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$363+ 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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CHI
Aug 29 — Sep 51
Sat 8/29
Sat 9/5
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 July 30, 2026.

This Mytrip deal was found by Cheapflights users on 7/28. 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 9/163:10 pm
EDI
-
ORD
2 stops33h 05m
Multiple Airlines
Mon 9/217:25 pm
ORD
-
EDI
2 stops23h 10m
Multiple Airlines
Deal found 7/28$552
This Mytrip deal was found by Cheapflights users on 7/26. 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 9/98:25 am
BHX
-
ORD
2 stops34h 15m
Multiple Airlines
Wed 9/236:00 pm
ORD
-
BHX
2 stops23h 55m
Multiple Airlines
Deal found 7/26$591
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 11/116:00 am
EDI
-
ORD
1 stop14h 00m
Multiple Airlines
Tue 11/178:10 pm
ORD
-
EDI
1 stop14h 40m
Multiple Airlines
Deal found 7/29$620
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 11/116:00 am
EDI
-
ORD
1 stop14h 00m
Multiple Airlines
Mon 11/168:10 pm
ORD
-
EDI
1 stop13h 10m
Multiple Airlines
Deal found 7/29$628
This Icelandair deal was found by Cheapflights users on 7/29. 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.
Tue 11/1011:20 am
EDI
-
ORD
1 stop12h 00m
Icelandair
Mon 11/166:30 pm
ORD
-
EDI
1 stop9h 50m
Icelandair
Deal found 7/29$629
This Mytrip deal was found by Cheapflights users on 7/29. 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.
Fri 9/41:40 pm
EDI
-
ORD
2 stops34h 35m
Multiple Airlines
Tue 9/87:25 pm
ORD
-
EDI
2 stops13h 55m
Multiple Airlines
Deal found 7/29$638
This Mytrip deal was found by Cheapflights users on 7/28. 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.
Tue 10/611:10 pm
BHX
-
ORD
2 stops28h 15m
Multiple Airlines
Tue 10/137:25 pm
ORD
-
BHX
2 stops19h 20m
Multiple Airlines
Deal found 7/28$651
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 11/127:30 am
EDI
-
ORD
1 stop12h 30m
Multiple Airlines
Sun 11/228:10 pm
ORD
-
EDI
1 stop17h 35m
Multiple Airlines
Deal found 7/29$651
This Gotogate deal was found by Cheapflights users on 7/29. 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.
Wed 9/93:40 pm
LGW
-
ORD
1 stop11h 45m
Icelandair
Sat 9/1210:25 pm
ORD
-
LGW
1 stop10h 10m
Icelandair
Deal found 7/29$655
This The Travel House deal was found by Cheapflights users on 7/30. 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 9/11:05 pm
LHR
-
ORD
1 stop11h 10m
Icelandair
Tue 9/87:25 pm
ORD
-
LHR
1 stop18h 55m
Icelandair
Deal found 7/30$655
This Mytrip deal was found by Cheapflights users on 7/28. 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 10/143:10 pm
EDI
-
ORD
2 stops33h 05m
Multiple Airlines
Wed 10/217:25 pm
ORD
-
EDI
2 stops22h 55m
Multiple Airlines
Deal found 7/28$655
This The Travel House deal was found by Cheapflights users on 7/30. 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 9/11:00 pm
LGW
-
ORD
1 stop11h 15m
Icelandair
Tue 9/810:25 pm
ORD
-
LGW
1 stop31h 20m
Icelandair
Deal found 7/30$656

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 July 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$552
(Mytrip)

One-way from

$363
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$957

Good round-trip deal

$863 or less

Good one-way deal

$714 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. 16% potential increase in price ($149 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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 July 30, 2026.
Use the filters below to find and compare flights from the United Kingdom to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 9/9

