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Ontario

$343+ 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 3/13. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ONT
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
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 January 29, 2026.

This United Airlines deal was found by Cheapflights users on 1/26. 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.
Tue 3/109:25 am
YXU
-
ONT
2 stops15h 53m
United Airlines
Thu 3/1211:59 pm
ONT
-
YXU
2 stops18h 22m
United Airlines
Deal found 1/26$637
This United Airlines deal was found by Cheapflights users on 1/28. 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.
Sat 3/149:40 am
YXU
-
ONT
2 stops15h 38m
United Airlines
Sat 3/2111:59 pm
ONT
-
YXU
2 stops14h 06m
United Airlines
Deal found 1/28$699
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Sun 2/15:10 am
YXU
-
ONT
2 stops20h 43m
United Airlines
Wed 2/46:00 am
ONT
-
YXU
2 stops12h 20m
United Airlines
Deal found 1/27$947
This Air Canada deal was found by Cheapflights users on 1/28. 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.
Wed 2/255:10 am
YXU
-
ONT
2 stops10h 33m
Air Canada
Sun 3/16:09 am
ONT
-
YXU
2 stops12h 12m
Air Canada
Deal found 1/28$957
This United Airlines deal was found by Cheapflights users on 1/27. 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 3/139:25 am
YXU
-
ONT
2 stops15h 53m
United Airlines
Fri 3/2011:59 pm
ONT
-
YXU
2 stops29h 47m
United Airlines
Deal found 1/27$968
This Air Canada deal was found by Cheapflights users on 1/27. 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.
Fri 3/135:10 am
YXU
-
ONT
2 stops10h 38m
Air Canada
Thu 3/195:15 am
ONT
-
YXU
2 stops8h 50m
Air Canada
Deal found 1/27$1,160
This Air Canada deal was found by Cheapflights users on 1/27. 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 2/195:10 am
YXU
-
ONT
2 stops10h 33m
Air Canada
Sat 2/285:00 am
ONT
-
YXU
2 stops9h 05m
Air Canada
Deal found 1/27$1,547

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$637
(United Airlines)

One-way from

$343
(United Airlines)

Popular in

December

Cheapest in

June

Average price

$312
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. 17% potential increase in price ($74 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 January 29, 2026.
Use the filters below to find and compare flights from London to Ontario that are best for you.

Fly from

London

Fly to

Ontario

Route

Depart

Return

Price

LondonOntario

YXU - ONT

YXUONT

London

Tue 3/10

9:25 am-10:18 pm

2 stops15h 53m

Ontario

Thu 3/12

11:59 pm-9:21 pm

2 stops18h 22m

$637

LondonOntario

YXU - ONT

YXUONT

London

Sat 3/14

9:40 am-10:18 pm

2 stops15h 38m

Ontario

Sat 3/21

11:59 pm-5:05 pm

2 stops14h 06m

$699

LondonOntario

YXU - ONT

YXUONT

London

Wed 2/25

5:10 am-12:43 pm

2 stops10h 33m

Ontario

Sun 3/1

6:09 am-9:21 pm

2 stops12h 12m

$957

LondonOntario

YXU - ONT

YXUONT

London

Fri 3/13

9:25 am-10:18 pm

2 stops15h 53m

Ontario

Fri 3/20

11:59 pm-8:46 am

2 stops29h 47m

$968

LondonOntario

YXU - ONT

YXUONT

London

Fri 3/13

5:10 am-12:48 pm

2 stops10h 38m

Ontario

Thu 3/19

5:15 am-5:05 pm

2 stops8h 50m

$1,160

LondonOntario

YXU - ONT

YXUONT

London

Fri 3/13

5:10 am-12:48 pm

2 stops10h 38m

Ontario

Sat 3/21

5:15 am-5:05 pm

2 stops8h 50m

$1,550

LondonOntario

YXU - ONT

YXUONT

London

Fri 3/13

5:10 am-10:36 pm

2 stops20h 26m

$343

LondonOntario

YXU - ONT

YXUONT

London

Fri 3/13

7:30 am-6:36 pm

3 stops38h 06m

$369

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

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 January.
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.

Cheapflights Insights

Everything you need to know about your flight from London to Ontario

What is the cheapest month to book a flight from London, Ontario to Ontario?

Currently, August is the cheapest month in which you can book a flight from London, Ontario to Ontario (average of $80). Flying from London, Ontario to Ontario in February is currently the most expensive (average of $209). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 United Airlines fly from London, Ontario to Ontario in about 15h 53m. The time it takes to get you to your destination can typically vary by up to . The distance from London, Ontario to Ontario is about 2045 mi.

  • 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.

  • What is the cheapest month to book a flight from London, Ontario to Ontario?

    Currently, August is the cheapest month in which you can book a flight from London, Ontario to Ontario (average of $80). Flying from London, Ontario to Ontario in February is currently the most expensive (average of $209). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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