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Cheap flights from the United Kingdom to Chicago from £270

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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CHI
3 Mar — 10 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to Chicago

Enter your travel dates to find the best prices.

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 1 February 2026.

Mon 5/1015:40
LGW
-
ORD
1 stop32h 35m
Icelandair
Thu 15/1019:25
ORD
-
LGW
1 stop13h 15m
Icelandair
Deal found 30/1£387
Thu 26/207:05
LHR
-
ORD
2 stops15h 40m
Scandinavian Airlines
Mon 2/319:20
ORD
-
LHR
2 stops15h 05m
Scandinavian Airlines
Deal found 31/1£387
Thu 5/314:00
LGW
-
ORD
1 stop25h 06m
Multiple Airlines
Sat 7/318:51
ORD
-
LGW
1 stop29h 09m
Multiple Airlines
Deal found 31/1£388
Sat 18/413:05
LHR
-
ORD
1 stop11h 10m
Icelandair
Tue 21/419:25
ORD
-
LHR
1 stop10h 30m
Icelandair
Deal found 31/1£388
Thu 26/211:55
LGW
-
ORD
1 stop11h 25m
Icelandair
Sun 1/318:30
ORD
-
LGW
1 stop10h 25m
Icelandair
Deal found 30/1£388
Mon 2/310:20
LHR
-
ORD
1 stop12h 25m
Scandinavian Airlines
Mon 16/320:20
ORD
-
LHR
1 stop14h 40m
Scandinavian Airlines
Deal found 31/1£388
Sat 7/219:55
LHR
-
ORD
1 stop24h 50m
TAP AIR PORTUGAL
Wed 18/219:10
ORD
-
LHR
1 stop21h 30m
TAP AIR PORTUGAL
Deal found 30/1£389
Tue 1/915:40
LGW
-
ORD
1 stop11h 45m
Icelandair
Sun 4/1022:25
ORD
-
LGW
1 stop10h 15m
Icelandair
Deal found 30/1£391
Mon 23/211:55
LGW
-
ORD
1 stop11h 25m
Icelandair
Fri 27/218:30
ORD
-
LGW
1 stop10h 25m
Icelandair
Deal found 31/1£391
Sun 22/220:35
LHR
-
ORD
1 stop26h 45m
Icelandair
Sun 1/318:30
ORD
-
LHR
1 stop19h 00m
Icelandair
Deal found 30/1£391
Thu 24/915:40
LGW
-
ORD
1 stop32h 35m
Icelandair
Wed 30/922:25
ORD
-
LGW
1 stop10h 15m
Icelandair
Deal found 30/1£392
Tue 17/316:35
LGW
-
ORD
1 stop28h 25m
TAP AIR PORTUGAL
Wed 8/418:00
ORD
-
LGW
1 stop14h 00m
TAP AIR PORTUGAL
Deal found 31/1£394

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 1 February 2026.

Round-trip from

£387

One-way from

£270

Popular in

July

Cheapest in

February

Average price

£422

Good round-trip deal

£481 or less

Good one-way deal

£415 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 26/2-2/3
  • 4 total stops
  • 30h 45m total
  • United Kingdom to Chicago
Search Deals
9/5
  • 9/5
  • 3 total stops
  • 33h 00m total
  • United Kingdom to Chicago
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£63 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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

 
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 1 February 2026.
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 - ORD

