What is the cheapest airline that flies from London to Chicago?

Virgin Atlantic, Delta, and British Airways are the most popular carriers operating from London to Chicago

How many flights depart from London to Chicago on average per week?

As of September 2025, 333 flights take off from London and land in Chicago each week. The most common flight departure day for this route is Tue, with 16% of weekly flights taking off on this day.

How many flights depart from London to Chicago on average per day?

47 flights are operational daily from London to Chicago as of September 2025. The most popular departure time for this route is 14:00, with 51% of flights per day taking off in the afternoon.

When did momondo last update prices for flights from London to Chicago?

Prices for flights from London to Chicago were last updated today.

How old do you have to be to fly from London to Chicago?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Chicago.

What documentation or ID do you need to fly to Chicago?

The necessary travel and health documents for your Chicago trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

€382 Cheap Flights from London to Chicago in 2025/26

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Find the cheapest flights from London to Chicago

Round-trip

One-way

Last minute

Direct

Cheap return flights

06:40 - 16:45LHR-ORD

16h 05m1 stop

19:20 - 16:25ORD-LHR

39h 05m2 stops

€458Scandinavian Airlines

Find Deal

Mon, 8 Dec - Fri, 9 Jan

07:45 - 16:35LHR-ORD

14h 50m2 stops

18:00 - 08:20ORD-LHR

8h 20mdirect

€459United Airlines

Find Deal

Wed, 1 Oct - Wed, 22 Oct

12:15 - 17:20LHR-ORD

11h 05m1 stop

18:30 - 10:50ORD-LHR

10h 20m1 stop

€460Icelandair

Find Deal

Sun, 14 Dec - Wed, 14 Jan

06:40 - 16:45LHR-ORD

16h 05m2 stops

19:20 - 16:25ORD-LHR

15h 05m2 stops

€461Scandinavian Airlines

Find Deal

Sun, 16 Nov - Sat, 29 Nov

20:35 - 17:20LHR-ORD

26h 45m1 stop

18:30 - 10:50ORD-LHR

10h 20m1 stop

€462Icelandair

Find Deal

Sat, 13 Dec - Wed, 7 Jan

06:30 - 15:00LHR-ORD

14h 30m2 stops

10:30 - 08:55ORD-LHR

16h 25m1 stop

€488Delta

Find Deal

Thu, 9 Oct - Sun, 12 Oct

14:10 - 17:00LHR-ORD

8h 50mdirect

17:04 - 09:30ORD-LHR

10h 26m1 stop

€488British Airways

Find Deal

Sat, 6 Dec - Sun, 7 Dec

11:15 - 20:38LHR-ORD

15h 23m2 stops

14:10 - 06:50ORD-LHR

10h 40m1 stop

€494Delta

Find Deal

Sat, 7 Feb - Sat, 21 Feb

12:35 - 15:25LHR-ORD

8h 50mdirect

21:45 - 10:25ORD-LHR

7h 40mdirect

€499British Airways

Find Deal

Fri, 27 Feb - Wed, 11 Mar

07:40 - 14:10LHR-ORD

12h 30m1 stop

15:45 - 05:55ORD-LHR

8h 10mdirect

€501

Find Deal

Wed, 10 Dec - Thu, 8 Jan

British Airways flights from London to Chicago

Our best British Airways deals on London to Chicago flight tickets

British Airways

21 Sept

LHR09:15London Heathrow

8h 35m

ORD11:50Chicago O'Hare Intl

4 Oct

ORD17:40Chicago O'Hare Intl

7h 40m

LHR07:20London Heathrow

€476

Find similar

British Airways

24 Sept

LHR09:50London Heathrow

11h 55m

1 stop

ORD15:45Chicago O'Hare Intl

1 Oct

ORD22:15Chicago O'Hare Intl

10h 40m

1 stop

LHR14:55London Heathrow

€483

Find similar

British Airways

6 Dec

LHR14:10London Heathrow

8h 50m

ORD17:00Chicago O'Hare Intl

7 Dec

ORD17:04Chicago O'Hare Intl

10h 26m

1 stop

LHR09:30London Heathrow

€488

Find similar

Scandinavian Airlines flights from London to Chicago

Our best Scandinavian Airlines deals on London to Chicago flight tickets

Scandinavian Airlines

8 Dec

LHR06:40London Heathrow

16h 05m

1 stop

ORD16:45Chicago O'Hare Intl

9 Jan

ORD19:20Chicago O'Hare Intl

39h 05m

2 stops

LHR16:25London Heathrow

€458

Find similar

Scandinavian Airlines

16 Nov

LHR06:40London Heathrow

16h 05m

2 stops

ORD16:45Chicago O'Hare Intl

29 Nov

ORD19:20Chicago O'Hare Intl

15h 05m

2 stops

LHR16:25London Heathrow

€461

Find similar

Scandinavian Airlines

30 Oct

LHR10:20London Heathrow

13h 25m

1 stop

ORD18:45Chicago O'Hare Intl

2 Nov

ORD19:20Chicago O'Hare Intl

17h 30m

2 stops

LHR18:50London Heathrow

€465

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 8/12

06:40-16:45

1 stop16h 05m

Chicago O'Hare Intl

Fri 9/1

19:20-16:25

2 stops39h 05m

€458

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 1/10

07:45-16:35

2 stops14h 50m

Chicago O'Hare Intl

Wed 22/10

18:00-08:20

Nonstop8h 20m

€459

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 14/12

12:15-17:20

1 stop11h 05m

Chicago O'Hare Intl

Wed 14/1

18:30-10:50

1 stop10h 20m

€460

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 16/11

06:40-16:45

2 stops16h 05m

Chicago O'Hare Intl

Sat 29/11

19:20-16:25

2 stops15h 05m

€461

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 13/12

