAL
Deal found 15/5£368
Tue 11/610:00LGW - MDW
1 stop27h 31mMultiple Airlines
Tue 9/719:37MDW - LGW
1 stop29h 23mMultiple Airlines
Deal found 15/5£370
Wed 5/610:00LGW - ORD
1 stop29h 04mMultiple Airlines
Tue 9/720:50ORD - LGW
1 stop28h 10mMultiple Airlines
Deal found 15/5£373
Fri 31/520:30LHR - ORD
1 stop27h 25mScandinavian Airlines
Mon 3/619:45ORD - LHR
1 stop14h 15mScandinavian Airlines
Deal found 15/5£378
Thu 12/918:45LHR - ORD
1 stop27h 15mTAP AIR PORTUGAL
Sun 15/918:00ORD - LHR
1 stop18h 50mTAP AIR PORTUGAL
Deal found 15/5£378
Thu 6/610:00LGW - MDW
1 stop17h 56mMultiple Airlines
Tue 9/719:37MDW - LGW
1 stop29h 23mMultiple Airlines
Deal found 15/5£379
Tue 10/919:50LHR - ORD
1 stop26h 20mTAP AIR PORTUGAL
Mon 16/918:00ORD - LHR
1 stop12h 45mTAP AIR PORTUGAL
Deal found 15/5£379
Fri 31/515:35LHR - ORD
2 stops32h 20mScandinavian Airlines
Mon 3/619:45ORD - LHR
1 stop14h 15mScandinavian Airlines
Deal found 15/5£381
Wed 5/609:55LHR - ORD
1 stop14h 00mScandinavian Airlines
Mon 10/619:45ORD - LHR
1 stop14h 15mScandinavian Airlines
Deal found 15/5£383

Flights to Illinois departing soon

Discover available last-minute flight options to Illinois, providing immediate availability and potentially lower prices. In the last 7 days, Cheapflights users made a total of 849,850 searches and data was last updated on 16 May 2024.
Have a look at some of the best last-minute flights available departing to Illinois. Make sure to double check the price, time, and destination to confirm all are correct.
Wed 22/510:00LGW - ORD
1 stop28h 55mMultiple Airlines
Thu 19/917:19ORD - LGW
1 stop14h 11mMultiple Airlines
Deal found 15/5£395

One-way flights to Illinois

Explore one-way flight options to Illinois for greater flexibility in your travel plans. Find up-to-date pricing and availability for one-way flights. In the last 7 days, Cheapflights users made a total of 849,850 searches and data was last updated on 16 May 2024.
Take a look at some of the one-way flights departing to Illinois in the near future. Users can also find round-trip Illinois flights by using the search form above.
Tue 4/610:00LGW - MDW
1 stop27h 31mMultiple Airlines
Deal found 15/5£173

Direct flights to Illinois

Tue 17/913:05LHR - ORD
Nonstop9h 10mLufthansa
Thu 26/921:30ORD - LHR
Nonstop8h 15mLufthansa
Deal found 15/5£473
Mon 16/913:10LHR - ORD
Nonstop8h 40mBritish Airways
Mon 23/916:45ORD - LHR
Nonstop7h 50mBritish Airways
Deal found 15/5£483
Tue 10/915:35LHR - ORD
Nonstop8h 40mBritish Airways
Tue 17/921:25ORD - LHR
Nonstop7h 50mBritish Airways
Deal found 15/5£485
Mon 28/1015:45LHR - ORD
Nonstop9h 00mFinnair
Mon 4/1117:00ORD - LHR
Nonstop7h 40mFinnair
Deal found 15/5£491
Tue 17/913:10LHR - ORD
Nonstop8h 40mBritish Airways
Thu 30/117:00ORD - LHR
Nonstop7h 40mBritish Airways
Deal found 15/5£495
Mon 16/908:30LHR - ORD
Nonstop8h 55mLufthansa
Tue 28/115:55ORD - LHR
Nonstop8h 00mLufthansa
Deal found 15/5£498
Tue 17/908:30LHR - ORD
Nonstop8h 55mLufthansa
Fri 31/117:50ORD - LHR
Nonstop8h 05mLufthansa
Deal found 15/5£502
Tue 2/708:10LHR - ORD
Nonstop8h 35mMultiple Airlines
Thu 18/722:45ORD - LHR
Nonstop7h 30mMultiple Airlines
Deal found 14/5£503
Wed 18/908:10LHR - ORD
Nonstop8h 35mBritish Airways
Thu 30/117:00ORD - LHR
Nonstop7h 40mBritish Airways
Deal found 15/5£504

Find flights to Illinois within your budget

Locate flights to Illinois that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 849,850 searches and data was last updated on 16 May 2024.

