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$342+ Cheap flights from the United Kingdom to Chicago (CHI)

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 11/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CHI
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from United Kingdom to Chicago

Keep the following information in mind while searching for United Kingdom to Chicago flight deals. Data was last updated September 15, 2025.

Round-trip from

$536
(Mytrip)

One-way from

$342
(Mytrip)

Popular in

July

Cheapest in

February

Average price

$593

Good round-trip deal

$750 or less

Good one-way deal

$630 or less
From United Kingdom to Chicago (CHI)
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One-way flight from United Kingdom to Chicago (CHI)
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Highest demand for flights based on searches. 14% potential increase in price ($113 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from United Kingdom to Chicago (CHI).
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Price to beat on a one-way flight from United Kingdom to Chicago (CHI).
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Find flight deals from United Kingdom to Chicago

Cheapest flights from United Kingdom to Chicago
Explore the most affordable flight options available from United Kingdom to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Mytrip deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/298:50 amLGW - ORD
2 stops17h 15mMultiple Airlines
Wed 11/57:20 pmORD - LGW
2 stops19h 45mMultiple Airlines
Deal found 9/14$536
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/37:40 amLHR - ORD
1 stop14h 05mAmerican Airlines
Mon 10/61:43 pmORD - LHR
1 stop10h 47mAmerican Airlines
Deal found 9/14$536
This Norse deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Norse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/62:00 pmLGW - ORD
1 stop33h 53mMultiple Airlines
Sun 10/196:00 amORD - LGW
1 stop22h 10mMultiple Airlines
Deal found 9/12$537
This Kiwi.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/196:00 amLHR - ORD
1 stop15h 55mMultiple Airlines
Sun 9/216:00 pmORD - LHR
Nonstop8h 20mMultiple Airlines
Deal found 9/12$537
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/31:05 pmLGW - ORD
2 stops34h 34mMultiple Airlines
Tue 10/711:13 amORD - LGW
1 stop13h 07mMultiple Airlines
Deal found 9/14$538
This Scandinavian Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/87:50 pmLHR - ORD
2 stops50h 55mScandinavian Airlines
Sat 1/107:20 pmORD - LHR
1 stop14h 40mScandinavian Airlines
Deal found 9/14$538
This Norse deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Norse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/272:00 pmLGW - ORD
1 stop34h 50mMultiple Airlines
Sat 10/116:58 pmORD - LGW
1 stop33h 12mMultiple Airlines
Deal found 9/12$539
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/97:45 amLHR - ORD
2 stops14h 50mUnited Airlines
Wed 10/154:50 pmORD - LHR
1 stop12h 35mUnited Airlines
Deal found 9/15$539
This SmartFares deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3011:55 amLGW - ORD
1 stop11h 25mIcelandair
Sun 11/26:30 pmORD - LGW
1 stop10h 25mIcelandair
Deal found 9/13$540
This Netflights deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/612:35 pmLHR - ORD
Nonstop8h 50mBritish Airways
Wed 11/129:45 pmORD - LHR
Nonstop7h 50mBritish Airways
Deal found 9/13$540
This Icelandair deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1412:15 pmLHR - ORD
1 stop11h 05mIcelandair
Thu 1/156:30 pmORD - LHR
1 stop19h 00mIcelandair
Deal found 9/15$541
This Netflights deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/72:10 pmLHR - ORD
Nonstop8h 50mBritish Airways
Fri 11/289:45 pmORD - LHR
Nonstop7h 50mBritish Airways
Deal found 9/15$542

Cheapflights Fare Finder

 
Customize your flight search to find flights from United Kingdom to Chicago 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 2,558,603 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from the United Kingdom to Chicago that are best for you.

Fly from

United Kingdom

Fly to

Chicago

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 10/4

9:30 am-11:15 pm

2 stops19h 45m

Chicago O'Hare Intl

Tue 10/7

11:45 am-5:55 am

1 stop12h 10m

$538

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 10/1

7:45 am-4:35 pm

2 stops14h 50m

Chicago O'Hare Intl

Tue 10/21

1:17 pm-7:15 am

1 stop11h 58m

$539

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 10/1

7:45 am-4:35 pm

2 stops14h 50m

Chicago O'Hare Intl

Sun 10/12

2:08 pm-9:35 am

1 stop13h 27m

$539

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 12/15

12:15 pm-5:20 pm

1 stop11h 05m

Chicago O'Hare Intl

Thu 1/15

6:30 pm-7:30 pm

1 stop19h 00m

$541

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 12/15

12:15 pm-5:20 pm

1 stop11h 05m

Chicago O'Hare Intl

Wed 1/14

6:30 pm-10:50 am

1 stop10h 20m

$541

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 12/13

8:35 pm-5:20 pm

1 stop26h 45m

Chicago O'Hare Intl

Thu 1/8

6:30 pm-7:30 pm

1 stop19h 00m

$543

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Thu 10/9

2:00 pm-6:46 pm

1 stop34h 46m

Chicago O'Hare Intl

Thu 10/23

6:58 pm-10:00 am

1 stop33h 02m

$544

LondonChicago

STN - ORD

STNORD

London Stansted

Mon 10/13

6:25 am-7:00 pm

1 stop18h 35m

Chicago O'Hare Intl

Mon 10/20

3:45 pm-10:15 am

1 stop12h 30m

$550

LondonChicago

STN - ORD

STNORD

London Stansted

Thu 10/30

6:30 am-9:05 pm

2 stops19h 35m

Chicago O'Hare Intl

Sun 11/2

9:50 pm-11:00 pm

2 stops19h 10m

$550

LondonChicago

STN - ORD

STNORD

London Stansted

Sat 11/1

8:30 am-6:20 pm

2 stops14h 50m

Chicago O'Hare Intl

Sun 11/2

6:30 pm-11:00 pm

2 stops22h 30m

$551

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

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

Have a flexible travel schedule? Discover the best time to fly to Chicago from United Kingdom with our price prediction graph.
Estimated round-trip 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 from the United Kingdom to Chicago

What is the cheapest month to book a flight from United Kingdom to Chicago?

