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£404+ Cheap flights to Chicago

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 19/9. Fares are subject to change and may not be available on all flights or dates of travel.
— CHI
20 Jul — 27 Jul1
1 adult

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 15 July 2025.

Return from

£412

One-way from

£404

Popular in

July

Cheapest in

February

Average price

£654

Good round-trip deal

£545 or less

Good one-way deal

£605 or less
Lufthansa
  • Lufthansa
  • 10/9-18/9
  • 1 total stop
  • 20h 45m total
  • London to Chicago
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Aer Lingus
  • Aer Lingus
  • 22/8
  • 1 total stop
  • 11h 35m total
  • London to Chicago
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Highest demand for flights based on searches. 14% potential increase in price (£65 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 July 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 15 July 2025.

Wed 10/908:30LHR - ORD
1 stop12h 25mLufthansa
Thu 18/918:00ORD - LHR
Nonstop8h 20mLufthansa
Deal found 14/7£412
Tue 26/819:55LGW - ORD
2 stops27h 55mMultiple Airlines
Tue 9/918:44ORD - LGW
2 stops29h 36mMultiple Airlines
Deal found 15/7£412
Thu 28/819:50LHR - ORD
1 stop26h 20mTAP AIR PORTUGAL
Thu 4/918:00ORD - LHR
1 stop22h 05mTAP AIR PORTUGAL
Deal found 14/7£412
Tue 2/915:40LGW - ORD
1 stop11h 35mIcelandair
Thu 9/1019:25ORD - LGW
1 stop13h 15mIcelandair
Deal found 13/7£413
Thu 28/812:35LTN - ORD
2 stops33h 35mMultiple Airlines
Thu 4/919:15ORD - LTN
2 stops19h 25mMultiple Airlines
Deal found 14/7£413
Thu 16/1011:55LHR - ORD
1 stop14h 55mJetBlue
Mon 20/1013:36ORD - LHR
1 stop13h 54mJetBlue
Deal found 13/7£414
Mon 25/821:25LHR - ORD
1 stop26h 50mIcelandair
Sat 13/1218:30ORD - LHR
1 stop10h 20mIcelandair
Deal found 14/7£414
Tue 16/918:35LGW - ORD
1 stop27h 20mSWISS
Mon 13/1015:45ORD - LGW
1 stop20h 05mSWISS
Deal found 12/7£417
Fri 12/915:05LGW - ORD
1 stop27h 36mBritish Airways
Fri 10/1013:43ORD - LGW
1 stop12h 27mBritish Airways
Deal found 12/7£418
Sun 24/807:30LHR - ORD
1 stop18h 25mUnited Airlines
Tue 9/916:00ORD - LHR
Nonstop8h 20mUnited Airlines
Deal found 14/7£418
Wed 10/908:40LHR - ORD
1 stop13h 15mMultiple Airlines
Sun 21/918:00ORD - LHR
Nonstop8h 20mMultiple Airlines
Deal found 14/7£419
Sun 7/919:30LHR - ORD
1 stop23h 50mAustrian Airlines
Sat 20/912:50ORD - LHR
1 stop12h 05mAustrian Airlines
Deal found 13/7£421

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 15 July 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

Wed 10/9

08:30-14:55

1 stop12h 25m

Chicago O'Hare Intl

Thu 18/9

18:00-08:20

Nonstop8h 20m

£412

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 26/8

19:55-17:50

2 stops27h 55m

Chicago O'Hare Intl

Tue 9/9

18:44-06:20

2 stops29h 36m

£412

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 28/8

19:50-16:10

1 stop26h 20m

Chicago O'Hare Intl

Thu 4/9

18:00-22:05

1 stop22h 05m

£412

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 2/9

15:40-21:15

1 stop11h 35m

Chicago O'Hare Intl

Thu 9/10

19:25-14:40

1 stop13h 15m

£413

LondonChicago

LTN - ORD

LTNORD

London Luton

Thu 28/8

12:35-16:10

2 stops33h 35m

Chicago O'Hare Intl

Thu 4/9

19:15-20:40

2 stops19h 25m

£413

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 16/10

11:55-20:50

1 stop14h 55m

Chicago O'Hare Intl

Mon 20/10

13:36-09:30

1 stop13h 54m

£414

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 25/8

21:25-18:15

1 stop26h 50m

Chicago O'Hare Intl

Sat 13/12

18:30-10:50

1 stop10h 20m

£414

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 16/9

18:35-15:55

1 stop27h 20m

Chicago O'Hare Intl

Sun 12/10

19:05-17:50

1 stop16h 45m

£417

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Fri 12/9

15:05-12:41

1 stop27h 36m

Chicago O'Hare Intl

Fri 10/10

13:43-08:10

1 stop12h 27m

£418

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 24/8

07:30-19:55

1 stop18h 25m

Chicago O'Hare Intl

Tue 9/9

16:00-06:20

Nonstop8h 20m

£418

Flights are sorted by cheapest return flights first.

Deals found on 15/7

Showing 1-10 of 54 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 11 July 2025.

The best time to book flights to Chicago is 64 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 36 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 Sunday at midday, when prices are usually at their highest.

Weekly flight availability to Chicago

The most flights from London to Chicago are scheduled on a Monday (53 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (47 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 £396
Aer Lingus
Aer Lingus
From £439
Lufthansa
Lufthansa
From £534
Icelandair
Icelandair
From £417

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 15 July 2025.
Read through reviews of airlines serving the United States, such as Delta, KLM, andAir Transat. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,956 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very Good
7,956 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,372 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Air Transat
7.7
Good
415 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Austrian Airlines
7.6
Good
814 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Finnair
7.6
Good
1,316 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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 £36, while return flights cost around £32.

  • How much is a return flight to Chicago?

    A return flight to Chicago will typically cost around £288, however they can be found for as little as £44.

  • 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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