Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from London to Chicago from £394

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from London to Chicago departing on 9/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from London to Chicago

Cheap return flights

Logo
14:00 - 07:34LGW-ORD
23h 34m1 stop
Logo
18:58 - 10:00ORD-LGW
33h 02m1 stop
£394
Find Deal
Thu, 9 Oct - Wed, 15 Oct
American Airlines Logo
08:20 - 15:45LHR-ORD
13h 25m1 stop
American Airlines Logo
16:28 - 09:40ORD-LHR
11h 12m1 stop
£394American Airlines
Find Deal
Thu, 2 Oct - Wed, 8 Oct
Icelandair Logo
12:15 - 17:20LHR-ORD
11h 05m1 stop
Icelandair Logo
18:30 - 19:30ORD-LHR
19h 00m1 stop
£398Icelandair
Find Deal
Sun, 14 Dec - Thu, 15 Jan
British Airways Logo
12:35 - 15:25LHR-ORD
8h 50mdirect
British Airways Logo
21:45 - 11:35ORD-LHR
7h 50mdirect
£399British Airways
Find Deal
Fri, 7 Nov - Mon, 10 Nov
British Airways Logo
15:45 - 18:45LHR-ORD
9h 00mdirect
British Airways Logo
20:45 - 10:25ORD-LHR
7h 40mdirect
£400British Airways
Find Deal
Sat, 22 Nov - Fri, 5 Dec
Icelandair Logo
15:40 - 21:15LGW-ORD
11h 35m1 stop
Icelandair Logo
19:25 - 14:40ORD-LGW
13h 15m1 stop
£405Icelandair
Find Deal
Wed, 15 Oct - Sun, 19 Oct
Finnair Logo
09:45 - 16:13LHR-ORD
12h 28m1 stop
Finnair Logo
15:10 - 07:50ORD-LHR
10h 40m1 stop
£405Finnair
Find Deal
Thu, 9 Oct - Wed, 15 Oct
Finnair Logo
17:00 - 07:25LHR-ORD
20h 25m2 stops
Finnair Logo
09:41 - 06:20ORD-LHR
14h 39m1 stop
£415Finnair
Find Deal
Sun, 5 Oct - Sun, 12 Oct
Lufthansa Logo
09:40 - 21:05LCY-ORD
16h 25m1 stop
Lufthansa Logo
22:35 - 16:40ORD-LCY
12h 05m1 stop
£416Lufthansa
Find Deal
Thu, 30 Oct - Thu, 6 Nov
Lufthansa Logo
09:50 - 20:05LCY-ORD
16h 15m1 stop
Lufthansa Logo
22:35 - 16:40ORD-LCY
12h 05m1 stop
£417Lufthansa
Find Deal
Mon, 24 Nov - Sun, 30 Nov

American Airlines flights from London to Chicago O'Hare Intl Airport

Our best American Airlines deals on London to Chicago O'Hare Intl Airport flight tickets
American Airlines
2 Oct
LHR08:20London Heathrow
13h 25m
1 stop
ORD15:45Chicago O'Hare Intl
8 Oct
ORD16:28Chicago O'Hare Intl
11h 12m
1 stop
LHR09:40London Heathrow
£394
Find similar
American Airlines
3 Oct
LHR07:40London Heathrow
14h 05m
1 stop
ORD15:45Chicago O'Hare Intl
7 Oct
ORD14:41Chicago O'Hare Intl
11h 24m
1 stop
LHR08:05London Heathrow
£394
Find similar
American Airlines
1 Oct
LGW12:20London Gatwick
16h 52m
2 stops
ORD23:12Chicago O'Hare Intl
6 Oct
ORD13:43Chicago O'Hare Intl
12h 27m
1 stop
LGW08:10London Gatwick
£397
Find similar

Lufthansa flights from London to Chicago O'Hare Intl Airport

Our best Lufthansa deals on London to Chicago O'Hare Intl Airport flight tickets
Lufthansa
23 Sept
LHR07:30London Heathrow
16h 51m
2 stops
ORD18:21Chicago O'Hare Intl
30 Sept
ORD22:30Chicago O'Hare Intl
12h 10m
1 stop
LHR16:40London Heathrow
£402
Find similar
Lufthansa
30 Oct
LCY09:40London City
16h 25m
1 stop
ORD21:05Chicago O'Hare Intl
6 Nov
ORD22:35Chicago O'Hare Intl
12h 05m
1 stop
LCY16:40London City
£416
Find similar
Lufthansa
24 Nov
LCY09:50London City
16h 15m
1 stop
ORD20:05Chicago O'Hare Intl
30 Nov
ORD22:35Chicago O'Hare Intl
12h 05m
1 stop
LCY16:40London City
£417
Find similar

