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Cheap flights from the United Kingdom to Chicago from £252

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United Kingdom to Chicago departing on 15/1. 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 the United Kingdom to Chicago

Recent return flight deals from the United Kingdom to Chicago

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
06:40 - 16:45LHR-ORD
16h 05m2 stops
Scandinavian Airlines Logo
19:20 - 18:50ORD-LHR
17h 30m2 stops
£408Scandinavian Airlines
Find Deal
Sun, 23 Nov - Sun, 30 Nov
TAP AIR PORTUGAL Logo
06:00 - 15:00LHR-ORD
15h 00m1 stop
TAP AIR PORTUGAL Logo
20:25 - 21:35ORD-LHR
19h 10m1 stop
£408TAP AIR PORTUGAL
Find Deal
Wed, 26 Nov - Sun, 30 Nov
Scandinavian Airlines Logo
07:05 - 16:45LHR-ORD
15h 40m2 stops
Scandinavian Airlines Logo
19:20 - 16:25ORD-LHR
15h 05m2 stops
£409Scandinavian Airlines
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Fri, 21 Nov - Sun, 23 Nov
Icelandair Logo
11:55 - 17:20LGW-ORD
11h 25m1 stop
Icelandair Logo
18:30 - 10:55ORD-LGW
10h 25m1 stop
£420Icelandair
Find Deal
Tue, 18 Nov - Tue, 25 Nov
Icelandair Logo
11:55 - 17:20LGW-ORD
11h 25m1 stop
Icelandair Logo
18:30 - 10:55ORD-LGW
10h 25m1 stop
£421Icelandair
Find Deal
Wed, 26 Nov - Tue, 2 Dec
Aer Lingus Logo
12:00 - 17:55EDI-ORD
11h 55m1 stop
Aer Lingus Logo
21:00 - 19:50ORD-EDI
16h 50m1 stop
£529Aer Lingus
Find Deal
Sat, 22 Nov - Tue, 3 Feb
Aer Lingus Logo
08:20 - 17:55EDI-ORD
15h 35m1 stop
Aer Lingus Logo
21:00 - 14:45ORD-EDI
11h 45m1 stop
£536Aer Lingus
Find Deal
Tue, 9 Dec - Thu, 15 Jan
Lufthansa Logo
09:50 - 20:05LCY-ORD
16h 15m1 stop
Lufthansa Logo
17:20 - 09:15ORD-LCY
10h 55m1 stop
£547Lufthansa
Find Deal
Wed, 4 Mar - Tue, 10 Mar
Lufthansa Logo
09:50 - 20:05LCY-ORD
16h 15m1 stop
Lufthansa Logo
19:30 - 17:35ORD-LCY
17h 05m1 stop
£548Lufthansa
Find Deal
Wed, 4 Mar - Tue, 10 Mar
British Airways Logo
10:00 - 19:23EDI-ORD
15h 23m2 stops
British Airways Logo
20:45 - 16:35ORD-EDI
13h 50m1 stop
£608British Airways
Find Deal
Tue, 9 Dec - Thu, 15 Jan

Icelandair flights from United Kingdom to Chicago

Our best Icelandair deals on United Kingdom to Chicago flight tickets
Icelandair
18 Nov
LGW11:55London Gatwick
11h 25m
1 stop
ORD17:20Chicago O'Hare Intl
25 Nov
ORD18:30Chicago O'Hare Intl
10h 25m
1 stop
LGW10:55London Gatwick
£420
Find similar
Icelandair
26 Nov
LGW11:55London Gatwick
11h 25m
1 stop
ORD17:20Chicago O'Hare Intl
2 Dec
ORD18:30Chicago O'Hare Intl
10h 25m
1 stop
LGW10:55London Gatwick
£421
Find similar
Icelandair
25 Nov
LHR12:15London Heathrow
11h 05m
1 stop
ORD17:20Chicago O'Hare Intl
2 Dec
ORD18:30Chicago O'Hare Intl
19h 00m
1 stop
LHR19:30London Heathrow
£423
Find similar

TAP AIR PORTUGAL flights from United Kingdom to Chicago

Our best TAP AIR PORTUGAL deals on United Kingdom to Chicago flight tickets
TAP AIR PORTUGAL
26 Nov
LHR06:00London Heathrow
15h 00m
1 stop
ORD15:00Chicago O'Hare Intl
30 Nov
ORD20:25Chicago O'Hare Intl
19h 10m
1 stop
LHR21:35London Heathrow
£408
Find similar
TAP AIR PORTUGAL
15 Apr
LHR06:00London Heathrow
16h 00m
1 stop
ORD16:00Chicago O'Hare Intl
1 May
ORD18:00Chicago O'Hare Intl
12h 45m
1 stop
LHR12:45London Heathrow
£410
Find similar
TAP AIR PORTUGAL
17 Jan
LGW16:35London Gatwick
28h 10m
1 stop
ORD14:45Chicago O'Hare Intl
23 Jan
ORD20:15Chicago O'Hare Intl
13h 30m
1 stop
LGW15:45London Gatwick
£411
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from United Kingdom to Chicago 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 5 November 2025.
Use the filters below to find and compare flights from the United Kingdom to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 23/11