8:40 am-3:55 pm

1 stop13h 15m

Chicago O'Hare Intl

Wed 9/9

6:15 pm-10:40 am

1 stop10h 25m

$662

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 12/2

11:55 am-5:20 pm

1 stop11h 25m

Chicago O'Hare Intl

Sat 12/5

6:30 pm-10:55 am

1 stop10h 25m

$673

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 12/2

12:15 pm-5:20 pm

1 stop11h 05m

Chicago O'Hare Intl

Thu 12/10

6:30 pm-10:50 am

1 stop10h 20m

$673

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 9/30

3:40 pm-6:15 pm

1 stop32h 35m

Chicago O'Hare Intl

Sat 10/10

7:25 pm-2:35 pm

1 stop13h 10m

$675

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 1/13

8:35 pm-5:20 pm

1 stop26h 45m

Chicago O'Hare Intl

Sun 1/17

6:30 pm-10:50 am

1 stop10h 20m

$675

BirminghamChicago

BHX - ORD

BHXORD

Birmingham

Fri 9/25

5:55 am-6:39 pm

2 stops18h 44m

Chicago O'Hare Intl

Sat 10/3

9:18 pm-9:45 am

2 stops30h 27m

$684

BirminghamChicago

BHX - ORD

BHXORD

Birmingham

Tue 9/15

8:10 am-2:00 pm

1 stop11h 50m

Chicago O'Hare Intl

Wed 9/23

3:45 pm-7:40 am

1 stop9h 55m

$687

LondonChicago

LTN - ORD

LTNORD

London Luton

Wed 9/9

6:15 am-7:48 pm

3 stops19h 33m

Chicago O'Hare Intl

Mon 11/16

3:55 pm-10:45 am

1 stop12h 50m

$707

LondonChicago

LTN - ORD

LTNORD

London Luton

Wed 9/16

6:15 am-2:00 pm

1 stop13h 45m

Chicago O'Hare Intl

Wed 9/23

9:00 pm-3:25 pm

1 stop12h 25m

$712

ManchesterChicago

MAN - ORD

MANORD

Manchester

Thu 11/12

12:55 pm-4:45 pm

2 stops33h 50m

Chicago O'Hare Intl

Fri 11/27

7:15 pm-8:40 am

2 stops31h 25m

$722

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 60 resultsSorted by cheapest first
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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, February is the cheapest month in which you can book a flight from United Kingdom to Chicago (average of $641). Flying from United Kingdom to Chicago in July is currently the most expensive (average of $1,038). 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 July 30, 2026.

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 July 30, 2026.

The most flights from GB0 to CHI are scheduled on a Wednesday (52 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (49 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 179 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 early afternoon tend to experience delays more often.

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

Wednesday tends to have the lowest number of delays on this route, whereas Tuesday 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 6% of flights being delayed.

How far ahead should I book a flight from United Kingdom to Chicago?

Booking 62 days in advance of your planned departure date is, on average, the best time to get cheap flights from United Kingdom to Chicago. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 July 30, 2026.
See what other customers who have flown with United Airlines,Aer Lingus, andIcelandair 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
10,048 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

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
10,048 reviews
United Airlines
7.4
Good
10,048 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

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
7.3
Good
1,682 reviews
United Airlines
7.4
Good
10,048 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

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
716 reviews
United Airlines
7.4
Good
10,048 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

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.
Lufthansa
6.8
Okay
8,165 reviews
United Airlines
7.4
Good
10,048 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

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
8,129 reviews
United Airlines
7.4
Good
10,048 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

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?

    United Airlines, Icelandair, and Lufthansa can get you from United Kingdom to Chicago in just under 11h 25m. Your travel time can differ by up to 7h 19m. United Kingdom and Chicago are separated by a distance of 3960 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 Icelandair ($380), Aer Lingus ($432), and JetBlue ($471).

  • 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 Air Canada (90%), Austrian Airlines (90%) or United Airlines (90%) 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 $2,669, our data indicates the cheapest price to be $554. The most popular route (London Heathrow - Chicago O'Hare Intl), is priced around $477.

  • 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, February is the cheapest month in which you can book a flight from United Kingdom to Chicago (average of $641). Flying from United Kingdom to Chicago in July is currently the most expensive (average of $1,038). 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
Benton Harbor
Lansing
Merrillville
Valparaiso
Hammond
Saint Joseph
Porter

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Top 8 airlines flying from United Kingdom to Chicago

Discover the top 8 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 July 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$421Average$648FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$446Average$822FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$467Average$614FlexibilityNo cancel feeOn-time77%
Austrian AirlinesCheapest$530Average$931FlexibilityNo cancel feeOn-time78%
British AirwaysCheapest$531Average$847FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$572Average$930FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$583Average$931FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$703Average$877FlexibilityNo cancel feeOn-time76%

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