What is the cheapest airline that flies from London to Chicago?

Icelandair and United Airlines are the most popular carriers operating from London to Chicago

What is the most punctual flight time for London to Chicago flights?

Generally, flights departing at night tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

Which airline has the best punctuality record on London to Chicago flights?

According to our data, United Airlines have had the fewest delays on this route over the last 12 months, with about 5% of their flights experiencing any sort of delay.

How often are flights from London to Chicago delayed?

Historically, on average around 11% of flights between London and Chicago have experienced a delay on any given week. The average delay length over the past 12 months has been 170 minutes.

How many flights depart from London to Chicago on average per day?

37 flights are operational daily from London to Chicago as of January 2026. The most popular departure time for this route is 12:00, with 65% of flights per day taking off in the afternoon.

How many flights depart from London to Chicago on average per week?

As of January 2026, 262 flights take off from London and land in Chicago each week. The most common flight departure day for this route is Wed, with 16% of weekly flights taking off on this day.

What day of the week experiences the fewest flight delays on this route?

Saturday is statistically the day of the week that experiences the fewest delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

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.

€375 Cheap Flights from London to Chicago in 2026

Q: What is the typical price of a round-trip flight between London and Chicago?

Prices are currently low for flights on this route. Typical prices usually range from €445 to €545. The lowest price recently found on this route was €441.

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Find the cheapest flights from London to Chicago

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One-way

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Enter your travel dates to find the best prices.

