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Cheap flights from London Heathrow Airport to Chicago from $811

This is the cheapest one-way 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 8/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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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
06:40 - 16:45LHR-ORD
16h 05m1 stop
Scandinavian Airlines Logo
19:20 - 16:00ORD-LHR
14h 40m1 stop
$817Scandinavian Airlines
Find Deal
Fri, 12 Dec - Wed, 7 Jan
Scandinavian Airlines Logo
15:35 - 16:55LHR-ORD
31h 20m2 stops
Scandinavian Airlines Logo
19:20 - 16:25ORD-LHR
15h 05m2 stops
$820Scandinavian Airlines
Find Deal
Sat, 7 Feb - Sat, 14 Feb
Scandinavian Airlines Logo
21:05 - 16:45LHR-ORD
25h 40m2 stops
Scandinavian Airlines Logo
19:20 - 18:30ORD-LHR
17h 10m1 stop
$822Scandinavian Airlines
Find Deal
Thu, 13 Nov - Mon, 17 Nov
Scandinavian Airlines Logo
19:50 - 16:45LHR-ORD
26h 55m2 stops
Scandinavian Airlines Logo
19:20 - 16:00ORD-LHR
14h 40m1 stop
$823Scandinavian Airlines
Find Deal
Fri, 12 Dec - Wed, 7 Jan
United Airlines Logo
12:05 - 16:20LHR-ORD
34h 15m1 stop
United Airlines Logo
15:55 - 06:30ORD-LHR
32h 35m1 stop
$872United Airlines
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Thu, 22 Jan - Sat, 24 Jan
United Airlines Logo
12:05 - 16:20LHR-ORD
34h 15m1 stop
United Airlines Logo
15:55 - 06:30ORD-LHR
32h 35m1 stop
$882United Airlines
Find Deal
Thu, 13 Nov - Sat, 15 Nov
United Airlines Logo
09:00 - 16:20LHR-ORD
13h 20m1 stop
United Airlines Logo
18:28 - 08:30ORD-LHR
32h 02m1 stop
$885United Airlines
Find Deal
Sat, 22 Nov - Sat, 22 Nov
Icelandair Logo
20:35 - 17:20LHR-ORD
26h 45m1 stop
Icelandair Logo
18:30 - 10:50ORD-LHR
10h 20m1 stop
$904Icelandair
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Sun, 14 Dec - Wed, 28 Jan
Icelandair Logo
20:35 - 17:20LHR-ORD
26h 45m1 stop
Icelandair Logo
18:30 - 10:50ORD-LHR
10h 20m1 stop
$953Icelandair
Find Deal
Sat, 13 Dec - Thu, 29 Jan
Icelandair Logo
20:35 - 17:20LHR-ORD
26h 45m1 stop
Icelandair Logo
18:30 - 10:50ORD-LHR
10h 20m1 stop
$969Icelandair
Find Deal
Tue, 16 Dec - Wed, 31 Dec

Scandinavian Airlines flights from London Heathrow Airport to Chicago

Our best Scandinavian Airlines deals on London Heathrow Airport to Chicago flight tickets
Scandinavian Airlines
12 Dec
LHR06:40London Heathrow
16h 05m
1 stop
ORD16:45Chicago O'Hare Intl
7 Jan
ORD19:20Chicago O'Hare Intl
14h 40m
1 stop
LHR16:00London Heathrow
$817
Find similar
Scandinavian Airlines
7 Feb
LHR15:35London Heathrow
31h 20m
2 stops
ORD16:55Chicago O'Hare Intl
14 Feb
ORD19:20Chicago O'Hare Intl
15h 05m
2 stops
LHR16:25London Heathrow
$820
Find similar
Scandinavian Airlines
13 Nov
LHR21:05London Heathrow
25h 40m
2 stops
ORD16:45Chicago O'Hare Intl
17 Nov
ORD19:20Chicago O'Hare Intl
17h 10m
1 stop
LHR18:30London Heathrow
$822
Find similar

