Cheap flights from London to Chicago from €458

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from London to Chicago departing on 8/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

Scandinavian Airlines Logo
06:40 - 16:45LHR-ORD
16h 05m1 stop
Scandinavian Airlines Logo
19:20 - 16:25ORD-LHR
39h 05m2 stops
€458Scandinavian Airlines
Find Deal
Mon, 8 Dec - Fri, 9 Jan
United Airlines Logo
07:45 - 16:35LHR-ORD
14h 50m2 stops
United Airlines Logo
18:00 - 08:20ORD-LHR
8h 20mdirect
€459United Airlines
Find Deal
Wed, 1 Oct - Wed, 22 Oct
Icelandair Logo
12:15 - 17:20LHR-ORD
11h 05m1 stop
Icelandair Logo
18:30 - 10:50ORD-LHR
10h 20m1 stop
€460Icelandair
Find Deal
Sun, 14 Dec - Wed, 14 Jan
Scandinavian Airlines Logo
06:40 - 16:45LHR-ORD
16h 05m2 stops
Scandinavian Airlines Logo
19:20 - 16:25ORD-LHR
15h 05m2 stops
€461Scandinavian Airlines
Find Deal
Sun, 16 Nov - Sat, 29 Nov
Icelandair Logo
20:35 - 17:20LHR-ORD
26h 45m1 stop
Icelandair Logo
18:30 - 10:50ORD-LHR
10h 20m1 stop
€462Icelandair
Find Deal
Sat, 13 Dec - Wed, 7 Jan
Delta Logo
06:30 - 15:00LHR-ORD
14h 30m2 stops
Delta Logo
10:30 - 08:55ORD-LHR
16h 25m1 stop
€488Delta
Find Deal
Thu, 9 Oct - Sun, 12 Oct
British Airways Logo
14:10 - 17:00LHR-ORD
8h 50mdirect
British Airways Logo
17:04 - 09:30ORD-LHR
10h 26m1 stop
€488British Airways
Find Deal
Sat, 6 Dec - Sun, 7 Dec
Delta Logo
11:15 - 20:38LHR-ORD
15h 23m2 stops
Delta Logo
14:10 - 06:50ORD-LHR
10h 40m1 stop
€494Delta
Find Deal
Sat, 7 Feb - Sat, 21 Feb
British Airways Logo
12:35 - 15:25LHR-ORD
8h 50mdirect
British Airways Logo
21:45 - 10:25ORD-LHR
7h 40mdirect
€499British Airways
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Fri, 27 Feb - Wed, 11 Mar
 Logo
07:40 - 14:10LHR-ORD
12h 30m1 stop
 Logo
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
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
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

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
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
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

momondo 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, momondo users made 13,528 searches. Data last updated 16 September 2025.
Use the filters below to find and compare flights from London to Chicago that are best for you.

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
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See travel insights to Chicago from

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

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)
  • 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?

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.

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1 adult
Thu 16/10
Thu 23/10

Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Airports listed have a maximum distance of 25.6 km from Chicago