Cheap flights from London to Chicago from £357

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 26/5. Fares are subject to change and may not be available on all flights or dates of travel.
LON — CHI
8 2月 — 15 2月1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to Chicago are usually found in February or November, booked 7 days in advance, depart on a Wednesday or Tuesday and return on a Sunday

Cheap flight deals from London to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Chicago (CHI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 9 1月 2026.

Round-trip from

£399

One-way from

£357

Popular in

July

Cheapest in

February

Average price

£462

Good round-trip deal

£519 or less

Good one-way deal

£445 or less
British Airways
  • British Airways
  • 5/2-12/2
  • 2 total stops
  • 24h 30m total
  • London to Chicago
28/2
  • 28/2
  • 1 total stop
  • 25h 15m total
  • London to Chicago
Highest demand for flights based on searches. 14% potential increase in price (£65 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Average for round-trip flights in January 2026
Price to beat on a round-trip flight from London (LON) to Chicago (CHI).
Price to beat on a one-way flight from London (LON) to Chicago (CHI).

Find flight deals from London to Chicago

Enter your travel dates to find the best prices.

Cheapest flights from London to Chicago
Explore the most affordable flight options available from London to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 1月 2026.

週一 12/120:35LHR - ORD
1 stop26h 45mIcelandair
週一 19/118:30ORD - LHR
1 stop19h 00mIcelandair
Deal found 7/1£399
週六 17/106:00LHR - ORD
1 stop12h 45mMultiple Airlines
週六 24/121:05ORD - LHR
Nonstop8h 10mMultiple Airlines
Deal found 7/1£400
週五 16/106:00LHR - ORD
1 stop12h 45mMultiple Airlines
週四 29/115:45ORD - LHR
Nonstop8h 10mMultiple Airlines
Deal found 8/1£401
週六 7/207:40LHR - ORD
1 stop12h 30mMultiple Airlines
週日 22/221:15ORD - LHR
Nonstop8h 00mMultiple Airlines
Deal found 7/1£402
週六 7/212:10LHR - ORD
1 stop13h 05mBritish Airways
週六 28/217:10ORD - LHR
Nonstop7h 45mBritish Airways
Deal found 8/1£402
週六 14/207:50LHR - ORD
1 stop17h 25mBritish Airways
週日 22/221:00ORD - LHR
1 stop12h 35mBritish Airways
Deal found 8/1£403
週五 6/209:00LHR - ORD
1 stop13h 20mUnited Airlines
週六 14/221:15ORD - LHR
Nonstop8h 00mUnited Airlines
Deal found 7/1£404
週三 11/211:55LGW - ORD
1 stop11h 25mIcelandair
週四 19/218:30ORD - LGW
1 stop10h 25mIcelandair
Deal found 7/1£405
週五 13/207:40LHR - ORD
1 stop12h 30mLufthansa
週日 22/217:50ORD - LHR
Nonstop8h 05mLufthansa
Deal found 8/1£405
週四 22/118:40LGW - ORD
2 stops31h 30mMultiple Airlines
週三 28/118:50ORD - LGW
1 stop17h 00mMultiple Airlines
Deal found 7/1£405
週四 15/107:40LHR - ORD
1 stop12h 30mLufthansa
週三 28/121:05ORD - LHR
Nonstop8h 10mLufthansa
Deal found 8/1£405
週一 2/218:40LGW - ORD
1 stop27h 40mSWISS
週日 8/218:50ORD - LGW
1 stop17h 00mSWISS
Deal found 7/1£406

Cheapflights Fare Finder

 
Customise your flight search to find flights from London 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 9 1月 2026.
Use the filters below to find and compare flights from London to Chicago that are best for you.