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 16 September 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

LGW - ORD

LGWORD

London Gatwick

Thu 9/10

14:00-07:34

1 stop23h 34m

Chicago O'Hare Intl

Wed 15/10

18:58-10:00

1 stop33h 02m

£394

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 2/10

08:20-15:45

1 stop13h 25m

Chicago O'Hare Intl

Wed 8/10

16:28-09:40

1 stop11h 12m

£394

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 14/12

12:15-17:20

1 stop11h 05m

Chicago O'Hare Intl

Thu 15/1

18:30-19:30

1 stop19h 00m

£398

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 7/11

12:35-15:25

Nonstop8h 50m

Chicago O'Hare Intl

Mon 10/11

21:45-11:35

Nonstop7h 50m

£399

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 22/11

15:45-18:45

Nonstop9h 00m

Chicago O'Hare Intl

Fri 5/12

20:45-10:25

Nonstop7h 40m

£400

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 15/10

15:40-21:15

1 stop11h 35m

Chicago O'Hare Intl

Sun 19/10

19:25-14:40

1 stop13h 15m

£405

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 9/10

09:45-16:13

1 stop12h 28m

Chicago O'Hare Intl

Wed 15/10

15:10-07:50

1 stop10h 40m

£405

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 5/10

17:00-07:25

2 stops20h 25m

Chicago O'Hare Intl

Sun 12/10

09:41-06:20

1 stop14h 39m

£415

LondonChicago

LCY - ORD

LCYORD

London City

Thu 30/10

09:40-21:05

1 stop16h 25m

Chicago O'Hare Intl

Thu 6/11

22:35-16:40

1 stop12h 05m

£416

LondonChicago

LCY - ORD

LCYORD

London City

Mon 24/11

09:50-20:05

1 stop16h 15m

Chicago O'Hare Intl

Sun 30/11

22:35-16:40

1 stop12h 05m

£417

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Chicago from

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 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 £430, 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 £451.

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 £599. 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 £655.

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 £559. In contrast, the most expensive time of day to depart to Chicago O'Hare Intl Airport is in the afternoon when prices are around £656.

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 £532 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 £510 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 7% 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 September 2025, prices for London to Chicago O'Hare Intl Airport flights are approximately 8% 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

£491

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 £491. The best return flight deal from London to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is £494.
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 8h 40m.

  • 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 £308Free CancellationRating
7.0
544 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom £350Free CancellationRating
7.4
1,484 reviews
Search Scandinavian Airlines flights
TAP AIR PORTUGALPriceFrom £364Free CancellationRating
7.1
1,975 reviews
Search TAP AIR PORTUGAL flights
Aer LingusPriceFrom £364Free CancellationRating
7.2
1,270 reviews
Search Aer Lingus flights
Virgin AtlanticPriceFrom £376Free CancellationRating
7.4
664 reviews
Search Virgin Atlantic flights
Brussels AirlinesPriceFrom £389Free CancellationRating
7.2
359 reviews
Search Brussels Airlines flights
LufthansaPriceFrom £391Free CancellationRating
6.8
7,407 reviews
Search Lufthansa flights
Austrian AirlinesPriceFrom £397Free CancellationRating
7.6
850 reviews
Search Austrian Airlines flights
British AirwaysPriceFrom £400Free CancellationRating
6.6
7,361 reviews
Search British Airways flights
United AirlinesPriceFrom £404Free CancellationRating
7.4
8,929 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 £539. Generally, Austrian Airlines has 21 flights on this route every week with an average price of £769. 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 1,323 reviews) operates around 27 flights from London to Chicago O'Hare Intl Airport in any given week. The average Finnair airfare for this route is around £753, with deals from around £587 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
Glenview
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.

An easier way to manage your Chicago O'Hare Intl Airport trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 16/10
Thu 23/10
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Chicago