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

230 flights are operational weekly from London to Chicago as of January 2026. The most popular departure day for this route is Sat, with 17% of flights per week taking off on this day.

Which airline has the best punctuality record on London to Chicago flights?

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 5% of their flights experiencing any sort of delay.

What is the most punctual flight time for London to Chicago flights?

Generally, flights departing at night tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Which airport is the most popular layover for flights between London and Chicago?

Reykjavik (KEF) was the most common stop: 52% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from London to Chicago?

Flights connecting via Reykjavik (KEF) have the shortest average one-way travel time: 11h 25m.

What day of the week experiences the fewest flight delays on this route?

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

Which layover airport offers the lowest fares from London to Chicago?

Flights via Reykjavik (KEF) offer the lowest average round-trip price of $539.

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

As of January 2026, there are 32 flights per day flying from London to Chicago. The most common time of day flights depart is 12:00PM, with 68% of flights taking off in the afternoon.

What airlines fly to Chicago?

British Airways, American Airlines and Aer Lingus are the top three most popular airlines that fly to Chicago from London according to our data. British Airways is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Chicago. Keep in mind that there are 10 different airlines that fly to Chicago on a routine basis, so you have a few additional options to choose from.

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.

Which layover airport has the shortest connection time from London to Chicago?

Reykjavik (KEF) has the shortest average layover time for this route: 1h 03m.

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

Virgin Atlantic, Delta, and Finnair are the most popular carriers operating from London to Chicago

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

Prices for flights from London to Chicago refresh daily.

How many operators does momondo search for flights from London to Chicago?

As of January 2026, there are 10 operators available to choose from for flights from London to Chicago.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Chicago.

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

The travel and health documents required for your trip to Chicago can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Chicago. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$399 Cheap Flights from London to Chicago in 2026

Q: What is the typical price of a round-trip flight between London and Chicago?

Prices are currently low for flights on this route. Typical prices usually range from $546 to $840. The lowest price recently found on this route was $538.

