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

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

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

357 flights are operational weekly from Chicago to London as of October 2025. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

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

Reykjavik (KEF) was the most common stop: 39% 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.

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

As of October 2025, there are 51 flights per day flying from Chicago to London. The most common time of day flights depart is 9:00PM, with 66% of flights taking off in the evening.

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

Flights connecting via Dublin (DUB) have the shortest average one-way travel time: 9h 57m.

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 51% 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.

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.

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 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 October 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.

$235 Cheap Flights from Chicago to London in 2025/26

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

Prices are currently low for flights on this route. Typical prices usually range from $588 to $770. The lowest price recently found on this route was $526.

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One-way

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6:30 pm - 10:50 amORD-LHR

10h 20m1 stop

12:15 pm - 5:20 pmLHR-ORD

11h 05m1 stop

$526Icelandair

Find Deal

Mon, Dec 29 - Fri, Jan 9

6:30 pm - 11:05 pmORD-STN

22h 35m2 stops

6:30 am - 5:20 pmSTN-ORD

16h 50m2 stops

$527Multiple Airlines

Find Deal

Sat, Dec 6 - Sat, Dec 13

6:30 pm - 7:30 pmORD-LHR

19h 00m1 stop

12:15 pm - 5:20 pmLHR-ORD

11h 05m1 stop

$528Icelandair

Find Deal

Wed, Dec 31 - Thu, Jan 15

7:20 pm - 8:55 amORD-LHR

31h 35m2 stops

6:40 am - 4:45 pmLHR-ORD

16h 05m1 stop

$529Scandinavian Airlines

Find Deal

Sun, Nov 16 - Wed, Nov 19

10:40 am - 4:00 pmORD-LHR

23h 20m2 stops

6:40 am - 4:45 pmLHR-ORD

16h 05m1 stop

$530Scandinavian Airlines

Find Deal

Thu, Jan 29 - Fri, Feb 6

4:50 pm - 9:05 amORD-LHR

11h 15m1 stop

7:50 am - 2:00 pmLHR-ORD

12h 10m1 stop

$551Aer Lingus

Find Deal

Sun, Oct 26 - Tue, Nov 4

8:15 pm - 3:45 pmORD-LGW

13h 30m1 stop

4:35 pm - 2:45 pmLGW-ORD

28h 10m1 stop

$552TAP AIR PORTUGAL

Find Deal

Fri, Jan 16 - Sat, Jan 31

9:00 pm - 3:35 pmORD-LHR

12h 35m1 stop

7:50 am - 7:15 pmLHR-ORD

17h 25m1 stop

$553Aer Lingus

Find Deal

Wed, Jan 28 - Thu, Feb 12

8:25 pm - 5:30 pmORD-LHR

15h 05m1 stop

6:30 pm - 2:45 pmLHR-ORD

26h 15m1 stop

$555TAP AIR PORTUGAL

Find Deal

Sun, Nov 9 - Sat, Nov 15

9:45 pm - 10:25 amORD-LHR

7h 40mnonstop

7:40 pm - 2:30 pmLHR-ORD

24h 50m1 stop

$577Iberia

Find Deal

Sun, Oct 26 - Tue, Nov 4

Aer Lingus flights from Chicago to London

Our best Aer Lingus deals on Chicago to London flight tickets

Aer Lingus

Oct 26

ORD4:50 pmChicago O'Hare Intl

11h 15m

1 stop

LHR9:05 amLondon Heathrow

Nov 4

LHR7:50 amLondon Heathrow

12h 10m

1 stop

ORD2:00 pmChicago O'Hare Intl

$551

Find similar

Aer Lingus

Jan 28

ORD9:00 pmChicago O'Hare Intl

12h 35m

1 stop

LHR3:35 pmLondon Heathrow

Feb 12

LHR7:50 amLondon Heathrow

17h 25m

1 stop

ORD7:15 pmChicago O'Hare Intl

$553

Find similar

Aer Lingus

Oct 19

ORD9:15 pmChicago O'Hare Intl

11h 40m

1 stop

LHR2:55 pmLondon Heathrow

Nov 5

LHR8:50 amLondon Heathrow

11h 10m

1 stop

ORD2:00 pmChicago O'Hare Intl

$554

Find similar

Virgin Atlantic flights from Chicago to London

Our best Virgin Atlantic deals on Chicago to London flight tickets

Virgin Atlantic

Oct 26

ORD3:50 pmChicago O'Hare Intl

10h 15m

1 stop

LHR7:05 amLondon Heathrow

Nov 4

LHR5:35 pmLondon Heathrow

27h 35m

1 stop

ORD3:10 pmChicago O'Hare Intl

$540

Find similar

Virgin Atlantic

Oct 26

ORD10:25 amChicago O'Hare Intl

15h 25m

1 stop

LHR6:50 amLondon Heathrow

Nov 4

LHR9:00 amLondon Heathrow

12h 10m

1 stop

ORD3:10 pmChicago O'Hare Intl

$546

Find similar

Virgin Atlantic

Oct 26

ORD4:05 pmChicago O'Hare Intl

11h 55m

1 stop

LHR9:00 amLondon Heathrow

Nov 4

LHR9:00 amLondon Heathrow

12h 10m

1 stop

ORD3:10 pmChicago O'Hare Intl

$559

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 12/29

6:30 pm-10:50 am

1 stop10h 20m

London Heathrow

Fri 1/9

12:15 pm-5:20 pm

1 stop11h 05m

$526

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Sat 12/6

6:30 pm-11:05 pm

2 stops22h 35m

London Stansted

Sat 12/13

6:30 am-5:20 pm

2 stops16h 50m

$527

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 12/31

6:30 pm-7:30 pm

1 stop19h 00m

London Heathrow

Thu 1/15

12:15 pm-5:20 pm

1 stop11h 05m

$528

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 11/16

7:20 pm-8:55 am

2 stops31h 35m

London Heathrow

Wed 11/19

6:40 am-4:45 pm

1 stop16h 05m

$529

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Thu 1/29

10:40 am-4:00 pm

2 stops23h 20m

London Heathrow

Fri 2/6

6:40 am-4:45 pm

1 stop16h 05m

$530

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 10/26

4:50 pm-9:05 am

1 stop11h 15m

London Heathrow

Tue 11/4

7:50 am-2:00 pm

1 stop12h 10m

$551

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Fri 1/16

8:15 pm-3:45 pm

1 stop13h 30m

London Gatwick

Sat 1/31

4:35 pm-2:45 pm

1 stop28h 10m

$552

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 1/28

9:00 pm-3:35 pm