Currently, August is the cheapest month in which you can book a flight from United Kingdom to Chicago (average of $245). Flying from United Kingdom to Chicago in March is currently the most expensive (average of $321). 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.

What is the cheapest time of day to fly from GB to CHI?

Find hourly flight availability from United Kingdom to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from United Kingdom to Chicago as you normally would.

Weekly flight availability from United Kingdom to Chicago

Explore weekly flight availability from United Kingdom to Chicago. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 15, 2025.

The most flights from GB0 to CHI 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).

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 September 15, 2025.
See what other customers who have flown with United Airlines, American Airlines, and Aer Lingus from the United Kingdom to Chicago have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,931 reviews

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,931 reviews
United Airlines
7.4
Good
8,931 reviews

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,931 reviews

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
Aer Lingus
7.2
Good
1,270 reviews
United Airlines
7.4
Good
8,931 reviews

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
Icelandair
7.0
Good
546 reviews
United Airlines
7.4
Good
8,931 reviews

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
British Airways
6.7
Okay
7,361 reviews
United Airlines
7.4
Good
8,931 reviews

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to Chicago. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from United Kingdom to Chicago?

    United Airlines, Icelandair, and SWISS can get you from United Kingdom to Chicago in just under 11h 05m. Your travel time can differ by up to 8h 40m. United Kingdom and Chicago are separated by a distance of 3939 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from United Kingdom to Chicago one-way?

    The cheapest airlines for a one-way flight from United Kingdom to Chicago are Delta ($544), Virgin Atlantic ($550), and Austrian Airlines ($553).

  • What are the most popular routes from United Kingdom to Chicago?

    The most popular flight routes from United Kingdom to Chicago are London Heathrow - Chicago O'Hare Intl, London Heathrow - Chicago Midway and London Gatwick - Chicago O'Hare Intl.

  • What are the most reliable airlines from United Kingdom to Chicago?

    Consider Air Canada (75%), Austrian Airlines (75%) or United Airlines (75%) when booking your flight. These represent the most reliable airlines when flying from United Kingdom to Chicago.

  • What are the cheapest flights from United Kingdom to Chicago?

    Looking for the cheapest flight from United Kingdom to Chicago? While on average our users pay $1,476, our data indicates the cheapest price to be $593. The most popular route (London Heathrow - Chicago O'Hare Intl), is priced around $448.

  • Can I find deals for flights from United Kingdom to Chicago that include hotel bookings?

    Yes. In addition to deals on United Kingdom to Chicago flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to Chicago?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Chicago.

  • Can I find deals for business class flights from United Kingdom to Chicago?

    Yes. Cheapflights offers flight deals from United Kingdom to Chicago by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from United Kingdom to Chicago?

    Currently, August is the cheapest month in which you can book a flight from United Kingdom to Chicago (average of $245). Flying from United Kingdom to Chicago in March is currently the most expensive (average of $321). 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

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Merrillville
Lansing
Hammond
Benton Harbor
Porter
Chesterton

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Alternative routes for United Kingdom to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
Frankfurt to O'Hare Intl flights
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Frederic Chopin to Midway flights
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Frankfurt-Hahn to O'Hare Intl flights
Istanbul to O'Hare Intl flights
Barcelona-El Prat to Midway flights
Leonardo da Vinci/Fiumicino to O'Hare Intl flights
Bergamo to O'Hare Intl flights
Linate to O'Hare Intl flights
Stansted to O'Hare Intl flights
Luton to O'Hare Intl flights
Belgrade to O'Hare Intl flights
Vilnius to O'Hare Intl flights
Copenhagen to O'Hare Intl flights
Berlin to O'Hare Intl flights
Lisbon to O'Hare Intl flights
Bruxelles-National to Midway flights
Munich to Midway flights
Madrid to Midway flights
Sofia to O'Hare Intl flights
Frankfurt to St. Louis flights
Leonardo da Vinci/Fiumicino to Midway flights

Top 10 airlines flying from United Kingdom to Chicago

Discover the top 10 airlines that operate flights from United Kingdom to Chicago. 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 2,558,603 searches. Data last updated September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$390Average$609FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$453Average$793FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$462Average$535FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$485Average$831FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$531Average$809FlexibilityNo cancel feeOn-time70%
TAP AIR PORTUGALCheapest$558Average$789FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$579Average$808FlexibilityNo cancel feeOn-time71%
Austrian AirlinesCheapest$584Average$967FlexibilityNo cancel feeOn-time78%
IberiaCheapest$599Average$793FlexibilityNo cancel feeOn-time77%
FinnairCheapest$607Average$809FlexibilityNo cancel feeOn-time76%

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