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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 26/3. Fares are subject to change and may not be available on all flights or dates of travel.
— CHI
4 Jan — 11 Jan1
1 adult
1 adult, Economy, 0 bags

Flights to Chicago in 2025

Enter your travel dates to find the best prices.

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 5 December 2025.

Tue 23/1220:35LHR - ORD
1 stop26h 45mIcelandair
Thu 15/118:30ORD - LHR
1 stop19h 00mIcelandair
Deal found 3/12£469
Fri 5/1212:20LHR - ORD
1 stop15h 32mJetBlue
Mon 12/106:45ORD - LHR
1 stop18h 10mJetBlue
Deal found 3/12£475
Fri 12/1206:40LHR - ORD
2 stops21h 07mScandinavian Airlines
Thu 15/119:20ORD - LHR
1 stop14h 40mScandinavian Airlines
Deal found 3/12£480
Fri 12/1212:15LHR - ORD
1 stop11h 05mIcelandair
Thu 15/118:30ORD - LHR
1 stop19h 00mIcelandair
Deal found 3/12£484
Mon 15/1220:35LHR - ORD
1 stop26h 45mIcelandair
Fri 16/118:30ORD - LHR
1 stop19h 00mIcelandair
Deal found 3/12£487
Mon 8/1220:35LHR - ORD
1 stop26h 45mIcelandair
Sun 14/1218:30ORD - LHR
1 stop10h 20mIcelandair
Deal found 4/12£489
Sun 14/1210:20LHR - ORD
1 stop12h 25mScandinavian Airlines
Thu 5/219:20ORD - LHR
1 stop14h 40mScandinavian Airlines
Deal found 3/12£489
Fri 12/1219:50LHR - ORD
2 stops50h 55mScandinavian Airlines
Fri 16/119:20ORD - LHR
1 stop32h 00mScandinavian Airlines
Deal found 4/12£493
Tue 23/1219:50LHR - ORD
2 stops26h 55mScandinavian Airlines
Thu 15/119:20ORD - LHR
2 stops17h 30mScandinavian Airlines
Deal found 3/12£498
Mon 15/1221:25LGW - ORD
2 stops47h 35mTAP AIR PORTUGAL
Fri 16/120:15ORD - LGW
1 stop13h 30mTAP AIR PORTUGAL
Deal found 3/12£504
Fri 5/1216:00LGW - ORD
2 stops52h 45mMultiple Airlines
Mon 12/108:35ORD - LGW
1 stop15h 25mMultiple Airlines
Deal found 3/12£504
Mon 29/1211:55LGW - ORD
1 stop11h 25mIcelandair
Wed 25/319:30ORD - LGW
1 stop10h 25mIcelandair
Deal found 3/12£507

Find flight deals to Chicago

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 5 December 2025.

Return from

£468

One-way from

£404

Popular in

July

Cheapest in

February

Average price

£599

Good round-trip deal

£546 or less

Good one-way deal

£469 or less
United Airlines
  • United Airlines
  • 17/1-24/1
  • 2 total stops
  • 28h 15m total
  • London to Chicago
Search Deals
British Airways
  • British Airways
  • 23/3
  • Nonstop
  • 8h 50m total
  • London to Chicago
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£78 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for return flights in December 2025
Search Deals
Price to beat on a round-trip flight from London to Chicago.
Search Deals
Price to beat on a one-way flight from London to Chicago.
Search Deals

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 5 December 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

Sat 17/1

06:30-15:20

1 stop14h 50m

Chicago O'Hare Intl

Sat 24/1

17:50-07:55

Nonstop8h 05m

£468

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Thu 22/1

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Mon 26/1

18:30-10:55

1 stop10h 25m

£470

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 19/3

07:05-17:45

2 stops15h 40m

Chicago O'Hare Intl

Tue 24/3

10:40-09:20

2 stops17h 40m

£470

LondonChicago

STN - ORD

STNORD

London Stansted

Mon 12/1

13:55-15:10

2 stops31h 15m

Chicago O'Hare Intl

Sun 18/1

10:29-13:30

3 stops21h 01m

£471

LondonChicago

STN - ORD

STNORD

London Stansted

Thu 19/3

06:30-18:20

2 stops16h 50m

Chicago O'Hare Intl

Tue 24/3

19:30-18:20

2 stops17h 50m

£483

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 24/5

06:30-12:55

1 stop12h 25m

Chicago O'Hare Intl

Fri 5/6

08:40-10:00

1 stop19h 20m

£483

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Thu 30/4

13:00-18:15

1 stop11h 15m

Chicago O'Hare Intl

Thu 14/5

19:25-14:40

1 stop13h 15m

£487

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 29/4

15:40-18:15

1 stop32h 35m

Chicago O'Hare Intl

Wed 13/5

22:40-14:40

1 stop10h 00m

£488

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 29/4

15:40-18:15

1 stop32h 35m

Chicago O'Hare Intl

Mon 11/5

19:25-11:45

1 stop10h 20m

£488

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 4/3

06:00-14:00

1 stop14h 00m

Chicago O'Hare Intl

Tue 10/3

22:05-11:15

Nonstop8h 10m

£489

Flights are sorted by cheapest return flights first.

Deals found on 4/12

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 28 November 2025.

The best time to book flights to Chicago is 46 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 13 hours 17 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 Thursday (42 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (30 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 £357
Aer Lingus
Aer Lingus
From £343
Icelandair
Icelandair
From £288
Lufthansa
Lufthansa
From £389

What are the cheapest airlines that fly to Chicago?

The cheapest airlines flying from London to Chicago are Icelandair, Virgin Atlantic and Scandinavian Airlines.

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 5 December 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
1,334 reviews
Check prices

Food

6.7

Overall

7.6

Crew

8.1

Entertainment

6.9

Boarding

7.6

Comfort

7.4

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
1,334 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Food

6.7

Overall

7.6

Crew

8.1

Entertainment

6.9

Boarding

7.6

Comfort

7.4

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
1,384 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Food

6.7

Overall

7.6

Crew

8.1

Entertainment

6.9

Boarding

7.6

Comfort

7.4

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
584 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Food

6.7

Overall

7.6

Crew

8.1

Entertainment

6.9

Boarding

7.6

Comfort

7.4

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
7,612 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Food

6.7

Overall

7.6

Crew

8.1

Entertainment

6.9

Boarding

7.6

Comfort

7.4

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
7,562 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Food

6.7

Overall

7.6

Crew

8.1

Entertainment

6.9

Boarding

7.6

Comfort

7.4

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 £26, while return flights cost around £48.

  • How much is a return flight to Chicago?

    A return flight to Chicago will typically cost around £344, however they can be found for as little as £48.

  • 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 35 minutes).

  • 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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