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Ontario

$233+ 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 4/19. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ONT
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
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 March 10, 2026.

This Delta deal was found by Cheapflights users on 3/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/228:00 am
YXU
-
ONT
2 stops17h 37m
Delta
Wed 4/2911:53 am
ONT
-
YXU
2 stops14h 27m
Delta
Deal found 3/8$576
This United Airlines deal was found by Cheapflights users on 3/5. 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 4/185:10 am
YXU
-
ONT
3 stops15h 37m
United Airlines
Sat 4/255:10 am
ONT
-
YXU
2 stops13h 09m
United Airlines
Deal found 3/5$583
This Ucuzabilet deal was found by Cheapflights users on 3/8. 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 Ucuzabilet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/225:10 am
YXU
-
ONT
3 stops15h 37m
Air Canada
Wed 4/295:10 am
ONT
-
YXU
2 stops13h 09m
Air Canada
Deal found 3/8$592
This United Airlines deal was found by Cheapflights users on 3/6. 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 6/19:30 am
YXU
-
ONT
2 stops16h 16m
United Airlines
Wed 6/36:00 am
ONT
-
YXU
2 stops26h 43m
United Airlines
Deal found 3/6$605
This United Airlines deal was found by Cheapflights users on 3/7. 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 4/219:25 am
YXU
-
ONT
2 stops11h 37m
United Airlines
Tue 4/285:10 am
ONT
-
YXU
2 stops13h 09m
United Airlines
Deal found 3/7$613
This United Airlines deal was found by Cheapflights users on 3/9. 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.
Wed 4/225:10 am
YXU
-
ONT
3 stops15h 37m
United Airlines
Wed 4/295:10 am
ONT
-
YXU
2 stops13h 09m
United Airlines
Deal found 3/9$654
This United Airlines deal was found by Cheapflights users on 3/9. 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 4/249:25 am
YXU
-
ONT
2 stops16h 06m
United Airlines
Fri 5/15:00 am
ONT
-
YXU
2 stops24h 53m
United Airlines
Deal found 3/9$661
This United Airlines deal was found by Cheapflights users on 3/6. 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 4/209:25 am
YXU
-
ONT
2 stops16h 06m
United Airlines
Mon 4/275:10 am
ONT
-
YXU
2 stops24h 34m
United Airlines
Deal found 3/6$686

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 March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$576
(Delta)

One-way from

$233
(Kiwi.com)
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
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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 March 10, 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

Sat 4/18

5:10 am-8:36 pm

2 stops18h 26m

Ontario

Sat 4/25

5:10 am-9:19 pm

2 stops13h 09m

$583

LondonOntario

YXU - ONT

YXUONT

London

Wed 4/22

5:10 am-5:47 pm

3 stops15h 37m

Ontario

Wed 4/29

5:10 am-9:19 pm

2 stops13h 09m

$592

LondonOntario

YXU - ONT

YXUONT

London

Mon 6/1

9:30 am-10:46 pm

2 stops16h 16m

Ontario

Wed 6/3

6:00 am-11:43 am

2 stops26h 43m

$605
Quickest round-trip

LondonOntario

YXU - ONT

YXUONT

London

Tue 4/21

9:25 am-6:02 pm

2 stops11h 37m

Ontario

Tue 4/28

5:10 am-9:19 pm

2 stops13h 09m

$613

LondonOntario

YXU - ONT

YXUONT

London

Wed 4/22

9:25 am-10:45 pm

2 stops16h 20m

Ontario

Wed 4/29

5:10 am-9:19 pm

2 stops13h 09m

$616

LondonOntario

YXU - ONT

YXUONT

London

Fri 4/24

9:25 am-10:31 pm

2 stops16h 06m

Ontario

Fri 5/1

5:00 am-8:53 am

2 stops24h 53m

$661

LondonOntario

YXU - ONT

YXUONT

London

Mon 4/20

9:25 am-10:31 pm

2 stops16h 06m

Ontario

Mon 4/27

5:10 am-8:44 am

2 stops24h 34m

$686
Cheapest one-way

LondonOntario

YXU - ONT

YXUONT

London

Sun 4/19

8:10 pm-10:44 am

2 stops41h 34m

$233

LondonOntario

YXU - ONT

YXUONT

London

Wed 4/22

8:00 am-7:31 am

3 stops26h 31m

$247

LondonOntario

YXU - ONT

YXUONT

London

Tue 4/7

8:10 pm-9:00 pm

3 stops27h 50m

$297

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/5

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 March.
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, July is the cheapest month in which you can book a flight from London, Ontario to Ontario (average of $96). Flying from London, Ontario to Ontario in February is currently the most expensive (average of $208). 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 and Air Canada fly from London, Ontario to Ontario in about 15h 37m. The time it takes to get you to your destination can typically vary by up to 2h 49m. 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.

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

    Currently, July is the cheapest month in which you can book a flight from London, Ontario to Ontario (average of $96). Flying from London, Ontario to Ontario in February is currently the most expensive (average of $208). 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.

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