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Cheap flights from London, Ontario to Chicago from C$ 344

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 20/3. 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
9:40 a.m. - 3:10 p.m.
YXU
-
ORD
6h 30m
1 stop
Air Canada Logo
1:55 p.m. - 9:21 p.m.
ORD
-
YXU
6h 26m
1 stop
C$ 590Air Canada
Sat, 21 Mar - Sat, 28 Mar
Air Canada Logo
5:10 a.m. - 11:18 a.m.
YXU
-
ORD
7h 08m
2 stops
Air Canada Logo
10:00 a.m. - 5:05 p.m.
ORD
-
YXU
6h 05m
1 stop
C$ 601Air Canada
Sat, 21 Mar - Sat, 28 Mar
Air Canada Logo
5:10 a.m. - 2:55 p.m.
YXU
-
ORD
10h 45m
2 stops
Air Canada Logo
7:15 a.m. - 5:05 p.m.
ORD
-
YXU
8h 50m
2 stops
C$ 602Air Canada
Sat, 21 Mar - Sat, 28 Mar
Air Canada Logo
9:30 a.m. - 2:55 p.m.
YXU
-
ORD
6h 25m
1 stop
Air Canada Logo
3:50 p.m. - 9:38 p.m.
ORD
-
YXU
4h 48m
1 stop
C$ 626Air Canada
Fri, 1 May - Mon, 4 May
Air Canada Logo
5:10 a.m. - 9:13 a.m.
YXU
-
ORD
5h 03m
1 stop
Air Canada Logo
1:55 p.m. - 9:21 p.m.
ORD
-
YXU
6h 26m
1 stop
C$ 658Air Canada
Fri, 20 Mar - Fri, 27 Mar
Air Canada Logo
5:10 a.m. - 11:10 a.m.
YXU
-
ORD
7h 00m
2 stops
Air Canada Logo
8:40 p.m. - 8:46 a.m.
ORD
-
YXU
11h 06m
1 stop
C$ 671Air Canada
Fri, 20 Mar - Fri, 27 Mar
Multiple Airlines Logo
6:15 a.m. - 9:40 a.m.
YXU
-
MDW
28h 25m
3 stops
Multiple Airlines Logo
10:25 a.m. - 5:25 a.m.
MDW
-
YXU
18h 00m
3 stops
C$ 1,489Multiple Airlines
Fri, 1 May - Mon, 4 May
WestJet Logo
8:10 p.m. - 5:45 p.m.
YXU
-
MDW
22h 35m
2 stops
WestJet Logo
10:49 a.m. - 6:35 a.m.
MDW
-
YXU
18h 46m
2 stops
C$ 1,915WestJet
Mon, 23 Feb - Thu, 26 Feb
WestJet Logo
8:10 p.m. - 9:54 a.m.
YXU
-
MDW
14h 44m
2 stops
WestJet Logo
10:49 a.m. - 6:35 a.m.
MDW
-
YXU
18h 46m
2 stops
C$ 1,920WestJet
Mon, 23 Feb - Thu, 26 Feb
WestJet Logo
8:10 p.m. - 9:54 a.m.
YXU
-
MDW
14h 44m
2 stops
WestJet Logo
1:49 p.m. - 6:35 a.m.
MDW
-
YXU
15h 46m
2 stops
C$ 2,006WestJet
Mon, 23 Feb - Mon, 2 Mar

Air Canada flights from London, Ontario to Chicago

Our best Air Canada deals on London, Ontario to Chicago flight tickets
Air Canada
21 Mar
YXU9:40 a.m.London
6h 30m
1 stop
ORD3:10 p.m.Chicago O'Hare Intl
28 Mar
ORD1:55 p.m.Chicago O'Hare Intl
6h 26m
1 stop
YXU9:21 p.m.London
C$ 590
Air Canada
21 Mar
YXU5:10 a.m.London
7h 08m
2 stops
ORD11:18 a.m.Chicago O'Hare Intl
28 Mar
ORD10:00 a.m.Chicago O'Hare Intl
6h 05m
1 stop
YXU5:05 p.m.London
C$ 601
Air Canada
21 Mar
YXU5:10 a.m.London
10h 45m
2 stops
ORD2:55 p.m.Chicago O'Hare Intl
28 Mar
ORD7:15 a.m.Chicago O'Hare Intl
8h 50m
2 stops
YXU5:05 p.m.London
C$ 602

