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Cheap flights from Chicago O'Hare Intl Airport to London from $221

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 7/28. 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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Cheap round-trip flights

Scandinavian Airlines Logo
7:15 pm - 4:25 pmORD-LHR
15h 10m2 stops
Scandinavian Airlines Logo
6:40 am - 4:10 pmLHR-ORD
15h 30m2 stops
$443Scandinavian Airlines
Find Deal
Sat, Aug 23 - Mon, Aug 25
Scandinavian Airlines Logo
7:15 pm - 5:40 pmORD-LHR
16h 25m1 stop
Scandinavian Airlines Logo
6:40 am - 4:10 pmLHR-ORD
15h 30m2 stops
$446Scandinavian Airlines
Find Deal
Sat, Aug 23 - Mon, Aug 25
Scandinavian Airlines Logo
7:15 pm - 8:55 amORD-LHR
31h 40m2 stops
Scandinavian Airlines Logo
6:40 am - 4:10 pmLHR-ORD
15h 30m1 stop
$460Scandinavian Airlines
Find Deal
Fri, Sep 5 - Mon, Sep 8
Scandinavian Airlines Logo
7:20 pm - 8:55 amORD-LHR
31h 35m2 stops
Scandinavian Airlines Logo
6:40 am - 4:45 pmLHR-ORD
16h 05m1 stop
$462Scandinavian Airlines
Find Deal
Mon, Nov 3 - Thu, Nov 6
Icelandair Logo
6:30 pm - 7:30 pmORD-LHR
19h 00m1 stop
Icelandair Logo
12:15 pm - 5:20 pmLHR-ORD
11h 05m1 stop
$481Icelandair
Find Deal
Fri, Nov 7 - Thu, Nov 13
Icelandair Logo
7:25 pm - 8:20 pmORD-LHR
18h 55m1 stop
Icelandair Logo
1:05 pm - 6:15 pmLHR-ORD
11h 10m1 stop
$494Icelandair
Find Deal
Thu, Sep 4 - Tue, Sep 9
Icelandair Logo
7:25 pm - 11:55 amORD-LHR
10h 30m1 stop
Icelandair Logo
9:25 pm - 9:15 pmLHR-ORD
29h 50m1 stop
$499Icelandair
Find Deal
Sun, Oct 12 - Thu, Oct 23
Icelandair Logo
6:30 pm - 10:50 amORD-LHR
10h 20m1 stop
Icelandair Logo
12:15 pm - 5:20 pmLHR-ORD
11h 05m1 stop
$500Icelandair
Find Deal
Sun, Nov 9 - Fri, Nov 14
TAP AIR PORTUGAL Logo
8:50 pm - 10:05 pmORD-LHR
19h 15m1 stop
TAP AIR PORTUGAL Logo
7:50 pm - 4:10 pmLHR-ORD
26h 20m1 stop
$513TAP AIR PORTUGAL
Find Deal
Thu, Aug 14 - Thu, Aug 21
TAP AIR PORTUGAL Logo
8:50 pm - 10:05 pmORD-LHR
19h 15m1 stop
TAP AIR PORTUGAL Logo
6:45 pm - 4:10 pmLHR-ORD
27h 25m1 stop
$541TAP AIR PORTUGAL
Find Deal
Thu, Aug 14 - Thu, Aug 21

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

Our best Scandinavian Airlines deals on Chicago O'Hare Intl Airport to London Heathrow Airport flight tickets
Scandinavian Airlines
Aug 23
ORD7:15 pmChicago O'Hare Intl
15h 10m
2 stops
LHR4:25 pmLondon Heathrow
Aug 25
LHR6:40 amLondon Heathrow
15h 30m
2 stops
ORD4:10 pmChicago O'Hare Intl
Scandinavian Airlines
Aug 23
ORD7:15 pmChicago O'Hare Intl
16h 25m
1 stop
LHR5:40 pmLondon Heathrow
Aug 25
LHR6:40 amLondon Heathrow
15h 30m
2 stops
ORD4:10 pmChicago O'Hare Intl
Scandinavian Airlines
Sep 5
ORD7:15 pmChicago O'Hare Intl
31h 40m
2 stops
LHR8:55 amLondon Heathrow
Sep 8
LHR6:40 amLondon Heathrow
15h 30m
1 stop
ORD4:10 pmChicago O'Hare Intl

