HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$322+ 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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ONT
Aug 28 — Sep 41
Fri 8/28
Fri 9/4
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 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 July 29, 2026.

This United Airlines deal was found by Cheapflights users on 7/27. 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 9/113:30 pm
YXU
-
ONT
2 stops29h 41m
United Airlines
Tue 9/159:01 am
ONT
-
YXU
2 stops21h 19m
United Airlines
Deal found 7/27$553
This United Airlines deal was found by Cheapflights users on 7/28. 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 9/245:40 am
YXU
-
ONT
2 stops19h 19m
United Airlines
Mon 9/286:06 am
ONT
-
YXU
2 stops12h 34m
United Airlines
Deal found 7/28$666
This Mytrip deal was found by Cheapflights users on 7/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/218:40 pm
YXU
-
ONT
2 stops21h 13m
WestJet
Thu 8/276:20 am
ONT
-
YXU
2 stops20h 00m
WestJet
Deal found 7/25$683
This United Airlines deal was found by Cheapflights users on 7/25. 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.
Fri 10/96:20 pm
YXU
-
ONT
2 stops31h 31m
United Airlines
Sun 10/185:00 am
ONT
-
YXU
2 stops9h 45m
United Airlines
Deal found 7/25$705
This United Airlines deal was found by Cheapflights users on 7/27. 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 9/105:40 am
YXU
-
ONT
2 stops15h 31m
United Airlines
Thu 9/175:00 am
ONT
-
YXU
2 stops9h 43m
United Airlines
Deal found 7/27$715
This Air Canada deal was found by Cheapflights users on 7/26. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/265:40 am
YXU
-
ONT
2 stops10h 06m
Air Canada
Sat 10/35:00 am
ONT
-
YXU
2 stops9h 45m
Air Canada
Deal found 7/26$730
This United Airlines deal was found by Cheapflights users on 7/25. 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.
Tue 9/85:40 am
YXU
-
ONT
2 stops11h 21m
United Airlines
Tue 9/159:01 am
ONT
-
YXU
2 stops21h 19m
United Airlines
Deal found 7/25$735

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 July 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$553
(United Airlines)

One-way from

$322
(United Airlines)

Popular in

March

Cheapest in

November
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. 25% potential increase in price ($235 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($43 potential savings vs. average RT price).
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 July 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

Fri 9/11

3:30 pm-6:11 pm

2 stops29h 41m

Ontario

Tue 9/15

9:01 am-9:20 am

2 stops21h 19m

$553

LondonOntario

YXU - ONT

YXUONT

London

Thu 9/24

5:40 am-9:59 pm

2 stops19h 19m

Ontario

Mon 9/28

6:06 am-9:40 pm

2 stops12h 34m

$666

LondonOntario

YXU - ONT

YXUONT

London

Fri 8/21

8:40 pm-2:53 pm

2 stops21h 13m

Ontario

Thu 8/27

6:20 am-5:20 am

2 stops20h 00m

$683

LondonOntario

YXU - ONT

YXUONT

London

Fri 10/9

6:20 pm-10:51 pm

2 stops31h 31m

Ontario

Sun 10/18

5:00 am-5:45 pm

2 stops9h 45m

$705
Quickest round-trip

LondonOntario

YXU - ONT

YXUONT

London

Thu 9/10

5:40 am-6:11 pm

2 stops15h 31m

Ontario

Thu 9/17

5:00 am-5:43 pm

2 stops9h 43m

$715

LondonOntario

YXU - ONT

YXUONT

London

Tue 9/8

5:40 am-2:01 pm

2 stops11h 21m

Ontario

Tue 9/15

9:01 am-9:20 am

2 stops21h 19m

$735
Cheapest one-way
Quickest one-way

LondonOntario

YXU - ONT

YXUONT

London

Tue 11/3

5:30 am-6:01 pm

2 stops15h 31m

$322

LondonOntario

YXU - ONT

YXUONT

London

Tue 12/15

5:30 am-11:06 pm

2 stops20h 36m

$322

LondonOntario

YXU - ONT

YXUONT

London

Tue 9/8

6:10 am-10:30 am

3 stops31h 20m

$340

LondonOntario

YXU - ONT

YXUONT

London

Tue 9/8

5:40 am-8:01 pm

2 stops17h 21m

$353

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Showing 1-10 of 12 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 July.
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 United Airlines fly from London, Ontario to Ontario in about 29h 41m. 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.

See more FAQs

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights