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Cheap flights from Chicago to London from £173

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 5/3. 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 to London

Cheap return flights

These are some of the best return flight deals from Chicago 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 to London.

Cheap last-minute flights

Planning a quick getaway from Chicago 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 to London

Find recent return train or bus tickets from Chicago to London.

All return flight deals from Chicago to London

The cheapest plane tickets from Chicago to London found on KAYAK recently.
18:30 - 10:55ORD-LGW
10h 25m1 stop
11:55 - 18:20LGW-ORD
11h 25m1 stop
£364Icelandair
Find Deal
Tue, 4 Mar - Wed, 12 Mar
18:30 - 10:50ORD-LHR
10h 20m1 stop
20:40 - 18:20LHR-ORD
26h 40m1 stop
£365Icelandair
Find Deal
Tue, 4 Mar - Wed, 12 Mar
14:55 - 07:50ORD-LHR
10h 55m1 stop
11:55 - 15:45LHR-ORD
8h 50mdirect
£440Iberia
Find Deal
Tue, 4 Mar - Wed, 12 Mar
21:15 - 10:00ORD-LHR
7h 45mdirect
13:50 - 17:40LHR-ORD
8h 50mdirect
£471Iberia
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Sun, 9 Mar - Fri, 21 Mar
22:20 - 12:10ORD-LHR
7h 50mdirect
10:20 - 17:50LHR-ORD
13h 30m1 stop
£487Finnair
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Tue, 15 Apr - Wed, 7 May
17:00 - 06:50ORD-LHR
7h 50mdirect
11:00 - 13:55LHR-ORD
8h 55mdirect
£508Finnair
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Sun, 2 Feb - Tue, 11 Feb
21:15 - 10:00ORD-LHR
7h 45mdirect
11:55 - 15:45LHR-ORD
8h 50mdirect
£511British Airways
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Tue, 11 Mar - Tue, 18 Mar
16:45 - 18:50ORD-LGW
20h 05m1 stop
10:55 - 10:51LGW-ORD
28h 56m2 stops
£514British Airways
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Tue, 4 Mar - Wed, 12 Mar
15:55 - 09:25ORD-LCY
11h 30m1 stop
10:00 - 21:05LCY-ORD
16h 05m1 stop
£572Lufthansa
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Tue, 25 Feb - Thu, 27 Mar
15:55 - 09:25ORD-LCY
11h 30m1 stop
10:00 - 21:05LCY-ORD
16h 05m1 stop
£572Lufthansa
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Tue, 25 Feb - Wed, 26 Mar
06:00 - 08:05ORD-LGW
20h 05m1 stop
Wed, 5 Mar
16:45 - 12:50ORD-LHR
15h 05m1 stop
£189WestJet
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Thu, 27 Mar
18:30 - 10:50ORD-LHR
10h 20m1 stop
£206Icelandair
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Sun, 23 Feb
18:30 - 10:55ORD-LGW
10h 25m1 stop
£206Icelandair
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Sun, 23 Feb
15:55 - 09:25ORD-LCY
11h 30m1 stop
£262Lufthansa
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Wed, 12 Feb
16:00 - 09:40ORD-LHR
11h 40m1 stop
£268Lufthansa
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Tue, 22 Apr
22:45 - 11:30ORD-LHR
7h 45mdirect
£314British Airways
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Wed, 12 Mar
21:15 - 10:00ORD-LHR
7h 45mdirect
£320Iberia
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Sun, 9 Mar
21:15 - 10:55ORD-LHR
