Cheap flights from Chicago to London from $165

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 to London departing on 10/5. 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
7:20 pm - 6:30 pmORD-LHR
17h 10m1 stop
Scandinavian Airlines Logo
10:20 am - 4:45 pmLHR-ORD
12h 25m1 stop
$427Scandinavian Airlines
Find Deal
Sun, Nov 16 - Sat, Nov 22
Scandinavian Airlines Logo
8:20 pm - 4:00 pmORD-LHR
14h 40m1 stop
Scandinavian Airlines Logo
10:20 am - 4:45 pmLHR-ORD
12h 25m1 stop
$428Scandinavian Airlines
Find Deal
Mon, Oct 27 - Mon, Nov 10
British Airways Logo
10:30 pm - 12:15 pmORD-LHR
7h 45mnonstop
British Airways Logo
1:10 pm - 3:55 pmLHR-ORD
8h 45mnonstop
$465British Airways
Find Deal
Tue, Aug 5 - Wed, Aug 20
Iberia Logo
3:16 pm - 7:50 amORD-LHR
10h 34m1 stop
Iberia Logo
9:15 am - 11:55 amLHR-ORD
8h 40mnonstop
$466Iberia
Find Deal
Tue, Aug 5 - Wed, Aug 20
Iberia Logo
8:35 pm - 10:30 amORD-LHR
7h 55mnonstop
Iberia Logo
9:15 am - 11:50 amLHR-ORD
8h 35mnonstop
$467Iberia
Find Deal
Mon, Aug 25 - Wed, Sep 24
British Airways Logo
9:15 pm - 11:05 amORD-LHR
7h 50mnonstop
British Airways Logo
6:20 am - 3:45 pmLHR-ORD
15h 25m1 stop
$488British Airways
Find Deal
Mon, Sep 1 - Fri, Sep 12
American Airlines Logo
2:25 pm - 10:40 amORD-LGW
14h 15m1 stop
American Airlines Logo
10:40 am - 9:22 pmLGW-ORD
16h 42m1 stop
$489American Airlines
Find Deal
Tue, Aug 5 - Tue, Aug 26
American Airlines Logo
2:25 pm - 10:40 amORD-LGW
14h 15m1 stop
American Airlines Logo
10:40 am - 9:22 pmLGW-ORD
16h 42m1 stop
$490American Airlines
Find Deal
Tue, Aug 5 - Tue, Aug 26
United Airlines Logo
1:12 pm - 5:55 amORD-LHR
10h 43m1 stop
United Airlines Logo
2:10 pm - 5:20 pmLHR-ORD
9h 10mnonstop
$497United Airlines
Find Deal
Tue, Aug 26 - Tue, Sep 2
United Airlines Logo
4:05 pm - 6:20 amORD-LHR
8h 15mnonstop
United Airlines Logo
1:45 pm - 3:55 pmLHR-ORD
32h 10m1 stop
$506United Airlines
Find Deal
Tue, Aug 26 - Tue, Sep 2

British Airways flights from Chicago to London

Our best British Airways deals on Chicago to London flight tickets
British Airways
Aug 5
ORD10:30 pmChicago O'Hare Intl
7h 45m
LHR12:15 pmLondon Heathrow
Aug 20
LHR1:10 pmLondon Heathrow
8h 45m
ORD3:55 pmChicago O'Hare Intl
British Airways
Sep 1
ORD9:15 pmChicago O'Hare Intl
7h 50m
LHR11:05 amLondon Heathrow
Sep 12
LHR6:20 amLondon Heathrow
15h 25m
1 stop
ORD3:45 pmChicago O'Hare Intl
British Airways
Jul 29
ORD5:40 pmChicago O'Hare Intl
7h 40m
LHR7:20 amLondon Heathrow
Aug 21
LHR6:20 amLondon Heathrow
15h 25m
1 stop
ORD3:45 pmChicago O'Hare Intl

Scandinavian Airlines flights from Chicago to London

Our best Scandinavian Airlines deals on Chicago to London flight tickets
Scandinavian Airlines
Nov 16
ORD7:20 pmChicago O'Hare Intl
17h 10m
1 stop
LHR6:30 pmLondon Heathrow
Nov 22
LHR10:20 amLondon Heathrow
12h 25m
1 stop
ORD4:45 pmChicago O'Hare Intl
Scandinavian Airlines
Oct 27
ORD8:20 pmChicago O'Hare Intl
14h 40m
1 stop
LHR4:00 pmLondon Heathrow
Nov 10
LHR10:20 amLondon Heathrow
12h 25m
1 stop
ORD4:45 pmChicago O'Hare Intl
Scandinavian Airlines
Dec 6
ORD7:20 pmChicago O'Hare Intl
16h 20m
1 stop
LHR5:40 pmLondon Heathrow
Dec 11
LHR6:40 amLondon Heathrow
16h 05m
1 stop
ORD4:45 pmChicago O'Hare Intl

See travel insights to London from

How to get the cheapest flight ticket from Chicago 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 typical price of a round-trip flight between Chicago and London?

