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Cheap flights from London Heathrow Airport to Chicago from £396

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 11/4. 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

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
19:30 - 16:45LHR-ORD
27h 15m1 stop
Scandinavian Airlines Logo
19:20 - 16:00ORD-LHR
14h 40m1 stop
£400Scandinavian Airlines
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Wed, 12 Nov - Wed, 19 Nov
TAP AIR PORTUGAL Logo
18:30 - 14:45LHR-ORD
26h 15m1 stop
TAP AIR PORTUGAL Logo
20:15 - 22:40ORD-LHR
20h 25m1 stop
£400TAP AIR PORTUGAL
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Sat, 22 Nov - Fri, 28 Nov
Scandinavian Airlines Logo
07:05 - 16:45LHR-ORD
15h 40m2 stops
Scandinavian Airlines Logo
19:20 - 16:00ORD-LHR
14h 40m1 stop
£401Scandinavian Airlines
Find Deal
Thu, 13 Nov - Mon, 24 Nov
Scandinavian Airlines Logo
10:20 - 16:45LHR-ORD
12h 25m1 stop
Scandinavian Airlines Logo
19:20 - 16:25ORD-LHR
15h 05m2 stops
£402Scandinavian Airlines
Find Deal
Sat, 15 Nov - Sat, 22 Nov
Scandinavian Airlines Logo
06:40 - 16:45LHR-ORD
16h 05m2 stops
Scandinavian Airlines Logo
19:20 - 21:40ORD-LHR
20h 20m1 stop
£403Scandinavian Airlines
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Sun, 23 Nov - Sun, 30 Nov
Scandinavian Airlines Logo
07:05 - 16:45LHR-ORD
15h 40m2 stops
Scandinavian Airlines Logo
19:20 - 16:25ORD-LHR
15h 05m2 stops
£403Scandinavian Airlines
Find Deal
Wed, 19 Nov - Wed, 26 Nov
Scandinavian Airlines Logo
06:40 - 16:45LHR-ORD
16h 05m1 stop
Scandinavian Airlines Logo
19:20 - 16:25ORD-LHR
15h 05m2 stops
£404Scandinavian Airlines
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Thu, 13 Nov - Sun, 16 Nov
Icelandair Logo
20:35 - 17:20LHR-ORD
26h 45m1 stop
Icelandair Logo
18:30 - 19:30ORD-LHR
19h 00m1 stop
£425Icelandair
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Tue, 2 Dec - Tue, 9 Dec
Icelandair Logo
12:15 - 17:20LHR-ORD
11h 05m1 stop
Icelandair Logo
18:30 - 19:30ORD-LHR
19h 00m1 stop
£428Icelandair
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Mon, 19 Jan - Tue, 3 Feb
Icelandair Logo
12:15 - 17:20LHR-ORD
11h 05m1 stop
Icelandair Logo
18:30 - 19:30ORD-LHR
19h 00m1 stop
£431Icelandair
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Wed, 7 Jan - Mon, 12 Jan

Scandinavian Airlines flights from London Heathrow Airport to Chicago O'Hare Intl Airport

Our best Scandinavian Airlines deals on London Heathrow Airport to Chicago O'Hare Intl Airport flight tickets
Scandinavian Airlines
12 Nov
LHR19:30London Heathrow
27h 15m
1 stop
ORD16:45Chicago O'Hare Intl
19 Nov
ORD19:20Chicago O'Hare Intl
14h 40m
1 stop
LHR16:00London Heathrow
£400
Find similar
Scandinavian Airlines
13 Nov
LHR07:05London Heathrow
15h 40m
2 stops
ORD16:45Chicago O'Hare Intl
24 Nov
ORD19:20Chicago O'Hare Intl
14h 40m
1 stop
LHR16:00London Heathrow
£401
Find similar
Scandinavian Airlines
15 Nov
LHR10:20London Heathrow
12h 25m
1 stop
ORD16:45Chicago O'Hare Intl
22 Nov
ORD19:20Chicago O'Hare Intl
15h 05m
2 stops
LHR16:25London Heathrow
£402
Find similar