United Airlines flights from London Heathrow Airport to Chicago

Our best United Airlines deals on London Heathrow Airport to Chicago flight tickets
United Airlines
22 Jan
LHR12:05London Heathrow
34h 15m
1 stop
ORD16:20Chicago O'Hare Intl
24 Jan
ORD15:55Chicago O'Hare Intl
32h 35m
1 stop
LHR06:30London Heathrow
$872
Find similar
United Airlines
13 Nov
LHR12:05London Heathrow
34h 15m
1 stop
ORD16:20Chicago O'Hare Intl
15 Nov
ORD15:55Chicago O'Hare Intl
32h 35m
1 stop
LHR06:30London Heathrow
$882
Find similar
United Airlines
22 Nov
LHR09:00London Heathrow
13h 20m
1 stop
ORD16:20Chicago O'Hare Intl
22 Nov
ORD18:28Chicago O'Hare Intl
32h 02m
1 stop
LHR08:30London Heathrow
$885
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 78,305 searches. Data last updated 1 November 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

Fri 12/12

06:40-16:45

1 stop16h 05m

Chicago O'Hare Intl

Wed 7/1

19:20-16:00

1 stop14h 40m

$817

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 7/2

15:35-16:55

2 stops31h 20m

Chicago O'Hare Intl

Sat 14/2

19:20-16:25

2 stops15h 05m

$820

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 13/11

21:05-16:45

2 stops25h 40m

Chicago O'Hare Intl

Mon 17/11

19:20-18:30

1 stop17h 10m

$822

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 12/12

19:50-16:45

2 stops26h 55m

Chicago O'Hare Intl

Wed 7/1

19:20-16:00

1 stop14h 40m

$823

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 22/1

12:05-16:20

1 stop34h 15m

Chicago O'Hare Intl

Sat 24/1

15:55-06:30

1 stop32h 35m

$872

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 13/11

12:05-16:20

1 stop34h 15m

Chicago O'Hare Intl

Sat 15/11

15:55-06:30

1 stop32h 35m

$882

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 22/11

09:00-16:20

1 stop13h 20m

Chicago O'Hare Intl

Sat 22/11

18:28-08:30

1 stop32h 02m

$885

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 14/12

20:35-17:20

1 stop26h 45m

Chicago O'Hare Intl

Wed 28/1

18:30-10:50

1 stop10h 20m

$904

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 13/12

20:35-17:20

1 stop26h 45m

Chicago O'Hare Intl

Thu 29/1

18:30-10:50

1 stop10h 20m

$953

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 16/12

20:35-17:20

1 stop26h 45m

Chicago O'Hare Intl

Wed 31/12

18:30-10:50

1 stop10h 20m

$969

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?

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 $917.

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

Our data shows that Friday is the least expensive day to fly to Chicago. Tickets to fly out on this day can be as low as $902. Flights from London Heathrow Airport to Chicago on a Saturday will generally be more expensive and average around $2,678. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our data shows that the cheapest London Heathrow Airport to Chicago flights are usually those with departure times in the morning. Our users have found flights to Chicago in the morning for as low as $1,202. Flights at midday are often more expensive, with an average ticket price of $1,226.

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 $1,118 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 $1,059 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.

Can stopping save me money on London Heathrow Airport to Chicago flights?

You could potentially save up to 39% on your flight if you consider stops on a London Heathrow Airport to Chicago flight.

How have London Heathrow Airport to Chicago flight prices changed over time?

As of November 2025, prices for London Heathrow Airport to Chicago flights are approximately 1% 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 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. Flights usually cover this in 9h 25m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from London Heathrow Airport to Chicago are updated daily.

  • 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 required travel and health documents for your Chicago trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Chicago. We recommend that you seek guidance from your airline or a reliable 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?

All flight searches from London to Chicago on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Chicago.

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

Price alerts on flights to Chicago from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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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