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

388 flights are operational weekly from Chicago to London as of September 2025. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.

What airlines fly to London?

British Airways, Iberia and United Airlines are the top three most popular airlines that fly to London from Chicago according to our data. British Airways is the first choice among our users, with 50% of people opting to fly with this airline when traveling to London. Keep in mind that there are 16 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

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

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

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

Flights connecting via Amsterdam (AMS) have the shortest average one-way travel time: 9h 53m.

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

Reykjavik (KEF) was the most common stop: 41% of momondo users choosing 1-stop flights on this route connected there.

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

As of September 2025, there are 55 flights per day flying from Chicago to London. The most common time of day flights depart is 4:00PM, with 64% of flights taking off in the evening.

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

WestJet and TAP AIR PORTUGAL are the most popular carriers operating from Chicago to London

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

Flights via Zurich (ZRH) offer the lowest average round-trip price of $508.

Which airlines fly direct from Chicago to London?

For travelers making trips on flights from Chicago to London, some of the airlines offering nonstop flights include Finnair, Brussels Airlines, Lufthansa, United Airlines, Alaska Airlines, and British Airways. Beyond these nonstop flight choices, some of the one-stop Chicago to London flight options include a flight on TAP Air Portugal with a stop at Lisbon Humberto Delgado (LIS), a one-stop flight on Swiss Airlines with a layover at Zurich (ZRH), and a one-stop flight on Turkish Airlines with a layover at Istanbul (IST). KLM also offers a one-stop, one-way flight from Chicago to London that has a layover at John F. Kennedy International Airport (JFK) and British Airways offers a one-stop flight that has a layover at Charlotte Douglas (CLT). Finally, you can find a one-stop flight on Iberia with a layover at Madrid Barajas (MAD) and American Airlines offers a one-stop flight with a layover at Charlotte Douglas.

What is the best way to get in and out of airports in Chicago and London?

The two major airports in the Chicago area that operate flights from Chicago to London are Chicago O' Hare International Airport (ORD) and Chicago Midway (MDW). If you are traveling from downtown Chicago to Chicago O' Hare International Airport, a quick and convenient choice is to travel on the Chicago Transit Authority Blue Line light rail train that offers service from downtown Chicago right to the airport. The Chicago Transit Authority offers a similar service from downtown Chicago to Chicago Midway Airport on their Orange Line light-rail train. If your flight from Chicago to London will be arriving at London Heathrow Airport (LHR), a quick and convenient choice is to take the Heathrow Express light-rail train. If your flight will be arriving at the London City Airport (LCY), a good choice for transportation to the center of London is on the Dockland Light Railway DLR Line. Which cities can you get to from London Heathrow International Airport? While many travelers will utilize London Heathrow Airport to travel to the center of London, there are also quite a few cities and towns west of London that make traveling to London Heathrow Airport a good choice for travelers. Some of the towns and cities include Farnborough, Basingstoke, Newbury, Reading, and Guildford.

What are the benefits of the different airports in Chicago and London?

Since there are quite a few flights from Chicago to London from both major Chicago airports to the London area, your choice for which airport to utilize comes down to which one will be more convenient for you depending on your departure point within the Chicago area. Chicago O' Hare International Airport is located to the northwest of the center of Chicago and is a good option for those coming from the north side of the city and are traveling on cheap flights from Chicago to London. Chicago Midway Airport is located southwest of the city and makes a good choice for those that are coming from the south side of the city. If you are coming from downtown Chicago, both airports are equally convenient especially due to the ample public transportation available from downtown Chicago. When traveling internationally from Chicago to London, you will find that there is quite a bit more choice in terms of flights to London Heathrow Airport as opposed to London City Airport. That said, if you are going to be staying somewhere on the east side of London or anywhere east of the city of London, the London City Airport is going to be far more convenient because London Heathrow Airport is west of London and the trip from this airport to the east side of London can be quite lengthy.

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

Prices for flights from Chicago to London refresh daily.

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

The number of operators available for flights from Chicago to London is 16 as of September 2025.

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

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 layovers 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 Chicago to London.

