Which airport is the most popular for stopovers for flights between Chicago O'Hare Intl Airport and London?

Dublin (DUB) was the most common stop: 80% of momondo users choosing one-stop flights on this route connected there.

Which stopover airport offers the lowest fares from Chicago O'Hare Intl Airport to London?

Flights via Dublin (DUB) offer the lowest average return price of £468.

Which airlines fly to London?

British Airways, Iberia and Finnair are the top three most popular airlines that fly to London from Chicago O'Hare Intl Airport 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.

Which stopover airport has the shortest travel time from Chicago O'Hare Intl Airport to London?

Flights connecting via Reykjavik (KEF) have the shortest average one-way travel time: 10h 20m.

How many flights depart from Chicago O'Hare Intl Airport to London on average per week?

The number of flights available between Chicago O'Hare Intl Airport and London is 381 per week as of August 2025. The most frequent departure day is Wed, with 15% of weekly flights leaving on this day.

What is the cheapest airline that flies from Chicago O'Hare Intl to London?

TAP AIR PORTUGAL and WestJet are the most popular carriers operating from Chicago O'Hare Intl to London

How many flights depart from Chicago O'Hare Intl Airport to London on average per day?

As of August 2025, 54 flights take off from Chicago O'Hare Intl Airport and land in London each day. The most common flight departure time for this route is 21:00, with 66% of daily flights taking off in the evening.

Which stopover airport has the shortest connection time from Chicago O'Hare Intl Airport to London?

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

When did momondo last update prices for flights from Chicago O'Hare Intl Airport to London?

Prices for flights from Chicago O'Hare Intl Airport to London were last updated today.

How many operators does momondo search for flights from Chicago O'Hare Intl Airport to London?

As of August 2025, there are 7 operators available to choose from for flights from Chicago O'Hare Intl Airport to London.

How old do you have to be to fly from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport 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.

£170 Cheap Flights from Chicago O'Hare Intl Airport to London in 2025

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Round-trip

One-way

Last minute

Direct

Cheap return flights

19:25 - 11:55ORD-LHR

10h 30m1 stop

21:25 - 21:15LHR-ORD

29h 50m1 stop

£374Icelandair

Find Deal

週五, 19 9月 - 週二, 30 9月

19:25 - 11:45ORD-LGW

10h 20m1 stop

15:40 - 18:15LGW-ORD

32h 35m1 stop

£374Icelandair

Find Deal

週三, 3 9月 - 週五, 12 9月

16:30 - 10:55ORD-LGW

12h 25m1 stop

10:40 - 19:35LGW-ORD

14h 55m1 stop

£376Iberia

Find Deal

週一, 29 9月 - 週二, 7 10月

19:15 - 18:30ORD-LHR

17h 15m1 stop

06:40 - 18:45LHR-ORD

17h 05m1 stop

£377Scandinavian Airlines

Find Deal

週二, 21 10月 - 週四, 30 10月

19:15 - 09:20ORD-LHR

32h 05m1 stop

18:05 - 21:05LHR-ORD

56h 00m2 stops

£378Scandinavian Airlines

Find Deal

週一, 20 10月 - 週一, 27 10月

20:40 - 10:30ORD-LHR

7h 50mdirect

11:05 - 13:50LHR-ORD

8h 45mdirect

£382British Airways

Find Deal

週日, 7 9月 - 週二, 16 9月

20:20 - 18:15ORD-LTN

16h 55m2 stops

14:35 - 16:45LTN-ORD

32h 10m2 stops

£383

Find Deal

週一, 27 10月 - 週日, 9 11月

19:00 - 06:35ORD-LGW

29h 35m1 stop

20:40 - 14:15LGW-ORD

23h 35m1 stop

£385British Airways

Find Deal

週二, 14 10月 - 週二, 21 10月

13:59 - 07:45ORD-LHR

11h 46m1 stop

18:45 - 14:15LHR-ORD

25h 30m1 stop

£385Iberia

Find Deal

週三, 10 9月 - 週三, 24 9月

19:25 - 23:30ORD-STN

22h 05m2 stops

07:35 - 18:15STN-ORD

16h 40m2 stops

£386

Find Deal

週二, 7 10月 - 週四, 16 10月

Icelandair flights from Chicago O'Hare Intl Airport to London

Our best Icelandair deals on Chicago O'Hare Intl Airport to London flight tickets

