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Cheap flights from London, Ontario to Chicago from $209

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 3/12. 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

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:10 pm - 10:52 am
YXU
-
ORD
15h 42m
2 stops
Multiple Airlines Logo
2:20 pm - 6:35 am
ORD
-
YXU
15h 15m
1 stop
$501Multiple Airlines
Thu, Mar 26 - Mon, Mar 30
WestJet Logo
8:10 pm - 1:35 pm
YXU
-
ORD
18h 25m
1 stop
WestJet Logo
2:20 pm - 6:35 am
ORD
-
YXU
15h 15m
1 stop
$528WestJet
Thu, Mar 26 - Mon, Mar 30
Multiple Airlines Logo
8:10 pm - 1:35 pm
YXU
-
ORD
18h 25m
1 stop
Multiple Airlines Logo
7:39 pm - 6:13 pm
ORD
-
YXU
21h 34m
2 stops
$536Multiple Airlines
Sun, Mar 1 - Sat, Mar 7
Air Canada Logo
5:10 am - 9:13 am
YXU
-
ORD
5h 03m
1 stop
Air Canada Logo
3:55 pm - 9:21 pm
ORD
-
YXU
4h 26m
1 stop
$543Air Canada
Sun, Mar 1 - Sat, Mar 7
Air Canada Logo
5:10 am - 9:13 am
YXU
-
ORD
5h 03m
1 stop
Air Canada Logo
10:00 am - 5:05 pm
ORD
-
YXU
6h 05m
1 stop
$561Air Canada
Mon, Feb 23 - Thu, Feb 26
Air Canada Logo
5:10 am - 11:06 am
YXU
-
ORD
6h 56m
2 stops
Air Canada Logo
2:00 pm - 9:21 pm
ORD
-
YXU
6h 21m
1 stop
$564Air Canada
Wed, Feb 25 - Wed, Mar 4
Air Canada Logo
5:10 am - 9:13 am
YXU
-
ORD
5h 03m
1 stop
Air Canada Logo
10:00 am - 5:05 pm
ORD
-
YXU
6h 05m
1 stop
$586Air Canada
Mon, Feb 23 - Thu, Feb 26
United Airlines Logo
5:10 am - 9:50 am
YXU
-
ORD
5h 40m
1 stop
United Airlines Logo
8:50 am - 5:05 pm
ORD
-
YXU
7h 15m
2 stops
$598United Airlines
Sun, Mar 8 - Thu, Mar 12
United Airlines Logo
5:40 pm - 11:43 pm
YXU
-
ORD
7h 03m
2 stops
United Airlines Logo
10:50 am - 9:21 pm
ORD
-
YXU
9h 31m
2 stops
$600United Airlines
Sun, Mar 1 - Sat, Mar 7
United Airlines Logo
5:40 pm - 7:28 am
YXU
-
ORD
14h 48m
2 stops
United Airlines Logo
7:00 am - 9:21 pm
ORD
-
YXU
13h 21m
2 stops
$603United Airlines
Sun, Mar 8 - Fri, Mar 13

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
Mar 1
YXU5:10 amLondon
5h 03m
1 stop
ORD9:13 amChicago O'Hare Intl
Mar 7
ORD3:55 pmChicago O'Hare Intl
4h 26m
1 stop
YXU9:21 pmLondon
$543
Air Canada
Feb 23
YXU5:10 amLondon
5h 03m
1 stop
ORD9:13 amChicago O'Hare Intl
Feb 26
ORD10:00 amChicago O'Hare Intl
6h 05m
1 stop
YXU5:05 pmLondon
$561
Air Canada
Feb 25
YXU5:10 amLondon
6h 56m
2 stops
ORD11:06 amChicago O'Hare Intl
Mar 4
ORD2:00 pmChicago O'Hare Intl
6h 21m
1 stop
YXU9:21 pmLondon
$564