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

The travel and health documents you'll need for your trip to London 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 London. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$230 Cheap Flights from Chicago to London in 2025/26

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Find the cheapest flights from Chicago to London

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

12:50 pm - 7:10 amORD-LHR

12h 20m1 stop

9:00 am - 6:39 pmLHR-ORD

15h 39m2 stops

$505Air Canada

Find Deal

Wed, Nov 5 - Tue, Nov 11

6:30 pm - 10:55 amORD-LGW

10h 25m1 stop

11:55 am - 5:20 pmLGW-ORD

11h 25m1 stop

$505Icelandair

Find Deal

Mon, Feb 2 - Sun, Feb 15

4:00 pm - 6:20 amORD-LHR

8h 20mnonstop

6:50 am - 12:05 pmLHR-ORD

11h 15m1 stop

$507United Airlines

Find Deal

Tue, Sep 30 - Tue, Oct 7

10:35 pm - 12:15 pmORD-LHR

7h 40mnonstop

2:25 pm - 5:00 pmLHR-ORD

8h 35mnonstop

$510Finnair

Find Deal

Tue, Sep 23 - Fri, Oct 3

7:10 pm - 9:05 amORD-LHR

7h 55mnonstop

1:10 pm - 3:55 pmLHR-ORD

8h 45mnonstop

$512British Airways

Find Deal

Tue, Oct 14 - Tue, Oct 21

4:00 pm - 6:20 amORD-LHR

8h 20mnonstop

9:30 am - 8:06 pmLHR-ORD

16h 36m1 stop

$517United Airlines

Find Deal

Wed, Sep 24 - Wed, Oct 1

8:40 pm - 10:30 amORD-LHR

7h 50mnonstop

2:25 pm - 5:00 pmLHR-ORD

8h 35mnonstop

$521Finnair

Find Deal

Mon, Oct 6 - Wed, Oct 15

5:40 pm - 7:20 amORD-LHR

7h 40mnonstop

9:45 am - 5:23 pmLHR-ORD

13h 38m1 stop

$529Iberia

Find Deal

Mon, Sep 22 - Tue, Sep 30

8:35 pm - 11:15 amORD-LHR

33h 40m1 stop

11:45 am - 11:56 pmLHR-ORD

18h 11m1 stop

$537British Airways

Find Deal

Sat, Nov 1 - Wed, Nov 26

4:45 pm - 2:05 pmORD-LCY

15h 20m1 stop

7:15 pm - 5:00 pmLCY-ORD

26h 45m1 stop

$577Iberia

Find Deal

Tue, Mar 3 - Mon, Mar 9

Iberia flights from Chicago to London

Our best Iberia deals on Chicago to London flight tickets

Iberia

Sep 22

ORD5:40 pmChicago O'Hare Intl

7h 40m

LHR7:20 amLondon Heathrow

Oct 21

LHR12:15 pmLondon Heathrow

8h 25m

ORD2:40 pmChicago O'Hare Intl

$512

Find similar

Iberia

Sep 28

ORD8:40 pmChicago O'Hare Intl

7h 50m

LHR10:30 amLondon Heathrow

Oct 7

LHR9:45 amLondon Heathrow

12h 28m

1 stop

ORD4:13 pmChicago O'Hare Intl

$513

Find similar

Iberia

Sep 23

ORD10:35 pmChicago O'Hare Intl

7h 40m

LHR12:15 pmLondon Heathrow

Sep 30

LHR9:45 amLondon Heathrow

13h 38m

1 stop

ORD5:23 pmChicago O'Hare Intl

$528

Find similar

Air Canada flights from Chicago to London

Our best Air Canada deals on Chicago to London flight tickets

Air Canada

Sep 22

ORD9:50 pmChicago O'Hare Intl

7h 55m

LHR11:45 amLondon Heathrow

Sep 30

LHR9:30 amLondon Heathrow

11h 25m

1 stop

ORD2:55 pmChicago O'Hare Intl

$505

Find similar

Air Canada

Sep 22

ORD9:50 pmChicago O'Hare Intl

7h 55m

LHR11:45 amLondon Heathrow

Sep 30

LHR8:30 amLondon Heathrow

9h 00m

ORD11:30 amChicago O'Hare Intl

$508

Find similar

Air Canada

Sep 28

ORD7:11 amChicago O'Hare Intl

17h 19m

1 stop

LHR6:30 amLondon Heathrow

Oct 7

LHR6:50 amLondon Heathrow

13h 58m

2 stops

ORD2:48 pmChicago O'Hare Intl

$509

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 11/5

12:50 pm-7:10 am

1 stop12h 20m

London Heathrow

Tue 11/11

9:00 am-6:39 pm

2 stops15h 39m

$505

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Mon 2/2

6:30 pm-10:55 am

1 stop10h 25m

London Gatwick

Sun 2/15

11:55 am-5:20 pm

1 stop11h 25m

$505

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 9/30

4:00 pm-6:20 am

Nonstop8h 20m

London Heathrow

Tue 10/7

6:50 am-12:05 pm

1 stop11h 15m

$507

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 9/23

10:35 pm-12:15 pm

Nonstop7h 40m

London Heathrow

Fri 10/3

2:25 pm-5:00 pm

Nonstop8h 35m

$510

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 10/14

7:10 pm-9:05 am

Nonstop7h 55m

London Heathrow

Tue 10/21

1:10 pm-3:55 pm

Nonstop8h 45m

$512

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 9/24

4:00 pm-6:20 am

Nonstop8h 20m

London Heathrow

Wed 10/1

9:30 am-8:06 pm

1 stop16h 36m

$517

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 10/6

8:40 pm-10:30 am

Nonstop7h 50m

London Heathrow

Wed 10/15

2:25 pm-5:00 pm

Nonstop8h 35m

$521

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 9/22

5:40 pm-7:20 am

Nonstop7h 40m

London Heathrow

Tue 9/30

9:45 am-5:23 pm

1 stop13h 38m

$529

