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 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 week?

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

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

As of November 2025, there are 43 flights per day flying from Chicago to London. The most common time of day flights depart is 6:00PM, with 80% of flights taking off in the evening.

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 17 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

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

Reykjavik (KEF) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

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

WestJet is the most popular carrier operating from Chicago to London

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 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.

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.

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 17 as of November 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.

$232 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 $596 to $865. The lowest price recently found on this route was $535.

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:30 pm - 10:50 amORD-LHR

10h 20m1 stop

8:35 pm - 5:20 pmLHR-ORD

26h 45m1 stop

$535Icelandair

Find Deal

Fri, Nov 14 - Wed, Nov 19

10:18 am - 10:00 amORD-LGW

17h 42m1 stop

2:00 pm - 10:25 amLGW-ORD

26h 25m2 stops

$535Multiple Airlines

Find Deal

Sun, Jan 11 - Sat, Jan 17

6:30 pm - 2:50 pmORD-STN

14h 20m2 stops

6:30 am - 5:20 pmSTN-ORD

16h 50m2 stops

$535Multiple Airlines

Find Deal

Thu, Jan 15 - Mon, Jan 19

2:42 pm - 7:50 amORD-LHR

11h 08m1 stop

2:10 pm - 5:00 pmLHR-ORD

8h 50mnonstop

$561Iberia

Find Deal

Mon, Dec 8 - Mon, Dec 15

8:40 pm - 10:25 amORD-LHR

7h 45mnonstop

12:35 pm - 3:25 pmLHR-ORD

8h 50mnonstop

$569Finnair

Find Deal

Sun, Nov 9 - Tue, Nov 18

6:25 pm - 8:15 amORD-LHR

7h 50mnonstop

12:35 pm - 3:25 pmLHR-ORD

8h 50mnonstop

$575Finnair

Find Deal

Tue, Dec 2 - Tue, Dec 9

6:30 pm - 8:15 amORD-LHR

7h 45mnonstop

12:35 pm - 3:25 pmLHR-ORD

8h 50mnonstop

$577Iberia

Find Deal

Wed, Nov 12 - Wed, Nov 19

9:45 pm - 11:35 amORD-LHR

7h 50mnonstop

11:00 am - 1:50 pmLHR-ORD

8h 50mnonstop

$582British Airways

Find Deal

Mon, Nov 17 - Wed, Nov 26

5:10 pm - 6:55 amORD-LHR

7h 45mnonstop

1:10 pm - 7:41 pmLHR-ORD

12h 31m1 stop

$586American Airlines

Find Deal

Sun, Nov 9 - Tue, Nov 18

4:05 pm - 9:15 amORD-LHR

11h 10m1 stop

12:35 pm - 3:25 pmLHR-ORD

8h 50mnonstop

$587American Airlines

Find Deal

Mon, Dec 1 - Tue, Dec 9

Delta flights from Chicago to London

Our best Delta deals on Chicago to London flight tickets

Delta

Nov 9

ORD9:51 amChicago O'Hare Intl

17h 09m

1 stop

LHR9:00 amLondon Heathrow

Nov 18

LHR9:00 amLondon Heathrow

12h 10m

1 stop

ORD3:10 pmChicago O'Hare Intl

$572

Find similar

Delta

Nov 9

ORD9:51 amChicago O'Hare Intl

17h 09m

1 stop

LHR9:00 amLondon Heathrow

Nov 18

LHR6:20 amLondon Heathrow

14h 50m

1 stop

ORD3:10 pmChicago O'Hare Intl

$573

Find similar

Delta

Nov 9

ORD11:19 amChicago O'Hare Intl

13h 06m

1 stop

LHR6:25 amLondon Heathrow

Nov 18

LHR9:00 amLondon Heathrow

12h 10m

1 stop

ORD3:10 pmChicago O'Hare Intl

$574

Find similar

Scandinavian Airlines flights from Chicago to London

Our best Scandinavian Airlines deals on Chicago to London flight tickets

Scandinavian Airlines

Jan 11

ORD10:24 amChicago O'Hare Intl

23h 36m

2 stops

LHR4:00 pmLondon Heathrow

Feb 4

LHR7:50 pmLondon Heathrow

26h 55m

2 stops

ORD4:45 pmChicago O'Hare Intl

$537

Find similar

Scandinavian Airlines

Dec 5

ORD7:10 amChicago O'Hare Intl

26h 50m

2 stops

LHR4:00 pmLondon Heathrow

Dec 9

LHR7:50 pmLondon Heathrow

26h 55m

2 stops

ORD4:45 pmChicago O'Hare Intl

$539

Find similar

Scandinavian Airlines

Jan 22

ORD7:20 pmChicago O'Hare Intl

15h 05m

2 stops

LHR4:25 pmLondon Heathrow

Feb 3

LHR5:30 pmLondon Heathrow

29h 15m

2 stops

ORD4:45 pmChicago O'Hare Intl

$541

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Fri 11/14

6:30 pm-10:50 am

1 stop10h 20m

London Heathrow

Wed 11/19

8:35 pm-5:20 pm

1 stop26h 45m

$535

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Sun 1/11

10:18 am-10:00 am

1 stop17h 42m

London Gatwick

Sat 1/17

2:00 pm-10:25 am

2 stops26h 25m

$535

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Thu 1/15

6:30 pm-2:50 pm

2 stops14h 20m

London Stansted

Mon 1/19

6:30 am-5:20 pm

2 stops16h 50m

$535

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 12/8

2:42 pm-7:50 am

1 stop11h 08m

London Heathrow

Mon 12/15

2:10 pm-5:00 pm

Nonstop8h 50m

$561

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 11/9

8:40 pm-10:25 am

Nonstop7h 45m

London Heathrow

Tue 11/18

12:35 pm-3:25 pm

Nonstop8h 50m

$569

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 12/2

6:25 pm-8:15 am

Nonstop7h 50m

London Heathrow

Tue 12/9

12:35 pm-3:25 pm

Nonstop8h 50m

$575

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 11/12

