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 16:00, with 64% of flights taking off in the evening.

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

Flights connecting via Dublin (DUB) have the shortest average one-way travel time: 10h 03m.

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

Flights via Lisbon (LIS) offer the lowest average return price of £445.

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

Reykjavik (KEF) was the most common stop: 74% of momondo users choosing one-stop flights on this route connected there.

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

TAP AIR PORTUGAL is the most popular carrier operating from Chicago to London

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

The number of flights available between Chicago and London is 388 per week as of September 2025. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.

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

Reykjavik (KEF) has the shortest average stopover time for this route: 1h 10m.

Which airlines fly to London?

British Airways, Iberia and Finnair 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 53% of people opting to fly with this airline when travelling to London. Keep in mind that there are 7 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 to London?

The best way to get to Chicago O’Hare Airport from the city centre is by train or taxi. Most people prefer to take a taxi from the centre of Chicago to the airport because it is the most reliable method. A taxi will get you to the airport in about 30 to 40 minutes depending on traffic in the city. If you prefer to use the train, then you need to take the blue line to get to the airport. Once you arrive in London the best ways to get from London Heathrow Airport, to the centre of London is by train, bus or taxi. The Heathrow Express train is a convenient way to travel between the airport and the city centre, the train reaches Paddington Station in around 15 minutes, and from here you can access the different underground lines, like the Bakerloo Line, Central Line, Hammersmith & City Line and the District Line. The train leaves the airport every 20 minutes. Which cities can you get to from London Heathrow International Airport? London is a very popular city for travellers and if you're visiting you will probably want to visit other nearby cities. With London's bus and train systems being incredibly robust you can take a high speed train or a very comfortable bus to any city in the country with relative ease. From London you can get to Brighton in the south of England in just over 1 hour using the train. If you want to visit the north of England, you can reach Leeds by train in just under 2h 30min, or Manchester in either 2 or 3 hours depending on the train. You can also easily visit cities in Scotland and Wales from London, Cardiff for example can be reached by train in less than 2 hours with some trains, or visit Edinburgh, the capital of Scotland, which is easily done by train in around 4 hours.

Which airlines fly direct from Chicago to London?

If you have been looking for direct flights from Chicago to London there is only one airline provider that offers direct flights and that is American airlines. A direct flight from Chicago to London with American Airlines takes on average 9 hours to complete. There are other airline providers that offer flights from Chicago to London but they always have at least one stop along the way. Some of these providers include Lufthansa, Turkish Airlines and SWISS. The main arrival and departure airport will remain the same regardless of what provider you use. Withthe departure airport being London Heathrow International Airport and the arrival airport being Chicago O’Hare International Airport. If you're looking for cheap flights from Chicago to London, there are usually better deals on flights with one or more stopovers.

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

Chicago is one of the biggest cities in America, so the airport is well equipped for travellers. Some of the amenities available include waiting areas for travellers, restaurants, bars and shops, which you can access in both the arrival and departure areas of the airport. You can also find charging stations and desk areas to get some work done before your flight or in between connections. London Heathrow Airport is also a major airport and has a multitude of facilities, including on site hotels for passengers who need to rest before their next flight. You can also find restaurants, bars and shops, as well as accessible entrances and a range of accessibility features for elderly travellers and those with disabilities.

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

Prices for flights from Chicago to London were last updated today.

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

The number of operators available for flights from Chicago to London is 7 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 required for your trip to London 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 London. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£174 Cheap Flights from Chicago to London in 2025/26

