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Cheap flights from London to Chicago from £400

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Chicago departing on 23/12. 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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Scandinavian Airlines Logo
06:40 - 16:45LHR-ORD
16h 05m1 stop
Scandinavian Airlines Logo
19:20 - 16:00ORD-LHR
14h 40m1 stop
£404Scandinavian Airlines
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Thu, 13 Nov - Sun, 23 Nov
Multiple Airlines Logo
06:50 - 17:20LTN-ORD
16h 30m2 stops
Multiple Airlines Logo
18:30 - 23:05ORD-LTN
22h 35m2 stops
£404Multiple Airlines
Find Deal
Wed, 26 Nov - Wed, 3 Dec
TAP AIR PORTUGAL Logo
14:50 - 16:00LGW-ORD
31h 10m1 stop
TAP AIR PORTUGAL Logo
18:00 - 14:00ORD-LGW
14h 00m1 stop
£410TAP AIR PORTUGAL
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Thu, 16 Apr - Wed, 29 Apr
TAP AIR PORTUGAL Logo
14:50 - 16:00LGW-ORD
31h 10m1 stop
TAP AIR PORTUGAL Logo
18:00 - 15:40ORD-LGW
15h 40m1 stop
£411TAP AIR PORTUGAL
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Thu, 16 Apr - Fri, 1 May
Icelandair Logo
11:55 - 17:20LGW-ORD
11h 25m1 stop
Icelandair Logo
18:30 - 10:55ORD-LGW
10h 25m1 stop
£425Icelandair
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Wed, 26 Nov - Wed, 3 Dec
Icelandair Logo
12:15 - 17:20LHR-ORD
11h 05m1 stop
Icelandair Logo
18:30 - 10:50ORD-LHR
10h 20m1 stop
£428Icelandair
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Tue, 25 Nov - Tue, 2 Dec
SWISS Logo
09:15 - 16:20LCY-ORD
13h 05m1 stop
SWISS Logo
18:50 - 12:55ORD-LCY
12h 05m1 stop
£491SWISS
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Tue, 25 Nov - Tue, 2 Dec
SWISS Logo
19:10 - 12:45LCY-ORD
23h 35m1 stop
SWISS Logo
16:10 - 12:55ORD-LCY
14h 45m1 stop
£511SWISS
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Tue, 25 Nov - Mon, 1 Dec
Virgin Atlantic Logo
18:55 - 14:20LCY-ORD
25h 25m1 stop
Virgin Atlantic Logo
10:45 - 08:50ORD-LCY
16h 05m2 stops
£555Virgin Atlantic
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Tue, 25 Nov - Tue, 2 Dec
Virgin Atlantic Logo
09:20 - 14:20LCY-ORD
11h 00m1 stop
Virgin Atlantic Logo
10:35 - 07:15ORD-LCY
14h 40m2 stops
£561Virgin Atlantic
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Mon, 19 Jan - Tue, 3 Feb

SWISS flights from London to Chicago O'Hare Intl Airport

Our best SWISS deals on London to Chicago O'Hare Intl Airport flight tickets
SWISS
25 Nov
LCY09:15London City
13h 05m
1 stop
ORD16:20Chicago O'Hare Intl
2 Dec
ORD18:50Chicago O'Hare Intl
12h 05m
1 stop
LCY12:55London City
£491
Find similar
SWISS
25 Nov
LCY19:10London City
23h 35m
1 stop
ORD12:45Chicago O'Hare Intl
1 Dec
ORD16:10Chicago O'Hare Intl
14h 45m
1 stop
LCY12:55London City
£511
Find similar
SWISS
4 Dec
LCY09:15London City
13h 05m
1 stop
ORD16:20Chicago O'Hare Intl
8 Dec
ORD18:50Chicago O'Hare Intl
12h 05m
1 stop
LCY12:55London City
£513
Find similar

