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Cheap flights from London, Ontario to Chicago from C$ 351

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 2/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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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.
Air Canada Logo
5:10 a.m. - 9:10 a.m.
YXU
-
ORD
5h 00m
1 stop
Air Canada Logo
4:15 p.m. - 9:19 p.m.
ORD
-
YXU
4h 04m
1 stop
C$ 629Air Canada
Thu, 23 Apr - Thu, 30 Apr
Air Canada Logo
5:10 a.m. - 9:00 a.m.
YXU
-
ORD
4h 50m
1 stop
Air Canada Logo
3:50 p.m. - 9:38 p.m.
ORD
-
YXU
4h 48m
1 stop
C$ 643Air Canada
Sun, 3 May - Sun, 10 May
Air Canada Logo
9:30 a.m. - 1:25 p.m.
YXU
-
ORD
4h 55m
1 stop
Air Canada Logo
9:55 a.m. - 2:58 p.m.
ORD
-
YXU
4h 03m
1 stop
C$ 644Air Canada
Sat, 30 May - Wed, 3 Jun
Air Canada Logo
12:20 p.m. - 4:59 p.m.
YXU
-
ORD
5h 39m
1 stop
Air Canada Logo
2:15 p.m. - 9:38 p.m.
ORD
-
YXU
6h 23m
1 stop
C$ 665Air Canada
Sat, 23 May - Sat, 30 May
Air Canada Logo
9:30 a.m. - 1:25 p.m.
YXU
-
ORD
4h 55m
1 stop
Air Canada Logo
9:55 a.m. - 5:33 p.m.
ORD
-
YXU
6h 38m
1 stop
C$ 672Air Canada
Fri, 22 May - Fri, 29 May
Air Canada Logo
12:20 p.m. - 4:59 p.m.
YXU
-
ORD
5h 39m
1 stop
Air Canada Logo
2:15 p.m. - 9:38 p.m.
ORD
-
YXU
6h 23m
1 stop
C$ 687Air Canada
Sat, 23 May - Sat, 30 May
WestJet Logo
5:55 p.m. - 12:42 p.m.
YXU
-
MDW
19h 47m
3 stops
WestJet Logo
9:23 a.m. - 1:50 p.m.
MDW
-
YXU
27h 27m
3 stops
C$ 1,185WestJet
Sat, 30 May - Thu, 4 Jun
WestJet Logo
5:55 p.m. - 12:42 p.m.
YXU
-
MDW
19h 47m
3 stops
WestJet Logo
9:23 a.m. - 1:50 p.m.
MDW
-
YXU
27h 27m
3 stops
C$ 1,189WestJet
Sat, 30 May - Thu, 4 Jun
Multiple Airlines Logo
2:40 p.m. - 5:56 p.m.
YXU
-
MDW
28h 16m
2 stops
Multiple Airlines Logo
9:23 a.m. - 8:53 a.m.
MDW
-
YXU
22h 30m
3 stops
C$ 1,249Multiple Airlines
Fri, 22 May - Fri, 29 May
WestJet Logo
5:55 p.m. - 6:33 p.m.
YXU
-
MDW
25h 38m
3 stops
WestJet Logo
1:59 p.m. - 1:50 p.m.
MDW
-
YXU
22h 51m
2 stops
C$ 1,339WestJet
Sat, 30 May - Thu, 4 Jun

Air Canada flights from London, Ontario to Chicago

Our best Air Canada deals on London, Ontario to Chicago flight tickets
Air Canada
23 Apr
YXU5:10 a.m.London
5h 00m
1 stop
ORD9:10 a.m.Chicago O'Hare Intl
30 Apr
ORD4:15 p.m.Chicago O'Hare Intl
4h 04m
1 stop
YXU9:19 p.m.London
C$ 629
Air Canada
23 May
YXU12:20 p.m.London
5h 39m
1 stop
ORD4:59 p.m.Chicago O'Hare Intl
30 May
ORD2:15 p.m.Chicago O'Hare Intl
6h 23m
1 stop
YXU9:38 p.m.London
C$ 665
Air Canada
22 May
YXU9:30 a.m.London
4h 55m
1 stop
ORD1:25 p.m.Chicago O'Hare Intl
29 May
ORD9:55 a.m.Chicago O'Hare Intl
6h 38m
1 stop
YXU5:33 p.m.London
C$ 672

United Airlines flights from London, Ontario to Chicago

Our best United Airlines deals on London, Ontario to Chicago flight tickets
United Airlines
21 May
YXU12:20 p.m.London
5h 39m
1 stop
ORD4:59 p.m.Chicago O'Hare Intl
28 May
ORD2:56 p.m.Chicago O'Hare Intl
5h 42m
1 stop
YXU9:38 p.m.London
C$ 748
United Airlines
22 May
YXU6:10 p.m.London
4h 55m
1 stop
ORD10:05 p.m.Chicago O'Hare Intl
29 May
ORD5:00 a.m.Chicago O'Hare Intl
11h 33m
2 stops
YXU5:33 p.m.London
C$ 750
United Airlines
21 May
YXU5:10 a.m.London
7h 56m
2 stops
ORD12:06 p.m.Chicago O'Hare Intl
28 May
ORD11:03 a.m.Chicago O'Hare Intl
9h 35m
2 stops
YXU9:38 p.m.London
C$ 755

momondo Fare Finder

 
Customize your flight search to find flights from London, Ontario to Chicago 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 96,600 searches. Data last updated 11 April 2026.
Use the filters below to find and compare flights from London, Ontario to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonChicago

YXU - ORD

YXUORD

London

Thu 23/4

5:10 a.m.-9:10 a.m.

