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Cheap flights from London, Ontario to Chicago from $259

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London, Ontario to Chicago departing on 10/31. 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 London, Ontario to Chicago

Cheap round-trip flights

WestJet Logo
8:00 pm - 4:43 pmYXU-ORD
21h 43m1 stop
WestJet Logo
5:30 pm - 7:12 pmORD-YXU
24h 42m1 stop
$372WestJet
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Wed, Oct 22 - Sat, Oct 25
Multiple Airlines Logo
6:00 am - 11:59 pmYXU-ORD
18h 59m2 stops
Multiple Airlines Logo
5:30 pm - 7:12 pmORD-YXU
24h 42m1 stop
$434Multiple Airlines
Find Deal
Wed, Oct 22 - Sat, Oct 25
Air Canada Logo
9:25 am - 3:10 pmYXU-ORD
6h 45m1 stop
Air Canada Logo
2:00 pm - 9:21 pmORD-YXU
6h 21m1 stop
$468Air Canada
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Sun, Nov 2 - Sun, Nov 9
Air Canada Logo
9:25 am - 1:01 pmYXU-ORD
4h 36m1 stop
Air Canada Logo
10:00 am - 5:05 pmORD-YXU
6h 05m1 stop
$477Air Canada
Find Deal
Sat, Nov 8 - Mon, Nov 10
Air Canada Logo
5:15 am - 9:13 amYXU-ORD
4h 58m1 stop
Air Canada Logo
2:00 pm - 9:21 pmORD-YXU
6h 21m1 stop
$478Air Canada
Find Deal
Wed, Dec 3 - Sat, Dec 6
Air Canada Logo
5:15 am - 2:55 pmYXU-ORD
10h 40m2 stops
Air Canada Logo
10:00 am - 5:05 pmORD-YXU
6h 05m1 stop
$483Air Canada
Find Deal
Wed, Dec 3 - Sat, Dec 6
Air Canada Logo
9:55 am - 8:17 pmYXU-ORD
11h 22m2 stops
Air Canada Logo
10:40 am - 9:27 pmORD-YXU
9h 47m2 stops
$488Air Canada
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Wed, Oct 22 - Sat, Oct 25
United Airlines Logo
5:40 pm - 7:41 amYXU-ORD
15h 01m2 stops
United Airlines Logo
10:00 am - 5:05 pmORD-YXU
6h 05m1 stop
$528United Airlines
Find Deal
Sun, Nov 2 - Sun, Nov 9
Multiple Airlines Logo
6:00 am - 12:31 pmYXU-ORD
31h 31m3 stops
Multiple Airlines Logo
4:45 pm - 7:12 pmORD-YXU
25h 27m3 stops
$533Multiple Airlines
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Wed, Oct 22 - Sat, Oct 25
United Airlines Logo
5:40 pm - 7:41 amYXU-ORD
15h 01m2 stops
United Airlines Logo
8:50 am - 5:05 pmORD-YXU
7h 15m2 stops
$548United Airlines
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Sun, Nov 2 - Sun, Nov 9

Air Canada flights from London, Ontario to Chicago O'Hare Intl Airport

Our best Air Canada deals on London, Ontario to Chicago O'Hare Intl Airport flight tickets
Air Canada
Nov 2
YXU9:25 amLondon
6h 45m
1 stop
ORD3:10 pmChicago O'Hare Intl
Nov 9
ORD2:00 pmChicago O'Hare Intl
6h 21m
1 stop
YXU9:21 pmLondon
$468
Find similar
Air Canada
Nov 8
YXU9:25 amLondon
4h 36m
1 stop
ORD1:01 pmChicago O'Hare Intl
Nov 10
ORD10:00 amChicago O'Hare Intl
6h 05m
1 stop
YXU5:05 pmLondon
$477
Find similar
Air Canada
Dec 3
YXU5:15 amLondon
4h 58m
1 stop
ORD9:13 amChicago O'Hare Intl
Dec 6
ORD2:00 pmChicago O'Hare Intl
6h 21m
1 stop
YXU9:21 pmLondon
$478
Find similar