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from London to Chicago

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:00 pm - 11:38 pm

LGW

ORD

15h 38m1 stop

8:55 pm - 10:00 am

ORD

LGW

32h 05m2 stops

$538Multiple Airlines

Fri, Mar 6 - Wed, Mar 25

12:50 pm - 7:15 pm

LHR

ORD

12h 25m1 stop

8:35 pm - 10:25 am

ORD

LHR

7h 50mnonstop

$538British Airways

Sat, Feb 7 - Sat, Feb 14

7:50 am - 7:15 pm

LHR

ORD

17h 25m1 stop

4:01 pm - 9:30 am

ORD

LHR

11h 29m1 stop

$539British Airways

Sun, Jan 25 - Sun, Mar 1

11:55 am - 5:20 pm

LGW

ORD

11h 25m1 stop

6:30 pm - 10:55 am

ORD

LGW

10h 25m1 stop

$541Icelandair

Sun, Feb 8 - Sun, Feb 15

9:05 pm - 4:45 pm

LHR

ORD

25h 40m2 stops

7:20 pm - 4:00 pm

ORD

LHR

14h 40m1 stop

$541Scandinavian Airlines

Sun, Feb 8 - Sun, Mar 1

10:20 am - 5:55 pm

LHR

ORD

12h 35m1 stop

8:20 pm - 4:25 pm

ORD

LHR

15h 05m2 stops

$542Scandinavian Airlines

Fri, Mar 13 - Sun, Mar 15

8:30 am - 3:20 pm

LHR

ORD

12h 50m1 stop

9:05 pm - 11:15 am

ORD

LHR

8h 10mnonstop

$545United Airlines

Thu, Jan 22 - Sun, Jan 25

11:55 am - 6:20 pm

LGW

ORD

11h 25m1 stop

7:30 pm - 10:55 am

ORD

LGW

10h 25m1 stop

$547Icelandair

Mon, Mar 16 - Mon, Mar 23

6:40 pm - 12:45 pm

LGW

ORD

24h 05m1 stop

6:50 pm - 5:50 pm

ORD

LGW

17h 00m1 stop

$548SWISS

Mon, Feb 23 - Mon, Mar 2

7:10 pm - 12:45 pm

LCY

ORD

23h 35m1 stop

4:10 pm - 12:55 pm

ORD

LCY

14h 45m1 stop

$548SWISS

Wed, Feb 25 - Wed, Mar 4

United Airlines flights from London to Chicago

Our best United Airlines deals on London to Chicago flight tickets

United Airlines

Feb 7

LHR1:45 pmLondon Heathrow

32h 35m

1 stop

ORD4:20 pmChicago O'Hare Intl

Feb 14

ORD1:02 pmChicago O'Hare Intl

11h 38m

1 stop

LHR6:40 amLondon Heathrow

$538

United Airlines

Jan 22

LHR8:30 amLondon Heathrow

12h 50m

1 stop

ORD3:20 pmChicago O'Hare Intl

Jan 25

ORD9:05 pmChicago O'Hare Intl

8h 10m

LHR11:15 amLondon Heathrow

$545

United Airlines

Jan 20

LHR9:00 amLondon Heathrow

13h 20m

1 stop

ORD4:20 pmChicago O'Hare Intl

Feb 3

ORD2:30 pmChicago O'Hare Intl

12h 00m

2 stops

LHR8:30 amLondon Heathrow

$547

American Airlines flights from London to Chicago

Our best American Airlines deals on London to Chicago flight tickets

American Airlines

Feb 21

LGW12:30 pmLondon Gatwick

15h 04m

1 stop

ORD9:34 pmChicago O'Hare Intl

Feb 28

ORD9:10 amChicago O'Hare Intl

17h 50m

2 stops

LGW9:00 amLondon Gatwick

$559

American Airlines

Feb 23

LGW12:30 pmLondon Gatwick

18h 07m

2 stops

ORD12:37 amChicago O'Hare Intl

Mar 2

ORD9:55 amChicago O'Hare Intl

17h 05m

2 stops

LGW9:00 amLondon Gatwick

$560

American Airlines

Feb 7

LGW12:30 pmLondon Gatwick

18h 00m

2 stops

ORD12:30 amChicago O'Hare Intl

Feb 18

ORD2:31 pmChicago O'Hare Intl

12h 29m

1 stop

LGW9:00 amLondon Gatwick

$561

Fly from

Fly to

Route

Depart

Return

Price

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Fri 3/6

2:00 pm-11:38 pm

1 stop15h 38m

Chicago O'Hare Intl

Wed 3/25

8:55 pm-10:00 am

2 stops32h 05m

$538

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 2/7

12:50 pm-7:15 pm

1 stop12h 25m

Chicago O'Hare Intl

Sat 2/14

8:35 pm-10:25 am

Nonstop7h 50m

$538

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 1/25

7:50 am-7:15 pm

1 stop17h 25m

Chicago O'Hare Intl

Sun 3/1

4:01 pm-9:30 am

1 stop11h 29m

$539

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Sun 2/8

11:55 am-5:20 pm

1 stop11h 25m

Chicago O'Hare Intl

Sun 2/15

6:30 pm-10:55 am

1 stop10h 25m

$541

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 2/8

9:05 pm-4:45 pm

2 stops25h 40m

Chicago O'Hare Intl

Sun 3/1

7:20 pm-4:00 pm

1 stop14h 40m

$541

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 3/13

10:20 am-5:55 pm

1 stop12h 35m

Chicago O'Hare Intl

Sun 3/15

8:20 pm-4:25 pm

2 stops15h 05m

$542

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 1/22

8:30 am-3:20 pm

1 stop12h 50m

Chicago O'Hare Intl

Sun 1/25

9:05 pm-11:15 am

Nonstop8h 10m

$545

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Mon 3/16

11:55 am-6:20 pm

1 stop11h 25m

Chicago O'Hare Intl

Mon 3/23

7:30 pm-10:55 am

1 stop10h 25m

$547

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Mon 2/23

6:40 pm-12:45 pm

1 stop24h 05m

Chicago O'Hare Intl

Mon 3/2

6:50 pm-5:50 pm

1 stop17h 00m

$548

LondonChicago

LCY - ORD

LCYORD

London City

Wed 2/25

7:10 pm-12:45 pm

1 stop23h 35m

Chicago O'Hare Intl

Wed 3/4

4:10 pm-12:55 pm

1 stop14h 45m

$548

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

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

Layovers

Other information

What is the typical price of a round-trip flight between London and Chicago?

What is the cheapest month to fly to Chicago?

The month of February is, on average, the cheapest month to fly to Chicago from London, with most prices found around $578. If you’re not able to fly to Chicago in February, then November is your next best option. Flight prices from London to Chicago during November average around $580.

