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Cheap flights from London, Ontario to Chicago from C$ 355

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 6/8. 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
1 adult, Economy, 0 bags

Find the cheapest flights from London, Ontario to Chicago

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
6:10 a.m. - 4:40 p.m.
YXU
-
ORD
11h 30m
1 stop
WestJet Logo
5:30 p.m. - 7:50 p.m.
ORD
-
YXU
25h 20m
1 stop
C$ 614WestJet
Mon, 24 Aug - Mon, 31 Aug
WestJet Logo
6:10 a.m. - 4:40 p.m.
YXU
-
ORD
11h 30m
1 stop
WestJet Logo
5:30 p.m. - 7:50 p.m.
ORD
-
YXU
25h 20m
1 stop
C$ 626WestJet
Mon, 24 Aug - Mon, 31 Aug
WestJet Logo
6:10 a.m. - 4:40 p.m.
YXU
-
ORD
11h 30m
1 stop
WestJet Logo
5:30 p.m. - 1:50 p.m.
ORD
-
YXU
19h 20m
2 stops
C$ 671WestJet
Mon, 24 Aug - Mon, 31 Aug
WestJet Logo
6:10 a.m. - 4:40 p.m.
YXU
-
ORD
11h 30m
1 stop
WestJet Logo
5:30 p.m. - 1:50 p.m.
ORD
-
YXU
19h 20m
2 stops
C$ 684WestJet
Mon, 24 Aug - Mon, 31 Aug
Air Canada Logo
10:05 a.m. - 2:55 p.m.
YXU
-
ORD
5h 50m
1 stop
Air Canada Logo
9:50 a.m. - 2:52 p.m.
ORD
-
YXU
4h 02m
1 stop
C$ 713Air Canada
Thu, 23 Jul - Wed, 29 Jul
WestJet Logo
5:55 p.m. - 4:40 p.m.
YXU
-
ORD
23h 45m
1 stop
WestJet Logo
5:30 p.m. - 5:20 a.m.
ORD
-
YXU
10h 50m
1 stop
C$ 722WestJet
Tue, 18 Aug - Tue, 25 Aug
Air Canada Logo
10:05 a.m. - 2:55 p.m.
YXU
-
ORD
5h 50m
1 stop
Air Canada Logo
8:45 a.m. - 8:32 p.m.
ORD
-
YXU
10h 47m
2 stops
C$ 729Air Canada
Thu, 23 Jul - Wed, 29 Jul
Air Canada Logo
10:05 a.m. - 2:55 p.m.
YXU
-
ORD
5h 50m
1 stop
Air Canada Logo
3:45 p.m. - 9:40 p.m.
ORD
-
YXU
4h 55m
1 stop
C$ 757Air Canada
Tue, 20 Oct - Sat, 24 Oct
Air Canada Logo
10:05 a.m. - 2:55 p.m.
YXU
-
ORD
5h 50m
1 stop
Air Canada Logo
3:45 p.m. - 9:40 p.m.
ORD
-
YXU
4h 55m
1 stop
C$ 759Air Canada
Tue, 20 Oct - Sat, 24 Oct
Multiple Airlines Logo
6:10 a.m. - 2:35 p.m.
YXU
-
MDW
33h 25m
3 stops
Multiple Airlines Logo
3:15 p.m. - 4:45 p.m.
MDW
-
YXU
24h 30m
3 stops
C$ 1,281Multiple Airlines
Mon, 24 Aug - Mon, 31 Aug

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United Airlines flights from London, Ontario to Chicago

Our best United Airlines deals on London, Ontario to Chicago flight tickets
United Airlines
8 Aug
YXU5:40 a.m.London
5h 10m
1 stop
ORD9:50 a.m.Chicago O'Hare Intl
15 Aug
ORD5:00 a.m.Chicago O'Hare Intl
11h 42m
2 stops
YXU5:42 p.m.London
C$ 855
United Airlines
18 Aug
YXU5:40 a.m.London
9h 50m
2 stops
ORD2:30 p.m.Chicago O'Hare Intl
25 Aug
ORD8:45 a.m.Chicago O'Hare Intl
7h 57m
2 stops
YXU5:42 p.m.London
C$ 859
United Airlines
7 Aug
YXU3:30 p.m.London
9h 01m
2 stops
ORD11:31 p.m.Chicago O'Hare Intl
14 Aug
ORD2:52 p.m.Chicago O'Hare Intl
5h 48m
1 stop
YXU9:40 p.m.London
C$ 862

