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Cheap flights from Chicago to London from $263

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 5/16. 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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0 bags

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Find the cheapest flights from Chicago to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
5:30 pm - 5:20 am
ORD
-
YXU
10h 50m
1 stop
WestJet Logo
5:55 pm - 4:40 pm
YXU
-
ORD
23h 45m
1 stop
$561WestJet
Mon, May 25 - Thu, May 28
Air Canada Logo
2:15 pm - 9:38 pm
ORD
-
YXU
6h 23m
1 stop
Air Canada Logo
9:30 am - 2:55 pm
YXU
-
ORD
6h 25m
1 stop
$585Air Canada
Sat, May 23 - Tue, May 26
Air Canada Logo
9:50 am - 5:04 pm
ORD
-
YXU
6h 14m
1 stop
Air Canada Logo
5:10 am - 2:55 pm
YXU
-
ORD
10h 45m
2 stops
$593Air Canada
Tue, Apr 21 - Thu, Apr 23
Air Canada Logo
3:50 pm - 9:38 pm
ORD
-
YXU
4h 48m
1 stop
Air Canada Logo
12:20 pm - 8:08 pm
YXU
-
ORD
8h 48m
2 stops
$594Air Canada
Sat, May 23 - Tue, May 26
Multiple Airlines Logo
9:00 am - 5:20 am
ORD
-
YXU
19h 20m
2 stops
Multiple Airlines Logo
6:10 am - 4:40 pm
YXU
-
ORD
11h 30m
1 stop
$598Multiple Airlines
Sun, May 17 - Sun, May 24
Air Canada Logo
8:45 am - 5:33 pm
ORD
-
YXU
7h 48m
2 stops
Air Canada Logo
12:20 pm - 8:05 pm
YXU
-
ORD
8h 45m
2 stops
$602Air Canada
Tue, Jun 2 - Fri, Jun 5
Air Canada Logo
6:40 pm - 8:44 am
ORD
-
YXU
13h 04m
1 stop
Air Canada Logo
5:10 am - 9:10 am
YXU
-
ORD
5h 00m
1 stop
$609Air Canada
Fri, Apr 17 - Sun, Apr 19
Multiple Airlines Logo
8:30 am - 5:20 am
ORD
-
YXU
19h 50m
2 stops
Multiple Airlines Logo
5:55 pm - 4:40 pm
YXU
-
ORD
23h 45m
1 stop
$613Multiple Airlines
Fri, May 15 - Fri, May 22
Air Canada Logo
3:45 pm - 8:44 am
ORD
-
YXU
15h 59m
2 stops
Air Canada Logo
5:10 am - 2:55 pm
YXU
-
ORD
10h 45m
2 stops
$626Air Canada
Tue, Apr 21 - Thu, Apr 23
Air Canada Logo
3:45 pm - 8:44 am
ORD
-
YXU
15h 59m
2 stops
Air Canada Logo
5:10 am - 2:55 pm
YXU
-
ORD
10h 45m
2 stops
$627Air Canada
Tue, Apr 21 - Thu, Apr 23

United Airlines flights from Chicago to London, Ontario

Our best United Airlines deals on Chicago to London, Ontario flight tickets
United Airlines
May 16
ORD3:50 pmChicago O'Hare Intl
4h 48m
1 stop
YXU9:38 pmLondon
May 23
YXU5:10 amLondon
4h 55m
1 stop
ORD9:05 amChicago O'Hare Intl
$671
United Airlines
Jun 1
ORD6:00 amChicago O'Hare Intl
7h 58m
2 stops
YXU2:58 pmLondon
Jun 4
YXU9:30 amLondon
5h 36m
1 stop
ORD2:06 pmChicago O'Hare Intl
$681
United Airlines
May 16
ORD3:50 pmChicago O'Hare Intl
4h 48m
1 stop
YXU9:38 pmLondon
May 23
YXU5:10 amLondon
14h 40m
2 stops
ORD6:50 pmChicago O'Hare Intl
$686

