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Cheap flights from Chicago O'Hare Intl Airport to London Heathrow Airport from £159

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 O'Hare Intl Airport to London Heathrow Airport departing on 18/2. 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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Find the cheapest flights from Chicago O'Hare Intl Airport to London

Cheap return flights

These are some of the best return flight deals from Chicago O'Hare Intl Airport to London that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Chicago O'Hare Intl Airport to London.

Cheap last-minute flights

Planning a quick getaway from Chicago O'Hare Intl Airport to London? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to London, so you can enjoy a seamless trip without stopovers.

Cheap bus & train deals from Chicago O'Hare Intl Airport to London

Find recent round-trip train or bus tickets from Chicago O'Hare Intl Airport to London.

All round-trip flight deals to London

The cheapest plane tickets to London found on KAYAK recently.
20:25 - 21:35ORD-LHR
19h 10m1 stop
18:30 - 15:30LHR-ORD
27h 00m1 stop
£375TAP AIR PORTUGAL
Find Deal
Sun, 19 Jan - Tue, 21 Jan
19:40 - 16:00ORD-LHR
14h 20m1 stop
10:20 - 18:50LHR-ORD
13h 30m1 stop
£380Scandinavian Airlines
Find Deal
Fri, 7 Mar - Mon, 10 Mar
19:40 - 16:00ORD-LHR
14h 20m1 stop
07:05 - 18:50LHR-ORD
16h 45m2 stops
£383Scandinavian Airlines
Find Deal
Fri, 7 Mar - Mon, 10 Mar
22:55 - 12:45ORD-LHR
7h 50mdirect
10:20 - 17:50LHR-ORD
13h 30m1 stop
£498Finnair
Find Deal
Mon, 31 Mar - Wed, 9 Apr
21:45 - 11:30ORD-LHR
7h 45mdirect
10:15 - 14:05LHR-ORD
8h 50mdirect
£506British Airways
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Wed, 5 Mar - Fri, 14 Mar
17:18 - 09:20ORD-LHR
10h 02m1 stop
11:55 - 15:45LHR-ORD
8h 50mdirect
£509Iberia
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Sun, 2 Mar - Tue, 25 Mar
15:35 - 07:10ORD-LHR
10h 35m1 stop
08:55 - 17:15LHR-ORD
13h 20m1 stop
£512United Airlines
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Wed, 12 Mar - Fri, 21 Mar
21:10 - 11:15ORD-LHR
8h 05mdirect
08:55 - 16:15LHR-ORD
13h 20m1 stop
£513United Airlines
Find Deal
Wed, 8 Jan - Tue, 28 Jan
18:35 - 08:15ORD-LHR
7h 40mdirect
11:55 - 14:45LHR-ORD
8h 50mdirect
£516British Airways
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Tue, 14 Jan - Tue, 21 Jan
22:00 - 11:40ORD-LHR
7h 40mdirect
14:10 - 17:00LHR-ORD
8h 50mdirect
£517Finnair
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Tue, 14 Jan - Fri, 24 Jan
18:30 - 10:50ORD-LHR
10h 20m1 stop
£159Icelandair
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Tue, 18 Feb
18:30 - 19:30ORD-LHR
19h 00m1 stop
£159Icelandair
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Wed, 15 Jan
17:00 - 06:50ORD-LHR
7h 50mdirect
£314Iberia
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Mon, 20 Jan
17:00 - 06:50ORD-LHR
7h 50mdirect
£315Iberia
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Wed, 15 Jan
21:45 - 11:30ORD-LHR
7h 45mdirect
£316Finnair
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Tue, 28 Jan
17:00 - 06:50ORD-LHR
7h 50mdirect
£319Finnair
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Sun, 12 Jan
17:00 - 06:50ORD-LHR
7h 50mdirect
