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$307+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CHI
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
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 April 17, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$531
(Kiwi.com)

One-way from

$307
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$676

Good round-trip deal

$645 or less

Good one-way deal

$671 or less
Provider with most accurate pricing for London (LON)-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for London (LON)-Chicago (CHI) flights.
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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. 13% potential increase in price ($105 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 17, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/16. 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.
Mon 5/121:05 pmLGW - ORD
1 stop24h 22mMultiple Airlines
Fri 5/169:08 pmORD - LGW
1 stop27h 12mMultiple Airlines
Deal found 4/16$531
This TravelUp deal was found by Cheapflights users on 4/16. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/76:50 amLHR - ORD
1 stop11h 10mMultiple Airlines
Sun 5/186:30 pmORD - LHR
1 stop11h 20mMultiple Airlines
Deal found 4/16$546
This SWISS deal was found by Cheapflights users on 4/16. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/66:35 pmLGW - ORD
1 stop27h 20mSWISS
Tue 5/137:05 pmORD - LGW
1 stop16h 45mSWISS
Deal found 4/16$547
This United Airlines deal was found by Cheapflights users on 4/16. 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.
Wed 5/78:40 amLHR - ORD
1 stop13h 15mUnited Airlines
Mon 5/1210:40 amORD - LHR
1 stop17h 00mUnited Airlines
Deal found 4/16$548
This World Air Fares deal was found by Cheapflights users on 4/16. 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 World Air Fares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/212:20 pmLGW - ORD
2 stops17h 29mFinnair
Sat 5/106:35 pmORD - LGW
2 stops30h 00mFinnair
Deal found 4/16$549
This Lufthansa deal was found by Cheapflights users on 4/16. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/248:30 amLHR - ORD
1 stop12h 15mLufthansa
Wed 5/79:20 pmORD - LHR
Nonstop8h 25mLufthansa
Deal found 4/16$550
This Austrian Airlines deal was found by Cheapflights users on 4/17. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/246:00 amLHR - ORD
1 stop13h 20mAustrian Airlines
Mon 5/54:05 pmORD - LHR
Nonstop8h 15mAustrian Airlines
Deal found 4/17$551
This Gotogate deal was found by Cheapflights users on 4/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/111:55 amLGW - ORD
1 stop11h 25mIcelandair
Mon 12/156:30 pmORD - LGW
1 stop10h 25mIcelandair
Deal found 4/16$554
This Air Canada deal was found by Cheapflights users on 4/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/248:40 amLHR - ORD
2 stops15h 42mAir Canada
Mon 5/56:30 pmORD - LHR
1 stop11h 20mAir Canada
Deal found 4/17$555
This American Airlines deal was found by Cheapflights users on 4/16. 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.
Wed 9/177:40 amLHR - ORD
1 stop14h 05mAmerican Airlines
Wed 9/243:14 pmORD - LHR
1 stop10h 36mAmerican Airlines
Deal found 4/16$557
This TravelUp deal was found by Cheapflights users on 4/16. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/249:15 amLHR - ORD
Nonstop8h 30mBritish Airways
Wed 5/75:40 pmORD - LHR
Nonstop7h 40mBritish Airways
Deal found 4/16$558
This The Travel House deal was found by Cheapflights users on 4/16. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1112:15 pmLHR - ORD
1 stop11h 05mIcelandair
Tue 11/256:30 pmORD - LHR
1 stop19h 00mIcelandair
Deal found 4/16$561

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 April 17, 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

