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Cheap flights from the United Kingdom to Chicago from £250

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 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CHI
12 10月 — 19 10月1
1 adult
1 adult, Economy

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 12 9月 2025.

Round-trip from

£396

One-way from

£288

Popular in

July

Cheapest in

February

Average price

£461

Good round-trip deal

£499 or less

Good one-way deal

£496 or less
21/9-14/10
  • 21/9-14/10
  • 2 total stops
  • 51h 18m total
  • United Kingdom to Chicago
Search Deals
8/10
  • 8/10
  • 2 total stops
  • 30h 59m total
  • United Kingdom to Chicago
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£62 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 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

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 12 9月 2025.

週六 20/910:00LGW - ORD
1 stop29h 18mMultiple Airlines
週二 14/1006:00ORD - LGW
1 stop22h 00mMultiple Airlines
Deal found 10/9£396
週二 16/906:50LHR - ORD
1 stop11h 15mMultiple Airlines
週一 22/919:05ORD - LHR
1 stop15h 20mMultiple Airlines
Deal found 10/9£396
週三 29/1006:50LTN - ORD
2 stops19h 15mMultiple Airlines
週日 2/1119:20ORD - LTN
2 stops20h 40mMultiple Airlines
Deal found 10/9£396
週四 2/1014:00LGW - ORD
1 stop32h 12mMultiple Airlines
週四 9/1006:00ORD - LGW
1 stop22h 00mMultiple Airlines
Deal found 11/9£396
週二 16/906:50LHR - ORD
1 stop11h 15mMultiple Airlines
週一 29/921:25ORD - LHR
Nonstop8h 20mMultiple Airlines
Deal found 11/9£396
週六 6/1214:00LGW - MDW
1 stop29h 10mMultiple Airlines
週二 13/107:44MDW - LGW
1 stop16h 16mMultiple Airlines
Deal found 11/9£397
週六 20/910:00LGW - ORD
1 stop29h 18mMultiple Airlines
週六 27/917:40ORD - LGW
2 stops30h 40mMultiple Airlines
Deal found 10/9£397
週六 20/907:45LHR - ORD
2 stops15h 20mUnited Airlines
週三 24/914:32ORD - LHR
1 stop10h 23mUnited Airlines
Deal found 11/9£397
週四 2/1014:00LGW - MDW
1 stop24h 53mMultiple Airlines
週一 6/1008:19MDW - LGW
1 stop19h 41mMultiple Airlines
Deal found 11/9£398
週六 20/907:45LHR - ORD
2 stops15h 20mUnited Airlines
週二 30/913:17ORD - LHR
1 stop10h 38mUnited Airlines
Deal found 10/9£398
週四 2/1006:00LHR - ORD
1 stop13h 20mAustrian Airlines
週五 10/1016:20ORD - LHR
1 stop34h 25mAustrian Airlines
Deal found 10/9£399
週三 17/914:00LGW - ORD
2 stops27h 58mMultiple Airlines
週三 1/1017:17ORD - LGW
1 stop34h 43mMultiple Airlines
Deal found 10/9£399

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 12 9月 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

LGW - MDW

LGWMDW

London Gatwick

週六 6/12

14:00-13:10

1 stop29h 10m

Chicago Midway

週二 13/1

07:44-06:00

1 stop16h 16m

£397

LondonChicago

LHR - ORD

LHRORD

London Heathrow

週四 9/10

08:40-15:55

1 stop13h 15m

Chicago O'Hare Intl

週一 13/10

05:01-09:40

1 stop22h 39m

£398

LondonChicago

LHR - ORD

LHRORD

London Heathrow

週五 26/9

07:45-16:35

2 stops14h 50m

Chicago O'Hare Intl

週日 2/11

21:30-09:40

1 stop30h 10m

£398

LondonChicago

LTN - ORD

LTNORD

London Luton

週四 30/10

09:00-18:20

2 stops14h 20m

Chicago O'Hare Intl

週日 2/11

18:30-22:00

2 stops21h 30m

£399

LondonChicago

LHR - ORD

LHRORD

London Heathrow

週二 2/12

20:35-17:20

1 stop26h 45m

Chicago O'Hare Intl

週一 12/1

18:30-10:50

1 stop10h 20m

£400

LondonChicago

LHR - ORD

LHRORD

London Heathrow

週六 1/11

06:50-13:10

1 stop11h 20m

Chicago O'Hare Intl

週六 8/11

15:45-05:55

Nonstop8h 10m

£404

LondonChicago

LHR - ORD

LHRORD

London Heathrow

週四 30/10

07:05-18:45

2 stops16h 40m

Chicago O'Hare Intl

週日 2/11

19:20-18:50

2 stops17h 30m

£405

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

週四 2/10

14:00-07:11

2 stops23h 11m

Chicago Midway

週日 5/10

10:13-10:10

1 stop17h 57m

£408

LondonChicago

LHR - ORD

LHRORD

London Heathrow

週二 7/10

08:30-11:30

Nonstop9h 00m

Chicago O'Hare Intl

週二 14/10

08:40-06:30

1 stop15h 50m

£408

LondonChicago

LCY - ORD

LCYORD

London City

週六 6/12

08:40-16:20

1 stop13h 40m

Chicago O'Hare Intl

週日 7/12

16:10-18:40

1 stop20h 30m

£408

Flights are sorted by cheapest return flights first.