1 stop12h 35m

London Heathrow

Thu 2/12

7:50 am-7:15 pm

1 stop17h 25m

$553

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 11/9

8:25 pm-5:30 pm

1 stop15h 05m

London Heathrow

Sat 11/15

6:30 pm-2:45 pm

1 stop26h 15m

$555

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 10/26

9:45 pm-10:25 am

Nonstop7h 40m

London Heathrow

Tue 11/4

7:40 pm-2:30 pm

1 stop24h 50m

$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 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 typical price of a round-trip flight between Chicago and London?

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 $651, 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 $656.

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 $767. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $913. 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 $659 when looking at flights departing in the morning. Flights to London are more costly in the afternoon, with an average ticket price of $831. 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 $796 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 $696 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 1% 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 October 2025, prices for Chicago to London flights are approximately 3% 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	$446
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 $446. The best round-trip flight deal from Chicago to London found on momondo in the last 72 hours is $661.

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 October 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 39.28% of the total bookings. Other popular models include Boeing 787-10 Dreamliner with 19.19%, Boeing 777 with 16.48%, and Boeing 767-300 with 15.99%.
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 (31% 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 2,908 reviews	Search JetBlue flights
SWISS	PriceFrom $257	Free Cancellation	Rating 7.5 1,772 reviews	Search SWISS flights
Scandinavian Airlines	PriceFrom $338	Free Cancellation	Rating 7.4 1,533 reviews	Search Scandinavian Airlines flights
Delta	PriceFrom $345	Free Cancellation	Rating 7.9 7,979 reviews	Search Delta flights
Lufthansa	PriceFrom $430	Free Cancellation	Rating 6.8 7,491 reviews	Search Lufthansa flights
TAP AIR PORTUGAL	PriceFrom $450	Free Cancellation	Rating 7.1 2,015 reviews	Search TAP AIR PORTUGAL flights
Icelandair	PriceFrom $479	Free Cancellation	Rating 7.0 556 reviews	Search Icelandair flights
British Airways	PriceFrom $502	Free Cancellation	Rating 6.7 7,456 reviews	Search British Airways flights
Aer Lingus	PriceFrom $503	Free Cancellation	Rating 7.2 1,341 reviews	Search Aer Lingus flights
Finnair	PriceFrom $544	Free Cancellation	Rating 7.6 1,332 reviews	Search Finnair flights

Finnair Flights From Chicago to London
Across 28 Finnair flights from Chicago to London this week, the average price was $776, with the best Finnair deals starting from $544 round-trip. 1,332 users have rated Finnair on momondo, with an average score of 7.6/10.
SWISS Flights From Chicago to London
The best SWISS deal for Chicago to London flight tickets found on momondo in the last 72 hours was $257, round-trip. It should be noted that an average SWISS flight deal for this route in this time was higher, at $701 round-trip. SWISS operates 21 flights out of Chicago into London in an average week, so prices vary by time and availability. 1,772 SWISS reviews by users on momondo have scored the airline at 7.5/10.

Gatwick

Hounslow

Milton Keynes

Luton

Dover

Slough

Guildford

Dartford

Crawley

Hayes

Brentwood

Chelmsford

Colchester

Folkestone

Romford

Ilford

Cobham

Wembley

Stansted

Watford

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

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Find better results for your trip to the United Kingdom

Cheap flights from Chicago to London from $235

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 11/5. 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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Aer Lingus flights from Chicago to London

Our best Aer Lingus deals on Chicago to London flight tickets

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Our best Virgin Atlantic deals on Chicago to London flight tickets

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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

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

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 1% 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 October 2025, prices for Chicago to London flights are approximately 3% cheaper when compared to flights at the same time last year.

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

WestJet, JetBlue, 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: 39% 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 Dublin (DUB) have the shortest average one-way travel time: 9h 57m.

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 October 2025, there are 51 flights per day flying from Chicago to London. The most common time of day flights depart is 9:00PM, with 66% of flights taking off in the evening.

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

357 flights are operational weekly from Chicago to London as of October 2025. The most popular departure day for this route is Mon, with 14% 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

Finnair Flights From Chicago to London

SWISS 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.