7h 40mdirect
£327British Airways
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Tue, 22 Apr
11:40 - 10:15ORD-LGW
16h 35m2 stops
£346Iberia
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Tue, 28 Jan
18:30 - 19:30ORD-LHR
19h 00m1 stop
20:40 - 17:20LHR-ORD
26h 40m1 stop
£383Icelandair
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Fri, 24 Jan - Sun, 26 Jan
18:30 - 10:55ORD-LGW
10h 25m1 stop
11:55 - 17:20LGW-ORD
11h 25m1 stop
£384Icelandair
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Fri, 24 Jan - Fri, 31 Jan
21:10 - 11:15ORD-LHR
8h 05mdirect
13:45 - 16:15LHR-ORD
32h 30m1 stop
£528United Airlines
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Wed, 22 Jan - Wed, 29 Jan
21:10 - 11:15ORD-LHR
8h 05mdirect
08:55 - 16:15LHR-ORD
13h 20m1 stop
£529United Airlines
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Wed, 22 Jan - Wed, 29 Jan
22:00 - 11:40ORD-LHR
7h 40mdirect
11:55 - 14:45LHR-ORD
8h 50mdirect
£534Finnair
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Wed, 22 Jan - Wed, 29 Jan
18:35 - 08:15ORD-LHR
7h 40mdirect
11:55 - 14:45LHR-ORD
8h 50mdirect
£535Finnair
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Wed, 22 Jan - Wed, 29 Jan
17:20 - 09:20ORD-LHR
10h 00m1 stop
19:10 - 15:30LHR-ORD
25h 20m2 stops
£541Iberia
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Wed, 22 Jan - Mon, 10 Mar
17:20 - 16:25ORD-LHR
17h 05m2 stops
19:40 - 14:30LHR-ORD
24h 50m1 stop
£597British Airways
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Sun, 26 Jan - Sat, 1 Feb
22:00 - 11:40ORD-LHR
7h 40mdirect
14:10 - 17:00LHR-ORD
8h 50mdirect
£619British Airways
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Fri, 24 Jan - Sun, 26 Jan
21:45 - 11:30ORD-LHR
7h 45mdirect
15:45 - 18:45LHR-ORD
9h 00mdirect
£897Iberia
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Sun, 26 Jan - Thu, 30 Jan
17:00 - 06:50ORD-LHR
7h 50mdirect
13:50 - 17:40LHR-ORD
8h 50mdirect
£437Iberia
Find Deal
Tue, 4 Mar - Wed, 12 Mar
18:26 - 08:15ORD-LHR
7h 49mdirect
15:45 - 19:45LHR-ORD
9h 00mdirect
£440Iberia
Find Deal
Tue, 4 Mar - Wed, 12 Mar
19:30 - 08:15ORD-LHR
7h 45mdirect
13:50 - 17:40LHR-ORD
8h 50mdirect
£470Iberia
Find Deal
Sun, 9 Mar - Wed, 19 Mar
17:00 - 06:50ORD-LHR
7h 50mdirect
11:00 - 14:55LHR-ORD
8h 55mdirect
£484British Airways
Find Deal
Tue, 4 Mar - Wed, 12 Mar
17:00 - 06:50ORD-LHR
7h 50mdirect
15:45 - 19:45LHR-ORD
9h 00mdirect
£488British Airways
Find Deal
Tue, 4 Mar - Wed, 12 Mar
21:45 - 11:30ORD-LHR
7h 45mdirect
15:45 - 18:45LHR-ORD
9h 00mdirect
£507Finnair
Find Deal
Sun, 2 Feb - Tue, 11 Feb
17:00 - 06:50ORD-LHR
7h 50mdirect
11:00 - 13:55LHR-ORD
8h 55mdirect
£508Finnair
Find Deal
Sun, 2 Feb - Tue, 11 Feb
18:50 - 07:55ORD-LHR
8h 05mdirect
13:35 - 18:00LHR-ORD
9h 25mdirect
£541United Airlines
Find Deal
Tue, 18 Mar - Wed, 26 Mar
22:10 - 11:15ORD-LHR
8h 05mdirect
10:25 - 14:50LHR-ORD
9h 25mdirect
£541United Airlines
Find Deal
Wed, 12 Mar - Wed, 26 Mar
21:10 - 11:15ORD-LHR
8h 05mdirect
10:25 - 14:50LHR-ORD
9h 25mdirect
£636Lufthansa
Find Deal
Fri, 7 Mar - Fri, 14 Mar

