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Cheap flights from London, Ontario to Chicago from C$ 277

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 15/9. 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. - 4:45 p.m.
ORD
-
YXU
22h 15m
1 stop
C$ 689WestJet
Tue, 15 Sep - Thu, 17 Sep
WestJet Logo
6:10 a.m. - 4:40 p.m.
YXU
-
ORD
11h 30m
1 stop
WestJet Logo
5:30 p.m. - 5:20 a.m.
ORD
-
YXU
10h 50m
1 stop
C$ 729WestJet
Fri, 11 Sep - Fri, 18 Sep
Air Canada Logo
3:30 p.m. - 7:52 p.m.
YXU
-
ORD
5h 22m
1 stop
Air Canada Logo
8:40 a.m. - 5:45 p.m.
ORD
-
YXU
8h 05m
2 stops
C$ 751Air Canada
Mon, 31 Aug - Sun, 6 Sep
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$ 755Air Canada
Mon, 31 Aug - Sun, 6 Sep
Air Canada Logo
5:40 a.m. - 9:00 a.m.
YXU
-
ORD
4h 20m
1 stop
Air Canada Logo
2:15 p.m. - 9:40 p.m.
ORD
-
YXU
6h 25m
1 stop
C$ 788Air Canada
Thu, 1 Oct - Mon, 5 Oct
Air Canada Logo
5:40 a.m. - 2:52 p.m.
YXU
-
ORD
10h 12m
2 stops
Air Canada Logo
9:50 a.m. - 2:55 p.m.
ORD
-
YXU
4h 05m
1 stop
C$ 792Air Canada
Thu, 1 Oct - Mon, 5 Oct
Air Canada Logo
10:05 a.m. - 1:22 p.m.
YXU
-
ORD
4h 17m
1 stop
Air Canada Logo
9:55 a.m. - 2:50 p.m.
ORD
-
YXU
3h 55m
1 stop
C$ 796Air Canada
Wed, 2 Sep - Tue, 8 Sep
Air Canada Logo
5:40 a.m. - 2:52 p.m.
YXU
-
ORD
10h 12m
2 stops
Air Canada Logo
8:45 a.m. - 5:45 p.m.
ORD
-
YXU
8h 00m
2 stops
C$ 797Air Canada
Thu, 1 Oct - Mon, 5 Oct
Air Canada Logo
5:40 a.m. - 2:52 p.m.
YXU
-
ORD
10h 12m
2 stops
Air Canada Logo
8:45 a.m. - 5:45 p.m.
ORD
-
YXU
8h 00m
2 stops
C$ 824Air Canada
Thu, 1 Oct - Mon, 5 Oct
Multiple Airlines Logo
6:10 a.m. - 4:40 p.m.
YXU
-
ORD
11h 30m
1 stop
Multiple Airlines Logo
7:20 a.m. - 5:20 a.m.
ORD
-
YXU
21h 00m
2 stops
C$ 830Multiple Airlines
Tue, 15 Sep - Thu, 17 Sep

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Air Canada flights from London, Ontario to Chicago

Our best Air Canada deals on London, Ontario to Chicago flight tickets
Air Canada
31 Aug
YXU3:30 p.m.London
5h 22m
1 stop
ORD7:52 p.m.Chicago O'Hare Intl
6 Sep
ORD8:40 a.m.Chicago O'Hare Intl
8h 05m
2 stops
YXU5:45 p.m.London
C$ 751
Air Canada
31 Aug
YXU10:05 a.m.London
5h 50m
1 stop
ORD2:55 p.m.Chicago O'Hare Intl
6 Sep
ORD3:45 p.m.Chicago O'Hare Intl
4h 55m
1 stop
YXU9:40 p.m.London
C$ 755
Air Canada
1 Oct
YXU5:40 a.m.London
4h 20m
1 stop
ORD9:00 a.m.Chicago O'Hare Intl
5 Oct
ORD2:15 p.m.Chicago O'Hare Intl
6h 25m
1 stop
YXU9:40 p.m.London
C$ 788

United Airlines flights from London, Ontario to Chicago

Our best United Airlines deals on London, Ontario to Chicago flight tickets
United Airlines
14 Sep
YXU5:40 a.m.London
4h 20m
1 stop
ORD9:00 a.m.Chicago O'Hare Intl
21 Sep
ORD9:55 a.m.Chicago O'Hare Intl
3h 55m
1 stop
YXU2:50 p.m.London
C$ 893
United Airlines
14 Sep
YXU3:30 p.m.London
9h 58m
2 stops
ORD12:28 a.m.Chicago O'Hare Intl
21 Sep
ORD12:55 p.m.Chicago O'Hare Intl
7h 45m
2 stops
YXU9:40 p.m.London
C$ 900
United Airlines
2 Sep
YXU10:05 a.m.London
9h 34m
2 stops
ORD6:39 p.m.Chicago O'Hare Intl
8 Sep
ORD9:55 a.m.Chicago O'Hare Intl
3h 55m
1 stop
YXU2:50 p.m.London
C$ 901

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 3 August 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

Tue 15/9

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

1 stop11h 30m

Chicago O'Hare Intl

Thu 17/9

5:30 p.m.-4:45 p.m.

1 stop22h 15m

C$ 689

LondonChicago

YXU - ORD

YXUORD

London

Fri 11/9

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

1 stop11h 30m

Chicago O'Hare Intl

Fri 18/9

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

1 stop10h 50m

C$ 729

LondonChicago

YXU - ORD

YXUORD

London

Mon 31/8

3:30 p.m.-7:52 p.m.

1 stop5h 22m

Chicago O'Hare Intl

Sun 6/9

8:40 a.m.-5:45 p.m.

2 stops8h 05m

C$ 751

LondonChicago

YXU - ORD

YXUORD

London

Mon 31/8

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

1 stop5h 50m

Chicago O'Hare Intl

Sun 6/9

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

1 stop4h 55m

C$ 755

LondonChicago

YXU - ORD

YXUORD

London

Thu 1/10

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

1 stop4h 20m

Chicago O'Hare Intl

Mon 5/10

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

1 stop6h 25m

C$ 788

LondonChicago

YXU - ORD

YXUORD

London

Thu 1/10

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

2 stops10h 12m

Chicago O'Hare Intl

Mon 5/10

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

1 stop4h 05m

C$ 792
Quickest round-trip

LondonChicago

YXU - ORD

YXUORD

London

Wed 2/9

10:05 a.m.-1:22 p.m.

1 stop4h 17m

Chicago O'Hare Intl

Tue 8/9

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

1 stop3h 55m

C$ 796

LondonChicago

YXU - ORD

YXUORD

London

Thu 1/10

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

2 stops10h 12m

Chicago O'Hare Intl

Mon 5/10

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

2 stops8h 00m

C$ 797

LondonChicago

YXU - ORD

YXUORD

London

Thu 1/10

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

2 stops10h 12m

Chicago O'Hare Intl

Mon 5/10

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

2 stops8h 00m

C$ 824

LondonChicago

YXU - ORD

YXUORD

London

Tue 15/9

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

1 stop11h 30m

Chicago O'Hare Intl

Thu 17/9

7:20 a.m.-5:20 a.m.

2 stops21h 00m

C$ 830

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 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 60% 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 48m

Direct flights

None
The fastest flight from London, Ontario to Chicago takes 5h 48m
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 48m, 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