06:40-16:45

2 stops16h 05m

Chicago O'Hare Intl

Sun 30/11

19:20-18:50

2 stops17h 30m

£408

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 26/11

06:00-15:00

1 stop15h 00m

Chicago O'Hare Intl

Sun 30/11

20:25-21:35

1 stop19h 10m

£408

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 21/11

07:05-16:45

2 stops15h 40m

Chicago O'Hare Intl

Sun 23/11

19:20-16:25

2 stops15h 05m

£409

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 18/11

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Tue 25/11

18:30-10:55

1 stop10h 25m

£420

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 26/11

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Tue 2/12

18:30-10:55

1 stop10h 25m

£421

EdinburghChicago

EDI - ORD

EDIORD

Edinburgh Turnhouse

Sat 22/11

12:00-17:55

1 stop11h 55m

Chicago O'Hare Intl

Tue 3/2

21:00-19:50

1 stop16h 50m

£529

EdinburghChicago

EDI - ORD

EDIORD

Edinburgh Turnhouse

Tue 9/12

08:20-17:55

1 stop15h 35m

Chicago O'Hare Intl

Thu 15/1

21:00-14:45

1 stop11h 45m

£536

LondonChicago

LCY - ORD

LCYORD

London City

Wed 4/3

09:50-20:05

1 stop16h 15m

Chicago O'Hare Intl

Tue 10/3

17:20-09:15

1 stop10h 55m

£547

LondonChicago

LCY - ORD

LCYORD

London City

Wed 4/3

09:50-20:05

1 stop16h 15m

Chicago O'Hare Intl

Tue 10/3

19:30-17:35

1 stop17h 05m

£548

EdinburghChicago

EDI - ORD

EDIORD

Edinburgh Turnhouse

Tue 9/12

10:00-19:23

2 stops15h 23m

Chicago O'Hare Intl

Thu 15/1

20:45-16:35

1 stop13h 50m

£608

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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See travel insights to Chicago from

How to get the cheapest flight ticket from United Kingdom to Chicago

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 Chicago?

The cheapest month to fly to Chicago from United Kingdom is in February. Flight prices, which tend to average around £443, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Chicago from United Kingdom during September instead. Flights to Chicago in September, while not as cheap as those in February, still average around £447.

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

The cheapest day to depart on your flight to Chicago is on a Wednesday when prices can be found for as low as £629. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Chicago is Saturday, with ticket prices averaging around £688.

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

Flying to Chicago from United Kingdom in the evening is the least expensive time of day to depart. momondo users have found prices as low as £514 when looking at flights departing in the evening. Flights in the afternoon are often more expensive, with an average ticket price of £690.

What is the cheapest United Kingdom to Chicago flight route?

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

How far in advance should I book a flight to Chicago?

You are more likely to see cheaper flights to Chicago from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around £560 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from United Kingdom for as low as £530 on momondo.

What cabin class options are available on United Kingdom to Chicago flights?

There are 4 cabin classes available to choose from on United Kingdom to Chicago 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 United Kingdom to Chicago flights?

You could potentially save up to 11% on your flight if you consider stops on a United Kingdom to Chicago flight.

Cheap United Kingdom to Chicago flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United Kingdom to Chicago

Best price found

£460

Fastest flight time

8h 25m

Direct flights

Every day

Airports in Chicago

1 airport
The best one-way flight to Chicago from United Kingdom in the past 72 hours is £460. The best return flight deal from United Kingdom to Chicago found on momondo in the last 72 hours is £583.
The fastest flight from United Kingdom to Chicago takes 8h 25m
Direct flights go from United Kingdom to Chicago every day.
There is 1 airport near Chicago: Chicago O'Hare Intl (ORD)
Search flight deals

  • When did momondo last update prices for flights from United Kingdom to Chicago?

    Prices for flights from United Kingdom to Chicago are updated daily.

  • How many operators does momondo search for flights from United Kingdom to Chicago?

  • How old do you have to be to fly from United Kingdom to Chicago?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United Kingdom to Chicago.

  • What documentation or ID do you need to fly to Chicago?

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

Best airlines flying from United Kingdom to Chicago

Compare and see reviews for airlines that fly from United Kingdom to Chicago with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom £322Free CancellationRating
7.1
568 reviews
Search Icelandair flights
Virgin AtlanticPriceFrom £354Free CancellationRating
7.5
671 reviews
Search Virgin Atlantic flights
Scandinavian AirlinesPriceFrom £369Free CancellationRating
7.4
1,560 reviews
Search Scandinavian Airlines flights
TAP AIR PORTUGALPriceFrom £378Free CancellationRating
7.1
2,046 reviews
Search TAP AIR PORTUGAL flights
Aer LingusPriceFrom £380Free CancellationRating
7.2
1,365 reviews
Search Aer Lingus flights
British AirwaysPriceFrom £389Free CancellationRating
6.7
7,496 reviews
Search British Airways flights
Brussels AirlinesPriceFrom £396Free CancellationRating
7.2
369 reviews
Search Brussels Airlines flights
LufthansaPriceFrom £407Free CancellationRating
6.8
7,552 reviews
Search Lufthansa flights
Austrian AirlinesPriceFrom £415Free CancellationRating
7.6
864 reviews
Search Austrian Airlines flights
United AirlinesPriceFrom £419Free CancellationRating
7.4
9,001 reviews
Search United Airlines flights

Why use momondo?

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

It is quick and easy to find United Kingdom to Chicago 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 Chicago that suits you.

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

momondo does allow users to show only those flights to Chicago from United Kingdom which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from United Kingdom to Chicago?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Chicago from United Kingdom.

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

If you are simply researching potential flights to Chicago, momondo offers a useful price alert feature which will track prices for flights to Chicago from United Kingdom and alert you when they change.

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Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Airports listed have a maximum distance of 78.5 mi from Chicago
Chicago Midway Airport
Chicago O'Hare Intl Airport
Chicago Greater Rockford Airport