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Cheap flights from London, Ontario to Chicago from C$ 404

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 10/9. 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  London-ORD Chicago O'Hare Intl
11h 30m1 stop Calgary
WestJet Logo
5:30 p.m. - 5:20 a.m.ORD  Chicago O'Hare Intl-YXU London
10h 50m1 stop Calgary
C$ 633WestJet
Fri, 4 Sep - Thu, 10 Sep
Multiple Airlines Logo
8:40 p.m. - 4:40 p.m.YXU  London-ORD Chicago O'Hare Intl
21h 00m1 stop Calgary
Multiple Airlines Logo
8:55 p.m. - 5:20 a.m.ORD  Chicago O'Hare Intl-YXU London
31h 25m2 stops Las Vegas Harry Reid Intl Calgary
C$ 737Multiple Airlines
Fri, 4 Sep - Thu, 10 Sep
Air Canada Logo
5:40 a.m. - 9:00 a.m.YXU  London-ORD Chicago O'Hare Intl
4h 20m1 stop Toronto Pearson Intl
Air Canada Logo
3:45 p.m. - 9:40 p.m.ORD  Chicago O'Hare Intl-YXU London
4h 55m1 stop Toronto Pearson Intl
C$ 770Air Canada
Thu, 3 Sep - Sun, 6 Sep
Air Canada Logo
5:40 a.m. - 9:00 a.m.YXU  London-ORD Chicago O'Hare Intl
4h 20m1 stop Toronto Pearson Intl
Air Canada Logo
3:45 p.m. - 9:40 p.m.ORD  Chicago O'Hare Intl-YXU London
4h 55m1 stop Toronto Pearson Intl
C$ 772Air Canada
Fri, 4 Sep - Fri, 11 Sep
Air Canada Logo
3:30 p.m. - 7:52 p.m.YXU  London-ORD Chicago O'Hare Intl
5h 22m1 stop Toronto Pearson Intl
Air Canada Logo
9:55 a.m. - 2:50 p.m.ORD  Chicago O'Hare Intl-YXU London
3h 55m1 stop Toronto Pearson Intl
C$ 777Air Canada
Fri, 28 Aug - Wed, 30 Sep
Air Canada Logo
5:40 a.m. - 9:00 a.m.YXU  London-ORD Chicago O'Hare Intl
4h 20m1 stop Toronto Pearson Intl
Air Canada Logo
2:15 p.m. - 9:40 p.m.ORD  Chicago O'Hare Intl-YXU London
6h 25m1 stop Toronto Pearson Intl
C$ 783Air Canada
Thu, 1 Oct - Mon, 5 Oct
Air Canada Logo
3:30 p.m. - 7:48 p.m.YXU  London-ORD Chicago O'Hare Intl
5h 18m1 stop Toronto Pearson Intl
Air Canada Logo
8:45 a.m. - 5:45 p.m.ORD  Chicago O'Hare Intl-YXU London
8h 00m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
C$ 787Air Canada
Thu, 1 Oct - Mon, 5 Oct
Air Canada Logo
10:05 a.m. - 1:22 p.m.YXU  London-ORD Chicago O'Hare Intl
4h 17m1 stop Toronto Pearson Intl
Air Canada Logo
9:55 a.m. - 2:50 p.m.ORD  Chicago O'Hare Intl-YXU London
3h 55m1 stop Toronto Pearson Intl
C$ 793Air Canada
Wed, 2 Sep - Tue, 8 Sep
Air Canada Logo
3:30 p.m. - 7:52 p.m.YXU  London-ORD Chicago O'Hare Intl
5h 22m1 stop Toronto Pearson Intl
Air Canada Logo
9:55 a.m. - 2:50 p.m.ORD  Chicago O'Hare Intl-YXU London
3h 55m1 stop Toronto Pearson Intl
C$ 811Air Canada
Sun, 30 Aug - Mon, 7 Sep
Air Canada Logo
5:40 a.m. - 2:52 p.m.YXU  London-ORD Chicago O'Hare Intl
10h 12m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
8:45 a.m. - 5:45 p.m.ORD  Chicago O'Hare Intl-YXU London
8h 00m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
C$ 819Air Canada
Thu, 1 Oct - Mon, 5 Oct

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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
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$ 898
United Airlines
2 Sep
YXU10:05 a.m.London
9h 34m
2 stops
ORD6:39 p.m.Chicago O'Hare Intl
8 Sep
ORD5:00 a.m.Chicago O'Hare Intl
8h 50m
2 stops
YXU2:50 p.m.London
C$ 924
United Airlines
19 Sep
YXU3:30 p.m.London
4h 21m
1 stop
ORD6:51 p.m.Chicago O'Hare Intl
26 Sep
ORD2:52 p.m.Chicago O'Hare Intl
5h 48m
1 stop
YXU9:40 p.m.London
C$ 991

Air Canada flights from London, Ontario to Chicago

Our best Air Canada deals on London, Ontario to Chicago flight tickets
Air Canada
3 Sep
YXU5:40 a.m.London
4h 20m
1 stop
ORD9:00 a.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$ 770
Air Canada
4 Sep
YXU5:40 a.m.London
4h 20m
1 stop
ORD9:00 a.m.Chicago O'Hare Intl
11 Sep
ORD3:45 p.m.Chicago O'Hare Intl
4h 55m
1 stop
YXU9:40 p.m.London
C$ 772
Air Canada
28 Aug
YXU3:30 p.m.London
5h 22m
1 stop
ORD7:52 p.m.Chicago O'Hare Intl
30 Sep
ORD9:55 a.m.Chicago O'Hare Intl
3h 55m
1 stop
YXU2:50 p.m.London
C$ 777

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 8 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 London - ORD Chicago O'Hare Intl

YXUORD

London

Fri 4/9

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

1 stop11h 30m

Chicago O'Hare Intl

Thu 10/9

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

1 stop10h 50m

C$ 633

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Fri 4/9

8:40 p.m.-4:40 p.m.

1 stop21h 00m

Chicago O'Hare Intl

Thu 10/9

8:55 p.m.-5:20 a.m.

2 stops31h 25m

C$ 737

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Thu 3/9

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

1 stop4h 20m

Chicago O'Hare Intl

Sun 6/9

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

1 stop4h 55m

C$ 770

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Fri 4/9

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

1 stop4h 20m

Chicago O'Hare Intl

Fri 11/9

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

1 stop4h 55m

C$ 772

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Fri 28/8

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

1 stop5h 22m

Chicago O'Hare Intl

Wed 30/9

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

1 stop3h 55m

C$ 777

LondonChicago

YXU London - ORD Chicago O'Hare Intl

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$ 783

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Thu 1/10

3:30 p.m.-7:48 p.m.

1 stop5h 18m

Chicago O'Hare Intl

Mon 5/10

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

2 stops8h 00m

C$ 787
Quickest round-trip

LondonChicago

YXU London - ORD Chicago O'Hare Intl

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$ 793

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Sun 30/8

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

1 stop5h 22m

Chicago O'Hare Intl

Mon 7/9

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

1 stop3h 55m

C$ 811

LondonChicago

YXU London - ORD Chicago O'Hare Intl

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$ 819

Flights are sorted by cheapest round-trip flights 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 WestJet 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 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

4h 20m

Direct flights

None
The fastest flight from London, Ontario to Chicago takes 4h 20m
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 20m, 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