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Cheap flights from London, Ontario to Chicago from C$ 366

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 9/6. 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
10:05 a.m. - 1:23 p.m.
YXU
-
ORD
4h 18m
1 stop
Air Canada Logo
2:15 p.m. - 9:40 p.m.
ORD
-
YXU
6h 25m
1 stop
C$ 699Air Canada
Wed, 21 Oct - Sat, 24 Oct
Air Canada Logo
5:40 a.m. - 9:00 a.m.
YXU
-
ORD
4h 20m
1 stop
Air Canada Logo
9:50 a.m. - 2:55 p.m.
ORD
-
YXU
4h 05m
1 stop
C$ 701Air Canada
Wed, 21 Oct - Sat, 24 Oct
Air Canada Logo
5:40 a.m. - 2:52 p.m.
YXU
-
ORD
10h 12m
2 stops
Air Canada Logo
3:45 p.m. - 9:40 p.m.
ORD
-
YXU
4h 55m
1 stop
C$ 705Air Canada
Wed, 21 Oct - Sat, 24 Oct
Air Canada Logo
5:40 a.m. - 2:52 p.m.
YXU
-
ORD
10h 12m
2 stops
Air Canada Logo
3:45 p.m. - 9:40 p.m.
ORD
-
YXU
4h 55m
1 stop
C$ 706Air Canada
Wed, 21 Oct - Sat, 24 Oct
Air Canada Logo
5:40 a.m. - 2:52 p.m.
YXU
-
ORD
10h 12m
2 stops
Air Canada Logo
11:05 a.m. - 9:40 p.m.
ORD
-
YXU
9h 35m
2 stops
C$ 709Air Canada
Wed, 21 Oct - Sat, 24 Oct
Air Canada Logo
5:40 a.m. - 2:52 p.m.
YXU
-
ORD
10h 12m
2 stops
Air Canada Logo
11:05 a.m. - 9:40 p.m.
ORD
-
YXU
9h 35m
2 stops
C$ 710Air Canada
Wed, 21 Oct - Sat, 24 Oct
WestJet Logo
2:40 p.m. - 6:11 p.m.
YXU
-
MDW
28h 31m
3 stops
WestJet Logo
9:17 a.m. - 5:20 a.m.
MDW
-
YXU
19h 03m
3 stops
C$ 1,500WestJet
Fri, 12 Jun - Fri, 19 Jun
WestJet Logo
6:10 a.m. - 6:18 p.m.
YXU
-
MDW
13h 08m
2 stops
WestJet Logo
9:54 a.m. - 1:50 p.m.
MDW
-
YXU
26h 56m
2 stops
C$ 1,557WestJet
Sun, 7 Jun - Mon, 15 Jun
Multiple Airlines Logo
2:40 p.m. - 6:33 p.m.
YXU
-
MDW
28h 53m
3 stops
Multiple Airlines Logo
10:15 a.m. - 1:50 p.m.
MDW
-
YXU
26h 35m
3 stops
C$ 1,572Multiple Airlines
Fri, 29 May - Thu, 4 Jun
WestJet Logo
5:55 p.m. - 6:31 p.m.
YXU
-
MDW
25h 36m
3 stops
WestJet Logo
9:17 a.m. - 5:20 a.m.
MDW
-
YXU
19h 03m
3 stops
C$ 1,695WestJet
Thu, 11 Jun - Wed, 17 Jun

WestJet flights from London, Ontario to Chicago

Our best WestJet deals on London, Ontario to Chicago flight tickets
WestJet
7 Jun
YXU2:40 p.m.London
7h 45m
2 stops
ORD9:25 p.m.Chicago O'Hare Intl
15 Jun
ORD8:36 a.m.Chicago O'Hare Intl
28h 14m
2 stops
YXU1:50 p.m.London
C$ 1,195
WestJet
12 Jun
YXU2:40 p.m.London
28h 31m
3 stops
MDW6:11 p.m.Chicago Midway
19 Jun
MDW9:17 a.m.Chicago Midway
19h 03m
3 stops
YXU5:20 a.m.London
C$ 1,500
WestJet
7 Jun
YXU6:10 a.m.London
13h 08m
2 stops
MDW6:18 p.m.Chicago Midway
15 Jun
MDW9:54 a.m.Chicago Midway
26h 56m
2 stops
YXU1:50 p.m.London
C$ 1,557

