How many flights depart from London to Chicago O'Hare Intl Airport on average per week?

As of September 2025, 333 flights take off from London and land in Chicago O'Hare Intl Airport each week. The most common flight departure day for this route is Tue, with 16% of weekly flights taking off on this day.

Which airport is the most popular layover for flights between London and Chicago O'Hare Intl Airport?

Dublin (DUB) was the most common stop: 63% of momondo users choosing 1-stop flights on this route connected there.

What airlines fly to Chicago O'Hare Intl Airport?

British Airways, American Airlines and Aer Lingus are the top three most popular airlines that fly to Chicago O'Hare Intl Airport from London according to our data. British Airways is the first choice among our users, with 52% of people opting to fly with this airline when traveling to Chicago O'Hare Intl Airport. Keep in mind that there are 11 different airlines that fly to Chicago O'Hare Intl Airport on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from London to Chicago O'Hare Intl Airport?

Flights connecting via Reykjavik (KEF) have the shortest average one-way travel time: 11h 05m.

What is the cheapest airline that flies from London to Chicago O'Hare Intl?

Lufthansa, KLM, and British Airways are the most popular carriers operating from London to Chicago O'Hare Intl

Which layover airport offers the lowest fares from London to Chicago O'Hare Intl Airport?

Flights via Reykjavik (KEF) offer the lowest average round-trip price of $491.

Which layover airport has the shortest connection time from London to Chicago O'Hare Intl Airport?

Reykjavik (KEF) has the shortest average layover time for this route: 1h 05m.

How many flights depart from London to Chicago O'Hare Intl Airport on average per day?

47 flights are operational daily from London to Chicago O'Hare Intl Airport as of September 2025. The most popular departure time for this route is 2:00PM, with 52% of flights per day taking off in the afternoon.

How many operators does momondo search for flights from London to Chicago O'Hare Intl Airport?

As of September 2025, there are 11 operators available to choose from for flights from London to Chicago O'Hare Intl Airport.

How old do you have to be to fly from London to Chicago O'Hare Intl Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Chicago O'Hare Intl Airport.

What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

The travel and health documents you'll need for your trip to Chicago O'Hare Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chicago O'Hare Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$439 Cheap Flights from London to Chicago O'Hare Intl Airport in 2025/26

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One-way

Last minute

Direct

Cheap round-trip flights

2:00 pm - 7:34 amLGW-ORD

23h 34m1 stop

6:58 pm - 10:00 amORD-LGW

33h 02m1 stop

$535Multiple Airlines

Find Deal

Thu, Oct 9 - Wed, Oct 15

8:20 am - 3:45 pmLHR-ORD

13h 25m1 stop

4:28 pm - 9:40 amORD-LHR

11h 12m1 stop

$535American Airlines

Find Deal

Thu, Oct 2 - Wed, Oct 8

7:45 am - 4:35 pmLHR-ORD

14h 50m2 stops

6:00 pm - 8:20 amORD-LHR

8h 20mnonstop

$539United Airlines

Find Deal

Wed, Oct 1 - Wed, Oct 22

12:15 pm - 5:20 pmLHR-ORD

11h 05m1 stop

6:30 pm - 7:30 pmORD-LHR

19h 00m1 stop

$541Icelandair

Find Deal

Sun, Dec 14 - Thu, Jan 15

12:35 pm - 3:25 pmLHR-ORD

8h 50mnonstop

9:45 pm - 11:35 amORD-LHR

7h 50mnonstop

$542British Airways

Find Deal

Fri, Nov 7 - Mon, Nov 10

2:10 pm - 5:45 pmLHR-ORD

8h 35mnonstop

5:10 pm - 6:55 amORD-LHR

7h 45mnonstop

$544British Airways

Find Deal

Sat, Nov 1 - Sun, Nov 9

3:40 pm - 9:15 pmLGW-ORD

11h 35m1 stop

7:25 pm - 2:40 pmORD-LGW

13h 15m1 stop

$551Icelandair

Find Deal

Wed, Oct 15 - Sun, Oct 19

7:40 am - 12:00 pmLHR-ORD

9h 20mnonstop

3:45 pm - 5:55 amORD-LHR

8h 10mnonstop

$554United Airlines

Find Deal

Thu, Oct 30 - Thu, Nov 6

9:50 am - 8:05 pmLCY-ORD

16h 15m1 stop

10:35 pm - 4:40 pmORD-LCY

12h 05m1 stop

$567Lufthansa

Find Deal

Mon, Nov 24 - Sun, Nov 30

8:45 am - 2:55 pmLCY-ORD

12h 10m1 stop

10:30 pm - 4:25 pmORD-LCY

11h 55m1 stop

$577Lufthansa

Find Deal

Wed, Oct 8 - Sun, Oct 12

American Airlines flights from London to Chicago O'Hare Intl Airport

Our best American Airlines deals on London to Chicago O'Hare Intl Airport flight tickets

