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

Austrian Airlines, Delta, and United Airlines are the most popular carriers operating from London to Chicago

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

34 flights are operational daily from London to Chicago as of February 2026. The most popular departure time for this route is 11:00, with 58% of flights per day taking off in the afternoon.

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

As of February 2026, 238 flights take off from London and land in Chicago each week. The most common flight departure day for this route is Sat, with 19% of weekly flights taking off on this day.

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?

Thursday 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 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.

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.

€379 Cheap Flights from London to Chicago in 2026

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Find the cheapest flights from London to Chicago

Round-trip

One-way

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Cheap return flights

Enter your travel dates to find the best prices.

07:05 - 16:45

LHR

ORD

15h 40m

2 stops

20:20 - 16:00

ORD

LHR

14h 40m

1 stop

€456Scandinavian Airlines

Mon, 2 Mar - Mon, 16 Mar

12:15 - 17:20

LHR

ORD

11h 05m

1 stop

18:30 - 19:30

ORD

LHR

19h 00m

1 stop

€464Icelandair

Thu, 19 Feb - Mon, 23 Feb

20:35 - 17:20

LHR

ORD

26h 45m

1 stop

19:30 - 10:50

ORD

LHR

10h 20m

1 stop

€466Icelandair

Mon, 2 Mar - Tue, 10 Mar

20:35 - 17:20

LHR

ORD

26h 45m

1 stop

19:30 - 10:50

ORD

LHR

10h 20m

1 stop

€467Icelandair

Mon, 2 Mar - Tue, 10 Mar

12:15 - 17:20

LHR

ORD

11h 05m

1 stop

19:30 - 19:30

ORD

LHR

19h 00m

1 stop

€468Icelandair

Tue, 3 Mar - Wed, 11 Mar

07:05 - 16:45

LHR

ORD

15h 40m

2 stops

20:20 - 18:50

ORD

LHR

17h 30m

2 stops

€469Scandinavian Airlines

Mon, 2 Mar - Mon, 9 Mar

20:35 - 17:20

LHR

ORD

26h 45m

1 stop

18:30 - 19:30

ORD

LHR

19h 00m

1 stop

€470Icelandair

Mon, 23 Feb - Sun, 1 Mar

08:00 - 16:00

LHR

ORD

14h 00m

1 stop

18:00 - 12:45

ORD

LHR

12h 45m

1 stop

€477TAP AIR PORTUGAL

Fri, 1 May - Sun, 10 May

13:05 - 18:15

LHR

ORD

11h 10m

1 stop

19:25 - 11:55

ORD

LHR

10h 30m

1 stop

€478Icelandair

Thu, 16 Apr - Tue, 21 Apr

08:00 - 16:00

LHR

ORD

14h 00m

1 stop

18:00 - 12:45

ORD

LHR

12h 45m

1 stop

€481TAP AIR PORTUGAL

Fri, 1 May - Sun, 10 May

Scandinavian Airlines flights from London to Chicago

Our best Scandinavian Airlines deals on London to Chicago flight tickets

Scandinavian Airlines

2 Mar

LHR07:05London Heathrow

15h 40m

2 stops

ORD16:45Chicago O'Hare Intl

16 Mar

ORD20:20Chicago O'Hare Intl

14h 40m

1 stop

LHR16:00London Heathrow

€456

Scandinavian Airlines

2 Mar

LHR07:05London Heathrow

15h 40m

2 stops

ORD16:45Chicago O'Hare Intl

9 Mar

ORD20:20Chicago O'Hare Intl

17h 30m

2 stops

LHR18:50London Heathrow

€469

Scandinavian Airlines

2 Mar

LHR06:40London Heathrow

16h 05m

1 stop

ORD16:45Chicago O'Hare Intl

8 Mar

ORD20:20Chicago O'Hare Intl

15h 05m

2 stops

LHR16:25London Heathrow

€482

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

19h 00m

1 stop

LHR19:30London Heathrow

€464

Icelandair

2 Mar

LHR20:35London Heathrow

26h 45m

1 stop

ORD17:20Chicago O'Hare Intl

10 Mar

ORD19:30Chicago O'Hare Intl

10h 20m

1 stop

LHR10:50London Heathrow

€466

Icelandair

2 Mar

LHR20:35London Heathrow

26h 45m

1 stop

ORD17:20Chicago O'Hare Intl

10 Mar

ORD19:30Chicago O'Hare Intl

10h 20m

1 stop

LHR10:50London Heathrow

€467

Fly from

Fly to

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 2/3

07:05-16:45

2 stops15h 40m

Chicago O'Hare Intl

Mon 16/3

20:20-16:00

1 stop14h 40m

€456

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 19/2

12:15-17:20

1 stop11h 05m

Chicago O'Hare Intl

Mon 23/2

18:30-19:30

1 stop19h 00m

€464

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 2/3

20:35-17:20

