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Cheap flights from Chicago O'Hare Intl Airport to London from $150

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 London departing on 4/8. 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 London

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Chicago O'Hare Intl Airport to London.
Scandinavian Airlines Logo
7:15 pm - 5:40 pmORD-LHR
16h 25m1 stop
Scandinavian Airlines Logo
7:30 pm - 4:10 pmLHR-ORD
26h 40m1 stop
$453Scandinavian Airlines
Find Deal
Mon, Sep 22 - Wed, Oct 1
Scandinavian Airlines Logo
7:15 pm - 6:50 pmORD-LHR
17h 35m2 stops
Scandinavian Airlines Logo
5:00 pm - 4:10 pmLHR-ORD
29h 10m1 stop
$460Scandinavian Airlines
Find Deal
Mon, Sep 22 - Wed, Oct 1
Iberia Logo
4:42 pm - 10:20 amORD-LHR
11h 38m1 stop
Iberia Logo
11:05 am - 1:50 pmLHR-ORD
8h 45mnonstop
$525Iberia
Find Deal
Tue, Aug 5 - Wed, Aug 20
Iberia Logo
2:55 pm - 8:05 amORD-LHR
11h 10m1 stop
Iberia Logo
12:15 pm - 2:40 pmLHR-ORD
8h 25mnonstop
$527Iberia
Find Deal
Tue, May 6 - Wed, May 14
British Airways Logo
8:30 pm - 10:30 amORD-LHR
8h 00mnonstop
British Airways Logo
1:10 pm - 3:55 pmLHR-ORD
8h 45mnonstop
$606British Airways
Find Deal
Tue, May 6 - Wed, May 14
United Airlines Logo
2:35 pm - 12:20 pmORD-LHR
15h 45m1 stop
United Airlines Logo
12:10 pm - 12:10 pmLHR-ORD
30h 00m1 stop
$608United Airlines
Find Deal
Wed, Apr 16 - Mon, Apr 21
United Airlines Logo
4:00 pm - 6:35 amORD-LHR
32h 35m1 stop
United Airlines Logo
12:10 pm - 3:55 pmLHR-ORD
33h 45m1 stop
$610United Airlines
Find Deal
Sat, May 3 - Tue, May 13
British Airways Logo
6:00 pm - 8:35 amORD-LGW
32h 35m1 stop
British Airways Logo
3:05 pm - 5:34 pmLGW-ORD
32h 29m1 stop
$611British Airways
Find Deal
Mon, Apr 14 - Thu, May 8
American Airlines Logo
9:15 pm - 10:55 amORD-LHR
7h 40mnonstop
American Airlines Logo
8:50 am - 3:45 pmLHR-ORD
12h 55m1 stop
$626American Airlines
Find Deal
Wed, Aug 27 - Fri, Sep 19
American Airlines Logo
6:30 pm - 10:50 amORD-LHR
10h 20m1 stop
American Airlines Logo
12:15 pm - 2:45 pmLHR-ORD
8h 30mnonstop
$629American Airlines
Find Deal
Sun, Apr 20 - Tue, Apr 29

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

Our best Scandinavian Airlines deals on Chicago O'Hare Intl Airport to London flight tickets
Scandinavian Airlines
Sep 22
ORD7:15 pmChicago O'Hare Intl
16h 25m
1 stop
LHR5:40 pmLondon Heathrow
Oct 1
LHR7:30 pmLondon Heathrow
26h 40m
1 stop
ORD4:10 pmChicago O'Hare Intl
Scandinavian Airlines
Sep 22
ORD7:15 pmChicago O'Hare Intl
17h 35m
2 stops
LHR6:50 pmLondon Heathrow
Oct 1
LHR5:00 pmLondon Heathrow
29h 10m
1 stop
ORD4:10 pmChicago O'Hare Intl
Scandinavian Airlines
Sep 22
ORD7:15 pmChicago O'Hare Intl
15h 10m
2 stops
LHR4:25 pmLondon Heathrow
Oct 1
LHR9:05 pmLondon Heathrow
25h 05m
2 stops
ORD4:10 pmChicago O'Hare Intl

Aer Lingus flights from Chicago O'Hare Intl Airport to London

Our best Aer Lingus deals on Chicago O'Hare Intl Airport to London flight tickets
Aer Lingus
Aug 5
ORD9:15 pmChicago O'Hare Intl
10h 10m
1 stop
LHR1:25 pmLondon Heathrow
Aug 20
LHR8:50 amLondon Heathrow
11h 10m
1 stop
ORD2:00 pmChicago O'Hare Intl
Aer Lingus
May 7
ORD9:15 pmChicago O'Hare Intl
10h 40m
1 stop
LHR1:55 pmLondon Heathrow
May 14
LHR8:50 amLondon Heathrow
11h 10m
1 stop
ORD2:00 pmChicago O'Hare Intl
Aer Lingus
May 6
ORD9:15 pmChicago O'Hare Intl
10h 10m
1 stop
LHR1:25 pmLondon Heathrow
May 14
LHR8:50 amLondon Heathrow
11h 10m
1 stop
ORD2:00 pmChicago O'Hare Intl

See travel insights to London from

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

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 London?