American Airlines

Oct 2

LHR8:20 amLondon Heathrow

13h 25m

1 stop

ORD3:45 pmChicago O'Hare Intl

Oct 8

ORD4:28 pmChicago O'Hare Intl

11h 12m

1 stop

LHR9:40 amLondon Heathrow

$535

Find similar

American Airlines

Oct 3

LHR7:40 amLondon Heathrow

14h 05m

1 stop

ORD3:45 pmChicago O'Hare Intl

Oct 6

ORD1:43 pmChicago O'Hare Intl

10h 47m

1 stop

LHR6:30 amLondon Heathrow

$536

Find similar

American Airlines

Oct 1

LGW12:20 pmLondon Gatwick

16h 52m

2 stops

ORD11:12 pmChicago O'Hare Intl

Oct 6

ORD1:43 pmChicago O'Hare Intl

12h 27m

1 stop

LGW8:10 amLondon Gatwick

$540

Find similar

Lufthansa flights from London to Chicago O'Hare Intl Airport

Our best Lufthansa deals on London to Chicago O'Hare Intl Airport flight tickets

Lufthansa

Sep 23

LHR7:30 amLondon Heathrow

16h 51m

2 stops

ORD6:21 pmChicago O'Hare Intl

Sep 30

ORD10:30 pmChicago O'Hare Intl

12h 10m

1 stop

LHR4:40 pmLondon Heathrow

$546

Find similar

Lufthansa

Sep 30

LHR11:05 amLondon Heathrow

9h 05m

ORD2:10 pmChicago O'Hare Intl

Oct 7

ORD4:00 pmChicago O'Hare Intl

8h 20m

LHR6:20 amLondon Heathrow

$554

Find similar

Lufthansa

Nov 24

LCY9:50 amLondon City

16h 15m

1 stop

ORD8:05 pmChicago O'Hare Intl

Nov 30

ORD10:35 pmChicago O'Hare Intl

12h 05m

1 stop

LCY4:40 pmLondon City

$567

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from London to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Thu 10/9

2:00 pm-7:34 am

1 stop23h 34m

Chicago O'Hare Intl

Wed 10/15

6:58 pm-10:00 am

1 stop33h 02m

$535

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 10/2

8:20 am-3:45 pm

1 stop13h 25m

Chicago O'Hare Intl

Wed 10/8

4:28 pm-9:40 am

1 stop11h 12m

$535

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 10/1

7:45 am-4:35 pm

2 stops14h 50m

Chicago O'Hare Intl

Wed 10/22

6:00 pm-8:20 am

Nonstop8h 20m

$539

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 12/14

12:15 pm-5:20 pm

1 stop11h 05m

Chicago O'Hare Intl

Thu 1/15

6:30 pm-7:30 pm

1 stop19h 00m

$541

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 11/7

12:35 pm-3:25 pm

Nonstop8h 50m

Chicago O'Hare Intl

Mon 11/10

9:45 pm-11:35 am

Nonstop7h 50m

$542

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 11/1

2:10 pm-5:45 pm

Nonstop8h 35m

Chicago O'Hare Intl

Sun 11/9

5:10 pm-6:55 am

Nonstop7h 45m

$544

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 10/15

3:40 pm-9:15 pm

1 stop11h 35m

Chicago O'Hare Intl

Sun 10/19

7:25 pm-2:40 pm

1 stop13h 15m

$551

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 10/30

7:40 am-12:00 pm

Nonstop9h 20m

Chicago O'Hare Intl

Thu 11/6

3:45 pm-5:55 am

Nonstop8h 10m

$554

LondonChicago

LCY - ORD

LCYORD

London City

Mon 11/24

9:50 am-8:05 pm

1 stop16h 15m

Chicago O'Hare Intl

Sun 11/30

10:35 pm-4:40 pm

1 stop12h 05m

$567

LondonChicago

LCY - ORD

LCYORD

London City

Wed 10/8

8:45 am-2:55 pm

1 stop12h 10m

Chicago O'Hare Intl

Sun 10/12

10:30 pm-4:25 pm

1 stop11h 55m

$577

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London to Chicago O'Hare Intl Airport

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

Layovers

Other information

What is the cheapest month to fly to Chicago O'Hare Intl Airport?