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One-way

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Direct

Cheap return flights

12:50 - 07:10ORD-LHR

12h 20m1 stop

09:00 - 18:39LHR-ORD

15h 39m2 stops

£370Air Canada

Find Deal

Wed, 5 Nov - Tue, 11 Nov

18:30 - 14:20ORD-STN

13h 50m2 stops

06:30 - 17:20STN-ORD

16h 50m2 stops

£370Multiple Airlines

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Mon, 1 Dec - Sun, 14 Dec

12:50 - 07:10ORD-LHR

12h 20m1 stop

09:00 - 18:52LHR-ORD

15h 52m2 stops

£371Multiple Airlines

Find Deal

Mon, 1 Dec - Tue, 9 Dec

08:40 - 09:35ORD-LHR

18h 55m1 stop

06:50 - 13:10LHR-ORD

11h 20m1 stop

£371United Airlines

Find Deal

Wed, 22 Oct - Fri, 31 Oct

18:30 - 10:55ORD-LGW

10h 25m1 stop

11:55 - 17:20LGW-ORD

11h 25m1 stop

£375Icelandair

Find Deal

Sat, 8 Nov - Sat, 15 Nov

22:15 - 14:40ORD-LGW

10h 25m1 stop

15:40 - 18:15LGW-ORD

32h 35m1 stop

£376Icelandair

Find Deal

Sun, 5 Oct - Tue, 14 Oct

13:43 - 06:20ORD-LHR

10h 37m1 stop

14:25 - 17:00LHR-ORD

8h 35mdirect

£379Iberia

Find Deal

Wed, 8 Oct - Wed, 15 Oct

16:00 - 06:20ORD-LHR

8h 20mdirect

14:10 - 17:20LHR-ORD

9h 10mdirect

£380United Airlines

Find Deal

Sun, 28 Sep - Tue, 7 Oct

21:45 - 11:35ORD-LHR

7h 50mdirect

12:15 - 14:40LHR-ORD

8h 25mdirect

£388British Airways

Find Deal

Sun, 1 Mar - Wed, 6 May

20:35 - 11:15ORD-LHR

33h 40m1 stop

15:05 - 21:15LHR-ORD

12h 10m1 stop

£393British Airways

Find Deal

Sat, 1 Nov - Tue, 25 Nov

Air Canada flights from Chicago to London

Our best Air Canada deals on Chicago to London flight tickets

Air Canada

5 Nov

ORD12:50Chicago O'Hare Intl

12h 20m

1 stop

LHR07:10London Heathrow

11 Nov

LHR09:00London Heathrow

15h 39m

2 stops

ORD18:39Chicago O'Hare Intl

£370

Find similar

Air Canada

28 Sept

ORD10:40Chicago O'Hare Intl

13h 50m

1 stop

LHR06:30London Heathrow

7 Oct

LHR06:50London Heathrow

13h 58m

2 stops

ORD14:48Chicago O'Hare Intl

£372

Find similar

Air Canada

28 Sept

ORD21:25Chicago O'Hare Intl

8h 20m

LHR11:45London Heathrow

7 Oct

LHR14:10London Heathrow

9h 10m

ORD17:20Chicago O'Hare Intl

£374

Find similar

Delta flights from Chicago to London

Our best Delta deals on Chicago to London flight tickets

Delta

5 Nov

ORD15:50Chicago O'Hare Intl

13h 35m

1 stop

LHR11:25London Heathrow

20 Nov

LHR06:20London Heathrow

14h 50m

1 stop

ORD15:10Chicago O'Hare Intl

£375

Find similar

Delta

8 Oct

ORD13:08Chicago O'Hare Intl

16h 17m

1 stop

LHR11:25London Heathrow

11 Mar

LHR08:55London Heathrow

12h 15m

1 stop

ORD16:10Chicago O'Hare Intl

£377

Find similar

Delta

19 Oct

ORD07:05Chicago O'Hare Intl

17h 40m

1 stop

LHR06:45London Heathrow

29 Oct

LHR09:00London Heathrow

12h 10m

1 stop

ORD16:10Chicago O'Hare Intl

£377

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Fly from

Fly to

Route

Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 5/11

12:50-07:10

1 stop12h 20m

London Heathrow

Tue 11/11

09:00-18:39

2 stops15h 39m

£370

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Mon 1/12

18:30-14:20

2 stops13h 50m

London Stansted

Sun 14/12

06:30-17:20

2 stops16h 50m

£370

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 1/12

12:50-07:10

1 stop12h 20m

London Heathrow

Tue 9/12

09:00-18:52

2 stops15h 52m

£371

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 22/10

08:40-09:35

1 stop18h 55m

London Heathrow

Fri 31/10

06:50-13:10

1 stop11h 20m

£371

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Sat 8/11

18:30-10:55

1 stop10h 25m

London Gatwick

Sat 15/11

11:55-17:20

1 stop11h 25m

£375

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Sun 5/10

22:15-14:40

1 stop10h 25m

London Gatwick

Tue 14/10

15:40-18:15

1 stop32h 35m

£376

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 8/10

13:43-06:20

1 stop10h 37m

London Heathrow

Wed 15/10

14:25-17:00

Nonstop8h 35m

£379

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 28/9

16:00-06:20

Nonstop8h 20m

London Heathrow

Tue 7/10

14:10-17:20

Nonstop9h 10m

£380

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 1/3

21:45-11:35

Nonstop7h 50m

London Heathrow

Wed 6/5

12:15-14:40

Nonstop8h 25m

£388

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sat 1/11

20:35-11:15

1 stop33h 40m

London Heathrow

Tue 25/11

15:05-21:15

1 stop12h 10m

£393

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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

Stopovers

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 £476, 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 £483.

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

Our data shows that Thursday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £507. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Chicago to London for around £646.

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

The cheapest time of day to fly to London is in the morning when flights can be purchased for as low as £480. Flights at midday are often more expensive, with an average ticket price of £802.

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 £581 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Chicago for as low as £508 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 36% 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 return 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	£273