Fly from

Any airport

Budget

£368 - £483

Route

Depart

Return

Price

London HeathrowChicago O'Hare Intl

LHR - ORD

LHRORD

London Heathrow

Tue 15/10

1 stop27h 25m

Chicago O'Hare Intl

Mon 21/10

1 stop17h 45m

£368

London GatwickChicago Midway

LGW - MDW

LGWMDW

London Gatwick

Tue 11/6

1 stop27h 31m

Chicago Midway

Tue 9/7

1 stop29h 23m

£370

London HeathrowChicago O'Hare Intl

LHR - ORD

LHRORD

London Heathrow

Fri 31/5

1 stop27h 25m

Chicago O'Hare Intl

Mon 3/6

1 stop14h 15m

£378

London HeathrowChicago O'Hare Intl

LHR - ORD

LHRORD

London Heathrow

Fri 13/9

1 stop14h 10m

Chicago O'Hare Intl

Fri 27/9

1 stop16h 05m

£391

London HeathrowChicago O'Hare Intl

LHR - ORD

LHRORD

London Heathrow

Tue 17/9

Nonstop9h 10m

Chicago O'Hare Intl

Thu 26/9

1 stop15h 14m

£431

London HeathrowChicago O'Hare Intl

LHR - ORD

LHRORD

London Heathrow

Mon 16/9

Nonstop8h 40m

Chicago O'Hare Intl

Mon 23/9

1 stop19h 25m

£471

London HeathrowChicago O'Hare Intl

LHR - ORD

LHRORD

London Heathrow

Thu 19/9

1 stop26h 10m

Chicago O'Hare Intl

Thu 26/9

Nonstop7h 50m

£479

London GatwickChicago O'Hare Intl

LGW - ORD

LGWORD

London Gatwick

Tue 2/7

1 stop13h 13m

Chicago O'Hare Intl

Thu 11/7

1 stop15h 18m

£481

London HeathrowChicago O'Hare Intl

LHR - ORD

LHRORD

London Heathrow

Mon 16/9

Nonstop8h 40m

Chicago O'Hare Intl

Mon 23/9

Nonstop7h 50m

£483

Flights are sorted by cheapest first

Deals found on 15/5

Average price of flights to Illinois by month

Plan your trip to Illinois by taking into account the cheapest months to travel. The average price of a one-way flight to Illinois is currently £173 while a return flight costs £428. Price data was last updated on 12 May 2024.

Currently, January is the cheapest month in which you can book a flight to Illinois (average of £601). Flying to Illinois in July will prove the most costly (average of £775). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

January

£476

February

£491

March

£481

April

£492

May

£518

June

£596

July

£613

August

£565

September

£529

October

£512

November

£492

December

£497

Temperature and rainfall in Illinois by month

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

CHI

Temperature

-5 - 23 °C

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

When is the best time to book a flight to Illinois?

Use this chart to determine the optimal time to book a return flight to Illinois. Price data was last updated on 10 May 2024.
The best time to book flights to Illinois is 84 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Search Deals

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated 16 May 2024.
To help decide which airline to fly to Illinois, see what other customers have to say about TAP AIR PORTUGAL, Scandinavian Airlines and Icelandair. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very Good
10,673 reviews

Boarding

8.2

Comfort

7.9

Food

7.4

Crew

8.6

Overall

8.0

Entertainment

8.0

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.

8.0
Very Good
10,673 reviews
8.0
Very Good
10,673 reviews

Boarding

8.2

Comfort

7.9

Food

7.4

Crew

8.6

Overall

8.0

Entertainment

8.0

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.

7.9
Good
1,568 reviews
8.0
Very Good
10,673 reviews

Boarding

8.2

Comfort

7.9

Food

7.4

Crew

8.6

Overall

8.0

Entertainment

8.0

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.

7.8
Good
1,996 reviews
8.0
Very Good
10,673 reviews

Boarding

8.2

Comfort

7.9

Food

7.4

Crew

8.6

Overall

8.0

Entertainment

8.0

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.

7.8
Good
1,376 reviews
8.0
Very Good
10,673 reviews

Boarding

8.2

Comfort

7.9

Food

7.4

Crew

8.6

Overall

8.0

Entertainment

8.0

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.

7.7
Good
735 reviews
8.0
Very Good
10,673 reviews

Boarding

8.2

Comfort

7.9

Food

7.4

Crew

8.6

Overall

8.0

Entertainment

8.0

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.

