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Cheap flights from London Heathrow Airport to Chicago from £260

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 30/9. 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

Lufthansa Logo
11:10 - 18:25LHR-ORD
13h 15m1 stop
Lufthansa Logo
16:20 - 10:45ORD-LHR
12h 25m1 stop
£362Lufthansa
Find Deal
Fri, 28 Nov - Wed, 3 Dec
Lufthansa Logo
07:40 - 19:25LHR-ORD
16h 45m1 stop
Lufthansa Logo
16:20 - 12:50ORD-LHR
14h 30m1 stop
£364Lufthansa
Find Deal
Thu, 30 Oct - Tue, 4 Nov
Scandinavian Airlines Logo
10:20 - 16:45LHR-ORD
12h 25m1 stop
Scandinavian Airlines Logo
19:20 - 17:40ORD-LHR
16h 20m1 stop
£379Scandinavian Airlines
Find Deal
Sat, 8 Nov - Sat, 15 Nov
Scandinavian Airlines Logo
06:40 - 16:45LHR-ORD
16h 05m1 stop
Scandinavian Airlines Logo
19:20 - 16:00ORD-LHR
14h 40m1 stop
£382Scandinavian Airlines
Find Deal
Thu, 6 Nov - Sun, 9 Nov
United Airlines Logo
09:30 - 16:40LHR-ORD
13h 10m1 stop
United Airlines Logo
21:12 - 08:35ORD-LHR
29h 23m1 stop
£396United Airlines
Find Deal
Sat, 11 Oct - Sat, 11 Oct
Icelandair Logo
21:25 - 21:15LHR-ORD
29h 50m1 stop
Icelandair Logo
22:15 - 20:20ORD-LHR
16h 05m1 stop
£397Icelandair
Find Deal
Tue, 30 Sep - Sun, 5 Oct
Icelandair Logo
13:05 - 21:15LHR-ORD
14h 10m1 stop
Icelandair Logo
19:25 - 11:55ORD-LHR
10h 30m1 stop
£399Icelandair
Find Deal
Thu, 11 Sep - Thu, 18 Sep
British Airways Logo
09:50 - 15:45LHR-ORD
11h 55m1 stop
British Airways Logo
19:15 - 09:10ORD-LHR
7h 55mdirect
£405British Airways
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Wed, 17 Sep - Sun, 21 Sep
United Airlines Logo
08:40 - 15:55LHR-ORD
13h 15m1 stop
United Airlines Logo
12:45 - 07:40ORD-LHR
12h 55m1 stop
£409United Airlines
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Wed, 10 Sep - Wed, 17 Sep
British Airways Logo
09:50 - 15:45LHR-ORD
11h 55m1 stop
British Airways Logo
19:15 - 09:10ORD-LHR
7h 55mdirect
£411British Airways
Find Deal
Thu, 25 Sep - Mon, 29 Sep

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
8 Nov
LHR10:20London Heathrow
12h 25m
1 stop
ORD16:45Chicago O'Hare Intl
15 Nov
ORD19:20Chicago O'Hare Intl
16h 20m
1 stop
LHR17:40London Heathrow
£379
Find similar
Scandinavian Airlines
6 Nov
LHR06:40London Heathrow
16h 05m
1 stop
ORD16:45Chicago O'Hare Intl
9 Nov
ORD19:20Chicago O'Hare Intl
14h 40m
1 stop
LHR16:00London Heathrow
£382
Find similar
Scandinavian Airlines
3 Dec
LHR06:40London Heathrow
16h 05m
1 stop
ORD16:45Chicago O'Hare Intl
14 Jan
ORD19:20Chicago O'Hare Intl
16h 20m
1 stop
LHR17:40London Heathrow
£384
Find similar

TAP AIR PORTUGAL flights from London Heathrow Airport to Chicago O'Hare Intl Airport

Our best TAP AIR PORTUGAL deals on London Heathrow Airport to Chicago O'Hare Intl Airport flight tickets
TAP AIR PORTUGAL
17 Sept
LHR18:45London Heathrow
22h 10m
1 stop
ORD10:55Chicago O'Hare Intl
28 Sept
ORD18:00Chicago O'Hare Intl
12h 45m
1 stop
LHR12:45London Heathrow
£389
Find similar
TAP AIR PORTUGAL
23 Oct
LHR19:50London Heathrow
26h 20m
1 stop
ORD16:10Chicago O'Hare Intl
26 Oct
ORD21:25Chicago O'Hare Intl
20h 15m
1 stop
LHR22:40London Heathrow
£407
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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 30 July 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