Deals found on 12/9

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 return 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 £595). Flying from United Kingdom to Chicago in July is currently the most expensive (average of £843). 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 12 9月 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 12 9月 2025.

The most flights from GB0 to CHI are scheduled on a Thursday (53 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (46 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 12 9月 2025.
Read reviews from past customers who have flown with Finnair, Aer Lingus, andIcelandair from the United Kingdom to Chicago. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,323 reviews
Check prices

Food

6.7

Boarding

7.6

Overall

7.6

Entertainment

6.9

Crew

8.1

Comfort

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Finnair
7.6
Good
1,323 reviews
Finnair
7.6
Good
1,323 reviews
Check prices

Food

6.7

Boarding

7.6

Overall

7.6

Entertainment

6.9

Crew

8.1

Comfort

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Aer Lingus
7.2
Good
1,271 reviews
Finnair
7.6
Good
1,323 reviews
Check prices

Food

6.7

Boarding

7.6

Overall

7.6

Entertainment

6.9

Crew

8.1

Comfort

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Icelandair
7.0
Good
546 reviews
Finnair
7.6
Good
1,323 reviews
Check prices

Food

6.7

Boarding

7.6

Overall

7.6

Entertainment

6.9

Crew

8.1

Comfort

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Lufthansa
6.8
Okay
7,409 reviews
Finnair
7.6
Good
1,323 reviews
Check prices

Food

6.7

Boarding

7.6

Overall

7.6

Entertainment

6.9

Crew

8.1

Comfort

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
British Airways
6.7
Okay
7,361 reviews
Finnair
7.6
Good
1,323 reviews
Check prices

Food

6.7

Boarding

7.6

Overall

7.6

Entertainment

6.9

Crew

8.1

Comfort

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

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?

    Departing from United Kingdom to Chicago will take you 13h 15m. The distance from United Kingdom to Chicago is about 3939 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from United Kingdom to Chicago one-way?

    One-way options have recently been found by users for as low as £337 on TAP AIR PORTUGAL. Other airlines that offer cheap prices include Delta from £402 and Lufthansa from £409 one-way.

  • 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?

    No one likes to see their flight delayed. When booking a flight from United Kingdom to Chicago consider choosing Air Canada (75%), Austrian Airlines (75%) or United Airlines (75%) as they are the most reliable in getting you off to your destination on time.

  • 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 £422. The most popular route (London Heathrow - Chicago O'Hare Intl), is priced around £317.

  • 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 holiday 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 £595). Flying from United Kingdom to Chicago in July is currently the most expensive (average of £843). 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

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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
Heathrow to Midway flights
Gatwick to O'Hare Intl flights
London City to O'Hare Intl flights
Stansted to O'Hare Intl flights
Luton to O'Hare Intl flights
Gatwick to Midway flights
Manchester to O'Hare Intl flights
Heathrow to St. Louis flights
Manchester to Midway flights
Edinburgh to O'Hare Intl flights
Gatwick to St. Louis flights
Istanbul to O'Hare Intl flights
Bruxelles-National to O'Hare Intl flights
Edinburgh to Midway flights
London City to St. Louis flights
Grimsby to O'Hare Intl flights
Glasgow Intl to O'Hare Intl flights
Birmingham to O'Hare Intl flights
London City to Midway flights
Newcastle upon Tyne to O'Hare Intl flights
Birmingham to Midway flights
Birmingham to St. Louis flights
Glasgow Intl to Midway flights
Newcastle upon Tyne to St. Louis flights
Dublin to O'Hare Intl flights
Manchester to St. Louis flights
Belfast Intl to O'Hare Intl flights
Leeds to O'Hare Intl flights
Newcastle upon Tyne to Midway flights
Belfast City to O'Hare Intl flights
Heathrow to Peoria flights
Southampton to O'Hare Intl flights
Luton to St. Louis flights
Stansted to St. Louis flights
Dublin to Midway flights
Norwich to O'Hare Intl flights
Bristol to O'Hare Intl flights
Cardiff to O'Hare Intl flights
Heathrow to Moline flights
London City to Peoria flights
Bristol to Midway flights
Southend to O'Hare Intl flights
Heathrow to Springfield flights
Cardiff to Midway flights
Leeds to Midway flights
Glasgow Intl to St. Louis flights
Edinburgh to St. Louis 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 858,174 searches. Data last updated 12 9月 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£310Average£550FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£324Average£646FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Air FranceCheapest£334Average£575FlexibilityNo cancel feeOn-time77%
Search Air France flights
Scandinavian AirlinesCheapest£351Average£463FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£365Average£609FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
British AirwaysCheapest£375Average£544FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£378Average£598FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Brussels AirlinesCheapest£391Average£549FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
LufthansaCheapest£394Average£618FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Austrian AirlinesCheapest£398Average£566FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from United Kingdom to Chicago?

When you search for this flight from United Kingdom to Chicago, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from United Kingdom to Chicago?

Cheapflights simply makes it quick and affordable to book flights from United Kingdom to Chicago by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from United Kingdom to Chicago with no change fees?

Need flexible booking options for your flight to Chicago from United Kingdom? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from United Kingdom to Chicago become cheaper?

Yes, Cheapflights offers price alerts on United Kingdom to Chicago flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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