United Airlines flights from London, Ontario to Chicago

Our best United Airlines deals on London, Ontario to Chicago flight tickets
United Airlines
25 Jun
YXU5:10 a.m.London
4h 50m
1 stop
ORD9:00 a.m.Chicago O'Hare Intl
2 Jul
ORD9:50 a.m.Chicago O'Hare Intl
4h 05m
1 stop
YXU2:55 p.m.London
C$ 823
United Airlines
9 Jun
YXU5:10 a.m.London
4h 50m
1 stop
ORD9:00 a.m.Chicago O'Hare Intl
16 Jun
ORD8:50 a.m.Chicago O'Hare Intl
5h 08m
1 stop
YXU2:58 p.m.London
C$ 824
United Airlines
11 Jun
YXU5:10 a.m.London
10h 19m
2 stops
ORD2:29 p.m.Chicago O'Hare Intl
17 Jun
ORD2:56 p.m.Chicago O'Hare Intl
5h 42m
1 stop
YXU9:38 p.m.London
C$ 830

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 15 May 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

Wed 21/10

10:05 a.m.-1:23 p.m.

1 stop4h 18m

Chicago O'Hare Intl

Sat 24/10

2:15 p.m.-9:40 p.m.

1 stop6h 25m

C$ 699
Quickest round-trip

LondonChicago

YXU - ORD

YXUORD

London

Wed 21/10

5:40 a.m.-9:00 a.m.

1 stop4h 20m

Chicago O'Hare Intl

Sat 24/10

9:50 a.m.-2:55 p.m.

1 stop4h 05m

C$ 701

LondonChicago

YXU - ORD

YXUORD

London

Wed 21/10

5:40 a.m.-2:52 p.m.

2 stops10h 12m

Chicago O'Hare Intl

Sat 24/10

3:45 p.m.-9:40 p.m.

1 stop4h 55m

C$ 705

LondonChicago

YXU - ORD

YXUORD

London

Wed 21/10

5:40 a.m.-2:52 p.m.

2 stops10h 12m

Chicago O'Hare Intl

Sat 24/10

3:45 p.m.-9:40 p.m.

1 stop4h 55m

C$ 706

LondonChicago

YXU - ORD

YXUORD

London

Wed 21/10

5:40 a.m.-2:52 p.m.

2 stops10h 12m

Chicago O'Hare Intl

Sat 24/10

11:05 a.m.-9:40 p.m.

2 stops9h 35m

C$ 709

LondonChicago

YXU - ORD

YXUORD

London

Wed 21/10

5:40 a.m.-2:52 p.m.

2 stops10h 12m

Chicago O'Hare Intl

Sat 24/10

11:05 a.m.-9:40 p.m.

2 stops9h 35m

C$ 710

LondonChicago

YXU - MDW

YXUMDW

London

Fri 12/6

2:40 p.m.-6:11 p.m.

3 stops28h 31m

Chicago Midway

Fri 19/6

9:17 a.m.-5:20 a.m.

3 stops19h 03m

C$ 1,500

LondonChicago

YXU - MDW

YXUMDW

London

Sun 7/6

6:10 a.m.-6:18 p.m.

2 stops13h 08m

Chicago Midway

Mon 15/6

9:54 a.m.-1:50 p.m.

2 stops26h 56m

C$ 1,557

LondonChicago

YXU - MDW

YXUMDW

London

Fri 29/5

2:40 p.m.-6:33 p.m.

3 stops28h 53m

Chicago Midway

Thu 4/6

10:15 a.m.-1:50 p.m.

3 stops26h 35m

C$ 1,572

LondonChicago

YXU - MDW

YXUMDW

London

Thu 11/6

5:55 p.m.-6:31 p.m.

3 stops25h 36m

Chicago Midway

Wed 17/6

9:17 a.m.-5:20 a.m.

3 stops19h 03m

C$ 1,695

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 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 55% 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 51m

Direct flights

None
The fastest flight from London, Ontario to Chicago takes 4h 51m
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 4h 51m, 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