Virgin Atlantic flights from London to Chicago O'Hare Intl Airport

Our best Virgin Atlantic deals on London to Chicago O'Hare Intl Airport flight tickets
Virgin Atlantic
25 Nov
LCY18:55London City
25h 25m
1 stop
ORD14:20Chicago O'Hare Intl
2 Dec
ORD10:45Chicago O'Hare Intl
16h 05m
2 stops
LCY08:50London City
£555
Find similar
Virgin Atlantic
19 Jan
LCY09:20London City
11h 00m
1 stop
ORD14:20Chicago O'Hare Intl
3 Feb
ORD10:35Chicago O'Hare Intl
14h 40m
2 stops
LCY07:15London City
£561
Find similar
Virgin Atlantic
8 Dec
LCY07:45London City
12h 35m
1 stop
ORD14:20Chicago O'Hare Intl
22 Dec
ORD16:25Chicago O'Hare Intl
11h 05m
1 stop
LCY09:30London City
£568
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momondo Fare Finder

 
Customise your flight search to find flights from London to Chicago O'Hare Intl Airport 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 October 2025.
Use the filters below to find and compare flights from London to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 13/11

06:40-16:45

1 stop16h 05m

Chicago O'Hare Intl

Sun 23/11

19:20-16:00

1 stop14h 40m

£404

LondonChicago

LTN - ORD

LTNORD

London Luton

Wed 26/11

06:50-17:20

2 stops16h 30m

Chicago O'Hare Intl

Wed 3/12

18:30-23:05

2 stops22h 35m

£404

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Thu 16/4

14:50-16:00

1 stop31h 10m

Chicago O'Hare Intl

Wed 29/4

18:00-14:00

1 stop14h 00m

£410

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Thu 16/4

14:50-16:00

1 stop31h 10m

Chicago O'Hare Intl

Fri 1/5

18:00-15:40

1 stop15h 40m

£411

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 26/11

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Wed 3/12

18:30-10:55

1 stop10h 25m

£425

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 25/11

12:15-17:20

1 stop11h 05m

Chicago O'Hare Intl

Tue 2/12

18:30-10:50

1 stop10h 20m

£428

LondonChicago

LCY - ORD

LCYORD

London City

Tue 25/11

09:15-16:20

1 stop13h 05m

Chicago O'Hare Intl

Tue 2/12

18:50-12:55

1 stop12h 05m

£491

LondonChicago

LCY - ORD

LCYORD

London City

Tue 25/11

19:10-12:45

1 stop23h 35m

Chicago O'Hare Intl

Mon 1/12

16:10-12:55

1 stop14h 45m

£511

LondonChicago

LCY - ORD

LCYORD

London City

Tue 25/11

18:55-14:20

1 stop25h 25m

Chicago O'Hare Intl

Tue 2/12

10:45-08:50

2 stops16h 05m

£555

LondonChicago

LCY - ORD

LCYORD

London City

Mon 19/1

09:20-14:20

1 stop11h 00m

Chicago O'Hare Intl

Tue 3/2

10:35-07:15

2 stops14h 40m

£561

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from London to Chicago O'Hare Intl 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 London and Chicago O'Hare Intl Airport?

What is the cheapest month to fly to Chicago O'Hare Intl Airport?

The cheapest month to fly to Chicago O'Hare Intl Airport from London 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 O'Hare Intl Airport from London during September instead. Flights to Chicago O'Hare Intl Airport in September, while not as cheap as those in February, still average around £455.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart from London to Chicago O'Hare Intl Airport is on a Wednesday. Travellers who choose to depart for Chicago O'Hare Intl Airport on a Wednesday will often find tickets for as low as £623. 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 Chicago O'Hare Intl Airport on Saturday is £685.

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest time of day to fly to Chicago O'Hare Intl Airport is in the evening when flights can be purchased for as low as £577. In contrast, the most expensive time of day to depart to Chicago O'Hare Intl Airport is in the afternoon when prices are around £684.

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

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

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around £555 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from London for as low as £526 on momondo.