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
Mar 8
YXU5:10 amLondon
5h 40m
1 stop
ORD9:50 amChicago O'Hare Intl
Mar 12
ORD8:50 amChicago O'Hare Intl
7h 15m
2 stops
YXU5:05 pmLondon
$598
United Airlines
Mar 1
YXU5:40 pmLondon
7h 03m
2 stops
ORD11:43 pmChicago O'Hare Intl
Mar 7
ORD10:50 amChicago O'Hare Intl
9h 31m
2 stops
YXU9:21 pmLondon
$600
United Airlines
Mar 8
YXU5:40 pmLondon
14h 48m
2 stops
ORD7:28 amChicago O'Hare Intl
Mar 13
ORD7:00 amChicago O'Hare Intl
13h 21m
2 stops
YXU9:21 pmLondon
$603

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 January 29, 2026.
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

Thu 3/26

8:10 pm-10:52 am

2 stops15h 42m

Chicago O'Hare Intl

Mon 3/30

2:20 pm-6:35 am

1 stop15h 15m

$501

LondonChicago

YXU - ORD

YXUORD

London

Thu 3/26

8:10 pm-1:35 pm

1 stop18h 25m

Chicago O'Hare Intl

Mon 3/30

2:20 pm-6:35 am

1 stop15h 15m

$528

LondonChicago

YXU - ORD

YXUORD

London

Sun 3/1

8:10 pm-1:35 pm

1 stop18h 25m

Chicago O'Hare Intl

Sat 3/7

7:39 pm-6:13 pm

2 stops21h 34m

$536

LondonChicago

YXU - ORD

YXUORD

London

Sun 3/1

5:10 am-9:13 am

1 stop5h 03m

Chicago O'Hare Intl

Sat 3/7

3:55 pm-9:21 pm

1 stop4h 26m

$543

LondonChicago

YXU - ORD

YXUORD

London

Mon 2/23

5:10 am-9:13 am

1 stop5h 03m

Chicago O'Hare Intl

Thu 2/26

10:00 am-5:05 pm

1 stop6h 05m

$561

LondonChicago

YXU - ORD

YXUORD

London

Wed 2/25

5:10 am-11:06 am

2 stops6h 56m

Chicago O'Hare Intl

Wed 3/4

2:00 pm-9:21 pm

1 stop6h 21m

$564

LondonChicago

YXU - ORD

YXUORD

London

Mon 2/23

5:10 am-9:13 am

1 stop5h 03m

Chicago O'Hare Intl

Thu 2/26

10:00 am-5:05 pm

1 stop6h 05m

$586

LondonChicago

YXU - ORD

YXUORD

London

Sun 3/8

5:10 am-9:50 am

1 stop5h 40m

Chicago O'Hare Intl

Thu 3/12

8:50 am-5:05 pm

2 stops7h 15m

$598

LondonChicago

YXU - ORD

YXUORD

London

Sun 3/1

5:40 pm-11:43 pm

2 stops7h 03m

Chicago O'Hare Intl

Sat 3/7

10:50 am-9:21 pm

2 stops9h 31m

$600

LondonChicago

YXU - ORD

YXUORD

London

Sun 3/8

5:40 pm-7:28 am

2 stops14h 48m

Chicago O'Hare Intl

Fri 3/13

7:00 am-9:21 pm

2 stops13h 21m

$603

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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?

WestJet, Air Canada, and United Airlines are the most popular carriers 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 46% of people opting to fly with this airline when traveling to Chicago O'Hare Intl Airport. Keep in mind that there are 4 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

Fastest flight time

15h 42m

Direct flights

None
The fastest flight from London, Ontario to Chicago O'Hare Intl Airport takes 15h 42m
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.
Search flight deals

  • 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 15h 42m.

  • 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
Schaumburg
South Haven
Rockford
Merrillville
Gurnee
Naperville
Rosemont
New Buffalo
Kenosha
Joliet
Oak Brook
Orland Park
Racine
Hammond
Janesville
Tinley Park
Elgin
Aurora
South Holland

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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