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Cheap flights from London Heathrow Airport to Chicago from £395

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 23/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

Enter your travel dates to find the best prices.
Icelandair Logo
12:15 - 18:20
LHR
-
ORD
11h 05m1 stop
Icelandair Logo
19:25 - 20:20
ORD
-
LHR
18h 55m1 stop
£454Icelandair
Tue, 17 Mar - Mon, 4 May
Icelandair Logo
20:35 - 18:20
LHR
-
ORD
26h 45m1 stop
Icelandair Logo
19:25 - 11:55
ORD
-
LHR
10h 30m1 stop
£455Icelandair
Sun, 15 Mar - Thu, 30 Apr
Scandinavian Airlines Logo
10:20 - 17:45
LHR
-
ORD
12h 25m1 stop
Scandinavian Airlines Logo
19:15 - 16:00
ORD
-
LHR
14h 45m1 stop
£456Scandinavian Airlines
Thu, 19 Mar - Wed, 29 Apr
Scandinavian Airlines Logo
06:40 - 17:45
LHR
-
ORD
40h 05m2 stops
Scandinavian Airlines Logo
19:15 - 16:00
ORD
-
LHR
14h 45m1 stop
£459Scandinavian Airlines
Sun, 15 Mar - Wed, 29 Apr
Scandinavian Airlines Logo
06:40 - 17:45
LHR
-
ORD
16h 05m1 stop
Scandinavian Airlines Logo
19:15 - 16:00
ORD
-
LHR
14h 45m1 stop
£459Scandinavian Airlines
Wed, 25 Mar - Wed, 15 Apr
Icelandair Logo
12:15 - 18:20
LHR
-
ORD
11h 05m1 stop
Icelandair Logo
19:25 - 11:55
ORD
-
LHR
10h 30m1 stop
£460Icelandair
Tue, 17 Mar - Fri, 1 May
Icelandair Logo
12:15 - 17:20
LHR
-
ORD
11h 05m1 stop
Icelandair Logo
19:25 - 20:20
ORD
-
LHR
18h 55m1 stop
£461Icelandair
Wed, 25 Feb - Sun, 29 Mar
Scandinavian Airlines Logo
10:20 - 16:45
LHR
-
ORD
12h 25m1 stop
Scandinavian Airlines Logo
19:20 - 16:25
ORD
-
LHR
15h 05m2 stops
£462Scandinavian Airlines
Mon, 19 Jan - Fri, 23 Jan
Scandinavian Airlines Logo
06:40 - 17:45
LHR
-
ORD
16h 05m1 stop
Scandinavian Airlines Logo
19:15 - 16:00
ORD
-
LHR
14h 45m1 stop
£462Scandinavian Airlines
Thu, 19 Mar - Mon, 6 Apr
Icelandair Logo
20:35 - 17:20
LHR
-
ORD
26h 45m1 stop
Icelandair Logo
18:30 - 10:50
ORD
-
LHR
10h 20m1 stop
£463Icelandair
Sun, 11 Jan - Thu, 15 Jan

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
17 Mar
LHR12:15London Heathrow
11h 05m
1 stop
ORD18:20Chicago O'Hare Intl
5 May
ORD19:25Chicago O'Hare Intl
18h 55m
1 stop
LHR20:20London Heathrow
£454
Find similar
Icelandair
15 Mar
LHR20:35London Heathrow
26h 45m
1 stop
ORD18:20Chicago O'Hare Intl
5 May
ORD19:25Chicago O'Hare Intl
18h 55m
1 stop
LHR20:20London Heathrow
£455
Find similar
Icelandair
17 Mar
LHR12:15London Heathrow
11h 05m
1 stop
ORD18:20Chicago O'Hare Intl
1 May
ORD19:25Chicago O'Hare Intl
10h 30m
1 stop
LHR11:55London Heathrow
£460
Find similar

