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Cheap flights from Chicago O'Hare Intl Airport to the United Kingdom from £134

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 the United Kingdom departing on 8/9. 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 the United Kingdom

Cheap return flights

Logo
10:27 - 06:55ORD-LGW
14h 28m1 stop
Logo
14:00 - 22:22LGW-ORD
14h 22m1 stop
£318
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Mon, 18 Aug - Tue, 26 Aug
Scandinavian Airlines Logo
19:20 - 16:25ORD-LHR
15h 05m2 stops
Scandinavian Airlines Logo
10:20 - 16:55LHR-ORD
12h 35m1 stop
£320Scandinavian Airlines
Find Deal
Fri, 16 Jan - Sun, 18 Jan
Scandinavian Airlines Logo
19:20 - 16:25ORD-LHR
15h 05m2 stops
Scandinavian Airlines Logo
10:20 - 16:55LHR-ORD
12h 35m1 stop
£321Scandinavian Airlines
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Fri, 16 Jan - Sun, 18 Jan
Aer Lingus Logo
15:45 - 09:05ORD-LHR
11h 20m1 stop
Aer Lingus Logo
08:50 - 14:00LHR-ORD
11h 10m1 stop
£354Aer Lingus
Find Deal
Sun, 10 Aug - Tue, 19 Aug
Aer Lingus Logo
15:45 - 08:00ORD-LHR
10h 15m1 stop
Aer Lingus Logo
13:25 - 19:00LHR-ORD
11h 35m1 stop
£356Aer Lingus
Find Deal
Sun, 10 Aug - Fri, 29 Aug
Icelandair Logo
22:15 - 14:40ORD-LGW
10h 25m1 stop
Icelandair Logo
15:40 - 18:15LGW-ORD
32h 35m1 stop
£362Icelandair
Find Deal
Wed, 8 Oct - Mon, 20 Oct
British Airways Logo
22:35 - 12:15ORD-LHR
7h 40mdirect
British Airways Logo
06:20 - 15:45LHR-ORD
15h 25m1 stop
£364British Airways
Find Deal
Mon, 11 Aug - Fri, 22 Aug
British Airways Logo
21:15 - 11:05ORD-LHR
7h 50mdirect
British Airways Logo
06:20 - 15:45LHR-ORD
15h 25m1 stop
£365British Airways
Find Deal
Tue, 26 Aug - Tue, 2 Sep
Icelandair Logo
22:15 - 14:40ORD-LGW
10h 25m1 stop
Icelandair Logo
15:40 - 21:15LGW-ORD
11h 35m1 stop
£366Icelandair
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Fri, 12 Sep - Fri, 19 Sep
Iberia Logo
16:30 - 20:00ORD-LGW
21h 30m1 stop
Iberia Logo
10:40 - 19:41LGW-ORD
15h 01m1 stop
£379Iberia
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Sun, 21 Sep - Tue, 30 Sep

Air Canada flights from Chicago O'Hare Intl Airport to United Kingdom

Our best Air Canada deals on Chicago O'Hare Intl Airport to United Kingdom flight tickets
Air Canada
10 Aug
ORD10:40Chicago O'Hare Intl
17h 20m
1 stop
LHR10:00London Heathrow
28 Aug
LHR06:50London Heathrow
14h 05m
2 stops
ORD14:55Chicago O'Hare Intl
£360
Find similar
Air Canada
10 Aug
ORD14:07Chicago O'Hare Intl
10h 23m
1 stop
LHR06:30London Heathrow
19 Aug
LHR08:30London Heathrow
8h 55m
ORD11:25Chicago O'Hare Intl
£377
Find similar
Air Canada
10 Aug
ORD14:07Chicago O'Hare Intl
10h 23m
1 stop
LHR06:30London Heathrow
4 Sept
LHR06:50London Heathrow
14h 05m
2 stops
ORD14:55Chicago O'Hare Intl
£384
Find similar

Finnair flights from Chicago O'Hare Intl Airport to United Kingdom

Our best Finnair deals on Chicago O'Hare Intl Airport to United Kingdom flight tickets
Finnair
10 Aug
ORD20:35Chicago O'Hare Intl
7h 55m
LHR10:30London Heathrow
28 Aug
LHR10:20London Heathrow
13h 30m
1 stop
ORD17:50Chicago O'Hare Intl
£367
Find similar
Finnair
10 Aug
ORD20:35Chicago O'Hare Intl
7h 55m
LHR10:30London Heathrow
19 Aug
LHR14:25London Heathrow
8h 35m
ORD17:00Chicago O'Hare Intl
£389
Find similar
Finnair
10 Aug
ORD22:35Chicago O'Hare Intl
7h 40m
LHR12:15London Heathrow
29 Aug
LHR14:25London Heathrow
8h 35m
ORD17:00Chicago O'Hare Intl
£390
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Chicago O'Hare Intl Airport to United Kingdom that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 31 July 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Mon 18/8

