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Cheap flights from London Heathrow Airport to Chicago from €456

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 17/11. 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

Cheap return flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
10:20 - 16:45LHR-ORD
12h 25m1 stop
Scandinavian Airlines Logo
19:20 - 16:00ORD-LHR
14h 40m1 stop
€456Scandinavian Airlines
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Mon, 17 Nov - Mon, 1 Dec
Scandinavian Airlines Logo
10:20 - 16:45LHR-ORD
12h 25m1 stop
Scandinavian Airlines Logo
19:20 - 16:00ORD-LHR
14h 40m1 stop
€457Scandinavian Airlines
Find Deal
Mon, 3 Nov - Fri, 7 Nov
Scandinavian Airlines Logo
19:50 - 16:45LHR-ORD
26h 55m2 stops
Scandinavian Airlines Logo
19:10 - 18:50ORD-LHR
17h 40m2 stops
€468Scandinavian Airlines
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Fri, 16 Jan - Sun, 18 Jan
Scandinavian Airlines Logo
07:05 - 16:45LHR-ORD
15h 40m2 stops
Scandinavian Airlines Logo
19:20 - 18:50ORD-LHR
17h 30m2 stops
€469Scandinavian Airlines
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Fri, 7 Nov - Mon, 10 Nov
Scandinavian Airlines Logo
07:05 - 16:45LHR-ORD
15h 40m2 stops
Scandinavian Airlines Logo
19:20 - 16:00ORD-LHR
14h 40m1 stop
€469Scandinavian Airlines
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Mon, 17 Nov - Mon, 1 Dec
United Airlines Logo
18:00 - 09:13LHR-ORD
21h 13m1 stop
United Airlines Logo
15:45 - 05:55ORD-LHR
8h 10mdirect
€509United Airlines
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Sat, 6 Dec - Sun, 7 Dec
United Airlines Logo
18:00 - 07:55LHR-ORD
19h 55m1 stop
United Airlines Logo
15:45 - 05:55ORD-LHR
8h 10mdirect
€516United Airlines
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Sat, 7 Feb - Sun, 8 Feb
Icelandair Logo
12:15 - 17:20LHR-ORD
11h 05m1 stop
Icelandair Logo
18:30 - 10:50ORD-LHR
10h 20m1 stop
€517Icelandair
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Mon, 12 Jan - Wed, 28 Jan
Multiple Airlines Logo
06:00 - 12:45LHR-ORD
12h 45m1 stop
Multiple Airlines Logo
21:05 - 11:15ORD-LHR
8h 10mdirect
€527Multiple Airlines
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Mon, 17 Nov - Mon, 1 Dec
Icelandair Logo
21:25 - 18:15LHR-ORD
26h 50m1 stop
Icelandair Logo
19:25 - 11:55ORD-LHR
10h 30m1 stop
€532Icelandair
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Mon, 6 Apr - Wed, 15 Apr

Scandinavian Airlines flights from London Heathrow Airport to Chicago

Our best Scandinavian Airlines deals on London Heathrow Airport to Chicago flight tickets
Scandinavian Airlines
17 Nov
LHR10:20London Heathrow
12h 25m
1 stop
ORD16:45Chicago O'Hare Intl
1 Dec
ORD19:20Chicago O'Hare Intl
14h 40m
1 stop
LHR16:00London Heathrow
€456
Find similar
Scandinavian Airlines
3 Nov
LHR10:20London Heathrow
12h 25m
1 stop
ORD16:45Chicago O'Hare Intl
7 Nov
ORD19:20Chicago O'Hare Intl
14h 40m
1 stop
LHR16:00London Heathrow
€457
Find similar
Scandinavian Airlines
16 Jan
LHR19:50London Heathrow
26h 55m
2 stops
ORD16:45Chicago O'Hare Intl
18 Jan
ORD19:10Chicago O'Hare Intl
17h 40m
2 stops
LHR18:50London Heathrow
€468
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United Airlines flights from London Heathrow Airport to Chicago

Our best United Airlines deals on London Heathrow Airport to Chicago flight tickets
United Airlines
6 Dec
LHR18:00London Heathrow
21h 13m
1 stop
ORD09:13Chicago O'Hare Intl
7 Dec
ORD15:45Chicago O'Hare Intl
8h 10m
LHR05:55London Heathrow
€509
Find similar
United Airlines
7 Feb
LHR18:00London Heathrow
19h 55m
1 stop
ORD07:55Chicago O'Hare Intl
8 Feb
ORD15:45Chicago O'Hare Intl
8h 10m
LHR05:55London Heathrow
€516
Find similar
United Airlines
25 Nov
LHR09:00London Heathrow
13h 20m
1 stop
ORD16:20Chicago O'Hare Intl
2 Dec
ORD17:50Chicago O'Hare Intl
8h 05m
LHR07:55London Heathrow
€530
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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 19 October 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

Mon 17/11

10:20-16:45

1 stop12h 25m

Chicago O'Hare Intl

Mon 1/12

19:20-16:00

1 stop14h 40m

€456

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 3/11

10:20-16:45

1 stop12h 25m

Chicago O'Hare Intl

Fri 7/11

19:20-16:00

1 stop14h 40m

€457

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 16/1

19:50-16:45

2 stops26h 55m

Chicago O'Hare Intl

Sun 18/1

19:10-18:50

2 stops17h 40m

€468

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 7/11

07:05-16:45

2 stops15h 40m

Chicago O'Hare Intl

Mon 10/11

19:20-18:50

2 stops17h 30m

€469

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 17/11

07:05-16:45

2 stops15h 40m

Chicago O'Hare Intl

Mon 1/12

19:20-16:00

1 stop14h 40m

€469

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 6/12

18:00-09:13

1 stop21h 13m

Chicago O'Hare Intl

Sun 7/12

15:45-05:55

Nonstop8h 10m

€509

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 7/2

18:00-07:55

1 stop19h 55m

Chicago O'Hare Intl

Sun 8/2

15:45-05:55

Nonstop8h 10m

€516

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 12/1

12:15-17:20

1 stop11h 05m

Chicago O'Hare Intl

Wed 28/1

18:30-10:50

1 stop10h 20m

€517

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 17/11

06:00-12:45

1 stop12h 45m

Chicago O'Hare Intl

Mon 1/12

21:05-11:15

Nonstop8h 10m

€527

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 6/4

21:25-18:15

1 stop26h 50m

Chicago O'Hare Intl

Wed 15/4

19:25-11:55

1 stop10h 30m

€532

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 €508, 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 Heathrow Airport, when ticket prices are also cheap, with an average price of €515.

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 €666. 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 €3,212.

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 €627 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 €595 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 October 2025, prices for London Heathrow Airport to Chicago flights are approximately 5% cheaper 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 50m

Direct flights

Every day

Airports in Chicago

1 airport
The fastest flight from London Heathrow Airport to Chicago takes 8h 50m
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. 11h 05m 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