$248+ Cheap flights from London, ON (YXU) to Ontario (ONT)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ONT
Oct 10 — Oct 171
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from London to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from London to Ontario
Cheapest
Best
Last-minute
One-way
Cheapest flights from London to OntarioExplore 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 September 10, 2026.
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 September 10, 2026.
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Sat 12/55:30 am -
2 stops17h 59m
Tue 12/86:40 pm -
2 stops24h 07m
Deal found 9/7![United Airlines logo]()
$612
This Air Canada deal was found by Cheapflights users on 9/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:40 am -
2 stops10h 06m
Mon 10/55:00 am -
2 stops11h 40m
Deal found 9/9![Air Canada logo]()
$613
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/16:20 pm -
2 stops31h 31m
Mon 10/56:32 pm -
2 stops24h 08m
Deal found 9/10![United Airlines logo]()
$668
This Booking.com deal was found by Cheapflights users on 9/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:20 pm -
2 stops18h 58m
Thu 10/296:00 am -
2 stops10h 52m
Deal found 9/7![Air Canada logo]()
$796
Best flights from London to OntarioDiscover carefully curated flight deals from London to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
Discover carefully curated flight deals from London to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Sat 12/55:30 am -
2 stops17h 59m
Tue 12/86:40 pm -
2 stops24h 07m
Deal found 9/7![United Airlines logo]()
$612
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/16:20 pm -
2 stops31h 31m
Mon 10/56:32 pm -
2 stops24h 08m
Deal found 9/10![United Airlines logo]()
$668
This United Airlines deal was found by Cheapflights users on 9/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/115:30 am -
2 stops10h 03m
Sat 2/206:30 am -
2 stops12h 17m
Deal found 9/8![United Airlines logo]()
$750
Last-minute flights from London to OntarioDiscover last-minute flight deals from London to Ontario. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from London to Ontario. Data last updated September 10, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 9/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:40 am -
2 stops10h 06m
Mon 10/55:00 am -
2 stops11h 40m
Deal found 9/9![Air Canada logo]()
$613
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/16:20 pm -
2 stops31h 31m
Mon 10/56:32 pm -
2 stops24h 08m
Deal found 9/10![United Airlines logo]()
$668
This Booking.com deal was found by Cheapflights users on 9/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:20 pm -
2 stops18h 58m
Thu 10/296:00 am -
2 stops10h 52m
Deal found 9/7![Air Canada logo]()
$796
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Thu 10/223:30 pm -
2 stops23h 48m
Thu 10/296:59 am -
2 stops9h 53m
Deal found 9/7![United Airlines logo]()
$975
One-way flights from London to OntarioSearch for one-way flight options from London to Ontario. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
Search for one-way flight options from London to Ontario. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:10 am -
3 stops32h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$248
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:10 am -
3 stops29h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$265
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/256:10 am -
3 stops40h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$299
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Thu 10/223:30 pm -
2 stops23h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![United Airlines logo]()
$618
This Air Canada deal was found by Cheapflights users on 9/6. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/255:30 am -
2 stops12h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Air Canada logo]()
$774
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 September 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $612 (United Airlines) |
One-way from | $248 (Kiwi.com) |
Popular in | March |
Cheapest in | November |
Average price | $862 |
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 7,457,451 searches. Data last updated September 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
Cheapest round-trip
LondonOntario
YXU London - ONT Ontario
YXUONT
London
Sat 10/24
6:10 am-11:16 am
3 stops32h 06m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$248
LondonOntario
YXU London - ONT Ontario
YXUONT
London
Tue 10/6
6:10 am-9:09 am
3 stops29h 59m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$265
LondonOntario
YXU London - ONT Ontario
YXUONT
London
Sun 10/25
6:10 am-7:40 pm
3 stops40h 30m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$299
LondonOntario
YXU London - ONT Ontario
YXUONT
London
Sat 12/5
5:30 am-8:29 pm
2 stops17h 59m
Ontario
Tue 12/8
6:40 pm-9:47 pm
2 stops24h 07m
$612
LondonOntario
YXU London - ONT Ontario
YXUONT
London
Thu 10/22
3:30 pm-12:18 pm
2 stops23h 48m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$618
LondonOntario
YXU London - ONT Ontario
YXUONT
London
Thu 10/1
6:20 pm-10:51 pm
2 stops31h 31m
Ontario
Mon 10/5
6:32 pm-9:40 pm
2 stops24h 08m
$668
LondonOntario
YXU London - ONT Ontario
YXUONT
London
Thu 2/11
5:30 am-12:33 pm
2 stops10h 03m
Ontario
Sat 2/20
6:30 am-9:47 pm
2 stops12h 17m
$750
Quickest round-trip
LondonOntario
YXU London - ONT Ontario
YXUONT
London
Fri 12/25
5:30 am-3:19 pm
2 stops12h 49m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$774
Sorted by cheapest first
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
YXU-ONT
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Ontario flight routes
Other flight options
Popular flights