Icelandair flights from Chicago O'Hare Intl Airport to London Heathrow Airport

Our best Icelandair deals on Chicago O'Hare Intl Airport to London Heathrow Airport flight tickets
Icelandair
Nov 7
ORD6:30 pmChicago O'Hare Intl
19h 00m
1 stop
LHR7:30 pmLondon Heathrow
Nov 13
LHR12:15 pmLondon Heathrow
11h 05m
1 stop
ORD5:20 pmChicago O'Hare Intl
Icelandair
Sep 4
ORD7:25 pmChicago O'Hare Intl
18h 55m
1 stop
LHR8:20 pmLondon Heathrow
Sep 9
LHR1:05 pmLondon Heathrow
11h 10m
1 stop
ORD6:15 pmChicago O'Hare Intl
Icelandair
Oct 12
ORD7:25 pmChicago O'Hare Intl
10h 30m
1 stop
LHR11:55 amLondon Heathrow
Oct 23
LHR9:25 pmLondon Heathrow
29h 50m
1 stop
ORD9:15 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 Heathrow 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 Chicago O'Hare Intl Airport and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Chicago O'Hare Intl Airport, with most prices found around $672. If you’re not able to fly to London Heathrow Airport in February, then April is your next best option. Flight prices from Chicago O'Hare Intl Airport to London Heathrow Airport during April average around $677.

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

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $763. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $888.

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

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from Chicago O'Hare Intl Airport to London Heathrow Airport in the morning for as low as $694. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the afternoon are often more expensive with an average ticket price of $825.

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

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

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

You are more likely to see cheaper flights to London Heathrow Airport from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $802 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Chicago O'Hare Intl Airport for as low as $715 on momondo.

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

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

You could potentially save up to 20% on your flight if you consider stops on a Chicago O'Hare Intl Airport to London Heathrow Airport flight.

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

As of June 2025, prices for Chicago O'Hare Intl Airport to London Heathrow Airport flights are approximately 23% more expensive when compared to flights at the same time last year.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to London Heathrow Airport 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 Heathrow Airport (ORD to LHR) flight deals and tips

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

Best Price Found

$221

Fastest flight time

10h 20m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from Chicago O'Hare Intl Airport in the past 72 hours is $221. The best round-trip flight deal from Chicago O'Hare Intl Airport to London Heathrow Airport found on momondo in the last 72 hours is $443.
The fastest flight from Chicago O'Hare Intl Airport to London Heathrow Airport takes 10h 20m
Direct flights go from Chicago O'Hare Intl Airport to London Heathrow Airport every day.

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

    London Heathrow is 3939.2 mi away from Chicago O'Hare Intl. By plane, this route typically takes 10h 20m.

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

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

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

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

    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 London Heathrow Airport.

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

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

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


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

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
SWISSPriceFrom $257Free CancellationRating
7.5
1,654 reviews
Search SWISS flights
DeltaPriceFrom $345Free CancellationRating
8.0
7,973 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom $381Free CancellationRating
7.3
1,413 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $430Free CancellationRating
6.8
7,200 reviews
Search Lufthansa flights
IcelandairPriceFrom $465Free CancellationRating
7.0
513 reviews
Search Icelandair flights
TAP AIR PORTUGALPriceFrom $507Free CancellationRating
7.1
1,911 reviews
Search TAP AIR PORTUGAL flights
JetBluePriceFrom $516Free CancellationRating
7.3
2,920 reviews
Search JetBlue flights
Aer LingusPriceFrom $543Free CancellationRating
7.1
1,140 reviews
Search Aer Lingus flights
FinnairPriceFrom $569Free CancellationRating
7.6
1,299 reviews
Search Finnair flights
IberiaPriceFrom $581Free CancellationRating
7.0
2,810 reviews
Search Iberia flights
  • Alaska Airlines Flights From Chicago O'Hare Intl Airport to London Heathrow Airport

    Alaska Airlines operates around 34 flights from Chicago O'Hare Intl Airport to London Heathrow Airport every week. The average price of these flights found in the last 72 hours has been $973, but momondo users have found Alaska Airlines deals from Chicago O'Hare Intl Airport to London Heathrow Airport from as low as $809 round-trip. Alaska Airlines has been scored 8.0/10 in 10,000 reviews.

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

    Another popular option for Chicago O'Hare Intl Airport to London Heathrow Airport flights is Finnair (7.6/10, 1,299 ratings). Finnair flies from Chicago O'Hare Intl Airport to London Heathrow Airport around 27 times per week, with deals starting from $569 round-trip and rising to an average price of around $753.


Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Croydon
Luton
Slough
Guildford
Dartford
Dover
Stansted
Hayes
Milton Keynes
Salisbury
Swindon
Ilford
Colchester
Stratford-upon-Avon
Canterbury
Chelmsford
Watford
Richmond

Why use momondo?

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

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

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

All flight searches from Chicago to London on momondo can be filtered to show those which offer flexible booking policies.

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

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

Price alerts on flights to London from Chicago are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


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Sat 7/5
Sat 7/12

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