Icelandair

19 Sept

ORD19:25Chicago O'Hare Intl

10h 30m

1 stop

LHR11:55London Heathrow

30 Sept

LHR21:25London Heathrow

29h 50m

1 stop

ORD21:15Chicago O'Hare Intl

£374

Find similar

Icelandair

28 Sept

ORD19:25Chicago O'Hare Intl

18h 55m

1 stop

LHR20:20London Heathrow

12 Oct

LHR21:25London Heathrow

26h 50m

1 stop

ORD18:15Chicago O'Hare Intl

£375

Find similar

Icelandair

22 Sept

ORD19:25Chicago O'Hare Intl

10h 30m

1 stop

LHR11:55London Heathrow

5 Oct

LHR21:25London Heathrow

26h 50m

1 stop

ORD18:15Chicago O'Hare Intl

£376

Find similar

Scandinavian Airlines flights from Chicago O'Hare Intl Airport to London

Our best Scandinavian Airlines deals on Chicago O'Hare Intl Airport to London flight tickets

Scandinavian Airlines

21 Oct

ORD19:15Chicago O'Hare Intl

17h 15m

1 stop

LHR18:30London Heathrow

30 Oct

LHR06:40London Heathrow

17h 05m

1 stop

ORD18:45Chicago O'Hare Intl

£377

Find similar

Scandinavian Airlines

20 Oct

ORD19:15Chicago O'Hare Intl

32h 05m

1 stop

LHR09:20London Heathrow

27 Oct

LHR18:05London Heathrow

56h 00m

2 stops

ORD21:05Chicago O'Hare Intl

£378

Find similar

Scandinavian Airlines

2 Nov

ORD19:20Chicago O'Hare Intl

20h 20m

1 stop

LHR21:40London Heathrow

7 Nov

LHR06:40London Heathrow

16h 05m

1 stop

ORD16:45Chicago O'Hare Intl

£394

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

週五 19/9

19:25-11:55

1 stop10h 30m

London Heathrow

週二 30/9

21:25-21:15

1 stop29h 50m

£374

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

週三 3/9

19:25-11:45

1 stop10h 20m

London Gatwick

週五 12/9

15:40-18:15

1 stop32h 35m

£374

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

週一 29/9

16:30-10:55

1 stop12h 25m

London Gatwick

週二 7/10

10:40-19:35

1 stop14h 55m

£376

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

週二 21/10

19:15-18:30

1 stop17h 15m

London Heathrow

週四 30/10

06:40-18:45

1 stop17h 05m

£377

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

週一 20/10

19:15-09:20

1 stop32h 05m

London Heathrow

週一 27/10

18:05-21:05

2 stops56h 00m

£378

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

週日 7/9

20:40-10:30

Nonstop7h 50m

London Heathrow

週二 16/9

11:05-13:50

Nonstop8h 45m

£382

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

週一 27/10

20:20-18:15

2 stops16h 55m

London Luton

週日 9/11

14:35-16:45

2 stops32h 10m

£383

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

週二 14/10

19:00-06:35

1 stop29h 35m

London Gatwick

週二 21/10

20:40-14:15

1 stop23h 35m

£385

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

週三 10/9

13:59-07:45

1 stop11h 46m

London Heathrow

週三 24/9

18:45-14:15

1 stop25h 30m

£385

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

週二 7/10

19:25-23:30

2 stops22h 05m

London Stansted

週四 16/10

07:35-18:15

2 stops16h 40m

£386

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 O'Hare Intl Airport 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 O'Hare Intl Airport is in April. Flight prices, which tend to average around £484, are often lower during this time because this is during the off-season. The month of February is another great option to travel to London, with average flight prices from Chicago O'Hare Intl Airport averaging around £484.

