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$392+ 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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CHI
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap 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 December 15, 2025.

This oojo deal was found by Cheapflights users on 12/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/238:35 pmLHR - ORD
1 stop26h 45mIcelandair
Thu 1/156:30 pmORD - LHR
1 stop19h 00mIcelandair
Deal found 12/15$640
This Trip.com deal was found by Cheapflights users on 12/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:40 amLHR - ORD
1 stop16h 05mScandinavian Airlines
Thu 1/87:20 pmORD - LHR
1 stop14h 40mScandinavian Airlines
Deal found 12/13$649
This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
Wed 12/247:50 pmLHR - ORD
2 stops26h 55mScandinavian Airlines
Sun 1/117:10 pmORD - LHR
1 stop17h 20mScandinavian Airlines
Deal found 12/14$668
This Scandinavian Airlines deal was found by Cheapflights users on 12/14. 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.
Thu 12/256:40 amLHR - ORD
1 stop16h 05mScandinavian Airlines
Tue 1/1311:00 amORD - LHR
2 stops23h 00mScandinavian Airlines
Deal found 12/14$690
This FlightHub deal was found by Cheapflights users on 12/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/238:35 pmLHR - ORD
1 stop26h 45mIcelandair
Tue 1/66:30 pmORD - LHR
1 stop19h 00mIcelandair
Deal found 12/15$702
This Kiwi.com deal was found by Cheapflights users on 12/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:00 amLGW - ORD
2 stops35h 25mMultiple Airlines
Fri 2/612:44 pmORD - LGW
1 stop15h 16mMultiple Airlines
Deal found 12/15$708
This Cheapflightsfares deal was found by Cheapflights users on 12/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2610:20 amLHR - ORD
1 stop12h 25mScandinavian Airlines
Thu 1/227:20 pmORD - LHR
1 stop20h 20mScandinavian Airlines
Deal found 12/15$716
This deal was found by Cheapflights users on 12/14. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2611:55 amLGW - ORD
1 stop11h 25mIcelandair
Tue 1/66:30 pmORD - LGW
1 stop10h 25mIcelandair
Deal found 12/14$728
This Mytrip deal was found by Cheapflights users on 12/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:05 amSTN - ORD
1 stop13h 55mMultiple Airlines
Sat 12/273:50 pmORD - STN
1 stop10h 00mMultiple Airlines
Deal found 12/13$743
This Kiwi.com deal was found by Cheapflights users on 12/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:00 amLGW - ORD
2 stops35h 25mMultiple Airlines
Sat 1/1712:44 pmORD - LGW
1 stop15h 21mMultiple Airlines
Deal found 12/13$751
This Mytrip deal was found by Cheapflights users on 12/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/248:15 amMAN - ORD
1 stop11h 45mMultiple Airlines
Sat 12/277:40 pmORD - MAN
1 stop19h 40mMultiple Airlines
Deal found 12/13$769
This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
Wed 12/246:30 amSTN - ORD
1 stop13h 30mMultiple Airlines
Wed 12/313:50 pmORD - STN
1 stop10h 00mMultiple Airlines
Deal found 12/14$773

Find 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 December 15, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$538
(Gotogate)

One-way from

$392
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$799

Good round-trip deal

$731 or less

Good one-way deal

$633 or less
Provider with most accurate pricing for London (LON)-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for London (LON)-Chicago (CHI) flights.
Search Deals
From United Kingdom to Chicago (CHI)
Search Deals
One-way flight from United Kingdom to Chicago (CHI)
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($108 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from United Kingdom to Chicago (CHI).
Search Deals
Price to beat on a one-way flight from United Kingdom to Chicago (CHI).
Search Deals

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 December 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

