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.

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

As of November 2025, there are 42 flights per day flying from Chicago to London. The most common time of day flights depart is 21:00, with 68% of flights taking off in the evening.

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

Flights via Lisbon (LIS) offer the lowest average return price of £462.

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

Reykjavik (KEF) was the most common stop: 63% of momondo users choosing one-stop flights on this route connected there.

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

Icelandair, JetBlue, and Iberia are the most popular carriers 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 296 per week as of November 2025. The most frequent departure day is Mon, with 17% of weekly flights leaving on this day.

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 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.

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 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 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.

£201 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 £479 to £783. The lowest price recently found on this route was £418.

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18:30 - 16:45ORD-LTN

16h 15m2 stops

06:00 - 17:20LTN-ORD

17h 20m2 stops

£418Multiple Airlines

Find Deal

dim., 1 mars - sam., 7 mars

19:20 - 18:50ORD-LHR

17h 30m2 stops

06:40 - 16:45LHR-ORD

16h 05m1 stop

£418Scandinavian Airlines

Find Deal

jeu., 22 janv. - lun., 26 janv.

20:15 - 15:45ORD-LGW

13h 30m1 stop

16:35 - 14:45LGW-ORD

28h 10m1 stop

£418TAP AIR PORTUGAL

Find Deal

ven., 28 nov. - sam., 6 déc.

20:15 - 17:30ORD-LHR

15h 15m1 stop

19:55 - 15:25LHR-ORD

25h 30m1 stop

£419TAP AIR PORTUGAL

Find Deal

ven., 28 nov. - jeu., 4 déc.

18:30 - 20:05ORD-LTN

19h 35m2 stops

09:00 - 18:20LTN-ORD

14h 20m2 stops

£419Multiple Airlines

Find Deal

mar., 3 mars - mar., 10 mars

19:40 - 13:25ORD-LHR

11h 45m1 stop

07:50 - 14:00LHR-ORD

12h 10m1 stop

£420Aer Lingus

Find Deal

mer., 10 déc. - mer., 17 déc.

18:30 - 10:50ORD-LHR

10h 20m1 stop

20:35 - 17:20LHR-ORD

26h 45m1 stop

£420Icelandair

Find Deal

mer., 10 déc. - mer., 7 janv.

18:30 - 10:55ORD-LGW

10h 25m1 stop

11:55 - 17:20LGW-ORD

11h 25m1 stop

£420Icelandair

Find Deal

sam., 6 déc. - jeu., 8 janv.

11:48 - 07:05MDW-LHR

13h 17m1 stop

11:30 - 22:07LHR-MDW

16h 37m2 stops

£448Delta

Find Deal

mar., 30 déc. - jeu., 15 janv.

13:47 - 07:05MDW-LHR

11h 18m1 stop

06:20 - 18:00LHR-MDW

17h 40m2 stops

£449Delta

Find Deal

lun., 1 déc. - mar., 9 déc.

