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£394+ Cheap flights to Chicago

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
— CHI
16 Oct — 23 Oct1
1 adult
1 adult, Economy

Flights to Chicago in 2025

Find the latest flights to Chicago in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 16 September 2025.

Return from

£394

One-way from

£398

Popular in

July

Cheapest in

February

Average price

£436

Good round-trip deal

£494 or less

Good one-way deal

£491 or less
9/10-15/10
  • 9/10-15/10
  • 2 total stops
  • 56h 36m total
  • London to Chicago
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25/9
  • 25/9
  • 3 total stops
  • 56h 33m total
  • London to Chicago
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Highest demand for flights based on searches. 14% potential increase in price (£61 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
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Average for return flights in September 2025
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Price to beat on a round-trip flight from London to Chicago.
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Price to beat on a one-way flight from London to Chicago.
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Find flight deals to Chicago

Cheapest flights to Chicago
Explore the most affordable flight options available to Chicago. Find the lowest fares based on data from user searches, with prices last updated on 16 September 2025.

Wed 1/1009:50LHR - ORD
1 stop11h 55mBritish Airways
Mon 6/1017:40ORD - LHR
Nonstop7h 40mBritish Airways
Deal found 15/9£394
Wed 15/1015:30LGW - ORD
2 stops27h 05mMultiple Airlines
Wed 22/1006:40ORD - LGW
1 stop17h 40mMultiple Airlines
Deal found 15/9£394
Fri 3/1007:40LHR - ORD
1 stop14h 05mAmerican Airlines
Fri 10/1013:43ORD - LHR
1 stop10h 37mAmerican Airlines
Deal found 14/9£394
Mon 22/914:00LGW - ORD
1 stop32h 12mMultiple Airlines
Sun 5/1006:00ORD - LGW
1 stop22h 10mMultiple Airlines
Deal found 15/9£395
Fri 19/906:50LHR - ORD
1 stop11h 15mMultiple Airlines
Mon 22/921:50ORD - LHR
Nonstop7h 55mMultiple Airlines
Deal found 12/9£395
Fri 3/1013:05LGW - ORD
2 stops34h 34mMultiple Airlines
Tue 7/1011:13ORD - LGW
1 stop13h 07mMultiple Airlines
Deal found 14/9£396
Mon 8/1219:50LHR - ORD
2 stops50h 55mScandinavian Airlines
Sat 10/119:20ORD - LHR
1 stop14h 40mScandinavian Airlines
Deal found 14/9£396
Sat 27/914:00LGW - ORD
1 stop34h 50mMultiple Airlines
Sat 11/1018:58ORD - LGW
1 stop33h 12mMultiple Airlines
Deal found 12/9£397
Thu 9/1007:45LHR - ORD
2 stops14h 50mUnited Airlines
Tue 14/1014:39ORD - LHR
1 stop10h 16mUnited Airlines
Deal found 15/9£397
Wed 1/1012:20LGW - ORD
2 stops16h 52mAmerican Airlines
Mon 6/1013:43ORD - LGW
1 stop12h 27mAmerican Airlines
Deal found 15/9£397
Thu 6/1112:35LHR - ORD
Nonstop8h 50mBritish Airways
Wed 12/1121:45ORD - LHR
Nonstop7h 50mBritish Airways
Deal found 13/9£397
Sun 14/1212:15LHR - ORD
1 stop11h 05mIcelandair
Thu 15/118:30ORD - LHR
1 stop19h 00mIcelandair
Deal found 15/9£398

Cheapflights Fare Finder

 
Locate flights to Chicago that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 16 September 2025.
Use the filters below to find and compare flights to Chicago that are best for you.

