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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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CHI
dic. 13 — dic. 201
sáb. 12/13
sáb. 12/20
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 noviembre 13, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$516
(Netflights)

One-way from

$342
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$618

Good round-trip deal

$794 or less

Good one-way deal

$627 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 ($107 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in November 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 noviembre 13, 2025.

This Mytrip deal was found by Cheapflights users on 11/11. 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.
mié. 12/37:45 amGLA - ORD
2 stops15h 35mMultiple Airlines
dom. 12/76:30 pmORD - GLA
2 stops22h 40mMultiple Airlines
Deal found 11/11$528
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
jue. 11/204:00 pmLGW - ORD
1 stop29h 25mTAP AIR PORTUGAL
dom. 11/308:25 pmORD - LGW
1 stop13h 20mTAP AIR PORTUGAL
Deal found 11/12$544
This Cheapflightsfares deal was found by Cheapflights users on 11/11. 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.
jue. 12/2510:20 amLHR - ORD
1 stop12h 25mScandinavian Airlines
mié. 12/317:20 pmORD - LHR
1 stop14h 40mScandinavian Airlines
Deal found 11/11$545
This Booking.com deal was found by Cheapflights users on 11/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/610:20 amLHR - ORD
1 stop12h 25mScandinavian Airlines
lun. 12/87:20 pmORD - LHR
2 stops15h 05mScandinavian Airlines
Deal found 11/11$546
This Gotogate deal was found by Cheapflights users on 11/11. 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.
mié. 11/2611:55 amLGW - ORD
1 stop11h 25mIcelandair
mar. 12/96:30 pmORD - LGW
1 stop10h 25mIcelandair
Deal found 11/11$548
This Gotogate deal was found by Cheapflights users on 11/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/168:35 pmLHR - ORD
1 stop26h 45mIcelandair
mar. 1/66:30 pmORD - LHR
1 stop19h 00mIcelandair
Deal found 11/13$548
This Mytrip deal was found by Cheapflights users on 11/11. 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.
mar. 11/259:00 amLTN - ORD
2 stops14h 20mMultiple Airlines
mar. 12/26:30 pmORD - LTN
2 stops19h 35mMultiple Airlines
Deal found 11/11$548
This oojo deal was found by Cheapflights users on 11/11. 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.
dom. 12/146:40 amLHR - ORD
2 stops16h 05mScandinavian Airlines
vie. 1/97:20 pmORD - LHR
2 stops17h 10mScandinavian Airlines
Deal found 11/11$549
This Kiwi.com deal was found by Cheapflights users on 11/11. 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.
jue. 12/42:00 pmLGW - ORD
1 stop30h 21mMultiple Airlines
sáb. 12/62:26 pmORD - LGW
1 stop13h 39mMultiple Airlines
Deal found 11/11$550
This Gotogate deal was found by Cheapflights users on 11/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/1011:55 amLGW - ORD
1 stop11h 25mIcelandair
lun. 12/156:30 pmORD - LGW
1 stop10h 25mIcelandair
Deal found 11/12$551
This Gotogate deal was found by Cheapflights users on 11/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/188:35 pmLHR - ORD
1 stop26h 45mIcelandair
jue. 12/46:30 pmORD - LHR
1 stop19h 00mIcelandair
Deal found 11/12$551
This Mytrip deal was found by Cheapflights users on 11/13. 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.
jue. 12/49:00 amLTN - ORD
2 stops14h 20mMultiple Airlines
mié. 12/106:30 pmORD - LTN
2 stops22h 35mMultiple Airlines
Deal found 11/13$551

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 noviembre 13, 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