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

The cheapest day to depart on your flight to Chicago is on a Wednesday when prices can be found for as low as $772. This is often the case because there is less demand to fly during this day of the week. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from London to Chicago for around $885.

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

Our most recent data shows that the best time of day to fly to Chicago is in the morning. Flights from London to Chicago during this time can be as low as $820. In contrast, the most expensive time of day to depart to Chicago is in the afternoon when prices are around $914.

What is the cheapest London to Chicago flight route?

Fly from London Heathrow to Chicago O'Hare Intl for the best London - 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 when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around $725 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from London for as low as $694 on momondo.

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

There are 4 cabin classes available to choose from on London 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 to Chicago flights?

You could potentially save up to 1% on your flight if you consider stops on a London to Chicago flight.

How have London to Chicago flight prices changed over time?

As of January 2026, prices for London to Chicago flights are approximately 9% more expensive when compared to flights at the same time last year.

When to book flights from London to Chicago

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

Estimated round-trip price

Cheap London to Chicago (LON to CHI) flight deals and tips

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

Best Price Found	$636
Fastest flight time	8h 45m
Direct flights	Every day
Airports in Chicago	3 airports

The best one-way flight to Chicago from London in the past 72 hours is $636. The best round-trip flight deal from London to Chicago found on momondo in the last 72 hours is $731.

The fastest flight from London to Chicago takes 8h 45m

Direct flights go from London to Chicago every day.

There are 3 airports in Chicago. From London there are direct flights to Chicago O'Hare Intl (ORD).

Search flight deals

How far is London to Chicago by plane?
A flight from London to Chicago will travel around 3945.2 mi. Flights usually cover this in 8h 45m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from London to Chicago?
Prices for flights from London to Chicago refresh daily.
How many operators does momondo search for flights from London to Chicago?
As of January 2026, there are 10 operators available to choose from for flights from London to Chicago.
How old do you have to be to fly from London to Chicago?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Chicago.
What documentation or ID do you need to fly to Chicago?
The travel and health documents required for your trip to Chicago can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Chicago. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from London to Chicago?
momondo data reveals that the most frequently booked plane model on the route from London to Chicago is Boeing 767-300, representing 30.13% of all bookings. The subsequent popular models are Boeing 787-9 Dreamliner at 22.73%, Boeing 777 at 12.08%, and Boeing 787-10 Dreamliner at 10.24%.
What is the most popular airline from London to Chicago?
momondo data reveals that the most frequently booked airline on the route from London to Chicago is British Airways, representing 34% of all bookings. The subsequent popular airlines are American Airlines at 16%, Icelandair at 14%, and United Airlines at 11%.

Best airlines flying from London to Chicago

Compare and see reviews for airlines that fly from London to Chicago with momondo

Airline	Rating	Free Cancellation	Price
Aer Lingus	PriceFrom $446	Free Cancellation	Rating 7.2 1,434 reviews	Search Aer Lingus flights
Icelandair	PriceFrom $453	Free Cancellation	Rating 7.1 595 reviews	Search Icelandair flights
United Airlines	PriceFrom $485	Free Cancellation	Rating 7.4 9,143 reviews	Search United Airlines flights
Austrian Airlines	PriceFrom $530	Free Cancellation	Rating 7.6 890 reviews	Search Austrian Airlines flights
British Airways	PriceFrom $552	Free Cancellation	Rating 6.7 7,664 reviews	Search British Airways flights
TAP AIR PORTUGAL	PriceFrom $558	Free Cancellation	Rating 7.1 2,115 reviews	Search TAP AIR PORTUGAL flights
Iberia	PriceFrom $558	Free Cancellation	Rating 7.0 3,083 reviews	Search Iberia flights
American Airlines	PriceFrom $572	Free Cancellation	Rating 7.2 11,106 reviews	Search American Airlines flights
Finnair	PriceFrom $576	Free Cancellation	Rating 7.6 1,347 reviews	Search Finnair flights
Lufthansa	PriceFrom $720	Free Cancellation	Rating 6.8 7,709 reviews	Search Lufthansa flights

Austrian Airlines Flights From London to Chicago
Austrian Airlines flight deals from London to Chicago start from $530 round-trip. Over the 14 Austrian Airlines flights for this route in a normal week, average airfare is usually $897 round-trip - but some users have found much cheaper deals with momondo.
Finnair Flights From London to Chicago
The best Finnair deal for London to Chicago flight tickets found on momondo in the last 72 hours was $576, round-trip. It should be noted that an average Finnair flight deal for this route in this time was higher, at $733 round-trip. Finnair operates 21 flights out of London into Chicago in an average week, so prices vary by time and availability. 1,347 Finnair reviews by users on momondo have scored the airline at 7.6/10.