1 stop26h 45m

Chicago O'Hare Intl

Tue 10/3

19:30-10:50

1 stop10h 20m

€466

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 2/3

20:35-17:20

1 stop26h 45m

Chicago O'Hare Intl

Tue 10/3

19:30-10:50

1 stop10h 20m

€467

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 3/3

12:15-17:20

1 stop11h 05m

Chicago O'Hare Intl

Wed 11/3

19:30-19:30

1 stop19h 00m

€468

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 2/3

07:05-16:45

2 stops15h 40m

Chicago O'Hare Intl

Mon 9/3

20:20-18:50

2 stops17h 30m

€469

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 23/2

20:35-17:20

1 stop26h 45m

Chicago O'Hare Intl

Sun 1/3

18:30-19:30

1 stop19h 00m

€470

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 1/5

08:00-16:00

1 stop14h 00m

Chicago O'Hare Intl

Sun 10/5

18:00-12:45

1 stop12h 45m

€477

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 16/4

13:05-18:15

1 stop11h 10m

Chicago O'Hare Intl

Tue 21/4

19:25-11:55

1 stop10h 30m

€478

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 1/5

08:00-16:00

1 stop14h 00m

Chicago O'Hare Intl

Sun 10/5

18:00-12:45

1 stop12h 45m

€481

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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 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 €488, 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 €489.

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 €655. 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 €3,158.

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 €612 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 €585 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 February 2026, prices for London to Chicago flights are approximately 24% 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	€1,004
Fastest flight time	9h 00m
Direct flights	Every day
Airports in Chicago	3 airports

The best flight deal from London to Chicago found on momondo in the last 72 hours is €1,004

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 (25.96% of total bookings). The next most popular plane models are Boeing 787-9 Dreamliner (24.28%), Boeing 777 (13.57%), and Boeing 787-10 Dreamliner (10.61%).

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 €273

Flights to Orlandofrom €377

Flights to Miamifrom €380

Flights to Los Angelesfrom €392

Flights to San Franciscofrom €386

Flights to Bostonfrom €340

Flights to Las Vegasfrom €400

Flights to Anchoragefrom €819

Flights to Washington, D.C.from €342

Flights to Dallasfrom €462

Flights to Denverfrom €338

Flights to Houstonfrom €563

Cheap flights from London to Chicago from €411

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 16/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Big names, great deals

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Find the cheapest flights from London to Chicago

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Scandinavian Airlines flights from London to Chicago

Our best Scandinavian Airlines 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

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 February 2026, prices for London to Chicago flights are approximately 24% more expensive when compared to flights at the same time last year.

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

Austrian Airlines, 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 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?

Thursday 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?

34 flights are operational daily from London to Chicago as of February 2026. The most popular departure time for this route is 11:00, with 58% of flights per day taking off in the afternoon.

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

As of February 2026, 238 flights take off from London and land in Chicago each week. The most common flight departure day for this route is Sat, with 19% 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

Best price found

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