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 £518. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Chicago O'Hare Intl Airport to London for around £660.

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 £504. Flights at midday are often more expensive, with an average ticket price of £814.

What is the cheapest Chicago O'Hare Intl to London flight route?

Fly from Chicago O'Hare Intl to London Heathrow for the best Chicago O'Hare Intl - 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 O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £590 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 O'Hare Intl Airport for as low as £521 on momondo.

What cabin class options are available on Chicago O'Hare Intl to London flights?

There are 4 cabin classes available to choose from on Chicago O'Hare Intl 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 O'Hare Intl Airport to London flights?

You could potentially save up to 36% on your flight if you consider stops on a Chicago O'Hare Intl Airport to London flight.

How have Chicago O'Hare Intl Airport to London flight prices changed over time?

As of August 2025, prices for Chicago O'Hare Intl Airport to London flights are approximately 18% cheaper when compared to flights at the same time last year.

When to book flights from Chicago O'Hare Intl Airport to London

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

Estimated return price

Cheap Chicago O'Hare Intl Airport to London (ORD to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to London

Best price found	£311
Fastest flight time	7h 40m
Direct flights	Every day
Airports in London	1 airport

The best one-way flight to London from Chicago O'Hare Intl Airport in the past 72 hours is £311. The best return flight deal from Chicago O'Hare Intl Airport to London found on momondo in the last 72 hours is £374.

The fastest flight from Chicago O'Hare Intl Airport to London takes 7h 40m

Direct flights go from Chicago O'Hare Intl Airport to London every day.

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

Search flight deals

How far is Chicago O'Hare Intl to London by plane?
There are 3950.9 mi between Chicago O'Hare Intl and London. Typically, this will take 7h 40m by plane in normal conditions.
When did momondo last update prices for flights from Chicago O'Hare Intl Airport to London?
Prices for flights from Chicago O'Hare Intl Airport to London were last updated today.
How many operators does momondo search for flights from Chicago O'Hare Intl Airport to London?
As of August 2025, there are 7 operators available to choose from for flights from Chicago O'Hare Intl Airport to London.
How old do you have to be to fly from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport 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 O'Hare Intl Airport to London?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Chicago O'Hare Intl Airport to London is Boeing 787-9 Dreamliner (41.58% of total bookings). The next most popular plane models are Boeing 777 (19.10%), Boeing 787-10 Dreamliner (17.24%), and Boeing 767-300 (15.38%).
What is the most popular airline from Chicago O'Hare Intl Airport to London?
momondo data reveals that the most frequently booked airline on the route from Chicago O'Hare Intl Airport to London is British Airways, representing 49% of all bookings. The subsequent popular airlines are Iberia at 18%, Icelandair at 10%, and United Airlines at 9%.

Best airlines flying from Chicago O'Hare Intl Airport to London

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to London with momondo

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom £358	Free Cancellation	Rating 6.8 7,350 reviews	Search Lufthansa flights
Aer Lingus	PriceFrom £411	Free Cancellation	Rating 7.1 1,228 reviews	Search Aer Lingus flights
Finnair	PriceFrom £414	Free Cancellation	Rating 7.6 1,320 reviews	Search Finnair flights
Iberia	PriceFrom £446	Free Cancellation	Rating 7.0 2,884 reviews	Search Iberia flights
British Airways	PriceFrom £459	Free Cancellation	Rating 6.7 7,292 reviews	Search British Airways flights
United Airlines	PriceFrom £462	Free Cancellation	Rating 7.4 8,934 reviews	Search United Airlines flights
American Airlines	PriceFrom £499	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights

Finnair Flights From Chicago O'Hare Intl Airport to London
Finnair flight deals from Chicago O'Hare Intl Airport to London start from £556 round-trip. Over the 34 Finnair flights for this route in a normal week, average airfare is usually £808 round-trip - but some users have found much cheaper deals with momondo.
United Airlines Flights From Chicago O'Hare Intl Airport to London
Another popular option for Chicago O'Hare Intl Airport to London flights is United Airlines (7.4/10, 8,934 ratings). United Airlines flies from Chicago O'Hare Intl Airport to London around 21 times per week, with deals starting from £621 round-trip and rising to an average price of around £1,002.

