Cheap flights from London to Chicago from €437

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from London to Chicago departing on 12/8. 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

Brussels Airlines Logo
08:30 - 11:25LHR-ORD
8h 55mdirect
Brussels Airlines Logo
18:05 - 08:20ORD-LHR
8h 15mdirect
€437Brussels Airlines
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Tue, 12 Aug - Tue, 19 Aug
Icelandair Logo
21:25 - 18:15LHR-ORD
26h 50m1 stop
Icelandair Logo
22:15 - 20:20ORD-LHR
16h 05m1 stop
€458Icelandair
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Tue, 26 Aug - Tue, 2 Sep
Scandinavian Airlines Logo
06:40 - 16:45LHR-ORD
16h 05m1 stop
Scandinavian Airlines Logo
19:20 - 18:50ORD-LHR
17h 30m2 stops
€460Scandinavian Airlines
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Wed, 19 Nov - Mon, 24 Nov
Scandinavian Airlines Logo
06:40 - 16:45LHR-ORD
16h 05m1 stop
Scandinavian Airlines Logo
19:20 - 18:50ORD-LHR
17h 30m2 stops
€461Scandinavian Airlines
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Sat, 8 Nov - Sat, 15 Nov
TAP AIR PORTUGAL Logo
06:00 - 16:30LHR-ORD
16h 30m1 stop
TAP AIR PORTUGAL Logo
18:15 - 22:00ORD-LHR
21h 45m1 stop
€463TAP AIR PORTUGAL
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Sat, 6 Sep - Sat, 13 Sep
JetBlue Logo
08:15 - 20:49LHR-ORD
18h 34m1 stop
JetBlue Logo
09:42 - 06:30ORD-LHR
14h 48m1 stop
€464JetBlue
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Fri, 5 Sep - Wed, 17 Sep
TAP AIR PORTUGAL Logo
13:45 - 10:55LHR-ORD
27h 10m1 stop
TAP AIR PORTUGAL Logo
18:00 - 17:45ORD-LHR
17h 45m1 stop
€465TAP AIR PORTUGAL
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Wed, 17 Sep - Sun, 21 Sep
United Airlines Logo
08:55 - 17:15LHR-ORD
13h 20m1 stop
United Airlines Logo
21:20 - 11:20ORD-LHR
33h 00m1 stop
€470United Airlines
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Sat, 1 Nov - Sat, 1 Nov
JetBlue Logo
08:25 - 16:41LHR-ORD
14h 16m1 stop
JetBlue Logo
09:42 - 06:30ORD-LHR
14h 48m1 stop
€474JetBlue
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Sun, 31 Aug - Tue, 7 Oct
United Airlines Logo
08:55 - 16:15LHR-ORD
13h 20m1 stop
United Airlines Logo
17:50 - 07:55ORD-LHR
8h 05mdirect
€483United Airlines
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Thu, 6 Nov - Wed, 12 Nov

Icelandair flights from London to Chicago

Our best Icelandair deals on London to Chicago flight tickets
Icelandair
26 Aug
LHR21:25London Heathrow
26h 50m
1 stop
ORD18:15Chicago O'Hare Intl
2 Sept
ORD22:15Chicago O'Hare Intl
16h 05m
1 stop
LHR20:20London Heathrow
Icelandair
27 Aug
LHR13:05London Heathrow
11h 10m
1 stop
ORD18:15Chicago O'Hare Intl
3 Sept
ORD19:25Chicago O'Hare Intl
10h 30m
1 stop
LHR11:55London Heathrow
Icelandair
4 Sept
LHR13:05London Heathrow
14h 10m
1 stop
ORD21:15Chicago O'Hare Intl
6 Oct
ORD19:25Chicago O'Hare Intl
10h 30m
1 stop
LHR11:55London Heathrow

Scandinavian Airlines flights from London to Chicago

Our best Scandinavian Airlines deals on London to Chicago flight tickets
Scandinavian Airlines
19 Nov
LHR06:40London Heathrow
16h 05m
1 stop
ORD16:45Chicago O'Hare Intl
24 Nov
ORD19:20Chicago O'Hare Intl
17h 30m
2 stops
LHR18:50London Heathrow
Scandinavian Airlines
8 Nov
LHR06:40London Heathrow
16h 05m
1 stop
ORD16:45Chicago O'Hare Intl
15 Nov
ORD19:20Chicago O'Hare Intl
17h 30m
2 stops
LHR18:50London Heathrow
Scandinavian Airlines
6 Nov
LHR07:05London Heathrow
15h 40m
2 stops
ORD16:45Chicago O'Hare Intl
9 Nov
ORD19:20Chicago O'Hare Intl
15h 05m
2 stops
LHR16:25London Heathrow

See travel insights to Chicago from

How to get the cheapest flight ticket from London 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 typical price of a round-trip flight between London and Chicago?

What is the cheapest month to fly to Chicago?

The cheapest month to fly to Chicago from London is in February. Flight prices, which tend to average around €496, are often lower during this time because this is during the off-season. If you don’t want to visit Chicago in February, then you should wait until March to fly from London, when ticket prices are also cheap, with an average price of €522.

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

On average, the least expensive day to fly to Chicago from London is on a Thursday. momondo users have found tickets for Thursday departures for as low as €572. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to Chicago on Tuesday is €3,201.

What is the cheapest London to Chicago flight route?

Fly from London Heathrow to Chicago O'Hare Intl for the best London - 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 when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around €631 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 for as low as €596 on momondo.

What cabin class options are available on London to Chicago flights?

There are 1 cabin classes available to choose from on London to Chicago flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have London to Chicago flight prices changed over time?

As of July 2025, prices for London to Chicago flights are approximately 5% more expensive when compared to flights at the same time last year.

When to book flights from London to Chicago

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

Cheap London to Chicago (LON to CHI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Chicago

Best price found

€471

Fastest flight time

8h 35m

Direct flights

Every day

Airports in Chicago

1 airport
The best one-way flight to Chicago from London in the past 72 hours is €471. The best return flight deal from London to Chicago found on momondo in the last 72 hours is €437.
The fastest flight from London to Chicago takes 8h 35m
Direct flights go from London to Chicago every day.
There is 1 airport near Chicago: Chicago O'Hare Intl (ORD)

  • How far is London to Chicago by plane?

    A flight from London to Chicago will travel around 6349.2 km. By plane, this route typically takes 8h 55m.

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

    Prices for flights from London to Chicago were last updated today.

  • How old do you have to be to fly from London to Chicago?

    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 to Chicago.

  • What documentation or ID do you need to fly to Chicago?

    The necessary travel and health documents for your Chicago trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from London to Chicago?


Why use momondo?

Why should I use momondo to find a flight deal from London to Chicago?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Chicago for you.

Can I find flights from London to Chicago with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for London to Chicago flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Chicago from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of London to Chicago flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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1 adult
Fri 18/7
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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