Fly from

London

Fly to

Chicago

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

週六 21/2

12:50-19:15

1 stop12h 25m

Chicago O'Hare Intl

週六 28/2

20:35-10:25

Nonstop7h 50m

£401

LondonChicago

LHR - ORD

LHRORD

London Heathrow

週三 27/5

06:40-16:10

1 stop15h 30m

Chicago O'Hare Intl

週日 31/5

19:15-18:50

2 stops17h 35m

£402

LondonChicago

LHR - ORD

LHRORD

London Heathrow

週日 25/1

13:45-16:20

1 stop32h 35m

Chicago O'Hare Intl

週一 9/2

17:50-07:55

Nonstop8h 05m

£402

LondonChicago

LHR - ORD

LHRORD

London Heathrow

週三 4/3

07:50-14:00

1 stop12h 10m

Chicago O'Hare Intl

週二 31/3

22:25-12:15

Nonstop7h 50m

£402

LondonChicago

LHR - ORD

LHRORD

London Heathrow

週四 5/2

13:45-16:20

1 stop32h 35m

Chicago O'Hare Intl

週四 12/2

17:50-07:55

Nonstop8h 05m

£402

LondonChicago

LHR - ORD

LHRORD

London Heathrow

週三 4/3

07:50-14:00

1 stop12h 10m

Chicago O'Hare Intl

週二 10/3

19:40-08:35

Nonstop7h 55m

£402

LondonChicago

LHR - ORD

LHRORD

London Heathrow

週日 8/2

12:10-19:15

1 stop13h 05m

Chicago O'Hare Intl

週日 15/2

20:35-10:25

Nonstop7h 50m

£404

LondonChicago

LHR - ORD

LHRORD

London Heathrow

週五 13/2

07:40-14:10

1 stop12h 30m

Chicago O'Hare Intl

週日 22/2

21:15-11:15

Nonstop8h 00m

£405

LondonChicago

LHR - ORD

LHRORD

London Heathrow

週五 13/2

07:40-14:10

1 stop12h 30m

Chicago O'Hare Intl

週五 20/2

13:02-06:40

1 stop11h 38m

£405

LondonChicago

LHR - ORD

LHRORD

London Heathrow

週一 13/4

08:50-12:54

2 stops34h 04m

Chicago O'Hare Intl

週四 23/4

18:40-12:50

1 stop12h 10m

£407

Flights are sorted by cheapest return flights first.

Deals found on 7/1

Showing 1-10 of 60 results
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Best time to book a flight from London to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from London 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 London to Chicago

How far ahead should I book a flight from London to Chicago?

Use this chart to determine the optimal time to book a return flight from London to Chicago. Price data was last updated on 2 January 2026.

To ensure you get the cheapest price possible for a flight from London to Chicago, you should look to book at least 7 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from London to Chicago?

Currently, December is the cheapest month in which you can book a flight from London to Chicago (average of £218). Flying from London to Chicago in July is currently the most expensive (average of £501). 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 LON to CHI?

Find hourly flight availability from London 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 9 1月 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London to Chicago as you normally would.

Weekly flight availability from London to Chicago

Explore weekly flight availability from London 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 9 1月 2026.

The most flights from LON to CHI are scheduled on a Wednesday (36 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (28 on average).

How much does it cost for a return flight from London to Chicago?

What’s the top stopover airport for flights from London to Chicago?

Share of one-stop return flights from London to Chicago chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Reykjavik (KEF) – chosen by Cheapflights users on 52% of one-stop itineraries from London to Chicago on Cheapflights.

What’s the cheapest stopover airport for flights from London to Chicago?

Average return fare for one-stop flights from London to Chicago, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Reykjavik (KEF) is the most affordable one-stop option, with an average return flight price of £362.

What’s the fastest stopover option from London to Chicago?

Shortest average travel time for one-stop one-way flights from London to Chicago, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 10h 57m.

Which airport typically offers the quickest stopover for flights from London to Chicago?

Average stopover duration for one-stop one-way flights from London to Chicago, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Helsinki (HEL) offer the fastest connection on this route, with an average stopover time of 1h 15m.

How often are flights from London to Chicago delayed?

About 11% of weekly flights between London and Chicago have experienced delays in the past year, with the average delay time being 172 minutes.

What is the most punctual flight time for London 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?

Saturday 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 London 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 9 1月 2026.
Read reviews from past customers who have flown with Finnair, United Airlines, andIcelandair from London 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.

Crew

8.2

Overall

7.6

Food

6.7

Boarding

7.7

Entertainment

6.9

Comfort

7.4

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.

Crew

8.2

Overall

7.6

Food

6.7

Boarding

7.7

Entertainment

6.9

Comfort

7.4

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.

Crew

8.2

Overall

7.6

Food

6.7

Boarding

7.7

Entertainment

6.9

Comfort

7.4

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.