6:30 pm-8:15 am

Nonstop7h 45m

London Heathrow

Wed 11/19

12:35 pm-3:25 pm

Nonstop8h 50m

$577

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 11/17

9:45 pm-11:35 am

Nonstop7h 50m

London Heathrow

Wed 11/26

11:00 am-1:50 pm

Nonstop8h 50m

$582

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 11/9

5:10 pm-6:55 am

Nonstop7h 45m

London Heathrow

Tue 11/18

1:10 pm-7:41 pm

1 stop12h 31m

$586

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 12/1

4:05 pm-9:15 am

1 stop11h 10m

London Heathrow

Tue 12/9

12:35 pm-3:25 pm

Nonstop8h 50m

$587

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 $652, 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 $771. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $923. 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 at noon is the least expensive time of day to depart. momondo users have found prices as low as $760 when looking at flights departing at noon. Flights to London are more costly in the afternoon, with an average ticket price of $836. 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 $794 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 10% 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 November 2025, prices for Chicago to London flights are approximately 26% 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	$439
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 $439. The best round-trip flight deal from Chicago to London found on momondo in the last 72 hours is $713.

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 45m, 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 17 as of November 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 38.56% of the total bookings. Other popular models include Boeing 787-10 Dreamliner with 19.04%, Boeing 767-300 with 16.24%, and Boeing 777 with 16.15%.
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 (9%).

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 2,907 reviews	Search JetBlue flights
SWISS	PriceFrom $257	Free Cancellation	Rating 7.5 1,776 reviews	Search SWISS flights
Scandinavian Airlines	PriceFrom $338	Free Cancellation	Rating 7.4 1,557 reviews	Search Scandinavian Airlines flights
Delta	PriceFrom $345	Free Cancellation	Rating 7.9 8,002 reviews	Search Delta flights
TAP AIR PORTUGAL	PriceFrom $450	Free Cancellation	Rating 7.1 2,046 reviews	Search TAP AIR PORTUGAL flights
Lufthansa	PriceFrom $460	Free Cancellation	Rating 6.8 7,547 reviews	Search Lufthansa flights
Icelandair	PriceFrom $481	Free Cancellation	Rating 7.1 568 reviews	Search Icelandair flights
Alaska Airlines	PriceFrom $487	Free Cancellation	Rating 8.0 11,237 reviews	Search Alaska Airlines flights
British Airways	PriceFrom $502	Free Cancellation	Rating 6.7 7,494 reviews	Search British Airways flights
Aer Lingus	PriceFrom $515	Free Cancellation	Rating 7.2 1,365 reviews	Search Aer Lingus flights

Alaska Airlines Flights From Chicago to London
Across 26 Alaska Airlines flights from Chicago to London this week, the average price was $677, with the best Alaska Airlines deals starting from $487 round-trip. 11,237 users have rated Alaska Airlines on momondo, with an average score of 8.0/10.
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 $542, round-trip. It should be noted that an average Finnair flight deal for this route in this time was higher, at $793 round-trip. Finnair operates 21 flights out of Chicago into London in an average week, so prices vary by time and availability. 1,335 Finnair reviews by users on momondo have scored the airline at 7.6/10.

Gatwick

Hounslow

Milton Keynes

Dover

Luton

Slough

Guildford

Hayes

Dartford

Crawley

Brentwood

Chelmsford

Folkestone

Romford

Ilford

Cobham

Wembley

Stansted

Watford

Harrow

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 $232

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 11/15. 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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Delta flights from Chicago to London

Our best Delta deals on Chicago to London flight tickets

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Our best Scandinavian Airlines 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 10% 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 November 2025, prices for Chicago to London flights are approximately 26% cheaper when compared to flights at the same time last year.

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

WestJet is the most popular carrier 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: 40% 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 November 2025, there are 43 flights per day flying from Chicago to London. The most common time of day flights depart is 6:00PM, with 80% of flights taking off in the evening.

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

304 flights are operational weekly from Chicago to London as of November 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

Alaska Airlines 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.