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Cheap flights from London Heathrow Airport to Chicago from €486

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Chicago departing on 7/10. 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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Find the cheapest flights from London Heathrow Airport to Chicago (LHR-CHI)

Cheap return flights

Delta Logo
08:40 - 14:10LHR-ORD
11h 30m1 stop
Delta Logo
18:50 - 11:25ORD-LHR
10h 35m1 stop
€486Delta
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Tue, 7 Oct - Fri, 19 Dec
Delta Logo
06:30 - 16:11LHR-ORD
15h 41m2 stops
Delta Logo
20:38 - 13:10ORD-LHR
10h 32m1 stop
€487Delta
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Mon, 6 Oct - Mon, 13 Oct
Austrian Airlines Logo
11:05 - 14:10LHR-ORD
9h 05mdirect
Austrian Airlines Logo
16:20 - 21:40ORD-LHR
23h 20m1 stop
€488Austrian Airlines
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Mon, 15 Sep - Thu, 2 Oct
British Airways Logo
14:25 - 17:00LHR-ORD
8h 35mdirect
British Airways Logo
13:43 - 06:20ORD-LHR
10h 37m1 stop
€490British Airways
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Fri, 26 Sep - Wed, 8 Oct
SWISS Logo
17:10 - 16:20LHR-ORD
29h 10m1 stop
SWISS Logo
18:50 - 16:40ORD-LHR
15h 50m2 stops
€491SWISS
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Sun, 30 Nov - Sat, 6 Dec
United Airlines Logo
09:30 - 20:22LHR-ORD
16h 52m1 stop
United Airlines Logo
10:40 - 09:35ORD-LHR
16h 55m1 stop
€492United Airlines
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Thu, 9 Oct - Mon, 13 Oct
British Airways Logo
10:05 - 17:28LHR-ORD
13h 23m1 stop
British Airways Logo
22:35 - 12:15ORD-LHR
7h 40mdirect
€494British Airways
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Sat, 27 Sep - Tue, 7 Oct
United Airlines Logo
08:40 - 15:55LHR-ORD
13h 15m1 stop
United Airlines Logo
15:45 - 05:55ORD-LHR
8h 10mdirect
€501United Airlines
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Fri, 24 Oct - Thu, 20 Nov
SWISS Logo
07:00 - 15:55LHR-ORD
14h 55m2 stops
SWISS Logo
19:05 - 16:35ORD-LHR
15h 30m2 stops
€509SWISS
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Wed, 17 Sep - Thu, 16 Oct
Austrian Airlines Logo
08:30 - 11:30LHR-ORD
9h 00mdirect
Austrian Airlines Logo
16:00 - 06:20ORD-LHR
8h 20mdirect
€529Austrian Airlines
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Sun, 12 Oct - Sun, 19 Oct

Delta flights from London Heathrow Airport to Chicago

Our best Delta deals on London Heathrow Airport to Chicago flight tickets
Delta
7 Oct
LHR08:40London Heathrow
11h 30m
1 stop
ORD14:10Chicago O'Hare Intl
19 Dec
ORD18:50Chicago O'Hare Intl
10h 35m
1 stop
LHR11:25London Heathrow
€486
Find similar
Delta
6 Oct
LHR06:30London Heathrow
15h 41m
2 stops
ORD16:11Chicago O'Hare Intl
13 Oct
ORD20:38Chicago O'Hare Intl
10h 32m
1 stop
LHR13:10London Heathrow
€487
Find similar
Delta
10 Sept
LHR06:30London Heathrow
15h 43m
2 stops
ORD16:13Chicago O'Hare Intl
18 Sept
ORD18:28Chicago O'Hare Intl
10h 57m
1 stop
LHR11:25London Heathrow
€489
Find similar