Sitting along the banks of the Mississippi River and Lake Michigan, Illinois’s accessible location has for centuries made it an important hub. Historically emigrants from Mexico, Ireland and Poland would make the long journey over in search of work and a new home. Abraham Lincoln was among those who called Illinois home and the state honoured him by naming the small city of Lincoln after him – beforehe became president.

Most travellers booking flights to Illinois would probably pick Chicago as their city of choice for its renowned restaurant scene and shopping but there’s so much more to see in including 6,900 kilometres of shoreline and more than 50 state parks, making it one of the most scenic states in the US.

Illinois climate

Illinois’s winters are very cold and long with snow and icy winds from late November through to April. Summers, especially July and August, the weather tends to be hot and humid. The best times to visit is when the weather is perfect, in spring and autumn; tornado season can occur anytime between the months of March and May. Chicago’s summers are humid with highs of 30 degrees (Celsius) or more and its winters are bitterly cold.

Getting around Illinois

Public transportation is reliable and taxis are easy to find. Driving is not recommended because of heavy traffic and parking is almost impossible to find. The El, a system operated by The Chicago Transit Authority consists of elevated trains running 24 hours a day. During the summer rush hour a River Bus is available.

What is good to know if travelling to Illinois?

  • Chicago has a wealth of things to see and do. The best view of the city can be found at 1,450 feet from the top of North America’s tallest building – the Sears Tower. Head to the 103rd floor to the Skydeck where you can see the entire city laid out.  The Hancock Building is also well worth a visit and offers stunning city views from its observation deck or cocktail bar.
  • Don’t miss a trip to the Anderson Japanese Gardens in Rockford. Set on twelve acres the gardens are adorned with Japanese maples, magnolias, and rhododendrons and have several ponds and waterfalls with Japanese bronze structures surrounding them. There’s also an authentic tea house and contemporary “Garden of Reflection”.  
  • Visit the preserved Frank Lloyd Wright Museum on Chicago Avenue in Oak Park where the famed architect spent 20 years of his career and designed 130 of his masterpieces.  Wright lived here until 1909.
  • One of the most visited attractions in Chicago is the Art Institute of Chicago. Art lovers – well any visitor – shouldn’t miss a trip to the museum, it’s remarkable. The gargantuan building houses more than 250,000 works of art from all over the world including ancient Egyptian, Japanese, Korean, Greek and Roman relics. One of its highlights is the anthology of Impressionist art which has an impressive collection by Monet, Pablo Picasso and Henri Matisse to name a few.
  • Anyone interested in the lives of the Amish people should head to central Illinois where a welcoming group of Amish villages are set up. Take a tour of the community in the Illinois Amish Interpretative Centre in Arcola, visit a working farm and watch how supper is prepared and enjoyed in a family home.
  • When is the best time to fly to Illinois?

    Peak Season: Winter is peak season in Illinois for skiing and snowmobiling. In summer many different festivals take place in Chicago’s parks and neighbourhoods almost every weekend, making it difficult to find a cheap Illinois flight. Off Season: The best month to book a cheap Illinois flight is September, which is also the mildest month. Autumn is visually the prettiest time to visit when the temperature is still mild and the foliage is changing. The quietest months in Chicago are from January to March but they can also be the coldest and windiest.

  • Can I find cheaper flights to Illinois if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Illinois on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Illinois?

    Based on reviews from Cheapflights users, Scandinavian Airlines is rated the highest out of the airlines that fly to Illinois.

  • What is the cheapest airport to fly to in Illinois?

    Chicago O'Hare Intl Airport is currently the cheapest airport to fly to in Illinois. One-way flights to Chicago O'Hare Intl Airport typically cost £38, while return flights cost around £40.

  • How much is a return flight to Illinois?

    A return flight to Illinois will typically cost around £265, however they can be found for as little as £50.

  • Where does the fastest flight to Illinois depart from?

    For those looking to save time traveling to Illinois, Edinburgh offers the quickest one-way flight (8 hours 25 minutes).

  • Does Chicago O'Hare Intl Airport have car hire?

    Yes. Those touching down at Chicago O'Hare Intl Airport can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Chicago O'Hare Intl Airport?

    Yes. Chicago O'Hare Intl Airport has hotels nearby for those requiring accommodations. Hilton Chicago O'Hare Airport is the closest property to Chicago O'Hare Intl Airport (0.0 mi away from Chicago O'Hare Intl Airport).

See more FAQs

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