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.

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.

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 39 flights per day flying from London Heathrow Airport to Chicago. The most common time of day flights depart is 12:00, with 65% of flights taking off in the afternoon.

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

Icelandair, JetBlue, and Delta are the most popular carriers operating from London Heathrow to Chicago

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

As of January 2026, there are 277 flights per week flying from London Heathrow Airport to Chicago. The most common day of the week flights depart is Sat, with 16% of flights taking off on this day.

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.

€380 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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Cheap return flights

Enter your travel dates to find the best prices.

09:50 - 20:04

LHR

ORD

16h 14m

2 stops

11:21 - 06:25

ORD

LHR

13h 04m

1 stop

€445British Airways

Wed, 4 Feb - Mon, 4 May

12:15 - 17:20

LHR

ORD

11h 05m

1 stop

18:30 - 19:30

ORD

LHR

19h 00m

1 stop

€446Icelandair

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

€448Icelandair

Mon, 2 Mar - Sun, 8 Mar

08:50 - 20:04

LHR

ORD

17h 14m

2 stops

19:05 - 09:05

ORD

LHR

8h 00mdirect

€453British Airways

Wed, 4 Feb - Mon, 4 May

07:50 - 14:00

LHR

ORD

12h 10m

1 stop

21:35 - 10:25

ORD

LHR

7h 50mdirect

€456British Airways

Wed, 4 Mar - Tue, 10 Mar

07:50 - 19:15

LHR

ORD

17h 25m

1 stop

16:10 - 09:40

ORD

LHR

11h 30m

1 stop

€456British Airways

Mon, 16 Feb - Tue, 24 Feb

07:50 - 19:15

LHR

ORD

17h 25m

1 stop

16:10 - 11:15

ORD

LHR

13h 05m

1 stop

€459British Airways

Sun, 15 Feb - Tue, 24 Feb

09:00 - 17:20

LHR

ORD

13h 20m

1 stop

16:45 - 05:55

ORD

LHR

8h 10mdirect

€460United Airlines

Tue, 10 Mar - Tue, 17 Mar

07:40 - 14:10

LHR

ORD

12h 30m

1 stop

15:45 - 05:55

ORD

LHR

8h 10mdirect

€461Lufthansa

Thu, 19 Feb - Fri, 27 Feb

08:30 - 15:20

LHR

ORD

12h 50m

1 stop

17:50 - 07:55

ORD

LHR

8h 05mdirect

€462Lufthansa

Tue, 17 Feb - Sun, 1 Mar

Icelandair flights from London Heathrow Airport to Chicago

Our best Icelandair deals on London Heathrow Airport 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

€446

Icelandair

2 Mar

LHR20:35London Heathrow

26h 45m

1 stop

ORD17:20Chicago O'Hare Intl

8 Mar

ORD19:30Chicago O'Hare Intl

10h 20m

1 stop

LHR10:50London Heathrow

€448

Icelandair

16 Feb

LHR20:35London Heathrow

26h 45m

1 stop

ORD17:20Chicago O'Hare Intl

1 Mar

ORD18:30Chicago O'Hare Intl

10h 20m

1 stop

LHR10:50London Heathrow

€462

United Airlines flights from London Heathrow Airport to Chicago

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

United Airlines

6 Feb

LHR09:00London Heathrow

13h 20m

1 stop

ORD16:20Chicago O'Hare Intl

27 Feb

ORD15:45Chicago O'Hare Intl

8h 10m

LHR05:55London Heathrow

€456

United Airlines

10 Mar

LHR09:00London Heathrow

13h 20m

1 stop

ORD17:20Chicago O'Hare Intl

17 Mar

ORD16:45Chicago O'Hare Intl

8h 10m

LHR05:55London Heathrow

€460

United Airlines

19 Feb

LHR06:30London Heathrow

12h 55m

1 stop

ORD13:25Chicago O'Hare Intl

23 Feb

ORD21:15Chicago O'Hare Intl

8h 00m

LHR11:15London Heathrow

€468

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 4/2

09:50-20:04

2 stops16h 14m

Chicago O'Hare Intl

Mon 4/5

11:21-06:25

1 stop13h 04m

€445

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

€446

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 2/3

20:35-17:20

1 stop26h 45m

Chicago O'Hare Intl

Sun 8/3

19:30-10:50

1 stop10h 20m

€448

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 4/2

08:50-20:04

2 stops17h 14m

Chicago O'Hare Intl

Mon 4/5

19:05-09:05

Nonstop8h 00m

€453

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 4/3

07:50-14:00

1 stop12h 10m

Chicago O'Hare Intl

Tue 10/3

21:35-10:25

Nonstop7h 50m

€456

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 16/2

07:50-19:15

1 stop17h 25m

Chicago O'Hare Intl

Tue 24/2

16:10-09:40

1 stop11h 30m

€456

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 15/2

07:50-19:15

1 stop17h 25m

Chicago O'Hare Intl

Tue 24/2

16:10-11:15

1 stop13h 05m

€459

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 10/3

09:00-17:20

1 stop13h 20m

Chicago O'Hare Intl

Tue 17/3

16:45-05:55

Nonstop8h 10m

€460

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 19/2

07:40-14:10

1 stop12h 30m

Chicago O'Hare Intl

Fri 27/2

15:45-05:55

Nonstop8h 10m

€461

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 17/2

08:30-15:20

1 stop12h 50m

Chicago O'Hare Intl

Sun 1/3

17:50-07:55

Nonstop8h 05m

€462

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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 €495, 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 €503.

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 €656. 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 €3,163.

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 €613 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 €587 on momondo.

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

There is only 1 cabin class 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 0% 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 00m
Direct flights	Every day
Airports in Chicago	3 airports

The fastest flight from London Heathrow Airport to Chicago takes 9h 00m

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. 9h 00m 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 26.56% of the total bookings. Other popular models include Boeing 787-9 Dreamliner with 23.77%, Boeing 777 with 13.14%, and Boeing 787-10 Dreamliner with 10.25%.

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 €272

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Flights to Los Angelesfrom €385

Flights to San Franciscofrom €390

Flights to Bostonfrom €334

Flights to Las Vegasfrom €389

Flights to Anchoragefrom €675

Flights to Washington, D.C.from €338

Flights to Dallasfrom €479

Flights to Denverfrom €325

Flights to Houstonfrom €493

Cheap flights from London Heathrow Airport to Chicago from €402

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Big names, great deals

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Find the cheapest flights from London Heathrow Airport to Chicago

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Icelandair flights from London Heathrow Airport to Chicago

Our best Icelandair 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

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?

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

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

There is only 1 cabin class 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 0% cheaper when compared to flights at the same time last year.

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

Icelandair, JetBlue, 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 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?

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 39 flights per day flying from London Heathrow Airport to Chicago. The most common time of day flights depart is 12:00, with 65% 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 277 flights per week flying from London Heathrow Airport to Chicago. The most common day of the week flights depart is Sat, with 16% 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