ManchesterChicago

MAN - ORD

MANORD

Manchester

Sat 1/31

10:10 am-4:45 pm

1 stop12h 35m

Chicago O'Hare Intl

Wed 2/4

7:20 pm-6:35 pm

1 stop17h 15m

$552

ManchesterChicago

MAN - ORD

MANORD

Manchester

Fri 3/13

10:10 am-5:55 pm

1 stop12h 45m

Chicago O'Hare Intl

Wed 4/1

7:35 pm-8:55 am

1 stop31h 20m

$573

ManchesterChicago

MAN - ORD

MANORD

Manchester

Tue 3/10

7:15 pm-5:45 pm

1 stop27h 30m

Chicago O'Hare Intl

Wed 4/1

7:35 pm-8:55 am

1 stop31h 20m

$573

ManchesterChicago

MAN - ORD

MANORD

Manchester

Thu 3/19

10:10 am-5:45 pm

1 stop12h 35m

Chicago O'Hare Intl

Wed 4/15

7:15 pm-6:30 pm

1 stop17h 15m

$573

ManchesterChicago

MAN - ORD

MANORD

Manchester

Wed 3/11

7:15 pm-5:45 pm

1 stop27h 30m

Chicago O'Hare Intl

Fri 4/3

7:15 pm-11:45 am

2 stops34h 30m

$576

LondonChicago

LTN - ORD

LTNORD

London Luton

Thu 1/29

9:00 am-5:20 pm

2 stops14h 20m

Chicago O'Hare Intl

Thu 2/5

6:30 pm-1:20 pm

2 stops12h 50m

$600

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Sun 1/11

2:10 pm-10:59 pm

1 stop14h 49m

Chicago Midway

Sun 1/18

6:30 pm-8:35 pm

2 stops20h 05m

$640

EdinburghChicago

EDI - ORD

EDIORD

Edinburgh Turnhouse

Wed 1/28

11:00 am-4:55 pm

3 stops35h 55m

Chicago O'Hare Intl

Wed 2/4

7:20 pm-10:15 pm

2 stops20h 55m

$646

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Mon 4/13

3:40 pm-6:15 pm

1 stop32h 35m

Chicago O'Hare Intl

Sun 4/19

7:25 pm-2:40 pm

1 stop13h 15m

$648

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Mon 1/12

2:00 pm-11:09 pm

1 stop15h 09m

Chicago Midway

Mon 1/19

10:07 am-10:00 am

1 stop17h 53m

$650

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

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, January is the cheapest month in which you can book a flight from United Kingdom to Chicago (average of $51). Flying from United Kingdom to Chicago in July is currently the most expensive (average of $626). 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 December 15, 2025.

A simple way to save on the total cost of your ticket is to fly from United Kingdom to Chicago at noon. If you’re flexible enough to do this you can expect to save up to 21% on your trip compared to booking a flight in the afternoon.

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 December 15, 2025.

The most flights from GB0 to CHI are scheduled on a Sunday (43 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (34 on average).

How often are flights from the United Kingdom to Chicago delayed?

About 11% of weekly flights between United Kingdom and Chicago have experienced delays in the past year, with the average delay time being 172 minutes.

What is the most punctual flight time for the United Kingdom to Chicago flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on the United Kingdom to Chicago flights?

Over the last year, United Airlines have had the lowest number of delays on this route, with just 5% of flights being delayed.

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 December 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
9,092 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
9,092 reviews
United Airlines
7.4
Good
9,092 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
American Airlines
7.2
Good
11,051 reviews
United Airlines
7.4
Good
9,092 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Aer Lingus
7.2
Good
1,394 reviews
United Airlines
7.4
Good
9,092 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Icelandair
7.0
Good
590 reviews
United Airlines
7.4
Good
9,092 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
British Airways
6.7
Okay
7,575 reviews
United Airlines
7.4
Good
9,092 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

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?

    Scandinavian Airlines, Icelandair, and SWISS can get you from United Kingdom to Chicago in just under 12h 35m. Your travel time can differ by up to 20h. United Kingdom and Chicago are separated by a distance of 3812 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 Scandinavian Airlines ($234), TAP AIR PORTUGAL ($381), and Icelandair ($448).

  • 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 City - Chicago O'Hare Intl.

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

    Consider Austrian Airlines (88%), Brussels Airlines (88%) or Lufthansa (88%) 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 $1,445, our data indicates the cheapest price to be $513. The most popular route (London Heathrow - Chicago O'Hare Intl), is priced around $514.

  • 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, January is the cheapest month in which you can book a flight from United Kingdom to Chicago (average of $51). Flying from United Kingdom to Chicago in July is currently the most expensive (average of $626). 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
Lansing
Merrillville
Hammond
Porter
Benton Harbor

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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
Frederic Chopin to O'Hare Intl flights
Charles de Gaulle to O'Hare Intl flights
Heathrow to O'Hare Intl flights
Frederic Chopin to Midway flights
Orly to O'Hare Intl flights
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Charles de Gaulle to Midway flights
Madrid to O'Hare Intl flights
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Dublin to O'Hare Intl flights
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Athens to O'Hare Intl flights
Zurich to O'Hare Intl flights
Frankfurt-Hahn to O'Hare Intl flights
Amsterdam to O'Hare Intl flights
Vienna to O'Hare Intl flights
London City to O'Hare Intl flights
Heathrow to Midway flights
Linate to O'Hare Intl flights
Duesseldorf Intl to O'Hare Intl flights
Leonardo da Vinci/Fiumicino to O'Hare Intl flights
Bruxelles-National to O'Hare Intl flights
Bergamo to O'Hare Intl flights
Barcelona-El Prat to O'Hare Intl flights
Madrid to Midway flights
Stansted to O'Hare Intl flights
Luton to O'Hare Intl flights
Amsterdam to Midway flights
Ciampino to O'Hare Intl flights
Barcelona-El Prat to Midway flights
Munich to Midway flights
Berlin to O'Hare Intl flights
Belgrade to O'Hare Intl flights
Katowice to O'Hare Intl flights
Sabiha Gokcen to O'Hare Intl flights
Bruxelles-National to Midway flights
Duesseldorf Intl 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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$446Average$811FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$451Average$613FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$468Average$592FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$485Average$767FlexibilityNo cancel feeOn-time69%
Austrian AirlinesCheapest$530Average$897FlexibilityNo cancel feeOn-time78%
British AirwaysCheapest$531Average$757FlexibilityNo cancel feeOn-time70%
TAP AIR PORTUGALCheapest$558Average$789FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$558Average$793FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$572Average$798FlexibilityNo cancel feeOn-time71%
FinnairCheapest$625Average$808FlexibilityNo cancel feeOn-time76%

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