WestJet flights from London, Ontario to Chicago

Our best WestJet deals on London, Ontario to Chicago flight tickets
WestJet
24 Aug
YXU6:10 a.m.London
11h 30m
1 stop
ORD4:40 p.m.Chicago O'Hare Intl
31 Aug
ORD5:30 p.m.Chicago O'Hare Intl
25h 20m
1 stop
YXU7:50 p.m.London
C$ 614
WestJet
24 Aug
YXU6:10 a.m.London
11h 30m
1 stop
ORD4:40 p.m.Chicago O'Hare Intl
31 Aug
ORD5:30 p.m.Chicago O'Hare Intl
25h 20m
1 stop
YXU7:50 p.m.London
C$ 626
WestJet
24 Aug
YXU6:10 a.m.London
11h 30m
1 stop
ORD4:40 p.m.Chicago O'Hare Intl
31 Aug
ORD5:30 p.m.Chicago O'Hare Intl
19h 20m
2 stops
YXU1:50 p.m.London
C$ 671

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 12 July 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

Mon 24/8

6:10 a.m.-4:40 p.m.

1 stop11h 30m

Chicago O'Hare Intl

Mon 31/8

5:30 p.m.-7:50 p.m.

1 stop25h 20m

C$ 614

LondonChicago

YXU - ORD

YXUORD

London

Mon 24/8

6:10 a.m.-4:40 p.m.

1 stop11h 30m

Chicago O'Hare Intl

Mon 31/8

5:30 p.m.-7:50 p.m.

1 stop25h 20m

C$ 626

LondonChicago

YXU - ORD

YXUORD

London

Mon 24/8

6:10 a.m.-4:40 p.m.

1 stop11h 30m

Chicago O'Hare Intl

Mon 31/8

5:30 p.m.-1:50 p.m.

2 stops19h 20m

C$ 671

LondonChicago

YXU - ORD

YXUORD

London

Mon 24/8

6:10 a.m.-4:40 p.m.

1 stop11h 30m

Chicago O'Hare Intl

Mon 31/8

5:30 p.m.-1:50 p.m.

2 stops19h 20m

C$ 684
Quickest round-trip

LondonChicago

YXU - ORD

YXUORD

London

Thu 23/7

10:05 a.m.-2:55 p.m.

1 stop5h 50m

Chicago O'Hare Intl

Wed 29/7

9:50 a.m.-2:52 p.m.

1 stop4h 02m

C$ 713

LondonChicago

YXU - ORD

YXUORD

London

Tue 18/8

5:55 p.m.-4:40 p.m.

1 stop23h 45m

Chicago O'Hare Intl

Tue 25/8

5:30 p.m.-5:20 a.m.

1 stop10h 50m

C$ 722

LondonChicago

YXU - ORD

YXUORD

London

Thu 23/7

10:05 a.m.-2:55 p.m.

1 stop5h 50m

Chicago O'Hare Intl

Wed 29/7

8:45 a.m.-8:32 p.m.

2 stops10h 47m

C$ 729

LondonChicago

YXU - ORD

YXUORD

London

Tue 20/10

10:05 a.m.-2:55 p.m.

1 stop5h 50m

Chicago O'Hare Intl

Sat 24/10

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

1 stop4h 55m

C$ 757

LondonChicago

YXU - ORD

YXUORD

London

Tue 20/10

10:05 a.m.-2:55 p.m.

1 stop5h 50m

Chicago O'Hare Intl

Sat 24/10

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

1 stop4h 55m

C$ 759

LondonChicago

YXU - MDW

YXUMDW

London

Mon 24/8

6:10 a.m.-2:35 p.m.

3 stops33h 25m

Chicago Midway

Mon 31/8

3:15 p.m.-4:45 p.m.

3 stops24h 30m

C$ 1,281

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?

WestJet 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 58% 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 22m

Direct flights

None
The fastest flight from London, Ontario to Chicago takes 5h 22m
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 22m, 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
Valparaiso
Portage

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