LGWORD

London Gatwick

Mon 2/3

14:00-19:47

1 stop35h 47m

Chicago O'Hare Intl

Mon 16/3

09:30-10:00

1 stop19h 30m

£396

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 4/3

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Tue 10/3

19:30-10:55

1 stop10h 25m

£402

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 4/3

20:35-17:20

1 stop26h 45m

Chicago O'Hare Intl

Tue 10/3

19:30-10:50

1 stop10h 20m

£405

ManchesterChicago

MAN - ORD

MANORD

Manchester

Thu 26/2

12:55-16:45

2 stops33h 50m

Chicago O'Hare Intl

Mon 2/3

19:20-18:35

1 stop17h 15m

£415

ManchesterChicago

MAN - ORD

MANORD

Manchester

Fri 13/2

19:15-16:45

1 stop27h 30m

Chicago O'Hare Intl

Wed 18/2

19:20-09:30

1 stop32h 10m

£430

EdinburghChicago

EDI - ORD

EDIORD

Edinburgh Turnhouse

Fri 6/3

14:00-16:45

3 stops32h 45m

Chicago O'Hare Intl

Wed 18/3

20:20-22:15

2 stops20h 55m

£434

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Mon 2/3

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Sun 8/3

19:30-10:55

1 stop10h 25m

£434

ManchesterChicago

MAN - ORD

MANORD

Manchester

Wed 18/3

11:55-00:22

2 stops17h 27m

Chicago O'Hare Intl

Wed 25/3

07:17-11:00

3 stops22h 43m

£436

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 13/3

06:40-17:55

2 stops16h 15m

Chicago O'Hare Intl

Wed 18/3

20:20-18:50

2 stops17h 30m

£442

ManchesterChicago

MAN - ORD

MANORD

Manchester

Wed 18/3

10:10-17:45

1 stop12h 35m

Chicago O'Hare Intl

Wed 25/3

20:20-09:30

1 stop32h 10m

£454

Flights are sorted by cheapest return flights first.

Deals found on 30/1

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 £66). Flying from United Kingdom to Chicago in July is currently the most expensive (average of £456). 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 1 February 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 1 February 2026.

The most flights from GB0 to CHI are scheduled on a Saturday (44 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (13 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 170 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 evening tend to experience delays more often.

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

Thursday tends to have the lowest number of delays on this route, whereas Friday 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 past year, United Airlines have had the lowest number of delays on this route, with just 5% of flights being delayed.

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 1 February 2026.
Read reviews from past customers who have flown with United Airlines, 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.
United Airlines
7.4
Good
9,219 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Overall

7.4

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
9,219 reviews
United Airlines
7.4
Good
9,219 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Overall

7.4

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
1,444 reviews
United Airlines
7.4
Good
9,219 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Overall

7.4

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
606 reviews
United Airlines
7.4
Good
9,219 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Overall

7.4

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
7,758 reviews
United Airlines
7.4
Good
9,219 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Overall

7.4

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
7,706 reviews
United Airlines
7.4
Good
9,219 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Overall

7.4

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?

    Departing from United Kingdom to Chicago will take you 11h 25m. The distance from United Kingdom to Chicago is about 3960 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 £287 on TAP AIR PORTUGAL. Other airlines that offer cheap prices include JetBlue from £304 and Scandinavian Airlines from £312 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 Heathrow - Chicago Midway and London Gatwick - 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 SWISS (88%), Austrian Airlines (87%) or Air Canada (87%) 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 £1,264, our data indicates the cheapest price to be £362. The most popular route (London Heathrow - Chicago O'Hare Intl), is priced around £378.

  • 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 £66). Flying from United Kingdom to Chicago in July is currently the most expensive (average of £456). 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
Edinburgh to O'Hare Intl flights
Manchester to O'Hare Intl flights
Gatwick to Midway flights
Heathrow to St. Louis flights
Manchester to Midway flights
Edinburgh to Midway flights
Glasgow Intl to O'Hare Intl flights
Birmingham to O'Hare Intl flights
Dublin to O'Hare Intl flights
Leeds to O'Hare Intl flights
Gatwick to St. Louis flights
Glasgow Intl to Midway flights
Newcastle upon Tyne to O'Hare Intl flights
Liverpool to O'Hare Intl flights
Stansted to St. Louis flights
Birmingham to Midway flights
Grimsby to O'Hare Intl flights
Dublin to Midway flights
Bristol to O'Hare Intl flights
London City to St. Louis flights
Leeds to Midway flights
Norwich to O'Hare Intl flights
Heathrow to Moline flights
Bristol to Midway flights
Belfast Intl to O'Hare Intl flights
Belfast City to O'Hare Intl flights
Manchester to St. Louis flights
Heathrow to Evansville flights
Edinburgh to St. Louis flights
Newcastle upon Tyne to Midway flights
Southampton to O'Hare Intl flights
Darlington to O'Hare Intl flights
Heathrow to Champaign flights
Birmingham to St. Louis flights
Cardiff to O'Hare Intl flights
Bruxelles-National to O'Hare Intl flights
Athens to O'Hare Intl flights
Heathrow to Peoria flights
Inverness to O'Hare Intl flights
Glasgow Intl to St. Louis flights
London City to Moline flights
Manchester to Peoria flights
Manchester to Moline flights
Gatwick to Champaign 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 1 February 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£281Average£548FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapest£281Average£653FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£338Average£573FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Scandinavian AirlinesCheapest£352Average£452FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Aer LingusCheapest£357Average£698FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
British AirwaysCheapest£371Average£552FlexibilityNo cancel feeOn-time70%
Search British Airways flights
TAP AIR PORTUGALCheapest£375Average£600FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Brussels AirlinesCheapest£378Average£532FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
Austrian AirlinesCheapest£393Average£593FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
United AirlinesCheapest£401Average£600FlexibilityNo cancel feeOn-time69%
Search United 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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