United Airlines flights from London, Ontario to Chicago

Our best United Airlines deals on London, Ontario to Chicago flight tickets
United Airlines
8 Mar
YXU5:40 p.m.London
5h 24m
1 stop
ORD10:04 p.m.Chicago O'Hare Intl
13 Mar
ORD11:15 a.m.Chicago O'Hare Intl
9h 06m
2 stops
YXU9:21 p.m.London
C$ 699
United Airlines
1 May
YXU9:30 a.m.London
8h 01m
2 stops
ORD4:31 p.m.Chicago O'Hare Intl
4 May
ORD11:00 a.m.Chicago O'Hare Intl
9h 38m
2 stops
YXU9:38 p.m.London
C$ 706
United Airlines
8 Mar
YXU5:40 p.m.London
17h 10m
2 stops
ORD9:50 a.m.Chicago O'Hare Intl
13 Mar
ORD10:00 a.m.Chicago O'Hare Intl
10h 21m
2 stops
YXU9:21 p.m.London
C$ 708

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 4 February 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

LondonChicago

YXU - ORD

YXUORD

London

Sat 21/3

9:40 a.m.-3:10 p.m.

1 stop6h 30m

Chicago O'Hare Intl

Sat 28/3

1:55 p.m.-9:21 p.m.

1 stop6h 26m

C$ 590

LondonChicago

YXU - ORD

YXUORD

London

Sat 21/3

5:10 a.m.-11:18 a.m.

2 stops7h 08m

Chicago O'Hare Intl

Sat 28/3

10:00 a.m.-5:05 p.m.

1 stop6h 05m

C$ 601

LondonChicago

YXU - ORD

YXUORD

London

Sat 21/3

5:10 a.m.-2:55 p.m.

2 stops10h 45m

Chicago O'Hare Intl

Sat 28/3

7:15 a.m.-5:05 p.m.

2 stops8h 50m

C$ 602

LondonChicago

YXU - ORD

YXUORD

London

Fri 1/5

9:30 a.m.-2:55 p.m.

1 stop6h 25m

Chicago O'Hare Intl

Mon 4/5

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

1 stop4h 48m

C$ 626

LondonChicago

YXU - ORD

YXUORD

London

Fri 20/3

5:10 a.m.-9:13 a.m.

1 stop5h 03m

Chicago O'Hare Intl

Fri 27/3

1:55 p.m.-9:21 p.m.

1 stop6h 26m

C$ 658

LondonChicago

YXU - ORD

YXUORD

London

Fri 20/3

5:10 a.m.-11:10 a.m.

2 stops7h 00m

Chicago O'Hare Intl

Fri 27/3

8:40 p.m.-8:46 a.m.

1 stop11h 06m

C$ 671

LondonChicago

YXU - MDW

YXUMDW

London

Fri 1/5

6:15 a.m.-9:40 a.m.

3 stops28h 25m

Chicago Midway

Mon 4/5

10:25 a.m.-5:25 a.m.

3 stops18h 00m

C$ 1,489

LondonChicago

YXU - MDW

YXUMDW

London

Mon 23/2

8:10 p.m.-5:45 p.m.

2 stops22h 35m

Chicago Midway

Thu 26/2

10:49 a.m.-6:35 a.m.

2 stops18h 46m

C$ 1,915

LondonChicago

YXU - MDW

YXUMDW

London

Mon 23/2

8:10 p.m.-9:54 a.m.

2 stops14h 44m

Chicago Midway

Thu 26/2

10:49 a.m.-6:35 a.m.

2 stops18h 46m

C$ 1,920

LondonChicago

YXU - MDW

YXUMDW

London

Mon 23/2

8:10 p.m.-9:54 a.m.

2 stops14h 44m

Chicago Midway

Mon 2/3

1:49 p.m.-6:35 a.m.

2 stops15h 46m

C$ 2,006

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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 is the most popular carrier 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 64% 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

4h 21m

Direct flights

None
The fastest flight from London, Ontario to Chicago takes 4h 21m
There are no direct flights from London, Ontario to Chicago. There are no popular flight routes from London, Ontario to Chicago.
Search flight deals

  • 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 4h 21m, 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.

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

Travelling to a place near Chicago?

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

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