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Cheap flights from Chicago to London from £160

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 7/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap return flights

Scandinavian Airlines Logo
20:20 - 09:20ORD-LHR
32h 00m1 stop
Scandinavian Airlines Logo
06:40 - 16:45LHR-ORD
16h 05m2 stops
£234Scandinavian Airlines
Find Deal
Fri, 31 Oct - Mon, 3 Nov
Scandinavian Airlines Logo
20:20 - 18:50ORD-LHR
41h 30m2 stops
Scandinavian Airlines Logo
06:40 - 16:45LHR-ORD
16h 05m2 stops
£240Scandinavian Airlines
Find Deal
Fri, 31 Oct - Mon, 3 Nov
Scandinavian Airlines Logo
19:20 - 08:55ORD-LHR
31h 35m2 stops
Scandinavian Airlines Logo
06:40 - 16:45LHR-ORD
16h 05m1 stop
£273Scandinavian Airlines
Find Deal
Mon, 17 Nov - Thu, 20 Nov
Icelandair Logo
18:30 - 19:30ORD-LHR
19h 00m1 stop
Icelandair Logo
20:35 - 17:20LHR-ORD
26h 45m1 stop
£354Icelandair
Find Deal
Wed, 26 Nov - Mon, 1 Dec
Virgin Atlantic Logo
19:21 - 13:10MDW-LHR
11h 49m1 stop
Virgin Atlantic Logo
13:05 - 21:44LHR-MDW
14h 39m1 stop
£383Virgin Atlantic
Find Deal
Sun, 3 Aug - Tue, 12 Aug
Delta Logo
17:05 - 13:30MDW-LHR
14h 25m1 stop
Delta Logo
08:40 - 18:37LHR-MDW
15h 57m2 stops
£392Delta
Find Deal
Wed, 6 Aug - Wed, 13 Aug
Virgin Atlantic Logo
10:30 - 06:45MDW-LHR
14h 15m2 stops
Virgin Atlantic Logo
08:40 - 21:44LHR-MDW
19h 04m2 stops
£395Virgin Atlantic
Find Deal
Tue, 5 Aug - Thu, 21 Aug
Delta Logo
18:47 - 13:30MDW-LHR
12h 43m1 stop
Delta Logo
13:05 - 21:44LHR-MDW
14h 39m1 stop
£396Delta
Find Deal
Sun, 3 Aug - Tue, 12 Aug
KLM Logo
13:05 - 06:45MDW-LHR
11h 40m1 stop
KLM Logo
12:20 - 18:36LHR-MDW
12h 16m1 stop
£484KLM
Find Deal
Tue, 14 Oct - Wed, 12 Nov
KLM Logo
13:05 - 06:25MDW-LHR
11h 20m1 stop
KLM Logo
12:10 - 18:07LHR-MDW
11h 57m1 stop
£502KLM
Find Deal
Tue, 25 Nov - Sat, 29 Nov

Scandinavian Airlines flights from Chicago to London Heathrow Airport

Our best Scandinavian Airlines deals on Chicago to London Heathrow Airport flight tickets
Scandinavian Airlines
31 Oct
ORD20:20Chicago O'Hare Intl
32h 00m
1 stop
LHR09:20London Heathrow
3 Nov
LHR06:40London Heathrow
16h 05m
2 stops
ORD16:45Chicago O'Hare Intl
Scandinavian Airlines
31 Oct
ORD20:20Chicago O'Hare Intl
41h 30m
2 stops
LHR18:50London Heathrow
3 Nov
LHR06:40London Heathrow
16h 05m
2 stops
ORD16:45Chicago O'Hare Intl
Scandinavian Airlines
17 Nov
ORD19:20Chicago O'Hare Intl
31h 35m
2 stops
LHR08:55London Heathrow
20 Nov
LHR06:40London Heathrow
16h 05m
1 stop
ORD16:45Chicago O'Hare Intl

Virgin Atlantic flights from Chicago to London Heathrow Airport

Our best Virgin Atlantic deals on Chicago to London Heathrow Airport flight tickets
Virgin Atlantic
3 Aug
MDW19:21Chicago Midway
11h 49m
1 stop
LHR13:10London Heathrow
12 Aug
LHR13:05London Heathrow
14h 39m
1 stop
MDW21:44Chicago Midway
Virgin Atlantic
5 Aug
MDW10:30Chicago Midway
14h 15m
2 stops
LHR06:45London Heathrow
21 Aug
LHR08:40London Heathrow
19h 04m
2 stops
MDW21:44Chicago Midway
Virgin Atlantic
19 Aug
MDW19:17Chicago Midway
11h 53m
1 stop
LHR13:10London Heathrow
4 Sept
LHR09:20London Heathrow
15h 17m
2 stops
MDW18:37Chicago Midway

