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 67% 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 is the cheapest airline that flies from London Heathrow to Chicago?

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

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 week?

The number of flights available between London Heathrow Airport and Chicago is 242 per week as of November 2025. The most frequent departure day is Wed, with 18% of weekly flights leaving 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.

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.

$817 Cheap Flights from London Heathrow Airport to Chicago in 2025/26

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17:30 - 16:55LHR-ORD

29h 25m2 stops

19:20 - 16:25ORD-LHR

15h 05m2 stops

$864Scandinavian Airlines

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Sat, 21 Feb - Mon, 2 Mar

06:40 - 16:45LHR-ORD

16h 05m1 stop

19:10 - 09:20ORD-LHR

32h 10m1 stop

$867Scandinavian Airlines

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Mon, 8 Dec - Sun, 1 Feb

19:30 - 16:45LHR-ORD

27h 15m1 stop

19:10 - 17:40ORD-LHR

16h 30m1 stop

$870Scandinavian Airlines

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Thu, 25 Dec - Sun, 18 Jan

06:40 - 16:45LHR-ORD

16h 05m2 stops

19:20 - 17:40ORD-LHR

16h 20m1 stop

$873Scandinavian Airlines

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Sun, 7 Dec - Sat, 17 Jan

10:35 - 16:45LHR-ORD

36h 10m2 stops

19:20 - 16:00ORD-LHR

14h 40m1 stop

$876Scandinavian Airlines

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Wed, 24 Dec - Mon, 19 Jan

17:30 - 16:45LHR-ORD

29h 15m2 stops

19:20 - 16:25ORD-LHR

15h 05m2 stops

$881Scandinavian Airlines

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Wed, 24 Dec - Thu, 22 Jan

07:05 - 16:45LHR-ORD

39h 40m2 stops

19:20 - 18:50ORD-LHR

17h 30m2 stops

$882Scandinavian Airlines

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Thu, 25 Dec - Thu, 22 Jan

06:40 - 16:10LHR-ORD

15h 30m1 stop

19:15 - 09:20ORD-LHR

32h 05m1 stop

$893Scandinavian Airlines

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Wed, 8 Apr - Sat, 18 Apr

11:10 - 10:02LHR-ORD

28h 52m1 stop

15:45 - 05:55ORD-LHR

8h 10mdirect

$896United Airlines

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Sat, 6 Dec - Sun, 7 Dec

06:40 - 16:45LHR-ORD

16h 05m1 stop

19:20 - 16:00ORD-LHR

14h 40m1 stop

$898Scandinavian Airlines

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Mon, 8 Dec - Fri, 16 Jan

TAP AIR PORTUGAL flights from London Heathrow Airport to Chicago

Our best TAP AIR PORTUGAL deals on London Heathrow Airport to Chicago flight tickets

TAP AIR PORTUGAL

26 Dec

LHR06:00London Heathrow

15h 25m

1 stop

ORD15:25Chicago O'Hare Intl

4 Jan

ORD20:25Chicago O'Hare Intl

20h 15m

1 stop

LHR22:40London Heathrow

$1,004

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TAP AIR PORTUGAL

22 Nov

LHR18:30London Heathrow

26h 15m

1 stop

ORD14:45Chicago O'Hare Intl

6 Dec

ORD16:35Chicago O'Hare Intl

23h 00m

3 stops

LHR21:35London Heathrow

$1,436

Find similar

TAP AIR PORTUGAL

23 Nov

LHR06:00London Heathrow

14h 45m

1 stop

ORD14:45Chicago O'Hare Intl

2 Dec

ORD16:25Chicago O'Hare Intl

23h 10m

3 stops

LHR21:35London Heathrow

$1,443

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Icelandair flights from London Heathrow Airport to Chicago

Our best Icelandair deals on London Heathrow Airport to Chicago flight tickets

Icelandair

8 Dec

LHR20:35London Heathrow

26h 45m

1 stop

ORD17:20Chicago O'Hare Intl

13 Jan

ORD18:30Chicago O'Hare Intl

10h 20m

1 stop

LHR10:50London Heathrow

$912

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Icelandair

9 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

$913

Find similar

Icelandair

8 Dec

LHR20:35London Heathrow

26h 45m

1 stop

ORD17:20Chicago O'Hare Intl

15 Dec

ORD18:30Chicago O'Hare Intl

10h 20m

1 stop

LHR10:50London Heathrow

$915

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momondo Fare Finder

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

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Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 21/2

17:30-16:55

2 stops29h 25m

Chicago O'Hare Intl

Mon 2/3

19:20-16:25

2 stops15h 05m

$864

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 8/12

06:40-16:45

1 stop16h 05m

Chicago O'Hare Intl

Sun 1/2

19:10-09:20

1 stop32h 10m

$867

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 25/12

19:30-16:45

1 stop27h 15m

Chicago O'Hare Intl

Sun 18/1

19:10-17:40

1 stop16h 30m

$870

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 7/12

06:40-16:45

2 stops16h 05m

Chicago O'Hare Intl

Sat 17/1

19:20-17:40

1 stop16h 20m

$873

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 24/12

10:35-16:45

2 stops36h 10m

Chicago O'Hare Intl

Mon 19/1

19:20-16:00

1 stop14h 40m

$876

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 24/12

17:30-16:45

2 stops29h 15m

Chicago O'Hare Intl

Thu 22/1

19:20-16:25

2 stops15h 05m

$881

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 25/12

07:05-16:45

2 stops39h 40m

Chicago O'Hare Intl

Thu 22/1

19:20-18:50

2 stops17h 30m

$882

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 8/4

06:40-16:10

1 stop15h 30m

Chicago O'Hare Intl

Sat 18/4

19:15-09:20

1 stop32h 05m

$893

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 6/12

11:10-10:02

1 stop28h 52m

Chicago O'Hare Intl

Sun 7/12

15:45-05:55

Nonstop8h 10m

$896

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 8/12

06:40-16:45

1 stop16h 05m

Chicago O'Hare Intl

Fri 16/1

19:20-16:00

1 stop14h 40m

$898

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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

Prices

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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 $922.

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 $912. Flights from London Heathrow Airport to Chicago on a Saturday will generally be more expensive and average around $2,709. 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 $1,216. Flights at midday are often more expensive, with an average ticket price of $1,240.

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 $1,130 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 $1,068 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 39% 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	8h 35m
Direct flights	Every day
Airports in Chicago	1 airport

The fastest flight from London Heathrow Airport to Chicago takes 8h 35m

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 11h 05m, 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 (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?

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?

Price alerts on flights to Chicago from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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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

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TAP AIR PORTUGAL flights from London Heathrow Airport to Chicago

Our best TAP AIR PORTUGAL 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 $922.

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 $1,216. Flights at midday are often more expensive, with an average ticket price of $1,240.

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 39% 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?

Delta, Finnair, and Austrian Airlines 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 67% 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 242 per week as of November 2025. The most frequent departure day is Wed, 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