Merrillville

New Buffalo

Hammond

Benton Harbor

Saint Joseph

Portage

Lansing

Schererville

Valparaiso

Munster

Crown Point

Chesterton

Monticello

Porter

Griffith

Saint John

Why use momondo?

Why should I use momondo to find a flight deal from London to Chicago?

It is quick and easy to find London to Chicago flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Chicago that suits you.

Can I find flights from London to Chicago with flexible booking policies on momondo?

Yes. All flights to Chicago from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

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.

An easier way to manage your Chicago 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.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Tue 2/10

Tue 2/17

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

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

Chicago Greater Rockford Airport

Popular cities in the United States

Flights to New Yorkfrom $47

Flights to Los Angelesfrom $49

Flights to Miamifrom $50

Flights to Orlandofrom $49

Flights to San Franciscofrom $38

Flights to Las Vegasfrom $47

Flights to Washington, D.C.from $58

Flights to Bostonfrom $58

Flights to Atlantafrom $46

Flights to Dallasfrom $57

Flights to Seattlefrom $55

Flights to Denverfrom $51

Cheap flights from London to Chicago from $479

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 to Chicago departing on 5/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from London to Chicago

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

United Airlines flights from London to Chicago

Our best United Airlines deals on London to Chicago flight tickets

American Airlines flights from London to Chicago

Our best American Airlines deals on London to Chicago flight tickets

momondo Fare Finder

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

See travel insights to Chicago from

How to get the cheapest flight ticket from London to Chicago

What is the typical price of a round-trip flight between London and Chicago?

What is the cheapest month to fly to Chicago?

The month of February is, on average, the cheapest month to fly to Chicago from London, with most prices found around $578. If you’re not able to fly to Chicago in February, then November is your next best option. Flight prices from London to Chicago during November average around $580.

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 most recent data shows that the best time of day to fly to Chicago is in the morning. Flights from London to Chicago during this time can be as low as $820. In contrast, the most expensive time of day to depart to Chicago is in the afternoon when prices are around $914.

What is the cheapest London to Chicago flight route?

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

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

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

There are 4 cabin classes available to choose from on London 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 to Chicago flights?

You could potentially save up to 1% on your flight if you consider stops on a London to Chicago flight.

How have London to Chicago flight prices changed over time?

As of January 2026, prices for London to Chicago flights are approximately 9% more expensive when compared to flights at the same time last year.

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

Virgin Atlantic, Delta, and Finnair are the most popular carriers operating from London to Chicago

What airlines fly 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 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 which experiences the fewest number of 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 least number of delays on this route over the last 12 months; with about 5% of their flights experiencing any sort of delay.

Which airport is the most popular layover for flights between London and Chicago?

Reykjavik (KEF) was the most common stop: 52% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from London to Chicago?

Flights via Reykjavik (KEF) offer the lowest average round-trip price of $539.

Which layover airport has the shortest travel time from London to Chicago?

Flights connecting via Reykjavik (KEF) have the shortest average one-way travel time: 11h 25m.

Which layover airport has the shortest connection time from London to Chicago?

Reykjavik (KEF) has the shortest average layover time for this route: 1h 03m.

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

As of January 2026, there are 32 flights per day flying from London to Chicago. The most common time of day flights depart is 12:00PM, with 68% of flights taking off in the afternoon.

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

230 flights are operational weekly from London to Chicago as of January 2026. The most popular departure day for this route is Sat, with 17% of flights per week taking off on this day.

When to book flights from London to Chicago

Cheap London to Chicago (LON to CHI) flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Chicago

How far is London to Chicago by plane?

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

How many operators does momondo search for flights from London to Chicago?

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

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

What is the most popular plane model from London to Chicago?

What is the most popular airline from London to Chicago?

Best airlines flying from London to Chicago

Compare and see reviews for airlines that fly from London to Chicago with momondo

Austrian Airlines Flights From London to Chicago

Finnair Flights From London to Chicago

Traveling to a place near Chicago?