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$305+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CHI
may. 4 — may. 111
dom. 5/4
dom. 5/11
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 abril 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$552
(oojo)

One-way from

$344
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$676

Good round-trip deal

$637 or less

Good one-way deal

$699 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. 12% potential increase in price ($104 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 abril 29, 2025.

This American Airlines deal was found by Cheapflights users on 4/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/610:40 amLGW - ORD
1 stop16h 45mAmerican Airlines
mar. 5/2010:22 amORD - LGW
1 stop15h 48mAmerican Airlines
Deal found 4/28$552
This oojo deal was found by Cheapflights users on 4/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/31:05 pmLHR - ORD
1 stop14h 10mIcelandair
sáb. 9/137:25 pmORD - LHR
1 stop10h 30mIcelandair
Deal found 4/28$552
This SWISS deal was found by Cheapflights users on 4/27. 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.
dom. 5/116:00 amLHR - ORD
1 stop12h 10mSWISS
dom. 5/183:45 pmORD - LHR
1 stop20h 05mSWISS
Deal found 4/27$553
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/57:25 amLHR - ORD
1 stop16h 50mUnited Airlines
jue. 5/228:52 amORD - LHR
1 stop16h 03mUnited Airlines
Deal found 4/28$554
This Orbitz deal was found by Cheapflights users on 4/28. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/56:00 amLHR - ORD
1 stop13h 20mMultiple Airlines
lun. 5/127:05 pmORD - LHR
1 stop11h 55mMultiple Airlines
Deal found 4/28$555
This Icelandair deal was found by Cheapflights users on 4/28. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/23:40 pmLGW - ORD
1 stop11h 35mIcelandair
mié. 6/2510:15 pmORD - LGW
1 stop10h 25mIcelandair
Deal found 4/28$556
This World Air Fares deal was found by Cheapflights users on 4/28. 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 World Air Fares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/58:30 amLHR - ORD
Nonstop9h 05mLufthansa
lun. 5/126:05 pmORD - LHR
Nonstop8h 15mLufthansa
Deal found 4/28$563
This Gotogate deal was found by Cheapflights users on 4/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/76:40 amLHR - ORD
1 stop16h 05mScandinavian Airlines
vie. 11/147:20 pmORD - LHR
2 stops17h 10mScandinavian Airlines
Deal found 4/28$565
This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/179:15 amLHR - ORD
Nonstop8h 35mBritish Airways
dom. 9/218:40 pmORD - LHR
Nonstop7h 50mBritish Airways
Deal found 4/29$566
This World Air Fares deal was found by Cheapflights users on 4/29. 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 World Air Fares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/188:45 amLCY - ORD
1 stop17h 10mMultiple Airlines
lun. 9/224:00 pmORD - LCY
1 stop18h 25mMultiple Airlines
Deal found 4/29$567
This Netflights deal was found by Cheapflights users on 4/28. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/58:40 amLHR - ORD
1 stop11h 30mVirgin Atlantic
vie. 5/231:30 pmORD - LHR
1 stop10h 55mVirgin Atlantic
Deal found 4/28$567
This Air Canada deal was found by Cheapflights users on 4/28. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/56:50 amLHR - ORD
2 stops14h 15mAir Canada
lun. 5/1212:00 pmORD - LHR
1 stop12h 35mAir Canada
Deal found 4/28$571

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 abril 29, 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