See travel insights to London from

How to get the cheapest flight ticket from Chicago 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 typical price of a round-trip flight between Chicago and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

In general, November is the cheapest month to fly from Chicago to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £484. The month of April is another great option to travel to London Heathrow Airport, with average flight prices from Chicago averaging around £491.

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 is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £532. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Saturday is £666.

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 to London Heathrow Airport at midday for as low as £565. 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 morning when prices are £630 on average. Flights to London Heathrow Airport from Chicago in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Chicago to London Heathrow flight route?

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

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

You are more likely to see cheaper flights to London Heathrow Airport from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £588 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Chicago for as low as £524 on momondo.

What cabin class options are available on Chicago to London Heathrow flights?

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

You could potentially save up to 39% on your flight if you consider stops on a Chicago to London Heathrow Airport flight.

How have Chicago to London Heathrow Airport flight prices changed over time?

As of July 2025, prices for Chicago to London Heathrow Airport flights are approximately 39% cheaper when compared to flights at the same time last year.

When to book flights from Chicago to London Heathrow Airport

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

Cheap Chicago to London Heathrow Airport (CHI to LHR) flight deals and tips

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

Best price found

£160

Fastest flight time

10h 30m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from Chicago in the past 72 hours is £160. The best return flight deal from Chicago to London Heathrow Airport found on momondo in the last 72 hours is £234.
The fastest flight from Chicago to London Heathrow Airport takes 10h 30m
Direct flights go from Chicago to London Heathrow Airport every day.

  • How far is Chicago to London Heathrow by plane?

    A flight from Chicago to London Heathrow will travel around 3933.5 mi. 11h 20m is a normal flight duration for this route.

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

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

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

  • How old do you have to be to fly from Chicago 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 to London Heathrow Airport.

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

    The travel and health documents required for your trip to London Heathrow Airport 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 Heathrow Airport. 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 Heathrow Airport?

  • What is the most popular airline from Chicago to London Heathrow Airport?


Best airlines flying from Chicago to London Heathrow Airport

Compare and see reviews for airlines that fly from Chicago to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
Aer LingusPriceFrom £405Free CancellationRating
7.1
1,144 reviews
Search Aer Lingus flights
FinnairPriceFrom £407Free CancellationRating
7.6
1,304 reviews
Search Finnair flights
IberiaPriceFrom £439Free CancellationRating
7.0
2,813 reviews
Search Iberia flights
United AirlinesPriceFrom £455Free CancellationRating
7.4
8,845 reviews
Search United Airlines flights
British AirwaysPriceFrom £457Free CancellationRating
6.6
7,093 reviews
Search British Airways flights
LufthansaPriceFrom £477Free CancellationRating
6.8
7,207 reviews
Search Lufthansa flights
American AirlinesPriceFrom £505Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
  • Finnair Flights From Chicago to London Heathrow Airport

    Finnair is one of the most popular airlines flying from Chicago to London Heathrow Airport, operating 25 flights/week on average for this route. A good Finnair flight deal for Chicago to London Heathrow Airport starts from £556 round-trip, up to an average price of £808. Our users have rated Finnair at 7.6/10.

  • United Airlines Flights From Chicago to London Heathrow Airport

    The best United Airlines deal for Chicago to London Heathrow Airport flight tickets found on momondo in the last 72 hours was £621, round-trip. It should be noted that an average United Airlines flight deal for this route in this time was higher, at £942 round-trip. United Airlines operates 21 flights out of Chicago into London Heathrow Airport in an average week, so prices vary by time and availability. 8,844 United Airlines reviews by users on momondo have scored the airline at 7.4/10.


Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
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Slough
Northampton
Swindon
Stratford-upon-Avon
Maidstone
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Gatwick
Ipswich
Ilford
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Hounslow
Margate
Colchester
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Worthing
Winchester

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?

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?

Once all potential Chicago to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes. momondo can track prices for Chicago to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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