United Airlines flights from Chicago to London

Our best United Airlines deals on Chicago to London flight tickets

United Airlines

19 Nov

ORD15:45Chicago O'Hare Intl

8h 10m

LHR05:55London Heathrow

26 Nov

LHR09:00London Heathrow

13h 20m

1 stop

ORD16:20Chicago O'Hare Intl

£430

Find similar

United Airlines

1 Dec

ORD21:05Chicago O'Hare Intl

8h 10m

LHR11:15London Heathrow

25 Dec

LHR11:10London Heathrow

13h 15m

1 stop

ORD18:25Chicago O'Hare Intl

£432

Find similar

United Airlines

1 Dec

ORD21:05Chicago O'Hare Intl

8h 10m

LHR11:15London Heathrow

24 Dec

LHR11:10London Heathrow

13h 15m

1 stop

ORD18:25Chicago O'Hare Intl

£439

Find similar

Iberia flights from Chicago to London

Our best Iberia deals on Chicago to London flight tickets

Iberia

1 Dec

ORD18:25Chicago O'Hare Intl

7h 50m

LHR08:15London Heathrow

9 Dec

LHR12:35London Heathrow

8h 50m

ORD15:25Chicago O'Hare Intl

£433

Find similar

Iberia

1 Dec

ORD18:25Chicago O'Hare Intl

7h 50m

LHR08:15London Heathrow

11 Dec

LHR13:30London Heathrow

12h 15m

1 stop

ORD19:45Chicago O'Hare Intl

£450

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

dim. 1/3

18:30-16:45

2 stops16h 15m

London Luton

sam. 7/3

06:00-17:20

2 stops17h 20m

£418

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

jeu. 22/1

19:20-18:50

2 stops17h 30m

London Heathrow

lun. 26/1

06:40-16:45

1 stop16h 05m

£418

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

ven. 28/11

20:15-15:45

1 stop13h 30m

London Gatwick

sam. 6/12

16:35-14:45

1 stop28h 10m

£418

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

ven. 28/11

20:15-17:30

1 stop15h 15m

London Heathrow

jeu. 4/12

19:55-15:25

1 stop25h 30m

£419

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

mar. 3/3

18:30-20:05

2 stops19h 35m

London Luton

mar. 10/3

09:00-18:20

2 stops14h 20m

£419

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mer. 10/12

19:40-13:25

1 stop11h 45m

London Heathrow

mer. 17/12

07:50-14:00

1 stop12h 10m

£420

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mer. 10/12

18:30-10:50

1 stop10h 20m

London Heathrow

mer. 7/1

20:35-17:20

1 stop26h 45m

£420

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

sam. 6/12

18:30-10:55

1 stop10h 25m

London Gatwick

jeu. 8/1

11:55-17:20

1 stop11h 25m

£420

ChicagoLondon

MDW - LHR

MDWLHR

Chicago Midway

mar. 30/12

11:48-07:05

1 stop13h 17m

London Heathrow

jeu. 15/1

11:30-22:07

2 stops16h 37m

£448

ChicagoLondon

MDW - LHR

MDWLHR

Chicago Midway

lun. 1/12

13:47-07:05

1 stop11h 18m

London Heathrow

mar. 9/12

06:20-18:00

2 stops17h 40m

£449

Flights are sorted by cheapest return 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

Stopovers

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 £496, 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 £499.

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

Our data shows that Sunday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £520. 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 £711.

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 afternoon when flights can be purchased for as low as £572. Flights at midday are often more expensive, with an average ticket price of £832.

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 £604 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 £533 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 37% 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 11% 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	£303
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 £303. The best return flight deal from Chicago to London found on momondo in the last 72 hours is £497.

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 45m.
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 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 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 38.70% of the total bookings. Other popular models include Boeing 787-10 Dreamliner with 18.69%, Boeing 767-300 with 16.41%, and Boeing 777 with 15.64%.
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 (15%), Icelandair (11%), and Lufthansa (11%).

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 £366	Free Cancellation	Rating 6.8 7,576 reviews	Search Lufthansa flights
American Airlines	PriceFrom £394	Free Cancellation	Rating 7.2 11,045 reviews	Search American Airlines flights
Finnair	PriceFrom £423	Free Cancellation	Rating 7.6 1,334 reviews	Search Finnair flights
Iberia	PriceFrom £456	Free Cancellation	Rating 7.0 3,026 reviews	Search Iberia flights
Aer Lingus	PriceFrom £459	Free Cancellation	Rating 7.2 1,376 reviews	Search Aer Lingus flights
British Airways	PriceFrom £460	Free Cancellation	Rating 6.7 7,532 reviews	Search British Airways flights
United Airlines	PriceFrom £472	Free Cancellation	Rating 7.4 9,020 reviews	Search United Airlines flights

Finnair Flights From Chicago to London
Finnair flight deals from Chicago to London start from £423 round-trip. Over the 26 Finnair flights for this route in a normal week, average airfare is usually £688 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 £472 round-trip, depending on your selected dates, with average United Airlines deals seen on momondo around £630. United Airlines operates 21 flights to London from Chicago in an average week. Users have rated it 7.4/10 across 9,019 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 £201

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 3/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

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Find the cheapest flights from Chicago to London

Cheap return flights

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Cheap last-minute flights

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United Airlines flights from Chicago to London

Our best United Airlines deals on Chicago to London flight tickets

Iberia flights from Chicago to London

Our best Iberia deals on Chicago to London flight tickets

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

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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?

Our data shows that Sunday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £520. 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 £711.

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 afternoon when flights can be purchased for as low as £572. Flights at midday are often more expensive, with an average ticket price of £832.

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 37% 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 11% cheaper when compared to flights at the same time last year.

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

Icelandair, JetBlue, and Iberia are the most popular carriers 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: 63% 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 £462.

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 November 2025, there are 42 flights per day flying from Chicago to London. The most common time of day flights depart is 21:00, with 68% 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 296 per week as of November 2025. The most frequent departure day is Mon, with 17% 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.