Icelandair flights from London Heathrow Airport to Chicago O'Hare Intl Airport

Our best Icelandair deals on London Heathrow Airport to Chicago O'Hare Intl Airport flight tickets
Icelandair
4 Nov
LHR12:15London Heathrow
11h 05m
1 stop
ORD17:20Chicago O'Hare Intl
12 Jan
ORD18:30Chicago O'Hare Intl
10h 20m
1 stop
LHR10:50London Heathrow
£414
Find similar
Icelandair
5 Nov
LHR12:15London Heathrow
11h 05m
1 stop
ORD17:20Chicago O'Hare Intl
10 Nov
ORD18:30Chicago O'Hare Intl
19h 00m
1 stop
LHR19:30London Heathrow
£415
Find similar
Icelandair
4 Nov
LHR12:15London Heathrow
11h 05m
1 stop
ORD17:20Chicago O'Hare Intl
11 Nov
ORD18:30Chicago O'Hare Intl
10h 20m
1 stop
LHR10:50London Heathrow
£421
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Chicago O'Hare Intl Airport 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 279,928 searches. Data last updated 29 October 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 12/11

19:30-16:45

1 stop27h 15m

Chicago O'Hare Intl

Wed 19/11

19:20-16:00

1 stop14h 40m

£400

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 22/11

18:30-14:45

1 stop26h 15m

Chicago O'Hare Intl

Fri 28/11

20:15-22:40

1 stop20h 25m

£400

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 13/11

07:05-16:45

2 stops15h 40m

Chicago O'Hare Intl

Mon 24/11

19:20-16:00

1 stop14h 40m

£401

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 15/11

10:20-16:45

1 stop12h 25m

Chicago O'Hare Intl

Sat 22/11

19:20-16:25

2 stops15h 05m

£402

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 23/11

06:40-16:45

2 stops16h 05m

Chicago O'Hare Intl

Sun 30/11

19:20-21:40

1 stop20h 20m

£403

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 19/11

07:05-16:45

2 stops15h 40m

Chicago O'Hare Intl

Wed 26/11

19:20-16:25

2 stops15h 05m

£403

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 13/11

06:40-16:45

1 stop16h 05m

Chicago O'Hare Intl

Sun 16/11

19:20-16:25

2 stops15h 05m

£404

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 2/12

20:35-17:20

1 stop26h 45m

Chicago O'Hare Intl

Tue 9/12

18:30-19:30

1 stop19h 00m

£425

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 19/1

12:15-17:20

1 stop11h 05m

Chicago O'Hare Intl

Tue 3/2

18:30-19:30

1 stop19h 00m

£428

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 7/1

12:15-17:20

1 stop11h 05m

Chicago O'Hare Intl

Mon 12/1

18:30-19:30

1 stop19h 00m

£431

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 O'Hare Intl Airport

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 O'Hare Intl Airport?

The cheapest month to fly to Chicago O'Hare Intl Airport from London Heathrow Airport is in September. Flight prices, which tend to average around £439, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to Chicago O'Hare Intl Airport from London Heathrow Airport during February instead. Flights to Chicago O'Hare Intl Airport in February, while not as cheap as those in September, still average around £445.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart from London Heathrow Airport to Chicago O'Hare Intl Airport is on a Wednesday. Travellers who choose to depart for Chicago O'Hare Intl Airport on a Wednesday will often find tickets for as low as £617. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Chicago O'Hare Intl Airport on Saturday is £679.

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest time of day to fly to Chicago O'Hare Intl Airport is in the evening when flights can be purchased for as low as £571. In contrast, the most expensive time of day to depart to Chicago O'Hare Intl Airport is in the afternoon when prices are around £678.

What is the cheapest London Heathrow to Chicago O'Hare Intl flight route?

Fly from London Heathrow to Chicago O'Hare Intl for the best London Heathrow - Chicago O'Hare Intl flight prices

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around £550 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from London Heathrow Airport for as low as £521 on momondo.

What cabin class options are available on London Heathrow to Chicago O'Hare Intl flights?

There are 4 cabin classes available to choose from on London Heathrow to Chicago O'Hare Intl 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 O'Hare Intl Airport flights?

You could potentially save up to 17% on your flight if you consider stops on a London Heathrow Airport to Chicago O'Hare Intl Airport flight.