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
19 Mar
LHR10:20London Heathrow
12h 25m
1 stop
ORD17:45Chicago O'Hare Intl
29 Apr
ORD19:15Chicago O'Hare Intl
14h 45m
1 stop
LHR16:00London Heathrow
£456
Find similar
Scandinavian Airlines
15 Mar
LHR06:40London Heathrow
40h 05m
2 stops
ORD17:45Chicago O'Hare Intl
29 Apr
ORD19:15Chicago O'Hare Intl
14h 45m
1 stop
LHR16:00London Heathrow
£459
Find similar
Scandinavian Airlines
25 Mar
LHR06:40London Heathrow
16h 05m
1 stop
ORD17:45Chicago O'Hare Intl
15 Apr
ORD19:15Chicago O'Hare Intl
14h 45m
1 stop
LHR16:00London Heathrow
£459
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 12 December 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

Tue 17/3

12:15-18:20

1 stop11h 05m

Chicago O'Hare Intl

Mon 4/5

19:25-20:20

1 stop18h 55m

£454

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 15/3

20:35-18:20

1 stop26h 45m

Chicago O'Hare Intl

Thu 30/4

19:25-11:55

1 stop10h 30m

£455

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 19/3

10:20-17:45

1 stop12h 25m

Chicago O'Hare Intl

Wed 29/4

19:15-16:00

1 stop14h 45m

£456

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 15/3

06:40-17:45

2 stops40h 05m

Chicago O'Hare Intl

Wed 29/4

19:15-16:00

1 stop14h 45m

£459

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 25/3

06:40-17:45

1 stop16h 05m

Chicago O'Hare Intl

Wed 15/4

19:15-16:00

1 stop14h 45m

£459

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 17/3

12:15-18:20

1 stop11h 05m

Chicago O'Hare Intl

Fri 1/5

19:25-11:55

1 stop10h 30m

£460

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 25/2

12:15-17:20

1 stop11h 05m

Chicago O'Hare Intl

Sun 29/3

19:25-20:20

1 stop18h 55m

£461

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 19/1

10:20-16:45

1 stop12h 25m

Chicago O'Hare Intl

Fri 23/1

19:20-16:25

2 stops15h 05m

£462

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 19/3

06:40-17:45

1 stop16h 05m

Chicago O'Hare Intl

Mon 6/4

19:15-16:00

1 stop14h 45m

£462

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 11/1

20:35-17:20

1 stop26h 45m

Chicago O'Hare Intl

Thu 15/1

18:30-10:50

1 stop10h 20m

£463

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 £435, 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 £441.

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 £614. 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 £669.

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 £568. In contrast, the most expensive time of day to depart to Chicago O'Hare Intl Airport is in the afternoon when prices are around £665.

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 £542 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 £520 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 1% 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 December 2025, prices for London Heathrow Airport to Chicago O'Hare Intl Airport flights are approximately 4% 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

£484

Fastest flight time

8h 25m

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 £484. The best return flight deal from London Heathrow Airport to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is £535.
The fastest flight from London Heathrow Airport to Chicago O'Hare Intl Airport takes 8h 25m
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 8h 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 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 £339Free CancellationRating
7.0
589 reviews
Search Icelandair flights
Virgin AtlanticPriceFrom £346Free CancellationRating
7.5
675 reviews
Search Virgin Atlantic flights
Scandinavian AirlinesPriceFrom £360Free CancellationRating
7.4
1,605 reviews
Search Scandinavian Airlines flights
Aer LingusPriceFrom £366Free CancellationRating
7.2
1,394 reviews
Search Aer Lingus flights
TAP AIR PORTUGALPriceFrom £369Free CancellationRating
7.1
2,089 reviews
Search TAP AIR PORTUGAL flights
Brussels AirlinesPriceFrom £387Free CancellationRating
7.2
375 reviews
Search Brussels Airlines flights
LufthansaPriceFrom £396Free CancellationRating
6.8
7,626 reviews
Search Lufthansa flights
British AirwaysPriceFrom £404Free CancellationRating
6.7
7,571 reviews
Search British Airways flights
Austrian AirlinesPriceFrom £405Free CancellationRating
7.6
879 reviews
Search Austrian Airlines flights
United AirlinesPriceFrom £410Free CancellationRating
7.4
9,094 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 £405 round-trip. Over the 17 Austrian Airlines flights for this route in a normal week, average airfare is usually £609 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, 1,334 ratings). Finnair flies from London Heathrow Airport to Chicago O'Hare Intl Airport around 28 times per week, with deals starting from £423 round-trip and rising to an average price of around £552.

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
Joliet
Oak Park
Oak Brook
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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