Fly from

London

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 9/12

07:05-16:45

2 stops39h 40m

Chicago O'Hare Intl

Fri 9/1

19:20-16:00

1 stop14h 40m

£396

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 1/10

07:45-16:35

2 stops14h 50m

Chicago O'Hare Intl

Sun 12/10

14:08-09:35

1 stop13h 27m

£397

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 15/12

12:15-17:20

1 stop11h 05m

Chicago O'Hare Intl

Thu 15/1

18:30-19:30

1 stop19h 00m

£398

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 9/12

12:15-17:20

1 stop11h 05m

Chicago O'Hare Intl

Wed 7/1

18:30-10:50

1 stop10h 20m

£398

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 13/12

20:35-17:20

1 stop26h 45m

Chicago O'Hare Intl

Thu 8/1

18:30-19:30

1 stop19h 00m

£400

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Thu 9/10

14:00-18:46

1 stop34h 46m

Chicago O'Hare Intl

Thu 23/10

18:58-10:00

1 stop33h 02m

£400

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 7/10

14:00-17:53

1 stop33h 53m

Chicago O'Hare Intl

Fri 5/12

06:05-10:00

1 stop21h 55m

£400

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 26/9

06:50-12:05

1 stop11h 15m

Chicago O'Hare Intl

Sun 28/9

21:25-11:45

Nonstop8h 20m

£403

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 30/10

07:05-18:45

2 stops16h 40m

Chicago O'Hare Intl

Sun 2/11

19:20-16:25

2 stops15h 05m

£404

LondonChicago

LTN - ORD

LTNORD

London Luton

Wed 15/10

10:00-19:00

1 stop15h 00m

Chicago O'Hare Intl

Wed 22/10

21:15-20:45

1 stop17h 30m

£407

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 60 results
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Best time to book a flight to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago 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.

Cheapflights Insights

Everything you need to know about your flight to Chicago

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

Use this chart to determine the optimal time to book a return flight from London to Chicago. Price data was last updated on 12 September 2025.

The best time to book flights to Chicago is 55 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.

How long is the flight to Chicago?

On average, a flight from London to Chicago takes 12 hours 19 minutes. Flights to Chicago from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

When is the cheapest time to fly to Chicago?

Use this chart to determine the cheapest time to fly return from London to Chicago. Price data was last updated on 16 December 2024.

Users looking for the lowest fares to Chicago should consider flying on Thursday afternoons, when prices are typically cheapest. Budget-minded travellers will want to avoid Saturday afternoons, when prices are usually at their highest.

Weekly flight availability to Chicago

The most flights from London to Chicago are scheduled on a Sunday (54 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (42 on average).

What are the most popular airlines that fly to Chicago?

The most popular airlines flying from London to Chicago are British Airways, Lufthansa and Finnair.

British Airways
British Airways
From £477
Aer Lingus
Aer Lingus
From £439
Lufthansa
Lufthansa
From £533
Icelandair
Icelandair
From £419

What are the cheapest airlines that fly to Chicago?

The cheapest airlines flying from London to Chicago are Icelandair, Scandinavian Airlines and TAP AIR PORTUGAL.

Rainfall in Chicago by month

Plan your trip to Chicago by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chicago ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago when rainfall is around 43.0 mm.

Temperature in Chicago by month

Plan your trip to Chicago by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chicago, 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).

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated 16 September 2025.
Read through reviews of airlines serving the United States, such as Finnair, Aer Lingus, andIcelandair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,323 reviews
Check prices

Food

6.7

Comfort

7.5

Overall

7.6

Crew

8.1

Entertainment

6.9

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Finnair
7.6
Good
1,323 reviews
Finnair
7.6
Good
1,323 reviews
Check prices

Food

6.7

Comfort

7.5

Overall

7.6

Crew

8.1

Entertainment

6.9

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Aer Lingus
7.2
Good
1,270 reviews
Finnair
7.6
Good
1,323 reviews
Check prices

Food

6.7

Comfort

7.5

Overall

7.6

Crew

8.1

Entertainment

6.9

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Icelandair
7.0
Good
544 reviews
Finnair
7.6
Good
1,323 reviews
Check prices

Food

6.7

Comfort

7.5

Overall

7.6

Crew

8.1

Entertainment

6.9

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Lufthansa
6.8
Okay
7,407 reviews
Finnair
7.6
Good
1,323 reviews
Check prices

Food

6.7

Comfort

7.5

Overall

7.6

Crew

8.1

Entertainment

6.9

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
British Airways
6.7
Okay
7,361 reviews
Finnair
7.6
Good
1,323 reviews
Check prices

Food

6.7

Comfort

7.5

Overall

7.6

Crew

8.1

Entertainment

6.9

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

FAQs about flying to Chicago

  • Can I find cheaper flights to Chicago 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 Chicago on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Chicago?

    Based on reviews from Cheapflights users, Icelandair is rated the highest out of the airlines that fly to Chicago.

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

    Chicago O'Hare Intl is currently the cheapest airport to fly to in Chicago. One-way flights to Chicago O'Hare Intl typically cost £34, while return flights cost around £81.

  • How much is a return flight to Chicago?

    A return flight to Chicago will typically cost around £561, however they can be found for as little as £110.

  • Where does the fastest flight to Chicago depart from?

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

  • Which airport is closest to National Museum of Mexican Art?

    f being close to National Museum of Mexican Art is important to you, you’ll want to land at Chicago O'Hare Intl Airport.

  • Does Chicago O'Hare Intl have car hire?

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

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

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

See more FAQs

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