How have London Heathrow Airport to Chicago O'Hare Intl Airport flight prices changed over time?

As of October 2025, prices for London Heathrow Airport to Chicago O'Hare Intl Airport flights are approximately 32% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Chicago O'Hare Intl Airport

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

Cheap London Heathrow Airport to Chicago O'Hare Intl Airport (LHR to ORD) flight deals and tips

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

Best price found

£453

Fastest flight time

8h 35m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from London Heathrow Airport in the past 72 hours is £453. The best return flight deal from London Heathrow Airport to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is £557.
The fastest flight from London Heathrow Airport to Chicago O'Hare Intl Airport takes 8h 35m
Direct flights go from London Heathrow Airport to Chicago O'Hare Intl Airport every day.
Search flight deals

  • How far is London Heathrow to Chicago O'Hare Intl by plane?

    The distance between London Heathrow and Chicago O'Hare Intl is about 3939.2 mi. Flights usually cover this in 11h 05m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from London Heathrow Airport to Chicago O'Hare Intl Airport were last updated today.

  • How many operators does momondo search for flights from London Heathrow Airport to Chicago O'Hare Intl Airport?

  • How old do you have to be to fly from London Heathrow Airport to Chicago O'Hare Intl Airport?

    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 Heathrow Airport to Chicago O'Hare Intl Airport.

  • What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

    The travel and health documents you'll need for your trip to Chicago O'Hare Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chicago O'Hare Intl Airport. It is always advisable to seek 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 O'Hare Intl Airport?

  • What is the most popular airline from London Heathrow Airport to Chicago O'Hare Intl Airport?

Best airlines flying from London Heathrow Airport to Chicago O'Hare Intl Airport

Compare and see reviews for airlines that fly from London Heathrow Airport to Chicago O'Hare Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom £343Free CancellationRating
7.1
562 reviews
Search Icelandair flights
Virgin AtlanticPriceFrom £348Free CancellationRating
7.5
670 reviews
Search Virgin Atlantic flights
Scandinavian AirlinesPriceFrom £359Free CancellationRating
7.4
1,543 reviews
Search Scandinavian Airlines flights
TAP AIR PORTUGALPriceFrom £372Free CancellationRating
7.1
2,035 reviews
Search TAP AIR PORTUGAL flights
Aer LingusPriceFrom £373Free CancellationRating
7.2
1,361 reviews
Search Aer Lingus flights
Brussels AirlinesPriceFrom £389Free CancellationRating
7.2
368 reviews
Search Brussels Airlines flights
LufthansaPriceFrom £400Free CancellationRating
6.8
7,535 reviews
Search Lufthansa flights
Austrian AirlinesPriceFrom £407Free CancellationRating
7.6
861 reviews
Search Austrian Airlines flights
British AirwaysPriceFrom £408Free CancellationRating
6.7
7,483 reviews
Search British Airways flights
United AirlinesPriceFrom £412Free CancellationRating
7.4
9,001 reviews
Search United Airlines flights

  • Austrian Airlines Flights From London Heathrow Airport to Chicago O'Hare Intl Airport

    Austrian Airlines flight deals from London Heathrow Airport to Chicago O'Hare Intl Airport start from £407 round-trip. Over the 14 Austrian Airlines flights for this route in a normal week, average airfare is usually £608 round-trip - but some users have found much cheaper deals with momondo.

  • Finnair Flights From London Heathrow Airport to Chicago O'Hare Intl Airport

    Another popular option for London Heathrow Airport to Chicago O'Hare Intl Airport flights is Finnair (7.6/10, 1,333 ratings). Finnair flies from London Heathrow Airport to Chicago O'Hare Intl Airport around 23 times per week, with deals starting from £433 round-trip and rising to an average price of around £572.

Travelling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Racine
Evanston
Northbrook
Schaumburg
Lincolnshire
Lake Geneva
Oak Brook
Joliet
Oak Park
Elgin
Rosemont

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?

Yes. momondo enables you to select and highlight flights to Chicago from London with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Chicago from London.

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

If you are simply researching potential flights to Chicago, momondo offers a useful price alert feature which will track prices for flights to Chicago from London and alert you when they change.

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