mié. 9/3

1:05 pm-9:15 pm

1 stop14h 10m

Chicago O'Hare Intl

sáb. 9/13

7:25 pm-11:55 am

1 stop10h 30m

$552

LondonChicago

LHR - ORD

LHRORD

London Heathrow

dom. 5/11

6:00 am-12:10 pm

1 stop12h 10m

Chicago O'Hare Intl

dom. 5/18

3:45 pm-5:50 pm

1 stop20h 05m

$553

LondonChicago

LHR - ORD

LHRORD

London Heathrow

sáb. 5/10

6:50 am-12:00 pm

1 stop11h 10m

Chicago O'Hare Intl

dom. 5/18

8:40 am-6:30 am

1 stop15h 50m

$558

LondonChicago

LGW - ORD

LGWORD

London Gatwick

jue. 9/25

3:40 pm-6:15 pm

1 stop32h 35m

Chicago O'Hare Intl

lun. 9/29

7:25 pm-2:35 pm

1 stop13h 10m

$558

LondonChicago

LHR - ORD

LHRORD

London Heathrow

vie. 5/16

8:30 am-2:45 pm

1 stop12h 15m

Chicago O'Hare Intl

lun. 5/19

1:29 pm-6:55 am

1 stop11h 26m

$563

LondonChicago

LHR - ORD

LHRORD

London Heathrow

jue. 9/25

6:50 am-2:50 pm

2 stops14h 00m

Chicago O'Hare Intl

lun. 9/29

3:50 pm-10:00 am

1 stop12h 10m

$565

LondonChicago

LHR - ORD

LHRORD

London Heathrow

mié. 9/17

9:15 am-11:50 am

Nonstop8h 35m

Chicago O'Hare Intl

dom. 9/21

8:40 pm-10:30 am

Nonstop7h 50m

$566

LondonChicago

LCY - ORD

LCYORD

London City

jue. 9/18

8:45 am-7:55 pm

1 stop17h 10m

Chicago O'Hare Intl

lun. 9/22

4:00 pm-4:25 pm

1 stop18h 25m

$567

LondonChicago

LHR - ORD

LHRORD

London Heathrow

mar. 5/13

6:00 am-12:10 pm

1 stop12h 10m

Chicago O'Hare Intl

mié. 5/21

6:19 pm-9:00 pm

2 stops20h 41m

$575

LondonChicago

LHR - ORD

LHRORD

London Heathrow

lun. 9/22

9:05 pm-4:10 pm

2 stops25h 05m

Chicago O'Hare Intl

mar. 10/7

7:15 pm-9:40 pm

1 stop20h 25m

$585

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

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 abril 29, 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 abril 29, 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 (46 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 abril 29, 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
7,936 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Comfort

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
7,936 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Comfort

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
1,333 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Comfort

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
1,069 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Comfort

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
1,273 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Comfort

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
780 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Comfort

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 WestJet ($502), Aer Lingus ($522), and TAP AIR PORTUGAL ($526).

  • 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 City - Chicago O'Hare Intl and London Gatwick - Chicago O'Hare Intl.

  • 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 $2,295, our data indicates the cheapest price to be $548. The most popular route (London Heathrow - Chicago O'Hare Intl), is priced around $500.

  • 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.
Heathrow to O'Hare Intl flights
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Frederic Chopin to Midway flights
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Heathrow to Midway flights
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Amsterdam to O'Hare Intl flights
Vienna to O'Hare Intl flights
Istanbul to O'Hare Intl flights
Madrid to Midway flights
Leonardo da Vinci/Fiumicino to O'Hare Intl flights
Bruxelles-National to Midway flights
Linate to O'Hare Intl flights
Beauvais-Tille to O'Hare Intl flights
Bergamo to O'Hare Intl flights
Oslo Gardermoen to O'Hare Intl flights
Vicenza to O'Hare Intl flights
Copenhagen to O'Hare Intl flights
Edinburgh to O'Hare Intl flights
Berlin to O'Hare Intl flights
Modlin to O'Hare Intl flights
Stansted to O'Hare Intl flights
Lyon to O'Hare Intl flights
Amsterdam to Midway flights
Barcelona-El Prat to Midway flights
Heathrow to St. Louis flights
Naples to O'Hare Intl flights
Belgrade 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 abril 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$451Average$670FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$462Average$569FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$483Average$677FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$550Average$818FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$553Average$828FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$562Average$889FlexibilityNo cancel feeOn-time69%
IberiaCheapest$582Average$776FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$584Average$800FlexibilityNo cancel feeOn-time71%
Austrian AirlinesCheapest$586Average$987FlexibilityNo cancel feeOn-time78%
FinnairCheapest$613Average$852FlexibilityNo cancel feeOn-time76%

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