Fri 28/11

11:10-18:25

1 stop13h 15m

Chicago O'Hare Intl

Wed 3/12

16:20-10:45

1 stop12h 25m

£362

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 30/10

07:40-19:25

1 stop16h 45m

Chicago O'Hare Intl

Tue 4/11

16:20-12:50

1 stop14h 30m

£364

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 8/11

10:20-16:45

1 stop12h 25m

Chicago O'Hare Intl

Sat 15/11

19:20-17:40

1 stop16h 20m

£379

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 6/11

06:40-16:45

1 stop16h 05m

Chicago O'Hare Intl

Sun 9/11

19:20-16:00

1 stop14h 40m

£382

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 11/10

09:30-16:40

1 stop13h 10m

Chicago O'Hare Intl

Sat 11/10

21:12-08:35

1 stop29h 23m

£396

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 30/9

21:25-21:15

1 stop29h 50m

Chicago O'Hare Intl

Sun 5/10

22:15-20:20

1 stop16h 05m

£397

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 11/9

13:05-21:15

1 stop14h 10m

Chicago O'Hare Intl

Thu 18/9

19:25-11:55

1 stop10h 30m

£399

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 17/9

09:50-15:45

1 stop11h 55m

Chicago O'Hare Intl

Sun 21/9

19:15-09:10

Nonstop7h 55m

£405

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 10/9

08:40-15:55

1 stop13h 15m

Chicago O'Hare Intl

Wed 17/9

12:45-07:40

1 stop12h 55m

£409

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 25/9

09:50-15:45

1 stop11h 55m

Chicago O'Hare Intl

Mon 29/9

19:15-09:10

Nonstop7h 55m

£411

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 February. Flight prices, which tend to average around £447, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Chicago O'Hare Intl Airport from London Heathrow Airport during September instead. Flights to Chicago O'Hare Intl Airport in September, while not as cheap as those in February, still average around £499.

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 £608. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Chicago O'Hare Intl Airport on Sunday is £672.

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 £570. In contrast, the most expensive time of day to depart to Chicago O'Hare Intl Airport is in the afternoon when prices are around £672.

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 £553 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?

No. A direct flight is the cheapest option for a flight between London Heathrow Airport to Chicago O'Hare Intl Airport.

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

As of July 2025, prices for London Heathrow Airport to Chicago O'Hare Intl Airport flights are approximately 21% 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

£260

Fastest flight time

11h 10m

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 £260. The best return flight deal from London Heathrow Airport to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is £362.
The fastest flight from London Heathrow Airport to Chicago O'Hare Intl Airport takes 11h 10m
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 10m, 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 £346Free CancellationRating
7.0
521 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom £356Free CancellationRating
7.3
1,449 reviews
Search Scandinavian Airlines flights
TAP AIR PORTUGALPriceFrom £371Free CancellationRating
7.1
1,929 reviews
Search TAP AIR PORTUGAL flights
Virgin AtlanticPriceFrom £385Free CancellationRating
7.4
655 reviews
Search Virgin Atlantic flights
Brussels AirlinesPriceFrom £397Free CancellationRating
7.2
350 reviews
Search Brussels Airlines flights
LufthansaPriceFrom £400Free CancellationRating
6.8
7,265 reviews
Search Lufthansa flights
Austrian AirlinesPriceFrom £406Free CancellationRating
7.6
821 reviews
Search Austrian Airlines flights
United AirlinesPriceFrom £410Free CancellationRating
7.4
8,899 reviews
Search United Airlines flights
British AirwaysPriceFrom £411Free CancellationRating
6.6
7,215 reviews
Search British Airways flights
KLMPriceFrom £419Free CancellationRating
7.8
1,383 reviews
Search KLM 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 £542 round-trip. Over the 21 Austrian Airlines flights for this route in a normal week, average airfare is usually £783 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, 1,316 ratings). Finnair flies from London Heathrow Airport to Chicago O'Hare Intl Airport around 33 times per week, with deals starting from £594 round-trip and rising to an average price of around £759.

Travelling to a place near Chicago?

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