United Airlines flights from London, Ontario to Chicago O'Hare Intl Airport

Our best United Airlines deals on London, Ontario to Chicago O'Hare Intl Airport flight tickets
United Airlines
Nov 2
YXU5:40 pmLondon
15h 01m
2 stops
ORD7:41 amChicago O'Hare Intl
Nov 9
ORD10:00 amChicago O'Hare Intl
6h 05m
1 stop
YXU5:05 pmLondon
$528
Find similar
United Airlines
Nov 2
YXU5:40 pmLondon
15h 01m
2 stops
ORD7:41 amChicago O'Hare Intl
Nov 9
ORD8:50 amChicago O'Hare Intl
7h 15m
2 stops
YXU5:05 pmLondon
$548
Find similar
United Airlines
Oct 14
YXU9:55 amLondon
14h 20m
2 stops
ORD11:15 pmChicago O'Hare Intl
Oct 21
ORD7:10 amChicago O'Hare Intl
13h 17m
2 stops
YXU9:27 pmLondon
$590
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from London, Ontario 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 832,500 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from London, Ontario to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonChicago

YXU - ORD

YXUORD

London

Wed 10/22

8:00 pm-4:43 pm

1 stop21h 43m

Chicago O'Hare Intl

Sat 10/25

5:30 pm-7:12 pm

1 stop24h 42m

$372

LondonChicago

YXU - ORD

YXUORD

London

Wed 10/22

6:00 am-11:59 pm

2 stops18h 59m

Chicago O'Hare Intl

Sat 10/25

5:30 pm-7:12 pm

1 stop24h 42m

$434

LondonChicago

YXU - ORD

YXUORD

London

Sun 11/2

9:25 am-3:10 pm

1 stop6h 45m

Chicago O'Hare Intl

Sun 11/9

2:00 pm-9:21 pm

1 stop6h 21m

$468

LondonChicago

YXU - ORD

YXUORD

London

Sat 11/8

9:25 am-1:01 pm

1 stop4h 36m

Chicago O'Hare Intl

Mon 11/10

10:00 am-5:05 pm

1 stop6h 05m

$477

LondonChicago

YXU - ORD

YXUORD

London

Wed 12/3

5:15 am-9:13 am

1 stop4h 58m

Chicago O'Hare Intl

Sat 12/6

2:00 pm-9:21 pm

1 stop6h 21m

$478

LondonChicago

YXU - ORD

YXUORD

London

Wed 12/3

5:15 am-2:55 pm

2 stops10h 40m

Chicago O'Hare Intl

Sat 12/6

10:00 am-5:05 pm

1 stop6h 05m

$483

LondonChicago

YXU - ORD

YXUORD

London

Wed 10/22

9:55 am-8:17 pm

2 stops11h 22m

Chicago O'Hare Intl

Sat 10/25

10:40 am-9:27 pm

2 stops9h 47m

$488

LondonChicago

YXU - ORD

YXUORD

London

Sun 11/2

5:40 pm-7:41 am

2 stops15h 01m

Chicago O'Hare Intl

Sun 11/9

10:00 am-5:05 pm

1 stop6h 05m

$528

LondonChicago

YXU - ORD

YXUORD

London

Wed 10/22

6:00 am-12:31 pm

3 stops31h 31m

Chicago O'Hare Intl

Sat 10/25

4:45 pm-7:12 pm

3 stops25h 27m

$533

LondonChicago

YXU - ORD

YXUORD

London

Sun 11/2

5:40 pm-7:41 am

2 stops15h 01m

Chicago O'Hare Intl

Sun 11/9

8:50 am-5:05 pm

2 stops7h 15m

$548

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Chicago from

How to get the cheapest flight ticket from London, Ontario 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 airline that flies from London to Chicago O'Hare Intl?

Air Canada is the most popular carrier operating from London to Chicago O'Hare Intl

What airlines fly to Chicago O'Hare Intl Airport?

Air Canada, United Airlines and American Airlines are the top three most popular airlines that fly to Chicago O'Hare Intl Airport from London, Ontario according to our data. Air Canada is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Chicago O'Hare Intl Airport. Keep in mind that there are 3 different airlines that fly to Chicago O'Hare Intl Airport on a routine basis, so you have a few additional options to choose from.

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

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

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

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

Direct flights

None
There are no direct flights from London, Ontario to Chicago O'Hare Intl Airport. There are no popular flight routes from London, Ontario to Chicago O'Hare Intl Airport.
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  • How far is London to Chicago O'Hare Intl by plane?

    There are 346.6 mi between London and Chicago O'Hare Intl. A reasonable flight in good conditions will take 4h 19m.

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

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

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

  • What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

    The necessary travel and health documents for your Chicago O'Hare Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lake Geneva
South Haven
Rockford
Schaumburg
Merrillville
Gurnee
Naperville
Rosemont
Kenosha
New Buffalo
Joliet
Oak Brook
Racine
Hammond
Orland Park
Tinley Park
Elgin
Aurora
Janesville
Benton Harbor

Why use momondo?

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

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

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 offers price alerts on flights to Chicago from London. 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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