Crew

8.2

Overall

7.6

Food

6.7

Boarding

7.7

Entertainment

6.9

Comfort

7.4

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.

Crew

8.2

Overall

7.6

Food

6.7

Boarding

7.7

Entertainment

6.9

Comfort

7.4

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.

Crew

8.2

Overall

7.6

Food

6.7

Boarding

7.7

Entertainment

6.9

Comfort

7.4

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 London 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 London to Chicago?

    A quick flight from London to Chicago can take about 12h 25m. British Airways provides one of the quickest options available for as low as £401. Airlines will cover a distance of 3939 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines flying from London to Chicago round-trip?

    Our cheapest airline available from London to Chicago is Icelandair. Our recent data shows that you can find tickets from as low as £313 on this airline. Additional options worth looking into are Virgin Atlantic and Scandinavian Airlines, starting at £344 and £354 round-trip. These flights start at 38% lower than the current average price 3 months from now.

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

    To fly one-way, consider booking your trip with Scandinavian Airlines, which is currently one of the cheapest options available, starting at £263. Icelandair flights start at £285 while deals on JetBlue start at £310 one-way.

  • What are the most popular routes from London to Chicago?

  • What are the most reliable airlines from London to Chicago?

    Before booking your flight to Chicago from London, check out the most reliable airlines to get you to your destination on time: SWISS (88%), Austrian Airlines (87%), Brussels Airlines( 87%).

  • What are the cheapest flights from London to Chicago?

    While on average a flight from London to Chicago is generally £1,078, our data shows the cheapest flight currently is £353. When looking at the most popular route, (London Heathrow - Chicago O'Hare Intl), you can expect to pay £338 for that flight.

  • Where are the most common stopover locations when flying from London to Chicago?

  • What are some popular things to do or see while on a stopover in Reykjavik?

    If you're on a stopover in Reykjavik and looking for things to do, consider visiting Harpa, National Cathedral, or Reykjavik Free Church. Harpa, National Cathedral, and Reykjavik Free Church are located about 23.3 mi, 23.0 mi, and 22.9 mi, respectively from Reykjavik Keflavik Intl. Those on a stopover in Reykjavik in need of a car hire can book one at Reykjavik Keflavik Intl for about £36.

  • What are some popular points of interest to see during a stopover in Dublin?

    The majority of Dublin visitors spend their time at 3Olympia Theatre, Bord Gáis Energy Theatre, and Dublin Castle. 3Olympia Theatre, Bord Gáis Energy Theatre and Dublin Castle are located about 5.7 mi, 5.7 mi, and 5.8 mi, respectively from Dublin if you are interested in checking them out. Travellers in need of a car in Dublin can hire one for about £24 per day.

  • Where are the least popular stopover locations for London to Chicago flights?

  • Can I find deals for flights from London to Chicago that include hotel bookings?

    Yes. In addition to deals on London to Chicago flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Chicago?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Chicago.

  • Can I find deals for business class flights from London to Chicago?

    Yes. Cheapflights offers flight deals from London 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 London to Chicago?

    Currently, December is the cheapest month in which you can book a flight from London to Chicago (average of £218). Flying from London to Chicago in July is currently the most expensive (average of £501). 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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Fly from London to Chicago on these airlines

Choose from the following airlines for your flight from London to Chicago. Flights are based on user searches made on Cheapflights and were last updated on 9 1月 2026.

Top 10 airlines flying from London to Chicago

Discover the top 10 airlines that operate flights from London 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 9 1月 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£313Average£487FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Virgin AtlanticCheapest£344Average£530FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Scandinavian AirlinesCheapest£355Average£491FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Aer LingusCheapest£365Average£626FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
TAP AIR PORTUGALCheapest£385Average£610FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Brussels AirlinesCheapest£385Average£539FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
LufthansaCheapest£393Average£574FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Austrian AirlinesCheapest£402Average£611FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
British AirwaysCheapest£402Average£570FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£408Average£550FlexibilityNo 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 London to Chicago?

Cheapflights helps you search for flights from London to Chicago via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Chicago from London.

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

Need flexible booking options for your flight to Chicago from London? 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 London to Chicago become cheaper?

Not ready to book yet? You can track prices for flights from London to Chicago on Cheapflights with our Price Alert feature and get notified when better prices are available.

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