Air Canada flights from Chicago to London, Ontario

Our best Air Canada deals on Chicago to London, Ontario flight tickets
Air Canada
May 23
ORD2:15 pmChicago O'Hare Intl
6h 23m
1 stop
YXU9:38 pmLondon
May 26
YXU9:30 amLondon
6h 25m
1 stop
ORD2:55 pmChicago O'Hare Intl
$585
Air Canada
Apr 21
ORD9:50 amChicago O'Hare Intl
6h 14m
1 stop
YXU5:04 pmLondon
Apr 23
YXU5:10 amLondon
10h 45m
2 stops
ORD2:55 pmChicago O'Hare Intl
$593
Air Canada
May 23
ORD3:50 pmChicago O'Hare Intl
4h 48m
1 stop
YXU9:38 pmLondon
May 26
YXU12:20 pmLondon
8h 48m
2 stops
ORD8:08 pmChicago O'Hare Intl
$594

momondo Fare Finder

 
Customize your flight search to find flights from Chicago to London, Ontario 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 832,500 searches. Data last updated April 5, 2026.
Use the filters below to find and compare flights from Chicago to London, Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 5/25

5:30 pm-5:20 am

1 stop10h 50m

London

Thu 5/28

5:55 pm-4:40 pm

1 stop23h 45m

$561
Quickest round-trip

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 5/23

2:15 pm-9:38 pm

1 stop6h 23m

London

Tue 5/26

9:30 am-2:55 pm

1 stop6h 25m

$585

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Tue 4/21

9:50 am-5:04 pm

1 stop6h 14m

London

Thu 4/23

5:10 am-2:55 pm

2 stops10h 45m

$593

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 5/23

3:50 pm-9:38 pm

1 stop4h 48m

London

Tue 5/26

12:20 pm-8:08 pm

2 stops8h 48m

$594

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sun 5/17

9:00 am-5:20 am

2 stops19h 20m

London

Sun 5/24

6:10 am-4:40 pm

1 stop11h 30m

$598

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Tue 6/2

8:45 am-5:33 pm

2 stops7h 48m

London

Fri 6/5

12:20 pm-8:05 pm

2 stops8h 45m

$602

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Fri 4/17

6:40 pm-8:44 am

1 stop13h 04m

London

Sun 4/19

5:10 am-9:10 am

1 stop5h 00m

$609

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Fri 5/15

8:30 am-5:20 am

2 stops19h 50m

London

Fri 5/22

5:55 pm-4:40 pm

1 stop23h 45m

$613

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Tue 4/21

3:45 pm-8:44 am

2 stops15h 59m

London

Thu 4/23

5:10 am-2:55 pm

2 stops10h 45m

$626

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Tue 4/21

3:45 pm-8:44 am

2 stops15h 59m

London

Thu 4/23

5:10 am-2:55 pm

2 stops10h 45m

$627

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Chicago to London, Ontario

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 airline that flies from Chicago to London?

Air Canada is the most popular carrier operating from Chicago to London

What airlines fly to London, Ontario?

United Airlines, Air Canada and American Airlines are the top three most popular airlines that fly to London, Ontario from Chicago according to our data. United Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to London, Ontario. Keep in mind that there are 7 different airlines that fly to London, Ontario on a routine basis, so you have a few additional options to choose from.

When to book flights from Chicago to London, Ontario

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

Cheap Chicago to London, Ontario (CHI to YXU) flight deals and tips

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

Fastest flight time

4h 48m

Direct flights

None
The fastest flight from Chicago to London, Ontario takes 4h 48m
There are no direct flights from Chicago to London, Ontario. There are no popular flight routes from Chicago to London, Ontario.
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Frequently asked questions about flying from Chicago to London, Ontario

  • How far is Chicago to London by plane?

    Chicago and London are 334.6 mi apart from one another. In terms of flight time, this usually takes a little over 4h 48m.

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

    Prices for flights from Chicago to London Airport refresh daily.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago to London Airport.

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

    The travel and health documents required for your trip to London Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Grand Bend
Port Stanley

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Chicago to London for you.

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

Flights from Chicago to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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?

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.

An easier way to manage your London, Ontario trip

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