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 £273. The best return flight deal from Chicago to London found on momondo in the last 72 hours is £438.

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?
There are 3945.2 mi between Chicago and London. In terms of flight time, this usually takes a little over 7h 50m.
When did momondo last update prices for flights from Chicago to London?
Prices for flights from Chicago to London were last updated today.
How many operators does momondo search for flights from Chicago to London?
The number of operators available for flights from Chicago to London is 7 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 required for your trip to London 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 London. 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 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 (37% of total bookings). The next most popular airlines are Iberia (18%), Icelandair (12%), and United Airlines (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
Lufthansa	PriceFrom £352	Free Cancellation	Rating 6.8 7,409 reviews	Search Lufthansa flights
American Airlines	PriceFrom £379	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Finnair	PriceFrom £407	Free Cancellation	Rating 7.6 1,324 reviews	Search Finnair flights
Iberia	PriceFrom £439	Free Cancellation	Rating 7.0 2,925 reviews	Search Iberia flights
Aer Lingus	PriceFrom £442	Free Cancellation	Rating 7.2 1,277 reviews	Search Aer Lingus flights
British Airways	PriceFrom £452	Free Cancellation	Rating 6.7 7,367 reviews	Search British Airways flights
United Airlines	PriceFrom £455	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights

Finnair Flights From Chicago to London
Finnair flight deals from Chicago to London start from £556 round-trip. Over the 34 Finnair flights for this route in a normal week, average airfare is usually £874 round-trip - but some users have found much cheaper deals with momondo.
United Airlines Flights From Chicago to London
United Airlines is also a popular choice for this route. United Airlines flight deals for Chicago to London start from as low as £621 round-trip, depending on your selected dates, with average United Airlines deals seen on momondo around £934. United Airlines operates 21 flights to London from Chicago in an average week. Users have rated it 7.4/10 across 8,926 reviews.

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Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Chicago to London for you.

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

Flights from Chicago to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo helps you find the best flight between Chicago and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Chicago to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

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Cheap flights from Chicago to London from £174

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 5/11. 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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Air Canada flights from Chicago to London

Our best Air Canada deals on Chicago to London flight tickets

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Our best Delta 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 cheapest month to fly to London?

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

Our data shows that Thursday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £507. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Chicago to London for around £646.

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

The cheapest time of day to fly to London is in the morning when flights can be purchased for as low as £480. Flights at midday are often more expensive, with an average ticket price of £802.

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 36% 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?

TAP AIR PORTUGAL is the most popular carrier operating from Chicago to London

Which airlines fly to London?

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

Reykjavik (KEF) was the most common stop: 74% of momondo users choosing one-stop flights on this route connected there.

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

Flights via Lisbon (LIS) offer the lowest average return price of £445.

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

Flights connecting via Dublin (DUB) have the shortest average one-way travel time: 10h 03m.

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

Reykjavik (KEF) has the shortest average stopover time for this route: 1h 10m.

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 16:00, with 64% of flights taking off in the evening.

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

The number of flights available between Chicago and London is 388 per week as of September 2025. The most frequent departure day is Mon, with 15% of weekly flights leaving 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

United Airlines Flights From Chicago to London

Travelling 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, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down