The month of September is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from London averaging around $613.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Wednesday when prices can be found for as low as $777. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from London because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $924.

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

Flying to Chicago O'Hare Intl Airport from London in the evening is the least expensive time of day to depart. momondo users have found prices as low as $695 when looking at flights departing in the evening. Try not to purchase tickets in the afternoon because they tend to be around $938. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest London to Chicago O'Hare Intl flight route?

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

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around $724 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from London for as low as $693 on momondo.

What cabin class options are available on London to Chicago O'Hare Intl flights?

There are 4 cabin classes available to choose from on London to Chicago O'Hare Intl 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 to Chicago O'Hare Intl Airport flights?

You could potentially save up to 1% on your flight if you consider stops on a London to Chicago O'Hare Intl Airport flight.

How have London to Chicago O'Hare Intl Airport flight prices changed over time?

As of September 2025, prices for London to Chicago O'Hare Intl Airport flights are approximately 8% more expensive when compared to flights at the same time last year.

When to book flights from London to Chicago O'Hare Intl Airport

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

Estimated round-trip price

Cheap London to Chicago O'Hare Intl Airport (LON to ORD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Chicago O'Hare Intl Airport

Best Price Found	$630
Fastest flight time	8h 25m
Direct flights	Every day

The best one-way flight to Chicago O'Hare Intl Airport from London in the past 72 hours is $630. The best round-trip flight deal from London to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $750.

The fastest flight from London to Chicago O'Hare Intl Airport takes 8h 25m

Direct flights go from London to Chicago O'Hare Intl Airport every day.

Search flight deals

How far is London to Chicago O'Hare Intl by plane?
A flight from London to Chicago O'Hare Intl will travel around 3950.9 mi. Flights usually cover this in 8h 35m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from London to Chicago O'Hare Intl Airport?
Prices for flights from London to Chicago O'Hare Intl Airport are updated daily.
How many operators does momondo search for flights from London to Chicago O'Hare Intl Airport?
As of September 2025, there are 11 operators available to choose from for flights from London to Chicago O'Hare Intl Airport.
How old do you have to be to fly from London to Chicago O'Hare Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Chicago O'Hare Intl Airport.
What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?
The travel and health documents you'll need for your trip to Chicago O'Hare Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chicago O'Hare Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London to Chicago O'Hare Intl Airport?
momondo data reveals that the most frequently booked plane model on the route from London to Chicago O'Hare Intl Airport is Boeing 767-300, representing 45.62% of all bookings. The subsequent popular models are Boeing 777 at 12.93%, Boeing 787-10 Dreamliner at 11.82%, and Boeing 787-9 Dreamliner at 7.24%.
What is the most popular airline from London to Chicago O'Hare Intl Airport?
Based on momondo bookings for flights between London and Chicago O'Hare Intl Airport, the leading airline is British Airways, making up 42% of the total bookings. Other popular airlines include Icelandair with 13%, United Airlines with 12%, and American Airlines with 10%.

Best airlines flying from London to Chicago O'Hare Intl Airport

Compare and see reviews for airlines that fly from London to Chicago O'Hare Intl Airport with momondo

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom $390	Free Cancellation	Rating 7.0 544 reviews	Search Icelandair flights
Aer Lingus	PriceFrom $453	Free Cancellation	Rating 7.2 1,274 reviews	Search Aer Lingus flights
Scandinavian Airlines	PriceFrom $462	Free Cancellation	Rating 7.4 1,486 reviews	Search Scandinavian Airlines flights
United Airlines	PriceFrom $485	Free Cancellation	Rating 7.4 8,924 reviews	Search United Airlines flights
British Airways	PriceFrom $553	Free Cancellation	Rating 6.7 7,363 reviews	Search British Airways flights
TAP AIR PORTUGAL	PriceFrom $558	Free Cancellation	Rating 7.1 1,975 reviews	Search TAP AIR PORTUGAL flights
American Airlines	PriceFrom $579	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Austrian Airlines	PriceFrom $584	Free Cancellation	Rating 7.6 850 reviews	Search Austrian Airlines flights
Iberia	PriceFrom $599	Free Cancellation	Rating 7.0 2,924 reviews	Search Iberia flights
Finnair	PriceFrom $607	Free Cancellation	Rating 7.6 1,324 reviews	Search Finnair flights