1 stop5h 00m

Chicago O'Hare Intl

Thu 30/4

4:15 p.m.-9:19 p.m.

1 stop4h 04m

C$ 629

LondonChicago

YXU - ORD

YXUORD

London

Sun 3/5

5:10 a.m.-9:00 a.m.

1 stop4h 50m

Chicago O'Hare Intl

Sun 10/5

3:50 p.m.-9:38 p.m.

1 stop4h 48m

C$ 643
Quickest round-trip

LondonChicago

YXU - ORD

YXUORD

London

Sat 30/5

9:30 a.m.-1:25 p.m.

1 stop4h 55m

Chicago O'Hare Intl

Wed 3/6

9:55 a.m.-2:58 p.m.

1 stop4h 03m

C$ 644

LondonChicago

YXU - ORD

YXUORD

London

Sat 23/5

12:20 p.m.-4:59 p.m.

1 stop5h 39m

Chicago O'Hare Intl

Sat 30/5

2:15 p.m.-9:38 p.m.

1 stop6h 23m

C$ 665

LondonChicago

YXU - ORD

YXUORD

London

Fri 22/5

9:30 a.m.-1:25 p.m.

1 stop4h 55m

Chicago O'Hare Intl

Fri 29/5

9:55 a.m.-5:33 p.m.

1 stop6h 38m

C$ 672

LondonChicago

YXU - ORD

YXUORD

London

Sat 23/5

12:20 p.m.-4:59 p.m.

1 stop5h 39m

Chicago O'Hare Intl

Sat 30/5

2:15 p.m.-9:38 p.m.

1 stop6h 23m

C$ 687

LondonChicago

YXU - MDW

YXUMDW

London

Sat 30/5

5:55 p.m.-12:42 p.m.

3 stops19h 47m

Chicago Midway

Thu 4/6

9:23 a.m.-1:50 p.m.

3 stops27h 27m

C$ 1,185

LondonChicago

YXU - MDW

YXUMDW

London

Sat 30/5

5:55 p.m.-12:42 p.m.

3 stops19h 47m

Chicago Midway

Thu 4/6

9:23 a.m.-1:50 p.m.

3 stops27h 27m

C$ 1,189

LondonChicago

YXU - MDW

YXUMDW

London

Fri 22/5

2:40 p.m.-5:56 p.m.

2 stops28h 16m

Chicago Midway

Fri 29/5

9:23 a.m.-8:53 a.m.

3 stops22h 30m

C$ 1,249

LondonChicago

YXU - MDW

YXUMDW

London

Sat 30/5

5:55 p.m.-6:33 p.m.

3 stops25h 38m

Chicago Midway

Thu 4/6

1:59 p.m.-1:50 p.m.

2 stops22h 51m

C$ 1,339

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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

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?

Air Canada and United Airlines are the most popular carriers operating from London to Chicago

Which airlines fly to Chicago?

Air Canada, United Airlines and American Airlines are the top three most popular airlines that fly to Chicago from London, Ontario according to our data. Air Canada is the first choice among our users, with 61% of people opting to fly with this airline when travelling to Chicago. Keep in mind that there are 5 different airlines that fly to Chicago on a routine basis, so you have a few additional options to choose from.

When to book flights from London, Ontario to Chicago

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

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

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

Fastest flight time

5h 40m

Direct flights

None
The fastest flight from London, Ontario to Chicago takes 5h 40m
There are no direct flights from London, Ontario to Chicago. There are no popular flight routes from London, Ontario to Chicago.
Search flight deals

Frequently asked questions about flying from London, Ontario to Chicago

  • How far is London to Chicago by plane?

    The straight-line distance from London to Chicago is 538.5 km. Flights usually cover this in 5h 40m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from London Airport to Chicago are updated daily.

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

    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 London Airport to Chicago.

  • What documentation or ID do you need to fly to Chicago?

    The required travel and health documents for your Chicago trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Chicago. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Travelling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Merrillville
Hammond
Munster

Why use momondo?

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

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 London to Chicago for 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?

Once you have performed a search for London to Chicago flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for London to Chicago flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Airports listed have a maximum distance of 25.6 km from Chicago
Chicago Midway Airport
Chicago O'Hare Intl Airport