10:27-06:55

1 stop14h 28m

London Gatwick

Tue 26/8

14:00-22:22

1 stop14h 22m

£318

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Fri 16/1

19:20-16:25

2 stops15h 05m

London Heathrow

Sun 18/1

10:20-16:55

1 stop12h 35m

£320

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Fri 16/1

19:20-16:25

2 stops15h 05m

London Heathrow

Sun 18/1

10:20-16:55

1 stop12h 35m

£321

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 10/8

15:45-09:05

1 stop11h 20m

London Heathrow

Tue 19/8

08:50-14:00

1 stop11h 10m

£354

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 10/8

15:45-08:00

1 stop10h 15m

London Heathrow

Fri 29/8

13:25-19:00

1 stop11h 35m

£356

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Wed 8/10

22:15-14:40

1 stop10h 25m

London Gatwick

Mon 20/10

15:40-18:15

1 stop32h 35m

£362

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 11/8

22:35-12:15

Nonstop7h 40m

London Heathrow

Fri 22/8

06:20-15:45

1 stop15h 25m

£364

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 26/8

21:15-11:05

Nonstop7h 50m

London Heathrow

Tue 2/9

06:20-15:45

1 stop15h 25m

£365

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Fri 12/9

22:15-14:40

1 stop10h 25m

London Gatwick

Fri 19/9

15:40-21:15

1 stop11h 35m

£366

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Sun 21/9

16:30-20:00

1 stop21h 30m

London Gatwick

Tue 30/9

10:40-19:41

1 stop15h 01m

£379

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to the United Kingdom from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to United Kingdom

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 United Kingdom?

The cheapest month to fly to United Kingdom from Chicago O'Hare Intl Airport is in April. Flight prices, which tend to average around £488, are often lower during this time because this is during the off-season. If you are unable to visit United Kingdom during the month of April, then departing from Chicago O'Hare Intl Airport during the month February is also very affordable. Most momondo users find prices during this month for around £489.

What is the cheapest day to depart on your flight to United Kingdom?

The cheapest day to depart from Chicago O'Hare Intl Airport to United Kingdom is on a Wednesday. Travellers who choose to depart for United Kingdom on a Wednesday will often find tickets for as low as £540. 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 United Kingdom for around £668.

What is the cheapest time of day to depart on your flight to United Kingdom?

The cheapest time of day to fly to United Kingdom is in the afternoon when flights can be purchased for as low as £601. Try not to purchase tickets at midday because they tend to be around £701. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

How far in advance should I book a flight to United Kingdom?

You are more likely to see cheaper flights to United Kingdom from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around £597 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from Chicago O'Hare Intl Airport for as low as £531 on momondo.

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

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

You could potentially save up to 52% on your flight if you consider stops on a Chicago O'Hare Intl Airport to United Kingdom flight.

Cheap Chicago O'Hare Intl Airport to United Kingdom flight deals and tips

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

Best price found

£134

Fastest flight time

7h 40m

Direct flights

Every day

Airports in United Kingdom

8 airports
The best one-way flight to United Kingdom from Chicago O'Hare Intl Airport in the past 72 hours is £134. The best return flight deal from Chicago O'Hare Intl Airport to United Kingdom found on momondo in the last 72 hours is £318.
The fastest flight from Chicago O'Hare Intl Airport to United Kingdom takes 7h 40m
Direct flights go from Chicago O'Hare Intl Airport to United Kingdom every day.
There are 8 airports near United Kingdom: London City (LCY), London Heathrow (LHR), Southampton Eastleigh (SOU), Edinburgh Turnhouse (EDI), Manchester (MAN), London Stansted (STN), London Gatwick (LGW), Glasgow Intl (GLA)
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  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to United Kingdom?

    Prices for flights from Chicago O'Hare Intl Airport to United Kingdom are updated daily.

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

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

    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 United Kingdom.

  • What documentation or ID do you need to fly to United Kingdom?

    The travel and health documents you'll need for your trip to United Kingdom 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 United Kingdom. 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 United Kingdom?

Best airlines flying from Chicago O'Hare Intl Airport to United Kingdom

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to United Kingdom with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom £260Free CancellationRating
7.0
519 reviews
Search Icelandair flights
British AirwaysPriceFrom £331Free CancellationRating
6.6
7,217 reviews
Search British Airways flights
Aer LingusPriceFrom £415Free CancellationRating
7.1
1,191 reviews
Search Aer Lingus flights
Virgin AtlanticPriceFrom £416Free CancellationRating
7.4
655 reviews
Search Virgin Atlantic flights
FinnairPriceFrom £417Free CancellationRating
7.6
1,316 reviews
Search Finnair flights
IberiaPriceFrom £450Free CancellationRating
7.0
2,859 reviews
Search Iberia flights
United AirlinesPriceFrom £466Free CancellationRating
7.4
8,896 reviews
Search United Airlines flights
LufthansaPriceFrom £489Free CancellationRating
6.8
7,269 reviews
Search Lufthansa flights
American AirlinesPriceFrom £518Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Chicago to United Kingdom . Millions of users trust and use momondo every year so you are in good hands.

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

Yes. All flights to United Kingdom 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 United Kingdom?

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 United Kingdom.

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

Yes. momondo can track prices for Chicago to United Kingdom 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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