£319British Airways
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Sun, 16 Feb
22:00 - 11:40ORD-LHR
7h 40mdirect
£320British Airways
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Tue, 14 Jan
17:50 - 07:55ORD-LHR
8h 05mdirect
£371United Airlines
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Wed, 1 Jan
18:50 - 07:55ORD-LHR
8h 05mdirect
£376United Airlines
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Fri, 14 Mar
20:25 - 06:30ORD-LHR
28h 05m1 stop
06:00 - 14:05LHR-ORD
14h 05m1 stop
Tue, 24 Dec - Wed, 29 Jan
08:45 - 05:55ORD-LHR
15h 10m1 stop
08:25 - 17:53LHR-ORD
15h 28m1 stop
£706JetBlue
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Tue, 24 Dec - Thu, 30 Jan
12:45 - 09:40ORD-LHR
14h 55m1 stop
06:30 - 10:10LHR-ORD
33h 40m2 stops
£707United Airlines
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Tue, 24 Dec - Wed, 29 Jan
16:55 - 09:20ORD-LHR
10h 25m1 stop
08:10 - 20:04LHR-ORD
17h 54m2 stops
£717Iberia
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Tue, 24 Dec - Tue, 28 Jan
13:25 - 08:45ORD-LHR
13h 20m1 stop
15:45 - 18:45LHR-ORD
9h 00mdirect
£725British Airways
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Tue, 24 Dec - Fri, 17 Jan
16:55 - 09:20ORD-LHR
10h 25m1 stop
08:40 - 19:50LHR-ORD
17h 10m1 stop
£733Iberia
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Tue, 24 Dec - Thu, 9 Jan
21:02 - 12:00ORD-LHR
32h 58m1 stop
10:05 - 19:26LHR-ORD
15h 21m1 stop
£741British Airways
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Mon, 23 Dec - Wed, 29 Jan
21:12 - 08:45ORD-LHR
29h 33m2 stops
06:30 - 13:25LHR-ORD
12h 55m1 stop
£836Lufthansa
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Mon, 23 Dec - Wed, 29 Jan
15:55 - 09:45ORD-LHR
11h 50m1 stop
11:10 - 18:25LHR-ORD
13h 15m1 stop
£982Lufthansa
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Sun, 22 Dec - Wed, 5 Feb
15:55 - 08:05ORD-LHR
10h 10m1 stop
15:45 - 18:45LHR-ORD
9h 00mdirect
£1,095Aer Lingus
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Sat, 21 Dec - Thu, 30 Jan
22:45 - 11:30ORD-LHR
7h 45mdirect
15:45 - 19:45LHR-ORD
9h 00mdirect
£496British Airways
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Wed, 12 Mar - Tue, 18 Mar
17:00 - 06:50ORD-LHR
7h 50mdirect
11:00 - 13:55LHR-ORD
8h 55mdirect
£498British Airways
Find Deal
Sun, 12 Jan - Tue, 21 Jan
21:45 - 11:30ORD-LHR
7h 45mdirect
11:00 - 13:55LHR-ORD
8h 55mdirect
£499British Airways
Find Deal
Tue, 11 Feb - Tue, 18 Feb
16:55 - 06:50ORD-LHR
7h 55mdirect
15:30 - 18:15LHR-ORD
8h 45mdirect
£501British Airways
Find Deal
Wed, 2 Apr - Tue, 8 Apr
20:30 - 10:20ORD-LHR
7h 50mdirect
14:25 - 17:00LHR-ORD
8h 35mdirect
£507Iberia
Find Deal
Tue, 1 Apr - Wed, 30 Apr
21:45 - 11:30ORD-LHR
7h 45mdirect
11:00 - 13:55LHR-ORD
8h 55mdirect
£511Iberia
Find Deal
Wed, 22 Jan - Wed, 29 Jan
17:00 - 06:50ORD-LHR
7h 50mdirect
11:00 - 13:55LHR-ORD
8h 55mdirect
£513Finnair
Find Deal
Sun, 12 Jan - Tue, 21 Jan
17:00 - 06:50ORD-LHR
7h 50mdirect
11:00 - 13:55LHR-ORD
8h 55mdirect
£513Finnair
Find Deal
Sun, 12 Jan - Tue, 21 Jan
21:10 - 11:15ORD-LHR
8h 05mdirect
10:25 - 13:50LHR-ORD
9h 25mdirect
£526United Airlines
Find Deal
Wed, 8 Jan - Thu, 6 Feb
21:10 - 11:15ORD-LHR
8h 05mdirect
13:35 - 17:00LHR-ORD
9h 25mdirect
£527United Airlines
Find Deal
Sun, 12 Jan - Tue, 21 Jan

