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 172 minutes.

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

As of January 2026, there are 239 flights per week flying from London Heathrow Airport to Chicago. The most common day of the week flights depart is Wed, with 18% of flights taking off on this day.

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

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

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

As of January 2026, 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 63% of flights 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.

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 Heathrow Airport to Chicago?

Prices for flights from London Heathrow Airport to Chicago were last updated today.

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 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.

€382 Cheap Flights from London Heathrow Airport to Chicago in 2026

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Find the cheapest flights from London Heathrow Airport to Chicago

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Enter your travel dates to find the best prices.

08:30 - 15:20

LHR

ORD

12h 50m1 stop

15:45 - 05:55

ORD

LHR

8h 10mdirect

€466United Airlines

Fri, 16 Jan - Sun, 18 Jan

09:00 - 16:20

LHR

ORD

13h 20m1 stop

14:30 - 08:30

ORD

LHR

12h 00m2 stops

€467United Airlines

Thu, 29 Jan - Tue, 3 Feb

08:50 - 19:15

LHR

ORD

16h 25m1 stop

18:25 - 08:15

ORD

LHR

7h 50mdirect

€468British Airways

Fri, 16 Jan - Sun, 18 Jan

08:40 - 15:55

LHR

ORD

13h 15m1 stop

16:25 - 10:40

ORD

LHR

12h 15m1 stop

€473United Airlines

Mon, 27 Apr - Thu, 30 Apr

13:25 - 19:15

LHR

ORD

11h 50m1 stop

16:49 - 10:15

ORD

LHR

11h 26m1 stop

€474British Airways

Wed, 29 Apr - Sun, 10 May

06:40 - 16:45

LHR

ORD

16h 05m1 stop

19:10 - 16:25

ORD

LHR

15h 15m2 stops

€475Scandinavian Airlines

Fri, 23 Jan - Sun, 8 Feb

08:30 - 14:50

LHR

ORD

12h 20m1 stop

16:25 - 06:45

ORD

LHR

8h 20mdirect

€478Lufthansa

Sun, 26 Apr - Thu, 30 Apr

08:30 - 14:50

LHR

ORD

12h 20m1 stop

18:10 - 08:30

ORD

LHR

8h 20mdirect

€479Lufthansa

Mon, 20 Apr - Wed, 29 Apr

06:40 - 16:45

LHR

ORD

16h 05m1 stop

19:20 - 18:50

ORD

LHR

17h 30m2 stops

€480Scandinavian Airlines

Sat, 21 Feb - Sat, 28 Feb

06:20 - 14:00

LHR

ORD

13h 40m1 stop

22:20 - 12:15

ORD

LHR

7h 55mdirect

€482British Airways

Sun, 26 Apr - Sat, 2 May

Lufthansa flights from London Heathrow Airport to Chicago

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

Lufthansa

26 Apr

LHR08:30London Heathrow

12h 20m

1 stop

ORD14:50Chicago O'Hare Intl

30 Apr

ORD16:25Chicago O'Hare Intl

8h 20m

LHR06:45London Heathrow

€478

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Lufthansa

20 Apr

LHR08:30London Heathrow

12h 20m

1 stop

ORD14:50Chicago O'Hare Intl

28 Apr

ORD16:25Chicago O'Hare Intl

8h 20m

LHR06:45London Heathrow

€479

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Lufthansa

8 Jan

LHR13:35London Heathrow

9h 25m

ORD17:00Chicago O'Hare Intl

21 Jan

ORD17:50Chicago O'Hare Intl

8h 05m

LHR07:55London Heathrow

€492

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Finnair flights from London Heathrow Airport to Chicago

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

Finnair

4 May

LHR18:10London Heathrow

29h 40m

1 stop

ORD17:50Chicago O'Hare Intl

10 May

ORD17:40Chicago O'Hare Intl

7h 40m

LHR07:20London Heathrow

€530

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Finnair

20 Apr

LHR10:20London Heathrow

13h 30m

1 stop

ORD17:50Chicago O'Hare Intl

1 May

ORD17:10Chicago O'Hare Intl

22h 30m

1 stop

LHR21:40London Heathrow

€535

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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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Fly to

