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

The number of flights available between London Heathrow Airport and Chicago is 243 per week as of November 2025. The most frequent departure day is Sat, with 18% of weekly flights leaving on this day.

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 Heathrow Airport to Chicago on average per day?

As of November 2025, there are 34 flights per day flying from London Heathrow Airport to Chicago. The most common time of day flights depart is 12:00, with 68% of flights taking off in the afternoon.

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 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.

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

United Airlines, Austrian Airlines, and Delta are the most popular carriers operating from London Heathrow 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.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to Chicago.

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

The required travel and health documents for your Chicago trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Chicago. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$807 Cheap Flights from London Heathrow Airport to Chicago in 2025/26

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12:50 - 19:15LHR-ORD

12h 25m1 stop

17:10 - 06:55ORD-LHR

7h 45mdirect

$914British Airways

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Wed, 4 Feb - Sun, 8 Feb

09:00 - 16:20LHR-ORD

13h 20m1 stop

17:50 - 07:55ORD-LHR

8h 05mdirect

$920United Airlines

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Fri, 6 Feb - Fri, 27 Feb

09:00 - 16:20LHR-ORD

13h 20m1 stop

16:25 - 06:45ORD-LHR

8h 20mdirect

$921United Airlines

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Tue, 20 Jan - Tue, 7 Apr

13:45 - 15:55LHR-ORD

32h 10m1 stop

19:05 - 16:25ORD-LHR

15h 20m1 stop

$924United Airlines

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Sun, 19 Apr - Thu, 7 May

06:40 - 16:10LHR-ORD

15h 30m1 stop

19:15 - 19:55ORD-LHR

18h 40m2 stops

$926Scandinavian Airlines

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Sat, 2 May - Sat, 9 May

08:30 - 15:20LHR-ORD

12h 50m1 stop

15:45 - 05:55ORD-LHR

8h 10mdirect

$929United Airlines

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Tue, 13 Jan - Tue, 20 Jan

06:40 - 16:45LHR-ORD

16h 05m1 stop

10:40 - 16:00ORD-LHR

24h 20m2 stops

$931Scandinavian Airlines

Find Deal

Wed, 4 Mar - Tue, 10 Mar

06:50 - 13:10LHR-ORD

11h 20m1 stop

14:27 - 06:55ORD-LHR

10h 28m1 stop

$932United Airlines

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Wed, 18 Mar - Sun, 5 Apr

07:50 - 14:00LHR-ORD

12h 10m1 stop

16:52 - 09:30ORD-LHR

10h 38m1 stop

$935British Airways

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Wed, 10 Dec - Wed, 17 Dec

07:05 - 16:45LHR-ORD

15h 40m2 stops

10:40 - 16:00ORD-LHR

24h 20m2 stops

$937Scandinavian Airlines

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Wed, 4 Mar - Tue, 10 Mar

British Airways flights from London Heathrow Airport to Chicago

Our best British Airways deals on London Heathrow Airport to Chicago flight tickets

British Airways

4 Feb

LHR12:50London Heathrow

12h 25m

1 stop

ORD19:15Chicago O'Hare Intl

8 Feb

ORD17:10Chicago O'Hare Intl

7h 45m

LHR06:55London Heathrow

$914

Find similar

British Airways

8 Dec

LHR08:50London Heathrow

11h 10m

1 stop

ORD14:00Chicago O'Hare Intl

23 Dec

ORD15:50Chicago O'Hare Intl

10h 15m

1 stop

LHR08:05London Heathrow

$918

Find similar

British Airways

8 Dec

LHR08:50London Heathrow

11h 10m

1 stop

ORD14:00Chicago O'Hare Intl

14 Jan

ORD18:25Chicago O'Hare Intl

7h 50m

LHR08:15London Heathrow

$934

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United Airlines flights from London Heathrow Airport to Chicago

Our best United Airlines deals on London Heathrow Airport to Chicago flight tickets

United Airlines

5 Dec

LHR06:30London Heathrow

12h 40m

1 stop

ORD13:10Chicago O'Hare Intl

15 Dec

ORD12:50Chicago O'Hare Intl

12h 20m

1 stop

LHR07:10London Heathrow

$915

Find similar

United Airlines

6 Feb

LHR09:00London Heathrow

13h 20m

1 stop

ORD16:20Chicago O'Hare Intl

27 Feb

ORD17:50Chicago O'Hare Intl

8h 05m

LHR07:55London Heathrow

$920

Find similar

United Airlines

20 Jan

LHR09:00London Heathrow

13h 20m

1 stop

ORD16:20Chicago O'Hare Intl

7 Apr

ORD16:25Chicago O'Hare Intl

8h 20m

LHR06:45London Heathrow

$921

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momondo Fare Finder

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Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 4/2

