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Cheap flights from London, Ontario to Chicago from C$ 425

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 1/7. 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
8:40 p.m. - 4:40 p.m.
YXU
-
ORD
21h 00m
1 stop
WestJet Logo
5:30 p.m. - 5:20 a.m.
ORD
-
YXU
10h 50m
1 stop
C$ 665WestJet
Thu, 3 Sep - Sun, 6 Sep
Air Canada Logo
9:45 a.m. - 12:56 p.m.
YXU
-
ORD
4h 11m
1 stop
Air Canada Logo
9:50 a.m. - 3:06 p.m.
ORD
-
YXU
4h 16m
1 stop
C$ 753Air Canada
Sat, 31 Oct - Tue, 3 Nov
Air Canada Logo
5:45 a.m. - 9:00 a.m.
YXU
-
ORD
4h 15m
1 stop
Air Canada Logo
8:00 a.m. - 3:06 p.m.
ORD
-
YXU
6h 06m
1 stop
C$ 754Air Canada
Sun, 6 Dec - Tue, 8 Dec
Air Canada Logo
5:45 a.m. - 9:00 a.m.
YXU
-
ORD
4h 15m
1 stop
Air Canada Logo
8:00 a.m. - 3:06 p.m.
ORD
-
YXU
6h 06m
1 stop
C$ 755Air Canada
Sun, 6 Dec - Tue, 8 Dec
Air Canada Logo
5:45 a.m. - 2:55 p.m.
YXU
-
ORD
10h 10m
2 stops
Air Canada Logo
8:00 a.m. - 3:06 p.m.
ORD
-
YXU
6h 06m
1 stop
C$ 758Air Canada
Sat, 31 Oct - Tue, 3 Nov
Air Canada Logo
10:05 a.m. - 2:55 p.m.
YXU
-
ORD
5h 50m
1 stop
Air Canada Logo
9:50 a.m. - 3:06 p.m.
ORD
-
YXU
4h 16m
1 stop
C$ 762Air Canada
Sat, 10 Oct - Fri, 27 Nov
Air Canada Logo
10:05 a.m. - 1:22 p.m.
YXU
-
ORD
4h 17m
1 stop
Air Canada Logo
3:50 p.m. - 8:32 p.m.
ORD
-
YXU
3h 42m
1 stop
C$ 789Air Canada
Wed, 1 Jul - Wed, 8 Jul
Air Canada Logo
10:05 a.m. - 1:22 p.m.
YXU
-
ORD
4h 17m
1 stop
Air Canada Logo
3:50 p.m. - 8:32 p.m.
ORD
-
YXU
3h 42m
1 stop
C$ 796Air Canada
Wed, 1 Jul - Wed, 8 Jul
Air Canada Logo
10:05 a.m. - 1:22 p.m.
YXU
-
ORD
4h 17m
1 stop
Air Canada Logo
3:45 p.m. - 8:32 p.m.
ORD
-
YXU
3h 47m
1 stop
C$ 798Air Canada
Fri, 3 Jul - Mon, 6 Jul
United Airlines Logo
3:30 p.m. - 7:48 p.m.
YXU
-
ORD
5h 18m
1 stop
United Airlines Logo
10:45 a.m. - 9:46 p.m.
ORD
-
YXU
10h 01m
2 stops
C$ 849United Airlines
Sat, 10 Oct - Fri, 27 Nov

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Air Canada flights from London, Ontario to Chicago O'Hare Intl Airport

Our best Air Canada deals on London, Ontario to Chicago O'Hare Intl Airport flight tickets
Air Canada
31 Oct
YXU9:45 a.m.London
4h 11m
1 stop
ORD12:56 p.m.Chicago O'Hare Intl
3 Nov
ORD9:50 a.m.Chicago O'Hare Intl
4h 16m
1 stop
YXU3:06 p.m.London
C$ 748
Air Canada
31 Oct
YXU5:45 a.m.London
10h 10m
2 stops
ORD2:55 p.m.Chicago O'Hare Intl
3 Nov
ORD8:00 a.m.Chicago O'Hare Intl
6h 06m
1 stop
YXU3:06 p.m.London
C$ 753
Air Canada
6 Dec
YXU5:45 a.m.London
4h 15m
1 stop
ORD9:00 a.m.Chicago O'Hare Intl
8 Dec
ORD8:00 a.m.Chicago O'Hare Intl
6h 06m
1 stop
YXU3:06 p.m.London
C$ 754

United Airlines flights from London, Ontario to Chicago O'Hare Intl Airport

Our best United Airlines deals on London, Ontario to Chicago O'Hare Intl Airport flight tickets
United Airlines
10 Oct
YXU3:30 p.m.London
5h 18m
1 stop
ORD7:48 p.m.Chicago O'Hare Intl
27 Nov
ORD10:45 a.m.Chicago O'Hare Intl
10h 01m
2 stops
YXU9:46 p.m.London
C$ 849
United Airlines
6 Dec
YXU3:25 p.m.London
5h 10m
1 stop
ORD7:35 p.m.Chicago O'Hare Intl
8 Dec
ORD5:00 a.m.Chicago O'Hare Intl
9h 06m
2 stops
YXU3:06 p.m.London
C$ 850
United Airlines
6 Dec
YXU3:25 p.m.London
5h 10m
1 stop
ORD7:35 p.m.Chicago O'Hare Intl
8 Dec
ORD5:00 a.m.Chicago O'Hare Intl
9h 06m
2 stops
YXU3:06 p.m.London
C$ 851

momondo Fare Finder

 
Customize your flight search to find flights from London, Ontario to Chicago O'Hare Intl Airport 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 19 June 2026.
Use the filters below to find and compare flights from London, Ontario to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonChicago

