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Ontario

$309+ 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 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ONT
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheap 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 October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$687
(United Airlines)

One-way from

$309
(Kiwi.com)

Popular in

October

Cheapest in

June

Average price

$611
Provider with most accurate pricing for London-Ontario flight deals.
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Provider most trusted by Cheapflights users for London-Ontario flights.
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From London to Ontario
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One-way flight from London to Ontario
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Highest demand for flights based on searches. 20% potential increase in price ($95 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 29, 2025.

This United Airlines deal was found by Cheapflights users on 10/27. 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.
Thu 12/115:10 amYXU - ONT
2 stops20h 39mUnited Airlines
Thu 12/185:05 amONT - YXU
2 stops13h 16mUnited Airlines
Deal found 10/27$712
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Fri 12/125:10 amYXU - ONT
2 stops19h 39mUnited Airlines
Fri 12/195:05 amONT - YXU
2 stops13h 16mUnited Airlines
Deal found 10/28$794
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Tue 11/49:25 amYXU - ONT
2 stops12h 11mUnited Airlines
Tue 11/115:05 amONT - YXU
2 stops13h 16mUnited Airlines
Deal found 10/28$881
This United Airlines deal was found by Cheapflights users on 10/27. 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 12/219:25 amYXU - ONT
2 stops16h 00mUnited Airlines
Sat 1/35:05 amONT - YXU
2 stops13h 16mUnited Airlines
Deal found 10/27$917
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Wed 11/55:15 amYXU - ONT
2 stops10h 16mUnited Airlines
Thu 11/135:05 amONT - YXU
2 stops9h 00mUnited Airlines
Deal found 10/27$1,116
This Mytrip deal was found by Cheapflights users on 10/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/118:10 pmYXU - ONT
3 stops23h 57mMultiple Airlines
Wed 12/1712:42 amONT - YXU
3 stops26h 52mMultiple Airlines
Deal found 10/26$1,283
This Air Canada deal was found by Cheapflights users on 10/27. 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 12/269:25 amYXU - ONT
2 stops11h 18mAir Canada
Mon 12/295:05 amONT - YXU
2 stops9h 00mAir Canada
Deal found 10/27$2,541
This Air Canada deal was found by Cheapflights users on 10/28. 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 12/235:10 amYXU - ONT
2 stops10h 28mAir Canada
Wed 12/315:05 amONT - YXU
2 stops9h 00mAir Canada
Deal found 10/28$3,013
This Air Canada deal was found by Cheapflights users on 10/27. 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.
Sun 12/215:40 pmYXU - ONT
2 stops21h 58mMultiple Airlines
Sat 1/36:39 pmONT - YXU
3 stops19h 26mMultiple Airlines
Deal found 10/27$3,165

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 October 29, 2025.
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

Sun 2/22

5:15 am-9:59 pm

2 stops19h 44m

Ontario

Thu 2/26

1:45 pm-8:46 am

2 stops40h 01m

$687

LondonOntario

YXU - ONT

YXUONT

London

Thu 12/11

5:10 am-10:49 pm

2 stops20h 39m

Ontario

Thu 12/18

5:05 am-9:21 pm

2 stops13h 16m

$712

LondonOntario

YXU - ONT

YXUONT

London

Fri 12/12

5:10 am-9:49 pm

2 stops19h 39m

Ontario

Fri 12/19

5:05 am-9:21 pm

2 stops13h 16m

$794

LondonOntario

YXU - ONT

YXUONT

London

Sat 12/13

5:10 am-5:37 pm

2 stops15h 27m

Ontario

Sat 12/20

5:05 am-9:21 pm

2 stops13h 16m

$794

LondonOntario

YXU - ONT

YXUONT

London

Sun 12/21

9:25 am-10:25 pm

2 stops16h 00m

Ontario

Sat 1/3

5:05 am-9:21 pm

2 stops13h 16m

$880

LondonOntario

YXU - ONT

YXUONT

London

Mon 12/29

9:25 am-10:25 pm

2 stops16h 00m

Ontario

Sat 1/3

5:05 am-9:21 pm

2 stops13h 16m

$881

LondonOntario

YXU - ONT

YXUONT

London

Fri 12/12

7:30 am-9:17 pm

2 stops40h 47m

$309

LondonOntario

YXU - ONT

YXUONT

London

Fri 12/26

9:25 am-10:25 pm

2 stops16h 00m

$544

LondonOntario

YXU - ONT

YXUONT

London

Fri 12/26

7:30 am-10:28 pm

3 stops41h 58m

$608

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on London, Ontario-Ontario flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 January is currently the most expensive (average of $212). 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 19h 44m. 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 January is currently the most expensive (average of $212). 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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