LGW - ORD

LGWORD

London Gatwick

Mon 5/12

1:05 pm-7:27 am

1 stop24h 22m

Chicago O'Hare Intl

Fri 5/16

9:08 pm-6:20 am

1 stop27h 12m

$531

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 5/7

6:50 am-12:00 pm

1 stop11h 10m

Chicago O'Hare Intl

Sun 5/18

6:30 pm-11:50 am

1 stop11h 20m

$546

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 5/6

6:35 pm-3:55 pm

1 stop27h 20m

Chicago O'Hare Intl

Tue 5/13

7:05 pm-5:50 pm

1 stop16h 45m

$547

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 5/1

8:40 am-3:55 pm

1 stop13h 15m

Chicago O'Hare Intl

Mon 5/5

6:35 pm-1:00 pm

1 stop12h 25m

$548

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Fri 5/2

12:20 pm-11:49 pm

2 stops17h 29m

Chicago O'Hare Intl

Sat 5/10

6:35 pm-6:35 am

2 stops30h 00m

$549

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 5/7

8:40 am-3:55 pm

1 stop13h 15m

Chicago O'Hare Intl

Mon 5/12

3:52 pm-11:35 am

1 stop13h 43m

$549

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 5/1

8:30 am-2:45 pm

1 stop12h 15m

Chicago O'Hare Intl

Mon 5/5

6:05 pm-8:20 am

Nonstop8h 15m

$551

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 4/27

6:00 am-1:20 pm

1 stop13h 20m

Chicago O'Hare Intl

Sun 5/4

4:05 pm-6:20 am

Nonstop8h 15m

$552

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 9/19

8:50 am-3:45 pm

1 stop12h 55m

Chicago O'Hare Intl

Fri 9/26

4:56 pm-11:05 am

1 stop12h 09m

$557

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 4/30

12:15 pm-2:45 pm

Nonstop8h 30m

Chicago O'Hare Intl

Thu 5/8

5:40 pm-7:20 am

Nonstop7h 40m

$558

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

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 April 17, 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 April 17, 2025.

The most flights from GB0 to CHI are scheduled on a Monday (53 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (45 on average).

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 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago when rainfall is around 1.7 in.

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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 April 17, 2025.
Read through reviews of airlines operating flights from United Kingdom to Chicago, such as Delta, KLM and LOT. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,917 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,917 reviews
Delta
8.0
Very good
7,917 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,329 reviews
Delta
8.0
Very good
7,917 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
LOT
7.6
Good
1,065 reviews
Delta
8.0
Very good
7,917 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,269 reviews
Delta
8.0
Very good
7,917 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Austrian Airlines
7.6
Good
775 reviews
Delta
8.0
Very good
7,917 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • 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 TAP AIR PORTUGAL ($503), WestJet ($504), and Aer Lingus ($510).

  • 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 Gatwick - Chicago O'Hare Intl and London Heathrow - Chicago Midway.

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

    Consider United Airlines (90%), SWISS (89%) or Air Canada (87%) 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 $2,246, our data indicates the cheapest price to be $550. The most popular route (London Heathrow - Chicago O'Hare Intl), is priced around $524.

  • 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 the United Kingdom?

Book flights to the United Kingdom if you plan to visit one of these locations
Merrillville
Hammond
Benton Harbor
Porter
Lansing
Valparaiso
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.
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Leonardo da Vinci/Fiumicino to O'Hare Intl flights
Zurich to O'Hare Intl flights
Barcelona-El Prat to Midway flights
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Bergamo to O'Hare Intl flights
Frankfurt-Hahn to O'Hare Intl flights
Madrid to Midway flights
Frankfurt to St. Louis flights
Berlin to O'Hare Intl flights
Copenhagen to O'Hare Intl flights
Bruxelles-National to Midway flights
Edinburgh to O'Hare Intl flights
Stansted to O'Hare Intl flights
Leonardo da Vinci/Fiumicino to Midway flights
Istanbul to Midway flights
Oslo Gardermoen to O'Hare Intl flights
Lyon to O'Hare Intl flights
Vicenza to O'Hare Intl flights
Manchester to O'Hare Intl flights
Munich 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$451Average$659FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$462Average$569FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$483Average$677FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$551Average$857FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$553Average$823FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$562Average$922FlexibilityNo cancel feeOn-time69%
IberiaCheapest$582Average$780FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$583Average$792FlexibilityNo cancel feeOn-time71%
FinnairCheapest$613Average$866FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$660Average$1,049FlexibilityNo cancel feeOn-time76%

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