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Cheap flights from Chicago O'Hare Intl Airport to the United Kingdom from £148

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 28/1. 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

Enter your travel dates to find the best prices.
Icelandair Logo
18:30 - 09:55ORD-GLA
9h 25m1 stop
Icelandair Logo
12:35 - 17:20GLA-ORD
10h 45m1 stop
£358Icelandair
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Thu, 22 Jan - Mon, 2 Feb
Icelandair Logo
18:30 - 09:55ORD-GLA
9h 25m1 stop
Icelandair Logo
12:35 - 17:20GLA-ORD
10h 45m1 stop
£369Icelandair
Find Deal
Tue, 3 Feb - Sat, 7 Feb
Aer Lingus Logo
15:50 - 10:10ORD-LHR
12h 20m1 stop
Aer Lingus Logo
08:50 - 14:00LHR-ORD
11h 10m1 stop
£422Aer Lingus
Find Deal
Mon, 8 Dec - Wed, 10 Dec
Iberia Logo
11:47 - 06:20ORD-LHR
12h 33m1 stop
Iberia Logo
14:10 - 17:00LHR-ORD
8h 50mdirect
£435Iberia
Find Deal
Wed, 3 Dec - Tue, 9 Dec
Iberia Logo
18:25 - 08:15ORD-LHR
7h 50mdirect
Iberia Logo
19:40 - 14:55LHR-ORD
25h 15m1 stop
£436Iberia
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Mon, 1 Dec - Tue, 9 Dec
Aer Lingus Logo
21:00 - 19:50ORD-EDI
16h 50m1 stop
Aer Lingus Logo
09:00 - 19:15EDI-ORD
16h 15m1 stop
£450Aer Lingus
Find Deal
Tue, 20 Jan - Fri, 6 Feb
British Airways Logo
22:45 - 18:15ORD-GLA
14h 30m1 stop
British Airways Logo
11:40 - 19:45GLA-ORD
13h 05m1 stop
£467British Airways
Find Deal
Tue, 10 Mar - Wed, 18 Mar
British Airways Logo
18:10 - 10:45ORD-GLA
11h 35m1 stop
British Airways Logo
05:55 - 19:45GLA-ORD
18h 50m1 stop
£474British Airways
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Sun, 8 Mar - Thu, 19 Mar
United Airlines Logo
15:20 - 12:35ORD-BHX
15h 15m1 stop
United Airlines Logo
06:05 - 15:20BHX-ORD
15h 15m1 stop
£574United Airlines
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Tue, 18 Nov - Fri, 28 Nov
United Airlines Logo
13:47 - 12:45ORD-BHX
16h 58m2 stops
United Airlines Logo
06:05 - 15:20BHX-ORD
15h 15m1 stop
£578United Airlines
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Wed, 19 Nov - Fri, 28 Nov

Aer Lingus flights from Chicago O'Hare Intl Airport to United Kingdom

Our best Aer Lingus deals on Chicago O'Hare Intl Airport to United Kingdom flight tickets
Aer Lingus
9 Nov
ORD19:40Chicago O'Hare Intl
9h 45m
1 stop
LHR11:25London Heathrow
18 Nov
LHR08:50London Heathrow
11h 10m
1 stop
ORD14:00Chicago O'Hare Intl
£416
Find similar
Aer Lingus
9 Nov
ORD19:40Chicago O'Hare Intl
9h 45m
1 stop
LHR11:25London Heathrow
18 Nov
LHR08:50London Heathrow
11h 10m
1 stop
ORD14:00Chicago O'Hare Intl
£417
Find similar
Aer Lingus
5 Nov
ORD17:55Chicago O'Hare Intl
11h 30m
1 stop
LHR11:25London Heathrow
19 Nov
LHR08:50London Heathrow
11h 10m
1 stop
ORD14:00Chicago O'Hare Intl
£420
Find similar

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

Our best Iberia deals on Chicago O'Hare Intl Airport to United Kingdom flight tickets
Iberia
3 Dec
ORD11:47Chicago O'Hare Intl
12h 33m
1 stop
LHR06:20London Heathrow
9 Dec
LHR14:10London Heathrow
8h 50m
ORD17:00Chicago O'Hare Intl
£435
Find similar
Iberia
1 Dec
ORD18:25Chicago O'Hare Intl
7h 50m
LHR08:15London Heathrow
9 Dec
LHR19:40London Heathrow
25h 15m
1 stop
ORD14:55Chicago O'Hare Intl
£436
Find similar
Iberia
12 Nov
ORD18:30Chicago O'Hare Intl
7h 45m
LHR08:15London Heathrow
26 Nov
LHR14:10London Heathrow
8h 50m
ORD17:00Chicago O'Hare Intl
£439
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 3 November 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