12:50-19:15

1 stop12h 25m

Chicago O'Hare Intl

Sun 8/2

17:10-06:55

Nonstop7h 45m

$914

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 6/2

09:00-16:20

1 stop13h 20m

Chicago O'Hare Intl

Fri 27/2

17:50-07:55

Nonstop8h 05m

$920

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 20/1

09:00-16:20

1 stop13h 20m

Chicago O'Hare Intl

Tue 7/4

16:25-06:45

Nonstop8h 20m

$921

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 19/4

13:45-15:55

1 stop32h 10m

Chicago O'Hare Intl

Thu 7/5

19:05-16:25

1 stop15h 20m

$924

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 2/5

06:40-16:10

1 stop15h 30m

Chicago O'Hare Intl

Sat 9/5

19:15-19:55

2 stops18h 40m

$926

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 13/1

08:30-15:20

1 stop12h 50m

Chicago O'Hare Intl

Tue 20/1

15:45-05:55

Nonstop8h 10m

$929

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 4/3

06:40-16:45

1 stop16h 05m

Chicago O'Hare Intl

Tue 10/3

10:40-16:00

2 stops24h 20m

$931

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 18/3

06:50-13:10

1 stop11h 20m

Chicago O'Hare Intl

Sun 5/4

14:27-06:55

1 stop10h 28m

$932

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 10/12

07:50-14:00

1 stop12h 10m

Chicago O'Hare Intl

Wed 17/12

16:52-09:30

1 stop10h 38m

$935

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 4/3

07:05-16:45

2 stops15h 40m

Chicago O'Hare Intl

Tue 10/3

10:40-16:00

2 stops24h 20m

$937

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How to get the cheapest flight ticket from London Heathrow Airport 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

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What is the cheapest month to fly to Chicago?

If you don’t want to visit Chicago in February, then you should wait until September to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $915.

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

Our data shows that Friday is the least expensive day to fly to Chicago. Tickets to fly out on this day can be as low as $901. Flights from London Heathrow Airport to Chicago on a Saturday will generally be more expensive and average around $2,674. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our data shows that the cheapest London Heathrow Airport to Chicago flights are usually those with departure times in the morning. Our users have found flights to Chicago in the morning for as low as $1,200. Flights at midday are often more expensive, with an average ticket price of $1,224.

What is the cheapest London Heathrow to Chicago flight route?

Fly from London Heathrow to Chicago O'Hare Intl for the best London Heathrow - 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 Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around $1,118 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 Heathrow Airport for as low as $1,063 on momondo.

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

There are 2 cabin classes available to choose from on London Heathrow to Chicago 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 flights?

You could potentially save up to 11% on your flight if you consider stops on a London Heathrow Airport to Chicago flight.

How have London Heathrow Airport to Chicago flight prices changed over time?

As of November 2025, prices for London Heathrow Airport to Chicago flights are approximately 1% cheaper when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Chicago

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

Estimated return price

Cheap London Heathrow Airport to Chicago (LHR to CHI) flight deals and tips

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

Fastest flight time	9h 20m
Direct flights	Every day
Airports in Chicago	1 airport

The fastest flight from London Heathrow Airport to Chicago takes 9h 20m

Direct flights go from London Heathrow Airport to Chicago every day.

There is 1 airport near Chicago: Chicago O'Hare Intl (ORD)

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How far is London Heathrow to Chicago by plane?
A flight from London Heathrow to Chicago will travel around 6330.3 km. Flights usually cover this in 8h 25m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from London Heathrow Airport to Chicago?
Prices for flights from London Heathrow Airport to Chicago are updated daily.
How old do you have to be to fly from London Heathrow Airport to Chicago?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to Chicago.
What documentation or ID do you need to fly to Chicago?
The required travel and health documents for your Chicago trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Chicago. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from London Heathrow Airport to Chicago?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from London Heathrow Airport to Chicago is Boeing 767-300 (40.86% of total bookings). The next most popular plane models are Boeing 777 (14.21%), Boeing 787-10 Dreamliner (14.21%), and Boeing 787-9 Dreamliner (8.84%).

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?

All flight searches from London to Chicago on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight 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?

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Find better results for your trip to the United States

Fly into one of these airports located in Chicago

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Chicago O'Hare Intl Airport

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Cheap flights from London Heathrow Airport to Chicago from $831

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 5/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Filter for what you want

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Find the cheapest flights from London Heathrow Airport to Chicago

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British Airways flights from London Heathrow Airport to Chicago

Our best British Airways deals on London Heathrow Airport to Chicago flight tickets

United Airlines flights from London Heathrow Airport to Chicago

Our best United Airlines deals on London Heathrow Airport to Chicago flight tickets

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

See travel insights to Chicago from

How to get the cheapest flight ticket from London Heathrow Airport 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 cheapest month to fly to Chicago?

If you don’t want to visit Chicago in February, then you should wait until September to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $915.

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

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

Our data shows that the cheapest London Heathrow Airport to Chicago flights are usually those with departure times in the morning. Our users have found flights to Chicago in the morning for as low as $1,200. Flights at midday are often more expensive, with an average ticket price of $1,224.

What is the cheapest London Heathrow to Chicago flight route?

Fly from London Heathrow to Chicago O'Hare Intl for the best London Heathrow - Chicago flight prices

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

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

There are 2 cabin classes available to choose from on London Heathrow to Chicago 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 flights?

You could potentially save up to 11% on your flight if you consider stops on a London Heathrow Airport to Chicago flight.

How have London Heathrow Airport to Chicago flight prices changed over time?

As of November 2025, prices for London Heathrow Airport to Chicago flights are approximately 1% cheaper when compared to flights at the same time last year.

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

United Airlines, Austrian Airlines, and Delta are the most popular carriers operating from London Heathrow 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 Heathrow Airport to Chicago on average per day?

As of November 2025, there are 34 flights per day flying from London Heathrow Airport to Chicago. The most common time of day flights depart is 12:00, with 68% of flights taking off in the afternoon.

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

The number of flights available between London Heathrow Airport and Chicago is 243 per week as of November 2025. The most frequent departure day is Sat, with 18% of weekly flights leaving on this day.

When to book flights from London Heathrow Airport to Chicago

Cheap London Heathrow Airport to Chicago (LHR to CHI) flight deals and tips

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

Fastest flight time

Direct flights

Airports in Chicago

How far is London Heathrow to Chicago by plane?

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

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

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

What is the most popular plane model from London Heathrow Airport 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