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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?

All flight searches from Chicago to London on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight 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?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Chicago and alert you when they change.

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Cheap flights from Chicago O'Hare Intl Airport to London from £170

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Find the cheapest flights from Chicago O'Hare Intl Airport to London

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Icelandair flights from Chicago O'Hare Intl Airport to London

Our best Icelandair deals on Chicago O'Hare Intl Airport to London flight tickets

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See travel insights to London from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport 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 £518. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Chicago O'Hare Intl Airport to London for around £660.

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 £504. Flights at midday are often more expensive, with an average ticket price of £814.

What is the cheapest Chicago O'Hare Intl to London flight route?

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

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

What cabin class options are available on Chicago O'Hare Intl to London flights?

There are 4 cabin classes available to choose from on Chicago O'Hare Intl 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 O'Hare Intl Airport to London flights?

You could potentially save up to 36% on your flight if you consider stops on a Chicago O'Hare Intl Airport to London flight.

How have Chicago O'Hare Intl Airport to London flight prices changed over time?

As of August 2025, prices for Chicago O'Hare Intl Airport to London flights are approximately 18% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from Chicago O'Hare Intl to London?

TAP AIR PORTUGAL and WestJet are the most popular carriers operating from Chicago O'Hare Intl to London

Which airlines fly to London?

Which airport is the most popular for stopovers for flights between Chicago O'Hare Intl Airport and London?

Dublin (DUB) was the most common stop: 80% of momondo users choosing one-stop flights on this route connected there.

Which stopover airport offers the lowest fares from Chicago O'Hare Intl Airport to London?

Flights via Dublin (DUB) offer the lowest average return price of £468.

Which stopover airport has the shortest travel time from Chicago O'Hare Intl Airport to London?

Flights connecting via Reykjavik (KEF) have the shortest average one-way travel time: 10h 20m.

Which stopover airport has the shortest connection time from Chicago O'Hare Intl Airport to London?

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

How many flights depart from Chicago O'Hare Intl Airport to London on average per day?

As of August 2025, 54 flights take off from Chicago O'Hare Intl Airport and land in London each day. The most common flight departure time for this route is 21:00, with 66% of daily flights taking off in the evening.

How many flights depart from Chicago O'Hare Intl Airport to London on average per week?

The number of flights available between Chicago O'Hare Intl Airport and London is 381 per week as of August 2025. The most frequent departure day is Wed, with 15% of weekly flights leaving on this day.

When to book flights from Chicago O'Hare Intl Airport to London

Cheap Chicago O'Hare Intl Airport to London (ORD to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to London

Best price found

Fastest flight time

Direct flights

Airports in London

How far is Chicago O'Hare Intl to London by plane?

When did momondo last update prices for flights from Chicago O'Hare Intl Airport to London?

How many operators does momondo search for flights from Chicago O'Hare Intl Airport to London?

How old do you have to be to fly from Chicago O'Hare Intl Airport to London?

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

What is the most popular plane model from Chicago O'Hare Intl Airport to London?

What is the most popular airline from Chicago O'Hare Intl Airport to London?

Best airlines flying from Chicago O'Hare Intl Airport to London

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to London with momondo

Finnair Flights From Chicago O'Hare Intl Airport to London

United Airlines Flights From Chicago O'Hare Intl Airport 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

Daily price changes in your inbox - only with Price Alerts.