GlasgowChicago

GLA - ORD

GLAORD

Glasgow Intl

jue. 2/26

12:35 pm-5:20 pm

1 stop10h 45m

Chicago O'Hare Intl

lun. 3/2

6:30 pm-9:55 am

1 stop9h 25m

$524

LondonChicago

LTN - ORD

LTNORD

London Luton

mar. 11/25

9:00 am-5:20 pm

2 stops14h 20m

Chicago O'Hare Intl

mar. 12/2

6:30 pm-8:05 pm

2 stops19h 35m

$548

LondonChicago

LHR - ORD

LHRORD

London Heathrow

jue. 1/15

7:05 am-4:45 pm

2 stops15h 40m

Chicago O'Hare Intl

dom. 1/25

7:10 pm-4:25 pm

2 stops15h 15m

$550

ManchesterChicago

MAN - ORD

MANORD

Manchester

sáb. 12/6

10:10 am-4:45 pm

1 stop12h 35m

Chicago O'Hare Intl

lun. 12/8

7:20 pm-5:55 pm

2 stops16h 35m

$555

LondonChicago

STN - ORD

STNORD

London Stansted

mar. 11/25

6:30 am-5:55 pm

1 stop17h 25m

Chicago O'Hare Intl

mar. 12/2

3:50 pm-7:50 am

1 stop10h 00m

$559

LondonChicago

STN - ORD

STNORD

London Stansted

mié. 12/3

6:30 am-2:00 pm

1 stop13h 30m

Chicago O'Hare Intl

mié. 12/10

3:50 pm-7:50 am

1 stop10h 00m

$559

LondonChicago

LTN - ORD

LTNORD

London Luton

mié. 11/26

6:50 am-5:55 pm

1 stop17h 05m

Chicago O'Hare Intl

dom. 11/30

7:40 pm-11:45 am

1 stop10h 05m

$560

LondonChicago

STN - ORD

STNORD

London Stansted

mié. 11/26

6:30 am-2:00 pm

1 stop13h 30m

Chicago O'Hare Intl

dom. 11/30

7:40 pm-6:20 pm

1 stop16h 40m

$560

LondonChicago

LTN - ORD

LTNORD

London Luton

jue. 12/4

6:50 am-5:55 pm

2 stops17h 05m

Chicago O'Hare Intl

jue. 12/11

3:50 pm-11:00 pm

2 stops25h 10m

$562

LondonChicago

LHR - ORD

LHRORD

London Heathrow

sáb. 12/6

6:40 am-4:45 pm

1 stop16h 05m

Chicago O'Hare Intl

dom. 12/7

7:20 pm-6:30 pm

1 stop17h 10m

$563

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/10

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, September is the cheapest month in which you can book a flight from United Kingdom to Chicago (average of $204). 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 noviembre 13, 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 noviembre 13, 2025.

The most flights from GB0 to CHI are scheduled on a Thursday (42 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (30 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 noviembre 13, 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
9,017 reviews

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

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
9,017 reviews
United Airlines
7.4
Good
9,017 reviews

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

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.
American Airlines
7.2
Good
11,051 reviews
United Airlines
7.4
Good
9,017 reviews

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

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
7.2
Good
1,370 reviews
United Airlines
7.4
Good
9,017 reviews

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

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
7.1
Good
578 reviews
United Airlines
7.4
Good
9,017 reviews

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

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
7,517 reviews
United Airlines
7.4
Good
9,017 reviews

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

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?

    Icelandair, Scandinavian Airlines, and United Airlines can get you from United Kingdom to Chicago in just under 9h 20m. Your travel time can differ by up to 6h 20m. 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 Aer Lingus ($535), Finnair ($535), and SWISS ($536).

  • 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 Air Canada (84%), Austrian Airlines (84%) or United Airlines (84%) 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 $1,755, our data indicates the cheapest price to be $531. The most popular route (London Heathrow - Chicago O'Hare Intl), is priced around $407.

  • 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, September is the cheapest month in which you can book a flight from United Kingdom to Chicago (average of $204). 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
Hammond
Porter
Benton Harbor
Merrillville

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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.
Charles de Gaulle to O'Hare Intl flights
Heathrow to O'Hare Intl flights
Frederic Chopin to O'Hare Intl flights
Frankfurt to O'Hare Intl flights
Orly to O'Hare Intl flights
Madrid to O'Hare Intl flights
Charles de Gaulle to Midway flights
Frederic Chopin to Midway flights
Munich to O'Hare Intl flights
Gatwick to O'Hare Intl flights
Bruxelles-National to O'Hare Intl flights
Zurich to O'Hare Intl flights
Heathrow to Midway flights
London City to O'Hare Intl flights
Istanbul to O'Hare Intl flights
Krakow to O'Hare Intl flights
Barcelona-El Prat to O'Hare Intl flights
Vienna to O'Hare Intl flights
Leonardo da Vinci/Fiumicino to O'Hare Intl flights
Amsterdam to O'Hare Intl flights
Dublin to O'Hare Intl flights
Stansted to O'Hare Intl flights
Copenhagen to O'Hare Intl flights
Luton to O'Hare Intl flights
Beauvais-Tille to O'Hare Intl flights
Duesseldorf Intl to O'Hare Intl flights
Madrid to Midway flights
Athens to O'Hare Intl flights
Vicenza to O'Hare Intl flights
Malpensa to O'Hare Intl flights
Barcelona-El Prat to Midway flights
Bruxelles-National to Midway flights
Munich to Midway flights
Berlin to O'Hare Intl flights
Modlin to O'Hare Intl flights
Lyon to O'Hare Intl flights
Málaga to O'Hare Intl flights
Ciampino to O'Hare Intl flights
Duesseldorf Intl to Midway flights
Edinburgh to O'Hare Intl flights
Linate to O'Hare Intl flights
Sofia to O'Hare Intl 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 noviembre 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$390Average$625FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$446Average$791FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$485Average$788FlexibilityNo cancel feeOn-time69%
Austrian AirlinesCheapest$530Average$897FlexibilityNo cancel feeOn-time78%
British AirwaysCheapest$531Average$776FlexibilityNo cancel feeOn-time70%
TAP AIR PORTUGALCheapest$558Average$789FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$572Average$803FlexibilityNo cancel feeOn-time71%
IberiaCheapest$599Average$794FlexibilityNo cancel feeOn-time77%
FinnairCheapest$625Average$809FlexibilityNo cancel feeOn-time76%
Brussels AirlinesCheapest$633Average$832FlexibilityNo cancel feeOn-timeN/A

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