The cheapest month to fly to London from Chicago O'Hare Intl Airport is in February. Flight prices, which tend to average around $655, are often lower during this time because this is during the off-season. The month of April is another great option to travel to London, with average flight prices from Chicago O'Hare Intl Airport averaging around $657.

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

The cheapest day to depart from Chicago O'Hare Intl Airport to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $770. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $885. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

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

Flying to London from Chicago O'Hare Intl Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as $728 when looking at flights departing in the morning. Flights to London are more costly in the evening, with an average ticket price of $836. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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

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

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

You are more likely to see cheaper flights to London from Chicago O'Hare Intl Airport when booking 3 weeks ahead of your departure date. In general, you can expect to find flights to London for around $790 when searching 3 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Chicago O'Hare Intl Airport for as low as $728 on momondo.

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

There are 4 cabin classes available to choose from on Chicago O'Hare Intl to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

As of April 2025, prices for Chicago O'Hare Intl Airport to London flights are approximately 8% cheaper when compared to flights at the same time last year.

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

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

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

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

Best Price Found

$150

Fastest flight time

7h 35m

Direct flights

Every day

Airports in London

5 airports
The best one-way flight to London from Chicago O'Hare Intl Airport in the past 72 hours is $150. The best round-trip flight deal from Chicago O'Hare Intl Airport to London found on momondo in the last 72 hours is $453.
The fastest flight from Chicago O'Hare Intl Airport to London takes 7h 35m
Direct flights go from Chicago O'Hare Intl Airport to London every day.
There are 5 airports near London: London City (LCY), London Heathrow (LHR), London Luton (LTN), London Stansted (STN), London Gatwick (LGW)

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

    The straight-line distance from Chicago O'Hare Intl to London is 3950.9 mi. 7h 35m is a normal flight duration for this route.

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

    Prices for flights from Chicago O'Hare Intl Airport to London refresh daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago O'Hare Intl Airport to London.

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

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

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


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

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to London with momondo
Airline
Rating
Free Cancellation
Price
SWISSPriceFrom $257Free CancellationRating
7.5
1,572 reviews
Search SWISS flights
Scandinavian AirlinesPriceFrom $381Free CancellationRating
7.3
1,328 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $468Free CancellationRating
7.0
476 reviews
Search Icelandair flights
LufthansaPriceFrom $502Free CancellationRating
6.7
6,963 reviews
Search Lufthansa flights
TAP AIR PORTUGALPriceFrom $506Free CancellationRating
7.1
1,831 reviews
Search TAP AIR PORTUGAL flights
JetBluePriceFrom $516Free CancellationRating
7.3
2,924 reviews
Search JetBlue flights
Air CanadaPriceFrom $554Free CancellationRating
7.0
9,022 reviews
Search Air Canada flights
FinnairPriceFrom $564Free CancellationRating
7.6
1,267 reviews
Search Finnair flights
DeltaPriceFrom $578Free CancellationRating
8.0
7,898 reviews
Search Delta flights
IberiaPriceFrom $580Free CancellationRating
7.0
2,655 reviews
Search Iberia flights
  • Alaska Airlines Flights From Chicago O'Hare Intl Airport to London

    The lowest priced Alaska Airlines flight from Chicago O'Hare Intl Airport to London from the last 72 hours was $809. Generally, Alaska Airlines has 26 flights on this route every week with an average price of $1,026. Alaska Airlines is rated 8.0/10 by our users.

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

    The best Finnair deal for Chicago O'Hare Intl Airport to London flight tickets found on momondo in the last 72 hours was $564, round-trip. It should be noted that an average Finnair flight deal for this route in this time was higher, at $723 round-trip. Finnair operates 22 flights out of Chicago O'Hare Intl Airport into London in an average week, so prices vary by time and availability. 1,267 Finnair reviews by users on momondo have scored the airline at 7.6/10.


Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Croydon
Luton
Guildford
Hayes
Slough
Dartford
Stansted
Ilford
Dover
Canterbury
Colchester
Milton Keynes
Horley
Wembley
Chelmsford
Eastbourne
Southend-on-Sea
Hook

Why use momondo?

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

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

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

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

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

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 London.

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

Of course. momondo tracks the price of Chicago to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London