YXU - ORD

YXUORD

London

Thu 3/9

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

1 stop21h 00m

Chicago O'Hare Intl

Sun 6/9

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

1 stop10h 50m

C$ 665

LondonChicago

YXU - ORD

YXUORD

London

Sat 31/10

9:45 a.m.-12:56 p.m.

1 stop4h 11m

Chicago O'Hare Intl

Tue 3/11

9:50 a.m.-3:06 p.m.

1 stop4h 16m

C$ 753

LondonChicago

YXU - ORD

YXUORD

London

Sun 6/12

5:45 a.m.-9:00 a.m.

1 stop4h 15m

Chicago O'Hare Intl

Tue 8/12

8:00 a.m.-3:06 p.m.

1 stop6h 06m

C$ 754

LondonChicago

YXU - ORD

YXUORD

London

Sun 6/12

5:45 a.m.-9:00 a.m.

1 stop4h 15m

Chicago O'Hare Intl

Tue 8/12

8:00 a.m.-3:06 p.m.

1 stop6h 06m

C$ 755

LondonChicago

YXU - ORD

YXUORD

London

Sat 31/10

5:45 a.m.-2:55 p.m.

2 stops10h 10m

Chicago O'Hare Intl

Tue 3/11

8:00 a.m.-3:06 p.m.

1 stop6h 06m

C$ 758

LondonChicago

YXU - ORD

YXUORD

London

Sat 10/10

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

1 stop5h 50m

Chicago O'Hare Intl

Fri 27/11

9:50 a.m.-3:06 p.m.

1 stop4h 16m

C$ 762
Quickest round-trip

LondonChicago

YXU - ORD

YXUORD

London

Wed 1/7

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

1 stop4h 17m

Chicago O'Hare Intl

Wed 8/7

3:50 p.m.-8:32 p.m.

1 stop3h 42m

C$ 789

LondonChicago

YXU - ORD

YXUORD

London

Wed 1/7

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

1 stop4h 17m

Chicago O'Hare Intl

Wed 8/7

3:50 p.m.-8:32 p.m.

1 stop3h 42m

C$ 796

LondonChicago

YXU - ORD

YXUORD

London

Fri 3/7

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

1 stop4h 17m

Chicago O'Hare Intl

Mon 6/7

3:45 p.m.-8:32 p.m.

1 stop3h 47m

C$ 798

LondonChicago

YXU - ORD

YXUORD

London

Sat 10/10

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

1 stop5h 18m

Chicago O'Hare Intl

Fri 27/11

10:45 a.m.-9:46 p.m.

2 stops10h 01m

C$ 849

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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 O'Hare Intl Airport

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 O'Hare Intl?

Air Canada and United Airlines are the most popular carriers operating from London to Chicago O'Hare Intl

Which airlines fly to Chicago O'Hare Intl Airport?

Air Canada, United Airlines and American Airlines are the top three most popular airlines that fly to Chicago O'Hare Intl Airport from London, Ontario according to our data. Air Canada is the first choice among our users, with 56% of people opting to fly with this airline when travelling to Chicago O'Hare Intl Airport. Keep in mind that there are 5 different airlines that fly to Chicago O'Hare Intl Airport on a routine basis, so you have a few additional options to choose from.

When to book flights from London, Ontario to Chicago O'Hare Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from London, Ontario to Chicago O'Hare Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap London, Ontario to Chicago O'Hare Intl Airport (YXU to ORD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London, Ontario to Chicago O'Hare Intl Airport

Fastest flight time

4h 21m

Direct flights

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

Frequently asked questions about flying from London, Ontario to Chicago O'Hare Intl Airport

  • How far is London to Chicago O'Hare Intl by plane?

    London and Chicago O'Hare Intl are 557.8 km apart from one another. 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 O'Hare Intl Airport?

    Prices for flights from London Airport to Chicago O'Hare Intl Airport refresh daily.

  • How old do you have to be to fly from London Airport to Chicago O'Hare Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Airport to Chicago O'Hare Intl Airport.

  • What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

    The required travel and health documents for your Chicago O'Hare Intl Airport 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 O'Hare Intl Airport. 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
Schaumburg
Glenview
Waukegan
Rosemont
Des Plaines
Merrillville
Kenosha
Northbrook
Tinley Park
Evanston
Downers Grove
Great Lakes
Hammond
Harvey
Naperville
Munster
Harvard
Hoffman Estates
Elmhurst
DeKalb

Why use momondo?

Why should I use momondo to find a flight deal from London to Chicago?

Finding the right flight to Chicago from London is quick and easy when you have a range of options in front of you, from reputable agents and recognizable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Chicago quick and easy, saving you time and money.

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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