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Ontario

$278+ Cheap flights from London, ON (YXU) to Ontario (ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ONT
May 29 — Jun 51
Fri 5/29
Fri 6/5
1 adult, Economy
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Cheap flight deals from London to Ontario

Cheapest flights from London to Ontario
Explore the most affordable flight options available from London to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2026.

This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/95:10 am
YXU
-
ONT
3 stops15h 42m
United Airlines
Wed 5/137:00 am
ONT
-
YXU
2 stops11h 38m
United Airlines
Deal found 4/25$567
This Mytrip deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/135:10 am
YXU
-
ONT
2 stops10h 37m
Air Canada
Sat 6/205:00 am
ONT
-
YXU
2 stops9h 32m
Air Canada
Deal found 4/29$575
This Air Canada deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/275:40 am
YXU
-
ONT
2 stops20h 18m
Air Canada
Sun 8/305:00 am
ONT
-
YXU
2 stops9h 45m
Air Canada
Deal found 4/24$586
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/275:40 am
YXU
-
ONT
2 stops15h 39m
United Airlines
Sun 8/305:00 am
ONT
-
YXU
2 stops9h 45m
United Airlines
Deal found 4/28$587
This Air Canada deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1510:05 am
YXU
-
ONT
2 stops11h 06m
Air Canada
Sun 9/275:00 am
ONT
-
YXU
2 stops9h 43m
Air Canada
Deal found 4/28$595
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/85:10 am
YXU
-
ONT
2 stops20h 36m
United Airlines
Mon 6/156:30 am
ONT
-
YXU
2 stops23h 48m
United Airlines
Deal found 4/25$780
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/112:20 pm
YXU
-
ONT
2 stops12h 38m
United Airlines
Mon 5/45:00 am
ONT
-
YXU
2 stops9h 33m
United Airlines
Deal found 4/26$866
This United Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/99:30 am
YXU
-
ONT
2 stops16h 16m
United Airlines
Tue 6/166:30 am
ONT
-
YXU
2 stops23h 13m
United Airlines
Deal found 4/24$899
This Air Canada deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1312:20 pm
YXU
-
ONT
2 stops11h 16m
Air Canada
Wed 5/205:00 am
ONT
-
YXU
2 stops9h 33m
Air Canada
Deal found 4/29$910
This Kissandfly.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/95:10 am
YXU
-
ONT
3 stops15h 42m
Lufthansa
Wed 5/135:00 am
ONT
-
YXU
3 stops13h 38m
Lufthansa
Deal found 4/25$926

Find flight deals from London to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from London (YXU) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$567
(United Airlines)

One-way from

$278
(Kiwi.com)

Popular in

February

Cheapest in

July

Average price

$537
Provider with most accurate pricing for London-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for London-Ontario flights.
Search Deals
From London to Ontario
Search Deals
One-way flight from London to Ontario
Search Deals
Highest demand for flights based on searches. 33% potential increase in price ($276 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 11% potential price decrease ($57 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to Ontario 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, Cheapflights users made 2,558,603 searches. Data last updated April 29, 2026.
Use the filters below to find and compare flights from London to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonOntario

YXU - ONT

YXUONT

London

Thu 8/27

5:40 am-6:19 pm

2 stops15h 39m

Ontario

Sun 8/30

5:00 am-5:45 pm

2 stops9h 45m

$587

LondonOntario

YXU - ONT

YXUONT

London

Thu 8/27

5:40 am-6:11 pm

2 stops15h 31m

Ontario

Sun 8/30

7:13 pm-9:20 am

2 stops11h 07m

$587
Quickest round-trip

LondonOntario

YXU - ONT

YXUONT

London

Tue 9/15

10:05 am-6:11 pm

2 stops11h 06m

Ontario

Sun 9/27

5:00 am-5:43 pm

2 stops9h 43m

$595

LondonOntario

YXU - ONT

YXUONT

London

Mon 6/8

5:10 am-10:46 pm

2 stops20h 36m

Ontario

Mon 6/15

6:30 am-9:18 am

2 stops23h 48m

$780

LondonOntario

YXU - ONT

YXUONT

London

Tue 6/9

9:30 am-10:46 pm

2 stops16h 16m

Ontario

Tue 6/16

6:30 am-8:43 am

2 stops23h 13m

$899

LondonOntario

YXU - ONT

YXUONT

London

Sat 5/9

5:10 am-5:52 pm

3 stops15h 42m

Ontario

Wed 5/13

5:00 am-9:38 pm

3 stops13h 38m

$926

LondonOntario

YXU - ONT

YXUONT

London

Tue 5/19

12:20 pm-8:36 pm

2 stops11h 16m

Ontario

Fri 5/29

5:00 am-5:33 pm

2 stops9h 33m

$994

LondonOntario

YXU - ONT

YXUONT

London

Fri 6/12

5:10 am-9:55 pm

2 stops19h 45m

Ontario

Fri 6/19

6:30 am-9:37 pm

2 stops12h 07m

$1,011

LondonOntario

YXU - ONT

YXUONT

London

Fri 6/12

2:40 pm-10:41 pm

3 stops35h 01m

Ontario

Fri 6/19

6:20 am-5:20 am

3 stops20h 00m

$1,048
Cheapest one-way

LondonOntario

YXU - ONT

YXUONT

London

Wed 6/10

6:10 am-11:13 am

2 stops32h 03m

$278

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/26

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

Compare providers for flights from London to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from London to Ontario in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London, Ontario-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London, Ontario-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London, Ontario-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London, Ontario-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London, Ontario-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from London to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from London with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from London to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London, Ontario to Ontario?

    Airlines like Air Canada and United Airlines fly from London, Ontario to Ontario in about 15h 39m. The time it takes to get you to your destination can typically vary by up to 4h 39m. The distance from London, Ontario to Ontario is about 2045 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from London to Ontario that include hotel bookings?

    Yes. In addition to deals on London to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from London to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Ontario.

  • Can I find deals for business class flights from London to Ontario?

    Yes. Cheapflights offers flight deals from London to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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