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.

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

British Airways, Delta, 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 168 minutes.

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

33 flights are operational daily from London to Chicago as of November 2025. The most popular departure time for this route is 12:00, with 67% of flights per day taking off in the afternoon.

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.

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

As of November 2025, 233 flights take off from London and land in Chicago each week. The most common flight departure day for this route is Sat, with 18% of weekly flights taking off on this day.

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.

€390 Cheap Flights from London to Chicago in 2025/26

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 €522 to €798. The lowest price recently found on this route was €487.

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10:20 - 16:45LHR-ORD

12h 25m1 stop

19:20 - 18:30ORD-LHR

17h 10m1 stop

€487Scandinavian Airlines

Find Deal

Mon, 12 Jan - Sat, 17 Jan

10:20 - 16:45LHR-ORD

12h 25m1 stop

19:10 - 18:50ORD-LHR

17h 40m2 stops

€491Scandinavian Airlines

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Mon, 12 Jan - Sun, 18 Jan

10:20 - 16:45LHR-ORD

12h 25m1 stop

19:20 - 16:00ORD-LHR

14h 40m1 stop

€505Scandinavian Airlines

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Mon, 12 Jan - Fri, 16 Jan

07:05 - 16:10LHR-ORD

15h 05m2 stops

19:15 - 17:40ORD-LHR

16h 25m1 stop

€510Scandinavian Airlines

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Wed, 15 Apr - Sat, 25 Apr

12:15 - 17:20LHR-ORD

11h 05m1 stop

18:30 - 19:30ORD-LHR

19h 00m1 stop

€512Icelandair

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Wed, 10 Dec - Tue, 16 Dec

20:35 - 17:20LHR-ORD

26h 45m1 stop

18:30 - 10:50ORD-LHR

10h 20m1 stop

€512Icelandair

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Mon, 15 Dec - Wed, 21 Jan

07:05 - 16:10LHR-ORD

15h 05m2 stops

19:15 - 18:50ORD-LHR

17h 35m2 stops

€513Scandinavian Airlines

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Wed, 15 Apr - Sat, 25 Apr

18:30 - 14:45LHR-ORD

26h 15m1 stop

19:10 - 15:30ORD-LHR

14h 20m1 stop

€514TAP AIR PORTUGAL

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Sat, 6 Dec - Wed, 10 Dec

15:35 - 16:55LHR-ORD

31h 20m2 stops

19:10 - 16:25ORD-LHR

15h 15m2 stops

€517Scandinavian Airlines

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Sat, 7 Feb - Sun, 15 Feb

21:05 - 16:45LHR-ORD

25h 40m2 stops

19:20 - 18:50ORD-LHR

17h 30m2 stops

€520Scandinavian Airlines

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Thu, 4 Dec - Mon, 8 Dec

British Airways flights from London to Chicago

Our best British Airways deals on London to Chicago flight tickets

British Airways

16 Dec

LHR20:45London Heathrow

23h 15m

1 stop

ORD14:00Chicago O'Hare Intl

22 Jan

ORD08:12Chicago O'Hare Intl

17h 08m

1 stop

LHR07:20London Heathrow

€576

Find similar

British Airways

8 Dec

LHR12:35London Heathrow

8h 50m

ORD15:25Chicago O'Hare Intl

13 Dec

ORD20:40Chicago O'Hare Intl

16h 20m

1 stop

LHR19:00London Heathrow

€671

Find similar

British Airways

7 Dec

LHR07:30London Heathrow

13h 25m

1 stop

ORD14:55Chicago O'Hare Intl

13 Dec

ORD20:40Chicago O'Hare Intl

16h 20m

1 stop

LHR19:00London Heathrow

€689

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Icelandair flights from London to Chicago