12:15 - 17:20

LHR

ORD

11h 05m

1 stop

18:30 - 10:50

ORD

LHR

10h 20m

1 stop

€441Icelandair

Thu, 19 Feb - Mon, 23 Feb

20:35 - 18:20

LHR

ORD

26h 45m

1 stop

19:25 - 11:55

ORD

LHR

10h 30m

1 stop

€443Icelandair

Sun, 8 Mar - Wed, 29 Apr

12:15 - 18:20

LHR

ORD

11h 05m

1 stop

19:25 - 11:55

ORD

LHR

10h 30m

1 stop

€448Icelandair

Mon, 9 Mar - Fri, 1 May

20:35 - 18:20

LHR

ORD

26h 45m

1 stop

19:25 - 11:55

ORD

LHR

10h 30m

1 stop

€449Icelandair

Sun, 8 Mar - Fri, 1 May

06:40 - 16:45

LHR

ORD

16h 05m

1 stop

20:20 - 16:00

ORD

LHR

14h 40m

1 stop

€450Scandinavian Airlines

Mon, 2 Mar - Mon, 16 Mar

07:05 - 16:45

LHR

ORD

15h 40m

2 stops

20:20 - 21:40

ORD

LHR

20h 20m

1 stop

€453Scandinavian Airlines

Mon, 2 Mar - Mon, 16 Mar

06:00 - 15:25

LHR

ORD

15h 25m

1 stop

20:25 - 17:30

ORD

LHR

15h 05m

1 stop

€454TAP AIR PORTUGAL

Fri, 20 Feb - Sun, 1 Mar

08:50 - 15:10

LHR

ORD

11h 20m

1 stop

18:00 - 07:40

ORD

LHR

7h 40mdirect

€456British Airways

Tue, 17 Mar - Mon, 30 Mar

08:50 - 15:00

LHR

ORD

11h 10m

1 stop

16:21 - 09:40

ORD

LHR

12h 19m

1 stop

€457British Airways

Sun, 8 Mar - Tue, 17 Mar

09:00 - 17:20

LHR

ORD

13h 20m

1 stop

16:45 - 05:55

ORD

LHR

8h 10mdirect

€458United Airlines

Wed, 11 Mar - Wed, 18 Mar

Icelandair flights from London to Chicago

Our best Icelandair deals on London to Chicago flight tickets

Icelandair

19 Feb

LHR12:15London Heathrow

11h 05m

1 stop

ORD17:20Chicago O'Hare Intl

23 Feb

ORD18:30Chicago O'Hare Intl

10h 20m

1 stop

LHR10:50London Heathrow

€441

Icelandair

8 Mar

LHR20:35London Heathrow

26h 45m

1 stop

ORD18:20Chicago O'Hare Intl

28 Apr

ORD19:25Chicago O'Hare Intl

18h 55m

1 stop

LHR20:20London Heathrow

€443

Icelandair

9 Mar

LHR12:15London Heathrow

11h 05m

1 stop

ORD18:20Chicago O'Hare Intl

30 Apr

ORD19:25Chicago O'Hare Intl

18h 55m

1 stop

LHR20:20London Heathrow

€448

United Airlines flights from London to Chicago

Our best United Airlines deals on London to Chicago flight tickets

United Airlines

11 Mar

LHR09:00London Heathrow

13h 20m

1 stop

ORD17:20Chicago O'Hare Intl

18 Mar

ORD13:06Chicago O'Hare Intl

16h 44m

1 stop

LHR10:50London Heathrow

€458

United Airlines

13 Mar

LHR14:50London Heathrow

29h 10m

1 stop

ORD15:00Chicago O'Hare Intl

20 Mar

ORD14:30Chicago O'Hare Intl

15h 20m

1 stop

LHR10:50London Heathrow

€459

United Airlines

19 Feb

LHR08:30London Heathrow

12h 50m

1 stop

ORD15:20Chicago O'Hare Intl

23 Feb

ORD17:50Chicago O'Hare Intl

8h 05m

LHR07:55London Heathrow

€463

Fly from

Fly to

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 19/2

12:15-17:20

1 stop11h 05m

Chicago O'Hare Intl

Mon 23/2

18:30-10:50

1 stop10h 20m

€441

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 8/3

20:35-18:20

1 stop26h 45m

Chicago O'Hare Intl

Wed 29/4

19:25-11:55

1 stop10h 30m

€443

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 9/3

12:15-18:20

1 stop11h 05m

Chicago O'Hare Intl

Fri 1/5

19:25-11:55

1 stop10h 30m

€448

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 8/3

20:35-18:20

1 stop26h 45m

Chicago O'Hare Intl

Fri 1/5

19:25-11:55

1 stop10h 30m

€449

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 2/3

06:40-16:45

1 stop16h 05m

Chicago O'Hare Intl

Mon 16/3

20:20-16:00

1 stop14h 40m

€450

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 2/3

07:05-16:45

2 stops15h 40m

Chicago O'Hare Intl

Mon 16/3

20:20-21:40

1 stop20h 20m

€453

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 20/2

06:00-15:25

1 stop15h 25m

Chicago O'Hare Intl

Sun 1/3

20:25-17:30

1 stop15h 05m

€454

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 17/3

08:50-15:10

1 stop11h 20m

Chicago O'Hare Intl

Mon 30/3

18:00-07:40

Nonstop7h 40m

€456

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 8/3

08:50-15:00

1 stop11h 10m

Chicago O'Hare Intl

Tue 17/3

16:21-09:40

1 stop12h 19m

€457

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 11/3

09:00-17:20

1 stop13h 20m

Chicago O'Hare Intl

Wed 18/3

16:45-05:55

Nonstop8h 10m

€458

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Delays

Other information

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 €482, 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 November to fly from London, when ticket prices are also cheap, with an average price of €484.

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 €648. 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 €3,126.

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 €606 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 €580 on momondo.

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

There is only 1 cabin class 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 January 2026, prices for London to Chicago flights are approximately 9% 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

Fastest flight time	9h 00m
Direct flights	Every day
Airports in Chicago	3 airports

The fastest flight from London to Chicago takes 9h 00m

Direct flights go from London to Chicago every day.

There are 3 airports in Chicago. From London there are direct flights to Chicago O'Hare Intl (ORD).

Search flight deals

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 9h 00m.
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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from London to Chicago is Boeing 767-300 (26.56% of total bookings). The next most popular plane models are Boeing 787-9 Dreamliner (23.77%), Boeing 777 (13.14%), and Boeing 787-10 Dreamliner (10.25%).

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.

An easier way to manage your Chicago trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

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Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Chicago Midway Airport

Chicago O'Hare Intl Airport

Popular Cities in the United States

Flights to New Yorkfrom €265

Flights to Orlandofrom €369

Flights to Miamifrom €363

Flights to Los Angelesfrom €387

Flights to San Franciscofrom €385

Flights to Bostonfrom €334

Flights to Las Vegasfrom €391

Flights to Anchoragefrom €914

Flights to Washington, D.C.from €341

Flights to Dallasfrom €452

Flights to Denverfrom €325

Flights to Houstonfrom €551

Cheap flights from London to Chicago from €403

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 to Chicago departing on 23/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

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Find the cheapest flights from London to Chicago

Cheap return flights

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Icelandair flights from London to Chicago

Our best Icelandair deals on London to Chicago flight tickets

United Airlines flights from London to Chicago

Our best United Airlines deals on London to Chicago flight tickets

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Use the filters below to find and compare flights from London to Chicago that are best for you.

See travel insights to Chicago from

How to get the cheapest flight ticket from London to Chicago

What is the typical price of a round-trip flight between London and Chicago?

What is the cheapest month to fly to Chicago?

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

How far in advance should I book a flight to Chicago?

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

There is only 1 cabin class 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 January 2026, prices for London to Chicago flights are approximately 9% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from London to Chicago?

Icelandair and United Airlines are the most popular carriers operating from London to Chicago

How often are flights from London to Chicago delayed?

Historically, on average around 11% of flights between London and Chicago have experienced a delay on any given week. The average delay length over the past 12 months has been 170 minutes.

What is the most punctual flight time for London to Chicago flights?

Generally, flights departing at night tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Saturday is statistically the day of the week that experiences the fewest delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on London to Chicago flights?

According to our data, United Airlines have had the fewest delays on this route over the last 12 months, with about 5% of their flights experiencing any sort of delay.

How many flights depart from London to Chicago on average per day?

37 flights are operational daily from London to Chicago as of January 2026. The most popular departure time for this route is 12:00, with 65% of flights per day taking off in the afternoon.

How many flights depart from London to Chicago on average per week?

As of January 2026, 262 flights take off from London and land in Chicago each week. The most common flight departure day for this route is Wed, with 16% of weekly flights taking off on this day.

When to book flights from London to Chicago

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

Fastest flight time

Direct flights

Airports in Chicago

How far is London to Chicago by plane?

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

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

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

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?

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

How can momondo help me find flights 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?

An easier way to manage your Chicago trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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