Austrian Airlines flights from London Heathrow Airport to Chicago

Our best Austrian Airlines deals on London Heathrow Airport to Chicago flight tickets
Austrian Airlines
15 Sept
LHR11:05London Heathrow
9h 05m
ORD14:10Chicago O'Hare Intl
2 Oct
ORD16:20Chicago O'Hare Intl
23h 20m
1 stop
LHR21:40London Heathrow
€488
Find similar
Austrian Airlines
12 Oct
LHR08:30London Heathrow
9h 00m
ORD11:30Chicago O'Hare Intl
19 Oct
ORD16:00Chicago O'Hare Intl
8h 20m
LHR06:20London Heathrow
€529
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport 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 30 August 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 7/10

08:40-14:10

1 stop11h 30m

Chicago O'Hare Intl

Fri 19/12

18:50-11:25

1 stop10h 35m

€486

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 6/10

06:30-16:11

2 stops15h 41m

Chicago O'Hare Intl

Mon 13/10

20:38-13:10

1 stop10h 32m

€487

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 15/9

11:05-14:10

Nonstop9h 05m

Chicago O'Hare Intl

Thu 2/10

16:20-21:40

1 stop23h 20m

€488

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 26/9

14:25-17:00

Nonstop8h 35m

Chicago O'Hare Intl

Wed 8/10

13:43-06:20

1 stop10h 37m

€490

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 30/11

17:10-16:20

1 stop29h 10m

Chicago O'Hare Intl

Sat 6/12

18:50-16:40

2 stops15h 50m

€491

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 9/10

09:30-20:22

1 stop16h 52m

Chicago O'Hare Intl

Mon 13/10

10:40-09:35

1 stop16h 55m

€492

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 27/9

10:05-17:28

1 stop13h 23m

Chicago O'Hare Intl

Tue 7/10

22:35-12:15

Nonstop7h 40m

€494

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 24/10

08:40-15:55

1 stop13h 15m

Chicago O'Hare Intl

Thu 20/11

15:45-05:55

Nonstop8h 10m

€501

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 17/9

07:00-15:55

2 stops14h 55m

Chicago O'Hare Intl

Thu 16/10

19:05-16:35

2 stops15h 30m

€509

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 12/10

08:30-11:30

Nonstop9h 00m

Chicago O'Hare Intl

Sun 19/10

16:00-06:20

Nonstop8h 20m

€529

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 Heathrow Airport 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 Heathrow Airport is in February. Flight prices, which tend to average around €512, 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 March to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of €519.

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

On average, the least expensive day to fly to Chicago from London Heathrow Airport is on a Thursday. momondo users have found tickets for Thursday departures for as low as €573. 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 €3,204.

What is the cheapest London Heathrow to Chicago flight route?

Fly from London Heathrow to Chicago O'Hare Intl for the best London Heathrow - 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 Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around €626 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 Heathrow Airport for as low as €599 on momondo.

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

There are 2 cabin classes available to choose from on London Heathrow 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 Heathrow Airport to Chicago flight prices changed over time?

As of August 2025, prices for London Heathrow Airport to Chicago flights are approximately 37% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Chicago

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

Cheap London Heathrow Airport to Chicago (LHR to CHI) flight deals and tips

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

Fastest flight time

8h 25m

Direct flights

Every day

Airports in Chicago

1 airport
The fastest flight from London Heathrow Airport to Chicago takes 8h 25m
Direct flights go from London Heathrow Airport to Chicago every day.
There is 1 airport near Chicago: Chicago O'Hare Intl (ORD)
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  • How far is London Heathrow to Chicago by plane?

    A flight from London Heathrow to Chicago will travel around 6330.3 km. 8h 35m is a normal flight duration for this route.

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport 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 Heathrow Airport to Chicago?

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to Chicago. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to Chicago from London which offer a flexible booking policy as well as other useful filters and features.

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?

If you are not ready to book a flight from London to Chicago now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Chicago and let you know when they change.

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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
Chicago Midway Airport
Chicago O'Hare Intl Airport