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

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

You could potentially save up to 17% on your flight if you consider stops on a London to Chicago O'Hare Intl Airport flight.

How have London to Chicago O'Hare Intl Airport flight prices changed over time?

As of October 2025, prices for London to Chicago O'Hare Intl Airport flights are approximately 11% more expensive when compared to flights at the same time last year.

When to book flights from London to Chicago O'Hare Intl Airport

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

Cheap London to Chicago O'Hare Intl Airport (LON to ORD) flight deals and tips

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

Best price found

£457

Fastest flight time

8h 25m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from London in the past 72 hours is £457. The best return flight deal from London to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is £563.
The fastest flight from London to Chicago O'Hare Intl Airport takes 8h 25m
Direct flights go from London to Chicago O'Hare Intl Airport every day.
Search flight deals

  • How far is London to Chicago O'Hare Intl by plane?

    There are 3950.9 mi between London and Chicago O'Hare Intl. In terms of flight time, this usually takes a little over 11h 00m.

  • When did momondo last update prices for flights from London to Chicago O'Hare Intl Airport?

    Prices for flights from London to Chicago O'Hare Intl Airport are refreshed on a daily basis.

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

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

    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 London to Chicago O'Hare Intl Airport.

  • What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

    The travel and health documents you'll need for your trip to Chicago O'Hare Intl Airport 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 O'Hare Intl Airport. 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 London to Chicago O'Hare Intl Airport?

  • What is the most popular airline from London to Chicago O'Hare Intl Airport?

Best airlines flying from London to Chicago O'Hare Intl Airport

Compare and see reviews for airlines that fly from London to Chicago O'Hare Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom £320Free CancellationRating
7.1
562 reviews
Search Icelandair flights
Virgin AtlanticPriceFrom £351Free CancellationRating
7.5
671 reviews
Search Virgin Atlantic flights
Scandinavian AirlinesPriceFrom £362Free CancellationRating
7.4
1,548 reviews
Search Scandinavian Airlines flights
TAP AIR PORTUGALPriceFrom £375Free CancellationRating
7.1
2,040 reviews
Search TAP AIR PORTUGAL flights
Aer LingusPriceFrom £377Free CancellationRating
7.2
1,365 reviews
Search Aer Lingus flights
Brussels AirlinesPriceFrom £393Free CancellationRating
7.2
369 reviews
Search Brussels Airlines flights
LufthansaPriceFrom £404Free CancellationRating
6.8
7,543 reviews
Search Lufthansa flights
Austrian AirlinesPriceFrom £412Free CancellationRating
7.6
862 reviews
Search Austrian Airlines flights
British AirwaysPriceFrom £412Free CancellationRating
6.7
7,489 reviews
Search British Airways flights
United AirlinesPriceFrom £416Free CancellationRating
7.4
8,995 reviews
Search United Airlines flights

  • Austrian Airlines Flights From London to Chicago O'Hare Intl Airport

    The lowest priced Austrian Airlines flight from London to Chicago O'Hare Intl Airport from the last 72 hours was £412. Generally, Austrian Airlines has 12 flights on this route every week with an average price of £614. Austrian Airlines is rated 7.6/10 by our users.

  • Finnair Flights From London to Chicago O'Hare Intl Airport

    Finnair (7.6/10 from 1,333 reviews) operates around 16 flights from London to Chicago O'Hare Intl Airport in any given week. The average Finnair airfare for this route is around £578, with deals from around £437 rare but found on momondo. Referenced prices are for round-trip London to Chicago O'Hare Intl Airport flight searches in the last 72 hours.

Travelling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Racine
Evanston
Northbrook
Schaumburg
Lincolnshire
Lake Geneva
Oak Brook
Joliet
Oak Park
Elgin
Rosemont

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to Chicago. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Chicago from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from London to Chicago?

momondo helps you find the best flight between London and Chicago 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 London to Chicago right now. Can momondo alert me if prices change?

Yes. momondo can track prices for London to Chicago 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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