Austrian Airlines Flights From London to Chicago O'Hare Intl Airport
Austrian Airlines flies from London to Chicago O'Hare Intl Airport around 21 times per week, with 850 momondo users rating the airline 7.6/10. The cheapest Austrian Airlines deal from London to Chicago O'Hare Intl Airport in the last 72 hours was $584 (round-trip), much lower than the average airfare cost of $967 for Austrian Airlines flights on this route.
Finnair Flights From London to Chicago O'Hare Intl Airport
Across 1,324 Finnair reviews on momondo, the average score is 7.6/10. Finnair flies from London to Chicago O'Hare Intl Airport about 27 times each week, with ticket deals ranging from $607 to $809. Price data is based on momondo searches in the last 72 hours.

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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 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?

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.

An easier way to manage your Chicago O'Hare Intl Airport trip

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Cheap flights from London to Chicago from $535

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from London to Chicago departing on 10/9. 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

Filter for what you want

Trusted and free

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Find the cheapest flights from London to Chicago

Cheap round-trip flights

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American Airlines flights from London to Chicago O'Hare Intl Airport

Our best American Airlines deals on London to Chicago O'Hare Intl Airport flight tickets

Lufthansa flights from London to Chicago O'Hare Intl Airport

Our best Lufthansa deals on London to Chicago O'Hare Intl Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from London to Chicago O'Hare Intl Airport that are best for you.

See travel insights to Chicago from

How to get the cheapest flight ticket from London to Chicago O'Hare Intl Airport

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 O'Hare Intl Airport?

The month of September is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from London averaging around $613.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

What is the cheapest London to Chicago O'Hare Intl flight route?

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

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

What cabin class options are available on London to Chicago O'Hare Intl flights?

There are 4 cabin classes available to choose from on London to Chicago O'Hare Intl 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 to Chicago O'Hare Intl Airport flights?

You could potentially save up to 1% on your flight if you consider stops on a London to Chicago O'Hare Intl Airport flight.

How have London to Chicago O'Hare Intl Airport flight prices changed over time?

As of September 2025, prices for London to Chicago O'Hare Intl Airport flights are approximately 8% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from London to Chicago O'Hare Intl?

Lufthansa, KLM, and British Airways are the most popular carriers operating from London to Chicago O'Hare Intl

What airlines fly to Chicago O'Hare Intl Airport?

Which airport is the most popular layover for flights between London and Chicago O'Hare Intl Airport?

Dublin (DUB) was the most common stop: 63% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from London to Chicago O'Hare Intl Airport?

Flights via Reykjavik (KEF) offer the lowest average round-trip price of $491.

Which layover airport has the shortest travel time from London to Chicago O'Hare Intl Airport?

Flights connecting via Reykjavik (KEF) have the shortest average one-way travel time: 11h 05m.

Which layover airport has the shortest connection time from London to Chicago O'Hare Intl Airport?

Reykjavik (KEF) has the shortest average layover time for this route: 1h 05m.

How many flights depart from London to Chicago O'Hare Intl Airport on average per day?

47 flights are operational daily from London to Chicago O'Hare Intl Airport as of September 2025. The most popular departure time for this route is 2:00PM, with 52% of flights per day taking off in the afternoon.

How many flights depart from London to Chicago O'Hare Intl Airport on average per week?

As of September 2025, 333 flights take off from London and land in Chicago O'Hare Intl Airport each week. The most common flight departure day for this route is Tue, with 16% of weekly flights taking off on this day.

When to book flights from London to Chicago O'Hare Intl Airport

Cheap London to Chicago O'Hare Intl Airport (LON to ORD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Chicago O'Hare Intl Airport

Best Price Found

Fastest flight time

Direct flights

How far is London to Chicago O'Hare Intl by plane?

When did momondo last update prices for flights from London to Chicago O'Hare Intl Airport?

How many operators does momondo search for flights from London to Chicago O'Hare Intl Airport?

How old do you have to be to fly from London to Chicago O'Hare Intl Airport?

What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

What is the most popular plane model from London to Chicago O'Hare Intl Airport?

What is the most popular airline from London to Chicago O'Hare Intl Airport?

Best airlines flying from London to Chicago O'Hare Intl Airport

Compare and see reviews for airlines that fly from London to Chicago O'Hare Intl Airport with momondo

Austrian Airlines Flights From London to Chicago O'Hare Intl Airport

Finnair Flights From London to Chicago O'Hare Intl Airport

Traveling to a place near 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 O'Hare Intl Airport trip

We make it super easy to schedule, organize 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 Chicago