20:35-17:20

1 stop26h 45m

Chicago O'Hare Intl

Wed 7/1

18:30-10:50

1 stop10h 20m

€462

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 9/10

06:30-15:00

2 stops14h 30m

Chicago O'Hare Intl

Sun 12/10

10:30-08:55

1 stop16h 25m

€488

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 6/12

14:10-17:00

Nonstop8h 50m

Chicago O'Hare Intl

Sun 7/12

17:04-09:30

1 stop10h 26m

€488

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 7/2

11:15-20:38

2 stops15h 23m

Chicago O'Hare Intl

Sat 21/2

14:10-06:50

1 stop10h 40m

€494

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 27/2

12:35-15:25

Nonstop8h 50m

Chicago O'Hare Intl

Wed 11/3

21:45-10:25

Nonstop7h 40m

€499

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 10/12

07:40-14:10

1 stop12h 30m

Chicago O'Hare Intl

Thu 8/1

15:45-05:55

Nonstop8h 10m

€501

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London to Chicago

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Chicago?

The cheapest month to fly to Chicago from London is in February. Flight prices, which tend to average around €493, are often lower during this time because this is during the off-season. If you don’t want to visit Chicago in February, then you should wait until September to fly from London, when ticket prices are also cheap, with an average price of €505.

What is the cheapest day to depart on your flight to Chicago?

On average, the least expensive day to fly to Chicago from London is on a Thursday. momondo users have found tickets for Thursday departures for as low as €569. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to Chicago on Tuesday is €3,185.

What is the cheapest London to Chicago flight route?

Fly from London Heathrow to Chicago O'Hare Intl for the best London - Chicago flight prices

How far in advance should I book a flight to Chicago?

You are more likely to see cheaper flights to Chicago from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around €616 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from London for as low as €590 on momondo.

What cabin class options are available on London to Chicago flights?

There are 2 cabin classes available to choose from on London to Chicago flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have London to Chicago flight prices changed over time?

As of September 2025, prices for London to Chicago flights are approximately 34% more expensive when compared to flights at the same time last year.

When to book flights from London to Chicago

Are you open to changing your travel dates? Check out the ideal times to fly from London to Chicago according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap London to Chicago (LON to CHI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Chicago

Fastest flight time	8h 25m
Direct flights	Every day
Airports in Chicago	1 airport

The fastest flight from London to Chicago takes 8h 25m

Direct flights go from London to Chicago every day.

There is 1 airport near Chicago: Chicago O'Hare Intl (ORD)

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How far is London to Chicago by plane?
A flight from London to Chicago will travel around 6349.2 km. By plane, this route typically takes 8h 50m.
When did momondo last update prices for flights from London to Chicago?
Prices for flights from London to Chicago were last updated today.
How old do you have to be to fly from London to Chicago?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Chicago.
What documentation or ID do you need to fly to Chicago?
The necessary travel and health documents for your Chicago trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London to Chicago?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from London to Chicago is Boeing 767-300 (44.77% of total bookings). The next most popular plane models are Boeing 777 (13.01%), Boeing 787-10 Dreamliner (12.41%), and Boeing 787-9 Dreamliner (6.91%).

Why use momondo?

Why should I use momondo to find a flight deal from London to Chicago?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Chicago for you.

Can I find flights from London to Chicago with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for London to Chicago flights to just show those with flexible booking policies.

How can momondo help me find flights from London to Chicago?

momondo provides multiple filters to help you find the best flight to Chicago from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from London to Chicago right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of London to Chicago flights. All you need is a valid email address and we will do the rest; it is that quick and easy.