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sat 11/1

8:35 pm-11:15 am

1 stop33h 40m

London Heathrow

Wed 11/26

11:45 am-11:56 pm

1 stop18h 11m

$537

ChicagoLondon

ORD - LCY

ORDLCY

Chicago O'Hare Intl

Tue 3/3

4:45 pm-2:05 pm

1 stop15h 20m

London City

Mon 3/9

7:15 pm-5:00 pm

1 stop26h 45m

$577

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How to get the cheapest flight ticket from Chicago to London

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 London?

The cheapest month to fly to London from Chicago is in February. Flight prices, which tend to average around $650, are often lower during this time because this is during the off-season. The month of September is another great option to travel to London, with average flight prices from Chicago averaging around $659.

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

The cheapest day to depart from Chicago to London is on a Tuesday. Travelers who choose to depart for London on a Tuesday will often find tickets for as low as $762. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $908. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

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

Flying to London from Chicago in the morning is the least expensive time of day to depart. momondo users have found prices as low as $663 when looking at flights departing in the morning. Flights to London are more costly in the afternoon, with an average ticket price of $827. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Chicago to London flight route?

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

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

You are more likely to see cheaper flights to London from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $793 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Chicago for as low as $694 on momondo.

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

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

You could potentially save up to 11% on your flight if you consider stops on a Chicago to London flight.

How have Chicago to London flight prices changed over time?

As of September 2025, prices for Chicago to London flights are approximately 13% cheaper when compared to flights at the same time last year.

When to book flights from Chicago to London

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

Estimated round-trip price

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

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

Best Price Found	$438
Fastest flight time	7h 40m
Direct flights	Every day
Airports in London	1 airport

The best one-way flight to London from Chicago in the past 72 hours is $438. The best round-trip flight deal from Chicago to London found on momondo in the last 72 hours is $642.

The fastest flight from Chicago to London takes 7h 40m

Direct flights go from Chicago to London every day.

There is 1 airport near London: London Heathrow (LHR)

Search flight deals

How far is Chicago to London by plane?
A flight from Chicago to London will travel around 3945.2 mi. Flights usually cover this in 7h 40m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Chicago to London?
Prices for flights from Chicago to London refresh daily.
How many operators does momondo search for flights from Chicago to London?
The number of operators available for flights from Chicago to London is 16 as of September 2025.
How old do you have to be to fly from Chicago to London?
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 layovers 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 Chicago to London.
What documentation or ID do you need to fly to London?
The travel and health documents you'll need for your trip to London 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 London. 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 Chicago to London?
Based on momondo bookings for flights between Chicago and London, the leading plane model is Boeing 787-9 Dreamliner, making up 40.62% of the total bookings. Other popular models include Boeing 787-10 Dreamliner with 19.41%, Boeing 777 with 16.58%, and Boeing 767-300 with 14.74%.
What is the most popular airline from Chicago to London?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Chicago to London is British Airways (30% of total bookings). The next most popular airlines are Iberia (22%), United Airlines (12%), and Icelandair (10%).