What is the cheapest month to fly to London?

The cheapest month to fly to London from Chicago is in February. Flight prices, which tend to average around $648, are often lower during this time because this is during the off-season. The month of January is another great option to travel to London, with average flight prices from Chicago averaging around $667.

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

The cheapest day to depart from Chicago to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $763. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $889. 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 in the morning is the least expensive time of day to depart. momondo users have found prices as low as $689 when looking at flights departing in the morning. Flights to London are more costly in the afternoon, with an average ticket price of $824. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Chicago to London flight route?

Fly from Chicago O'Hare Intl to London Heathrow for the best Chicago - 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 when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $798 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Chicago for as low as $719 on momondo.

What cabin class options are available on Chicago to London flights?

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

You could potentially save up to 23% on your flight if you consider stops on a Chicago to London flight.

How have Chicago to London flight prices changed over time?

As of July 2025, prices for Chicago to London flights are approximately 34% cheaper when compared to flights at the same time last year.

When to book flights from Chicago to London

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

Cheap Chicago to London (CHI to LON) flight deals and tips

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

Best Price Found

$165

Fastest flight time

7h 40m

Direct flights

Every day

Airports in London

5 airports
The best one-way flight to London from Chicago in the past 72 hours is $165. The best round-trip flight deal from Chicago to London found on momondo in the last 72 hours is $427.
The fastest flight from Chicago to London takes 7h 40m
Direct flights go from Chicago 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 to London by plane?

    A flight from Chicago to London will travel around 3945.2 mi. Flights usually cover this in 7h 40m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Chicago to London refresh daily.

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

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

    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 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 to London?

  • What is the most popular airline from Chicago to London?


Best airlines flying from Chicago to London

Compare and see reviews for airlines that fly from Chicago to London with momondo
Airline
Rating
Free Cancellation
Price
SWISSPriceFrom $257Free CancellationRating
7.5
1,657 reviews
Search SWISS flights
DeltaPriceFrom $345Free CancellationRating
8.0
7,956 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom $381Free CancellationRating
7.3
1,423 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $430Free CancellationRating
6.8
7,208 reviews
Search Lufthansa flights
IcelandairPriceFrom $468Free CancellationRating
7.0
515 reviews
Search Icelandair flights
JetBluePriceFrom $505Free CancellationRating
7.3
2,908 reviews
Search JetBlue flights
TAP AIR PORTUGALPriceFrom $508Free CancellationRating
7.1
1,917 reviews
Search TAP AIR PORTUGAL flights
Aer LingusPriceFrom $541Free CancellationRating
7.1
1,160 reviews
Search Aer Lingus flights
FinnairPriceFrom $569Free CancellationRating
7.6
1,316 reviews
Search Finnair flights
IberiaPriceFrom $581Free CancellationRating
7.0
2,835 reviews
Search Iberia flights
  • Alaska Airlines Flights From Chicago to London

    Across 41 Alaska Airlines flights from Chicago to London this week, the average price was $973, with the best Alaska Airlines deals starting from $809 round-trip. 10,000 users have rated Alaska Airlines on momondo, with an average score of 8.0/10.

  • Finnair Flights From Chicago to London

    The best Finnair deal for Chicago to London flight tickets found on momondo in the last 72 hours was $569, round-trip. It should be noted that an average Finnair flight deal for this route in this time was higher, at $755 round-trip. Finnair operates 34 flights out of Chicago into London in an average week, so prices vary by time and availability. 1,316 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
Gatwick
Hounslow
Slough
Dover
Luton
Croydon
Dartford
Guildford
Stansted
Milton Keynes
Hayes
Ilford
Colchester
Chelmsford
Canterbury
Watford
Richmond
Wembley
Dagenham
St. Albans

Why use momondo?

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

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

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

Yes. momondo enables you to select and highlight flights to London from Chicago with this policy.

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

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 London from Chicago.

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

Yes momondo offers price alerts on flights to London from Chicago. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.


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1 adult
Sat 7/19
Sat 7/26

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