ChicagoGlasgow

ORD - GLA

ORDGLA

Chicago O'Hare Intl

Thu 22/1

18:30-09:55

1 stop9h 25m

Glasgow Intl

Mon 2/2

12:35-17:20

1 stop10h 45m

£358

ChicagoGlasgow

ORD - GLA

ORDGLA

Chicago O'Hare Intl

Tue 3/2

18:30-09:55

1 stop9h 25m

Glasgow Intl

Sat 7/2

12:35-17:20

1 stop10h 45m

£369

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 8/12

15:50-10:10

1 stop12h 20m

London Heathrow

Wed 10/12

08:50-14:00

1 stop11h 10m

£422

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 3/12

11:47-06:20

1 stop12h 33m

London Heathrow

Tue 9/12

14:10-17:00

Nonstop8h 50m

£435

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 1/12

18:25-08:15

Nonstop7h 50m

London Heathrow

Tue 9/12

19:40-14:55

1 stop25h 15m

£436

ChicagoEdinburgh

ORD - EDI

ORDEDI

Chicago O'Hare Intl

Tue 20/1

21:00-19:50

1 stop16h 50m

Edinburgh Turnhouse

Fri 6/2

09:00-19:15

1 stop16h 15m

£450

ChicagoGlasgow

ORD - GLA

ORDGLA

Chicago O'Hare Intl

Tue 10/3

22:45-18:15

1 stop14h 30m

Glasgow Intl

Wed 18/3

11:40-19:45

1 stop13h 05m

£467

ChicagoGlasgow

ORD - GLA

ORDGLA

Chicago O'Hare Intl

Sun 8/3

18:10-10:45

1 stop11h 35m

Glasgow Intl

Thu 19/3

05:55-19:45

1 stop18h 50m

£474

ChicagoBirmingham

ORD - BHX

ORDBHX

Chicago O'Hare Intl

Tue 18/11

15:20-12:35

1 stop15h 15m

Birmingham

Fri 28/11

06:05-15:20

1 stop15h 15m

£574

ChicagoBirmingham

ORD - BHX

ORDBHX

Chicago O'Hare Intl

Wed 19/11

13:47-12:45

2 stops16h 58m

Birmingham

Fri 28/11

06:05-15:20

1 stop15h 15m

£578

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 £493, 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 £495.

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 Sunday. Travellers who choose to depart for United Kingdom on a Sunday will often find tickets for as low as £520. 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 £711.

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 £578. Try not to purchase tickets at midday because they tend to be around £710. 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 £604 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 £529 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 37% 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

£303

Fastest flight time

7h 40m

Direct flights

Every day

Airports in United Kingdom

2 airports
The best one-way flight to United Kingdom from Chicago O'Hare Intl Airport in the past 72 hours is £303. The best return flight deal from Chicago O'Hare Intl Airport to United Kingdom found on momondo in the last 72 hours is £497.
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 2 airports near United Kingdom: London Heathrow (LHR), Edinburgh Turnhouse (EDI)
Search flight deals

  • 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 £346Free CancellationRating
7.1
568 reviews
Search Icelandair flights
LufthansaPriceFrom £366Free CancellationRating
6.8
7,544 reviews
Search Lufthansa flights
British AirwaysPriceFrom £392Free CancellationRating
6.7
7,494 reviews
Search British Airways flights
American AirlinesPriceFrom £394Free CancellationRating
7.2
11,033 reviews
Search American Airlines flights
FinnairPriceFrom £423Free CancellationRating
7.6
1,335 reviews
Search Finnair flights
Aer LingusPriceFrom £430Free CancellationRating
7.2
1,365 reviews
Search Aer Lingus flights
IberiaPriceFrom £456Free CancellationRating
7.0
3,006 reviews
Search Iberia flights
United AirlinesPriceFrom £472Free CancellationRating
7.4
8,996 reviews
Search United Airlines flights
Virgin AtlanticPriceFrom £496Free CancellationRating
7.5
671 reviews
Search Virgin Atlantic 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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