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Cheap flights from London Heathrow Airport to Chicago from $874

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 17/2. 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

Lufthansa Logo
07:40 - 14:10LHR-ORD
12h 30m1 stop
Lufthansa Logo
16:45 - 05:55ORD-LHR
8h 10mdirect
$874Lufthansa
Find Deal
Tue, 17 Feb - Fri, 27 Mar
United Airlines Logo
09:05 - 13:20LHR-ORD
34h 15m1 stop
United Airlines Logo
21:25 - 11:45ORD-LHR
8h 20mdirect
$877United Airlines
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Sat, 13 Sep - Sun, 5 Oct
Logo
07:40 - 14:10LHR-ORD
12h 30m1 stop
Logo
15:45 - 05:55ORD-LHR
8h 10mdirect
$878
Find Deal
Wed, 26 Nov - Thu, 15 Jan
Logo
08:30 - 14:55LHR-ORD
12h 25m1 stop
Logo
16:00 - 06:20ORD-LHR
8h 20mdirect
$881
Find Deal
Sun, 21 Sep - Sun, 28 Sep
United Airlines Logo
08:30 - 14:55LHR-ORD
12h 25m1 stop
United Airlines Logo
14:32 - 06:55ORD-LHR
10h 23m1 stop
$883United Airlines
Find Deal
Fri, 5 Sep - Sat, 13 Sep
Austrian Airlines Logo
06:00 - 13:20LHR-ORD
13h 20m1 stop
Austrian Airlines Logo
18:00 - 08:20ORD-LHR
8h 20mdirect
$886Austrian Airlines
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Fri, 5 Sep - Mon, 6 Oct
Austrian Airlines Logo
06:00 - 13:20LHR-ORD
13h 20m1 stop
Austrian Airlines Logo
16:20 - 14:20ORD-LHR
16h 00m1 stop
$891Austrian Airlines
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Mon, 8 Sep - Sun, 5 Oct
Icelandair Logo
21:25 - 18:15LHR-ORD
26h 50m1 stop
Icelandair Logo
19:25 - 11:55ORD-LHR
10h 30m1 stop
$895Icelandair
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Wed, 10 Sep - Wed, 17 Sep
Scandinavian Airlines Logo
19:50 - 16:10LHR-ORD
26h 20m2 stops
Scandinavian Airlines Logo
19:20 - 18:50ORD-LHR
17h 30m2 stops
$904Scandinavian Airlines
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Fri, 24 Oct - Mon, 10 Nov
Icelandair Logo
21:25 - 18:15LHR-ORD
26h 50m1 stop
Icelandair Logo
19:25 - 11:55ORD-LHR
10h 30m1 stop
$906Icelandair
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Mon, 15 Sep - Sun, 21 Sep

Lufthansa flights from London Heathrow Airport to Chicago

Our best Lufthansa deals on London Heathrow Airport to Chicago flight tickets
Lufthansa
17 Feb
LHR07:40London Heathrow
12h 30m
1 stop
ORD14:10Chicago O'Hare Intl
27 Mar
ORD16:45Chicago O'Hare Intl
8h 10m
LHR05:55London Heathrow
$874
Find similar
Lufthansa
26 Nov
LHR07:40London Heathrow
12h 30m
1 stop
ORD14:10Chicago O'Hare Intl
16 Jan
ORD15:45Chicago O'Hare Intl
8h 10m
LHR05:55London Heathrow
$878
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
13 Sept
LHR09:05London Heathrow
34h 15m
1 stop
ORD13:20Chicago O'Hare Intl
5 Oct
ORD14:08Chicago O'Hare Intl
10h 22m
1 stop
LHR06:30London Heathrow
$877
Find similar
United Airlines
1 Sept
LHR07:25London Heathrow
12h 40m
1 stop
ORD14:05Chicago O'Hare Intl
30 Sept
ORD11:45Chicago O'Hare Intl
12h 10m
1 stop
LHR05:55London Heathrow
$878
Find similar
United Airlines
1 Sept
LHR07:25London Heathrow
12h 40m
1 stop
ORD14:05Chicago O'Hare Intl
22 Sept
ORD14:32Chicago O'Hare Intl
10h 23m
1 stop
LHR06:55London Heathrow
$880
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 26 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 17/2

07:40-14:10

1 stop12h 30m

Chicago O'Hare Intl

Fri 27/3

16:45-05:55

Nonstop8h 10m

$874

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 13/9

09:05-13:20

1 stop34h 15m

Chicago O'Hare Intl

Sun 5/10

21:25-11:45

Nonstop8h 20m

$877

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 26/11

07:40-14:10

1 stop12h 30m

Chicago O'Hare Intl

Thu 15/1

15:45-05:55

Nonstop8h 10m

$878

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 21/9

08:30-14:55

1 stop12h 25m

Chicago O'Hare Intl

Sun 28/9

16:00-06:20

Nonstop8h 20m

$881

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 5/9

08:30-14:55

1 stop12h 25m

Chicago O'Hare Intl

Sat 13/9

14:32-06:55

1 stop10h 23m

$883

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 5/9

06:00-13:20

1 stop13h 20m

Chicago O'Hare Intl

Mon 6/10

18:00-08:20

Nonstop8h 20m

$886

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 8/9

06:00-13:20

1 stop13h 20m

Chicago O'Hare Intl

Sun 5/10

16:20-14:20

1 stop16h 00m

$891

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 10/9

21:25-18:15

1 stop26h 50m

Chicago O'Hare Intl

Wed 17/9

19:25-11:55

1 stop10h 30m

$895

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 24/10

19:50-16:10

2 stops26h 20m

Chicago O'Hare Intl

Mon 10/11

19:20-18:50

2 stops17h 30m

$904

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 15/9

21:25-18:15

1 stop26h 50m

Chicago O'Hare Intl

Sun 21/9

19:25-11:55

1 stop10h 30m

$906

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 March to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $934.

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

Our data shows that Wednesday is the least expensive day to fly to Chicago. Tickets to fly out on this day can be as low as $1,146. Flights from London Heathrow Airport to Chicago on a Thursday will generally be more expensive and average around $2,829. 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 at midday. Our users have found flights to Chicago at midday for as low as $1,028. Flights in the morning are often more expensive, with an average ticket price of $1,194.

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 $1,126 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 $1,077 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 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

Best price found

$2,829

Fastest flight time

8h 25m

Direct flights

Every day

Airports in Chicago

1 airport
The best flight deal from London Heathrow Airport to Chicago found on momondo in the last 72 hours is $2,829
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)
Search flight deals

  • 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 8h 35m, 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