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 16/1

08:30-15:20

1 stop12h 50m

Chicago O'Hare Intl

Sun 18/1

15:45-05:55

Nonstop8h 10m

€466

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 29/1

09:00-16:20

1 stop13h 20m

Chicago O'Hare Intl

Tue 3/2

14:30-08:30

2 stops12h 00m

€467

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 16/1

08:50-19:15

1 stop16h 25m

Chicago O'Hare Intl

Sun 18/1

18:25-08:15

Nonstop7h 50m

€468

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 27/4

08:40-15:55

1 stop13h 15m

Chicago O'Hare Intl

Thu 30/4

16:25-10:40

1 stop12h 15m

€473

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 29/4

13:25-19:15

1 stop11h 50m

Chicago O'Hare Intl

Sun 10/5

16:49-10:15

1 stop11h 26m

€474

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 23/1

06:40-16:45

1 stop16h 05m

Chicago O'Hare Intl

Sun 8/2

19:10-16:25

2 stops15h 15m

€475

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 26/4

08:30-14:50

1 stop12h 20m

Chicago O'Hare Intl

Thu 30/4

16:25-06:45

Nonstop8h 20m

€478

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 20/4

08:30-14:50

1 stop12h 20m

Chicago O'Hare Intl

Wed 29/4

18:10-08:30

Nonstop8h 20m

€479

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 21/2

06:40-16:45

1 stop16h 05m

Chicago O'Hare Intl

Sat 28/2

19:20-18:50

2 stops17h 30m

€480

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 26/4

06:20-14:00

1 stop13h 40m

Chicago O'Hare Intl

Sat 2/5

22:20-12:15

Nonstop7h 55m

€482

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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

Airlines

Delays

Other information

What is the cheapest month to fly to Chicago?

The cheapest month to fly to Chicago from London Heathrow Airport is in February. Flight prices, which tend to average around €502, 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 Heathrow Airport, when ticket prices are also cheap, with an average price of €507.

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

On average, the least expensive day to fly to Chicago from London Heathrow Airport is on a Thursday. momondo users have found tickets for Thursday departures for as low as €661. 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 €3,186.

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 €619 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 €592 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.

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

As of January 2026, prices for London Heathrow Airport to Chicago flights are approximately 13% more expensive 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 40m
Direct flights	Every day
Airports in Chicago	3 airports

The fastest flight from London Heathrow Airport to Chicago takes 8h 40m

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

There are 3 airports in Chicago. From London Heathrow Airport there are direct flights to 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. 8h 40m is a normal flight duration for this route.
When did momondo last update prices for flights from London Heathrow Airport to Chicago?
Prices for flights from London Heathrow Airport to Chicago were last updated today.
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 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 Heathrow Airport to Chicago?
Based on momondo bookings for flights between London Heathrow Airport and Chicago, the leading plane model is Boeing 767-300, making up 31.76% of the total bookings. Other popular models include Boeing 787-9 Dreamliner with 22.21%, Boeing 777 with 11.73%, and Boeing 787-10 Dreamliner with 10.31%.

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?

momondo does allow users to show only those flights to Chicago from London which offer a flexible booking policy as well as other useful filters and features.

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?

If you are not ready to book a flight from London to Chicago now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Chicago and let you know when they change.

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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 €283

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Flights to Miamifrom €339

Flights to Los Angelesfrom €369

Flights to Bostonfrom €297

Flights to San Franciscofrom €378

Flights to Las Vegasfrom €377

Flights to Anchoragefrom €850

Flights to Washington, D.C.from €357

Flights to Dallasfrom €447

Flights to Denverfrom €338

Flights to Houstonfrom €444

Cheap flights from London Heathrow Airport to Chicago from €410

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Big names, great deals

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Lufthansa flights from London Heathrow Airport to Chicago

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Finnair flights from London Heathrow Airport to Chicago

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

momondo Fare Finder

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

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 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.

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

As of January 2026, prices for London Heathrow Airport to Chicago flights are approximately 13% more expensive when compared to flights at the same time last year.

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

JetBlue, Austrian Airlines, and United 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 172 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 January 2026, 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 63% of flights taking off in the afternoon.

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

As of January 2026, there are 239 flights per week flying from London Heathrow Airport to Chicago. The most common day of the week flights depart is Wed, with 18% of flights taking off 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