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$327+ 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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CHI
ago. 5 — ago. 121
mar. 8/5
mar. 8/12
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 julio 31, 2025.

Round-trip from

$574
(Booking.com)

One-way from

$327
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$885

Good round-trip deal

$749 or less

Good one-way deal

$714 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 ($120 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 July 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 julio 31, 2025.

This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/116:50 amLHR - ORD
2 stops14h 05mAir Canada
lun. 9/156:01 pmORD - LHR
1 stop11h 49mAir Canada
Deal found 7/30$581
This Icelandair deal was found by Cheapflights users on 7/31. 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.
dom. 10/193:40 pmLGW - ORD
1 stop11h 35mIcelandair
mar. 10/287:30 pmORD - LGW
1 stop10h 25mIcelandair
Deal found 7/31$582
This ChecknFly 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/99:15 amLHR - ORD
1 stop14h 21mFinnair
lun. 10/136:58 amORD - LHR
2 stops17h 22mFinnair
Deal found 7/30$582
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/136:35 amSTN - ORD
1 stop13h 25mMultiple Airlines
sáb. 9/279:15 pmORD - STN
1 stop10h 25mMultiple Airlines
Deal found 7/30$582
This Icelandair 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/191:05 pmLHR - ORD
1 stop11h 10mIcelandair
mar. 10/147:25 pmORD - LHR
1 stop10h 30mIcelandair
Deal found 7/30$583
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
vie. 9/511:30 amLTN - ORD
1 stop13h 30mMultiple Airlines
vie. 9/129:15 pmORD - LTN
1 stop10h 20mMultiple Airlines
Deal found 7/31$583
This TravelUp 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/228:25 pmLHR - ORD
1 stop23h 35mMultiple Airlines
dom. 9/149:25 pmORD - LHR
Nonstop8h 20mMultiple Airlines
Deal found 7/30$584
This SWISS deal was found by Cheapflights users on 7/31. 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.
jue. 11/69:15 amLCY - ORD
1 stop13h 05mSWISS
mié. 11/126:50 pmORD - LCY
1 stop16h 15mSWISS
Deal found 7/31$585
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/292:00 pmLGW - ORD
2 stops26h 31mMultiple Airlines
vie. 9/56:44 pmORD - LGW
2 stops29h 36mMultiple Airlines
Deal found 7/30$586
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.
jue. 9/119:50 amLHR - ORD
1 stop11h 55mBritish Airways
mar. 9/169:15 pmORD - LHR
Nonstop7h 50mBritish Airways
Deal found 7/29$587
This TravelUp deal was found by Cheapflights users on 7/31. 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.
jue. 10/93:15 pmLHR - MDW
1 stop12h 59mVirgin Atlantic
lun. 10/131:08 pmMDW - LHR
1 stop13h 47mVirgin Atlantic
Deal found 7/31$587
This Lufthansa 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/258:45 amLCY - ORD
1 stop12h 10mMultiple Airlines
lun. 9/297:05 pmORD - LCY
1 stop11h 25mMultiple Airlines
Deal found 7/30$592

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 julio 31, 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

jue. 9/11

6:50 am-2:55 pm

2 stops14h 05m

Chicago O'Hare Intl

lun. 9/15

6:01 pm-11:50 am

1 stop11h 49m

$581

LondonChicago

LGW - ORD

LGWORD

London Gatwick

dom. 10/19

3:40 pm-9:15 pm

1 stop11h 35m

Chicago O'Hare Intl

mar. 11/18

6:30 pm-10:55 am

1 stop10h 25m

$582

LondonChicago

LHR - ORD

LHRORD

London Heathrow

jue. 10/9

9:15 am-5:36 pm

1 stop14h 21m

Chicago O'Hare Intl

lun. 10/13

6:58 am-6:20 am

2 stops17h 22m

$582

LondonChicago

STN - ORD

STNORD

London Stansted

sáb. 9/13

6:35 am-2:00 pm

1 stop13h 25m

Chicago O'Hare Intl

sáb. 9/27

9:15 pm-1:40 pm

1 stop10h 25m

$582

LondonChicago

LHR - ORD

LHRORD

London Heathrow

vie. 9/19

1:05 pm-6:15 pm

1 stop11h 10m

Chicago O'Hare Intl

mar. 10/14

7:25 pm-11:55 am

1 stop10h 30m

$583

LondonChicago

LTN - ORD

LTNORD

London Luton

vie. 9/5

11:30 am-7:00 pm

1 stop13h 30m

Chicago O'Hare Intl

vie. 9/12

9:15 pm-1:35 pm

1 stop10h 20m

$583

LondonChicago

LHR - ORD

LHRORD

London Heathrow

vie. 8/22

8:25 pm-2:00 pm

1 stop23h 35m

Chicago O'Hare Intl

dom. 9/14

9:25 pm-11:45 am

Nonstop8h 20m

$584

LondonChicago

LCY - ORD

LCYORD

London City

jue. 11/6

9:15 am-4:20 pm

1 stop13h 05m

Chicago O'Hare Intl

mié. 11/12

6:50 pm-5:05 pm

1 stop16h 15m

$585

LondonChicago

LHR - ORD

LHRORD

London Heathrow

jue. 9/11

9:50 am-3:45 pm

1 stop11h 55m

Chicago O'Hare Intl

jue. 9/18

9:15 pm-11:05 am

Nonstop7h 50m

$587

LondonChicago

LHR - MDW

LHRMDW

London Heathrow

jue. 10/9

3:15 pm-10:14 pm

1 stop12h 59m

Chicago Midway

lun. 10/13

1:08 pm-8:55 am

1 stop13h 47m

$587

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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 julio 31, 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 julio 31, 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 (48 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 julio 31, 2025.
See what other customers who have flown with Delta, KLM, and Austrian Airlines 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.
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Austrian Airlines
7.6
Good
823 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Finnair
7.6
Good
1,316 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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 ($459), JetBlue ($529), and Icelandair ($565).

  • 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 (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 $1,520, our data indicates the cheapest price to be $607. The most popular route (London Heathrow - Chicago O'Hare Intl), is priced around $445.

  • 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
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.
Frankfurt to O'Hare Intl flights
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Munich to Midway flights
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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 julio 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$390Average$626FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$462Average$569FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$485Average$840FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$504Average$864FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$552Average$793FlexibilityNo cancel feeOn-time70%
TAP AIR PORTUGALCheapest$558Average$789FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$582Average$793FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$583Average$792FlexibilityNo cancel feeOn-time71%
Austrian AirlinesCheapest$586Average$967FlexibilityNo cancel feeOn-time78%
FinnairCheapest$607Average$838FlexibilityNo cancel feeOn-time76%

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