Best airlines flying from Chicago to London

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

Airline	Rating	Free Cancellation	Price
JetBlue	PriceFrom $51	Free Cancellation	Rating 7.2 2,914 reviews	Search JetBlue flights
SWISS	PriceFrom $257	Free Cancellation	Rating 7.6 1,737 reviews	Search SWISS flights
Scandinavian Airlines	PriceFrom $338	Free Cancellation	Rating 7.4 1,486 reviews	Search Scandinavian Airlines flights
Delta	PriceFrom $345	Free Cancellation	Rating 7.9 7,961 reviews	Search Delta flights
Lufthansa	PriceFrom $430	Free Cancellation	Rating 6.8 7,409 reviews	Search Lufthansa flights
TAP AIR PORTUGAL	PriceFrom $450	Free Cancellation	Rating 7.1 1,977 reviews	Search TAP AIR PORTUGAL flights
Icelandair	PriceFrom $472	Free Cancellation	Rating 7.0 545 reviews	Search Icelandair flights
British Airways	PriceFrom $502	Free Cancellation	Rating 6.7 7,367 reviews	Search British Airways flights
Aer Lingus	PriceFrom $537	Free Cancellation	Rating 7.2 1,277 reviews	Search Aer Lingus flights
Finnair	PriceFrom $547	Free Cancellation	Rating 7.6 1,324 reviews	Search Finnair flights

SWISS Flights From Chicago to London
Across 21 SWISS flights from Chicago to London this week, the average price was $701, with the best SWISS deals starting from $257 round-trip. 1,737 users have rated SWISS on momondo, with an average score of 7.6/10.
Finnair Flights From Chicago to London
The best Finnair deal for Chicago to London flight tickets found on momondo in the last 72 hours was $547, round-trip. It should be noted that an average Finnair flight deal for this route in this time was higher, at $765 round-trip. Finnair operates 33 flights out of Chicago into London in an average week, so prices vary by time and availability. 1,324 Finnair reviews by users on momondo have scored the airline at 7.6/10.

Gatwick

Hounslow

Dover

Luton

Slough

Milton Keynes

Hayes

Guildford

Dartford

Crawley

Stansted

Chelmsford

Brentwood

Ilford

Folkestone

Colchester

Watford

Wembley

Richmond

Croydon

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chicago to London. momondo saves you time and could save you money on your trip.

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

Yes. momondo enables you to select and highlight flights to London from Chicago with this policy.

How can momondo help me find flights from Chicago to London?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Chicago.

I’m not ready to book a flight from Chicago to London right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to London from Chicago. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your London 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.

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London Gatwick Airport

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Flights to Manchesterfrom $391

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Flights to Glasgowfrom $374

Flights to Birminghamfrom $389

Flights to Newcastle upon Tynefrom $430

Flights to Belfastfrom $514

Flights to Bristolfrom $425

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Flights to Liverpoolfrom $441

Flights to Aberdeenfrom $487

Flights to Leedsfrom $453

Flights to Cardifffrom $444

Cheap flights from Chicago to London from $230

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to London departing on 10/25. 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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Iberia flights from Chicago to London

Our best Iberia deals on Chicago to London flight tickets

Air Canada flights from Chicago to London

Our best Air Canada deals on Chicago to London flight tickets

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See travel insights to London from

How to get the cheapest flight ticket from Chicago to London

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 London?

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

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

What is the cheapest Chicago to London flight route?

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

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

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

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

You could potentially save up to 11% on your flight if you consider stops on a Chicago to London flight.

How have Chicago to London flight prices changed over time?

As of September 2025, prices for Chicago to London flights are approximately 13% cheaper when compared to flights at the same time last year.

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

WestJet and TAP AIR PORTUGAL are the most popular carriers operating from Chicago to London

What airlines fly to London?

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

Reykjavik (KEF) was the most common stop: 41% of momondo users choosing 1-stop flights on this route connected there.

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

Flights via Zurich (ZRH) offer the lowest average round-trip price of $508.

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

Flights connecting via Amsterdam (AMS) have the shortest average one-way travel time: 9h 53m.

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

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

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

As of September 2025, there are 55 flights per day flying from Chicago to London. The most common time of day flights depart is 4:00PM, with 64% of flights taking off in the evening.

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

388 flights are operational weekly from Chicago to London as of September 2025. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.

When to book flights from Chicago to London

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

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

Best Price Found

Fastest flight time

Direct flights

Airports in London

How far is Chicago to London by plane?

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

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

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

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

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

What is the most popular airline from Chicago to London?

Best airlines flying from Chicago to London

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

SWISS Flights From Chicago to London

Finnair Flights From Chicago to London

Traveling to a place near London?

Why use momondo?

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

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

How can momondo help me find flights from Chicago to London?

I’m not ready to book a flight from Chicago to London right now. Can momondo alert me if prices change?

An easier way to manage your London 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 the United Kingdom