Our best Icelandair deals on London to Chicago flight tickets

Icelandair

10 Dec

LHR12:15London Heathrow

11h 05m

1 stop

ORD17:20Chicago O'Hare Intl

16 Dec

ORD18:30Chicago O'Hare Intl

19h 00m

1 stop

LHR19:30London Heathrow

€512

Find similar

Icelandair

15 Dec

LHR20:35London Heathrow

26h 45m

1 stop

ORD17:20Chicago O'Hare Intl

21 Jan

ORD18:30Chicago O'Hare Intl

10h 20m

1 stop

LHR10:50London Heathrow

€512

Find similar

Icelandair

14 Apr

LHR13:05London Heathrow

11h 10m

1 stop

ORD18:15Chicago O'Hare Intl

23 Apr

ORD19:25Chicago O'Hare Intl

18h 55m

1 stop

LHR20:20London Heathrow

€525

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 12/1

10:20-16:45

1 stop12h 25m

Chicago O'Hare Intl

Sat 17/1

19:20-18:30

1 stop17h 10m

€487

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 12/1

10:20-16:45

1 stop12h 25m

Chicago O'Hare Intl

Sun 18/1

19:10-18:50

2 stops17h 40m

€491

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 12/1

10:20-16:45

1 stop12h 25m

Chicago O'Hare Intl

Fri 16/1

19:20-16:00

1 stop14h 40m

€505

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 15/4

07:05-16:10

2 stops15h 05m

Chicago O'Hare Intl

Sat 25/4

19:15-17:40

1 stop16h 25m

€510

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 10/12

12:15-17:20

1 stop11h 05m

Chicago O'Hare Intl

Tue 16/12

18:30-19:30

1 stop19h 00m

€512

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 15/12

20:35-17:20

1 stop26h 45m

Chicago O'Hare Intl

Wed 21/1

18:30-10:50

1 stop10h 20m

€512

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 15/4

07:05-16:10

2 stops15h 05m

Chicago O'Hare Intl

Sat 25/4

19:15-18:50

2 stops17h 35m

€513

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 6/12

18:30-14:45

1 stop26h 15m

Chicago O'Hare Intl

Wed 10/12

19:10-15:30

1 stop14h 20m

€514

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 7/2

15:35-16:55

2 stops31h 20m

Chicago O'Hare Intl

Sun 15/2

19:10-16:25

2 stops15h 15m

€517

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 4/12

21:05-16:45

2 stops25h 40m

Chicago O'Hare Intl

Mon 8/12

19:20-18:50

2 stops17h 30m

€520

Flights are sorted by cheapest return flights first.

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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 €503, 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 September to fly from London, when ticket prices are also cheap, with an average price of €506.

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 €674. 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 €3,250.

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 €636 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 €605 on momondo.

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

There are 2 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 November 2025, prices for London to Chicago flights are approximately 59% 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	8h 25m
Direct flights	Every day
Airports in Chicago	1 airport

The fastest flight from London to Chicago takes 8h 25m

Direct flights go from London to Chicago every day.

There is 1 airport near Chicago: 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 11h 05m.
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 (43.38% of total bookings). The next most popular plane models are Boeing 787-10 Dreamliner (14.40%), Boeing 777 (13.79%), and Boeing 787-9 Dreamliner (5.20%).

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 €373

Flights to Miamifrom €392

Flights to Los Angelesfrom €409

Flights to San Franciscofrom €388

Flights to Bostonfrom €307

Flights to Las Vegasfrom €380

Flights to Anchoragefrom €840

Flights to Washington, D.C.from €344

Flights to Dallasfrom €471

Flights to Denverfrom €472

Flights to Tampafrom €472

Cheap flights from London to Chicago from €466

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 16/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

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Find the cheapest flights from London to Chicago

Cheap return flights

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British Airways flights from London to Chicago

Our best British Airways deals on London to Chicago flight tickets

Icelandair flights from London to Chicago

Our best Icelandair 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

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?

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

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?

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

There are 2 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 November 2025, prices for London to Chicago flights are approximately 59% more expensive when compared to flights at the same time last year.

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

British Airways, Delta, 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 168 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?

33 flights are operational daily from London to Chicago as of November 2025. The most popular departure time for this route is 12:00, with 67% of flights per day taking off in the afternoon.

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

As of November 2025, 233 flights take off from London and land in Chicago each week. The most common flight departure day for this route is Sat, with 18% 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