Delta flights from Chicago to London

Our best Delta deals on Chicago to London flight tickets
Delta
2 Feb
ORD14:03Chicago O'Hare Intl
10h 22m
1 stop
LHR06:25London Heathrow
11 Feb
LHR06:30London Heathrow
15h 43m
2 stops
ORD16:13Chicago O'Hare Intl
Delta
27 Jan
ORD16:55Chicago O'Hare Intl
11h 40m
1 stop
LHR10:35London Heathrow
4 Feb
LHR06:30London Heathrow
15h 43m
2 stops
ORD16:13Chicago O'Hare Intl
Delta
26 Feb
MDW12:44Chicago Midway
11h 36m
1 stop
LHR06:20London Heathrow
28 Mar
LHR16:10London Heathrow
21h 59m
1 stop
MDW09:09Chicago Midway

Icelandair flights from Chicago to London

Our best Icelandair deals on Chicago to London flight tickets
Icelandair
4 Mar
ORD18:30Chicago O'Hare Intl
10h 25m
1 stop
LGW10:55London Gatwick
12 Mar
LGW11:55London Gatwick
11h 25m
1 stop
ORD18:20Chicago O'Hare Intl
Icelandair
4 Mar
ORD18:30Chicago O'Hare Intl
10h 20m
1 stop
LHR10:50London Heathrow
12 Mar
LHR20:40London Heathrow
26h 40m
1 stop
ORD18:20Chicago O'Hare Intl
Icelandair
4 Mar
ORD18:30Chicago O'Hare Intl
10h 20m
1 stop
LHR10:50London Heathrow
12 Mar
LHR20:40London Heathrow
26h 40m
1 stop
ORD18:20Chicago O'Hare Intl

See travel insights to London from

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?

The cheapest month to fly to London from Chicago is in February. Flight prices, which tend to average around £519, are often lower during this time because this is during the off-season. The month of November is another great option to travel to London, with average flight prices from Chicago averaging around £539.

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

Our data shows that Saturday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £559. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Chicago to London for around £680.

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 evening when flights can be purchased for as low as £569. Flights at midday are often more expensive, with an average ticket price of £894.

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 3 weeks ahead of your departure date. In general, you can expect to find flights to London for around £656 when searching 3 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Chicago for as low as £605 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.

How have Chicago to London flight prices changed over time?

As of January 2025, prices for Chicago to London flights are approximately 26% 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

£173

Fastest flight time

7h 30m

Direct flights

Every day

Airports in London

5 airports
The best one-way flight to London from Chicago in the past 72 hours is £173. The best return flight deal from Chicago to London found on momondo in the last 72 hours is £364.
The fastest flight from Chicago to London takes 7h 30m
Direct flights go from Chicago to London every day.
There are 5 airports near London: London City (LCY), London Heathrow (LHR), London Luton (LTN), London Stansted (STN), London Gatwick (LGW)

  • 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 30m.

  • 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?

  • 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?

  • 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
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom £332Free CancellationRating
6.7
7,111 reviews
Search Lufthansa flights
FinnairPriceFrom £390Free CancellationRating
7.6
1,286 reviews
Search Finnair flights
American AirlinesPriceFrom £419Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Aer LingusPriceFrom £485Free CancellationRating
7.1
1,082 reviews
Search Aer Lingus flights
British AirwaysPriceFrom £509Free CancellationRating
6.6
6,834 reviews
Search British Airways flights
IberiaPriceFrom £538Free CancellationRating
7.0
2,646 reviews
Search Iberia flights
United AirlinesPriceFrom £544Free CancellationRating
7.4
8,985 reviews
Search United Airlines flights
  • Finnair Flights From Chicago to London

    Finnair flight deals from Chicago to London start from £478 round-trip. Over the 24 Finnair flights for this route in a normal week, average airfare is usually £927 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 £666 round-trip, depending on your selected dates, with average United Airlines deals seen on momondo around £883. United Airlines operates 14 flights to London from Chicago in an average week. Users have rated it 7.4/10 across 8,984 reviews.


Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Slough
Southend-on-Sea
Ipswich
Gatwick
Maidstone
Margate
Hounslow
Canterbury
Ilford
Colchester
Dartford
Winchester
Chichester
Bishop's Stortford
Guildford
Hayes
Crawley

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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Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London