JetBlue flights from Chicago O'Hare Intl Airport to London Heathrow Airport

Our best JetBlue deals on Chicago O'Hare Intl Airport to London Heathrow Airport flight tickets
JetBlue
31 Jan
ORD17:05Chicago O'Hare Intl
10h 25m
1 stop
LHR09:30London Heathrow
9 Feb
LHR07:25London Heathrow
14h 18m
1 stop
ORD15:43Chicago O'Hare Intl
JetBlue
12 Jan
ORD09:05Chicago O'Hare Intl
14h 50m
1 stop
LHR05:55London Heathrow
26 Jan
LHR07:25London Heathrow
14h 19m
1 stop
ORD15:44Chicago O'Hare Intl
JetBlue
1 Feb
ORD09:55Chicago O'Hare Intl
14h 00m
1 stop
LHR05:55London Heathrow
8 Feb
LHR08:25London Heathrow
15h 28m
1 stop
ORD17:53Chicago O'Hare Intl

British Airways flights from Chicago O'Hare Intl Airport to London Heathrow Airport

Our best British Airways deals on Chicago O'Hare Intl Airport to London Heathrow Airport flight tickets
British Airways
5 Mar
ORD21:45Chicago O'Hare Intl
7h 45m
LHR11:30London Heathrow
14 Mar
LHR10:15London Heathrow
8h 50m
ORD14:05Chicago O'Hare Intl
British Airways
14 Jan
ORD18:35Chicago O'Hare Intl
7h 40m
LHR08:15London Heathrow
21 Jan
LHR11:55London Heathrow
8h 50m
ORD14:45Chicago O'Hare Intl
British Airways
29 Dec
ORD18:25Chicago O'Hare Intl
7h 50m
LHR08:15London Heathrow
10 Jan
LHR08:40London Heathrow
17h 10m
1 stop
ORD19:50Chicago O'Hare Intl

See travel insights to London from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to London Heathrow Airport

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 Heathrow Airport?

In general, February is the cheapest month to fly from Chicago O'Hare Intl Airport to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £518. The month of September is another great option to travel to London Heathrow Airport, with average flight prices from Chicago O'Hare Intl Airport averaging around £536.

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

On average, the least expensive day to fly to London Heathrow Airport from Chicago O'Hare Intl Airport is on a Thursday. momondo users have found tickets for Thursday departures for as low as £609. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Sunday is £791.

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

According to our data, the cheapest time of day to fly to London Heathrow Airport is at midday. momondo users have found flights departing from Chicago O'Hare Intl Airport to London Heathrow Airport at midday for as low as £608. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are £684 on average. Flights to London Heathrow Airport from Chicago O'Hare Intl Airport in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

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

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

Most flyers found that booking tickets 8 days in advance of their planned departure date is the best time to get cheap flights to London Heathrow Airport. During this timeframe, flight prices are around £632. However, in the past 72 hours, people saw flights from Chicago O'Hare Intl Airport for as low as £416.

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

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

You could potentially save up to 47% on your flight if you consider stops on a Chicago O'Hare Intl Airport to London Heathrow Airport flight.

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

As of December 2024, prices for Chicago O'Hare Intl Airport to London Heathrow Airport flights are approximately 13% more expensive when compared to flights at the same time last year.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to London Heathrow Airport 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 Heathrow Airport (ORD to LHR) flight deals and tips

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

Best price found

£159

Fastest flight time

7h 35m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from Chicago O'Hare Intl Airport in the past 72 hours is £159. The best return flight deal from Chicago O'Hare Intl Airport to London Heathrow Airport found on momondo in the last 72 hours is £375.
The fastest flight from Chicago O'Hare Intl Airport to London Heathrow Airport takes 7h 35m
Direct flights go from Chicago O'Hare Intl Airport to London Heathrow Airport every day.

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

    The distance between Chicago O'Hare Intl and London Heathrow is about 3939.2 mi. 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 Heathrow Airport?

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

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

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

    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 Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents you'll need for your trip to London Heathrow Airport 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 Heathrow Airport. 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 Heathrow Airport?

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


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

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom £321Free CancellationRating
6.8
7,087 reviews
Search Lufthansa flights
Scandinavian AirlinesPriceFrom £343Free CancellationRating
7.3
1,308 reviews
Search Scandinavian Airlines flights
American AirlinesPriceFrom £405Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
FinnairPriceFrom £454Free CancellationRating
7.7
1,285 reviews
Search Finnair flights
Aer LingusPriceFrom £469Free CancellationRating
7.1
1,078 reviews
Search Aer Lingus flights
British AirwaysPriceFrom £492Free CancellationRating
6.6
6,817 reviews
Search British Airways flights
IberiaPriceFrom £519Free CancellationRating
7.0
2,655 reviews
Search Iberia flights
United AirlinesPriceFrom £533Free CancellationRating
7.4
9,055 reviews
Search United Airlines flights
  • Finnair Flights From Chicago O'Hare Intl Airport to London Heathrow Airport

    Finnair flies from Chicago O'Hare Intl Airport to London Heathrow Airport around 28 times per week, with 1,285 momondo users rating the airline 7.7/10. The cheapest Finnair deal from Chicago O'Hare Intl Airport to London Heathrow Airport in the last 72 hours was £576 (round-trip), much lower than the average airfare cost of £927 for Finnair flights on this route.

  • United Airlines Flights From Chicago O'Hare Intl Airport to London Heathrow Airport

    Another popular option for Chicago O'Hare Intl Airport to London Heathrow Airport flights is United Airlines (7.4/10, 9,055 ratings). United Airlines flies from Chicago O'Hare Intl Airport to London Heathrow Airport around 14 times per week, with deals starting from £676 round-trip and rising to an average price of around £883.


Why use momondo?

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

It is quick and easy to find Chicago to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

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

Yes. All flights to London from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.

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?

Of course. momondo tracks the price of Chicago to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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