HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$183+ 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 10/25. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ONT
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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

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 11, 2025.

Round-trip from

$612
(United Airlines)

One-way from

$183
(Kiwi.com)

Popular in

December

Cheapest in

June

Average price

$410
From London to Ontario
Search Deals
One-way flight from London to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($25 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

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 September 11, 2025.

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.
Fri 10/33:40 pmYXU - ONT
2 stops23h 33mUnited Airlines
Tue 10/79:36 amONT - YXU
2 stops20h 41mUnited Airlines
Deal found 9/10$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.
Wed 10/86:15 amYXU - ONT
2 stops17h 09mUnited Airlines
Wed 10/156:27 pmONT - YXU
2 stops35h 50mUnited Airlines
Deal found 9/10$648
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.
Fri 10/243:40 pmYXU - ONT
2 stops34h 12mUnited Airlines
Fri 10/311:40 pmONT - YXU
2 stops41h 06mUnited Airlines
Deal found 9/10$662
This United Airlines deal was found by Cheapflights users on 9/11. 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 12/215:45 amYXU - ONT
2 stops19h 40mUnited Airlines
Sat 1/311:59 pmONT - YXU
2 stops14h 06mUnited Airlines
Deal found 9/11$724
This Air Canada deal was found by Cheapflights users on 9/11. 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 9/306:10 amYXU - ONT
2 stops9h 41mAir Canada
Thu 10/305:05 amONT - YXU
2 stops9h 01mAir Canada
Deal found 9/11$845
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/86:00 amYXU - ONT
3 stops19h 41mWestJet
Wed 10/157:35 amONT - YXU
3 stops32h 32mWestJet
Deal found 9/10$890
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/33:40 pmYXU - ONT
3 stops28h 20mMultiple Airlines
Tue 10/77:35 amONT - YXU
3 stops22h 42mMultiple Airlines
Deal found 9/10$1,074

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 September 11, 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

Fri 10/3

3:40 pm-12:13 pm

2 stops23h 33m

Ontario

Tue 10/7

9:36 am-9:17 am

2 stops20h 41m

$612

LondonOntario

YXU - ONT

YXUONT

London

Wed 10/8

6:15 am-8:24 pm

2 stops17h 09m

Ontario

Wed 10/15

6:27 pm-9:17 am

2 stops35h 50m

$648

LondonOntario

YXU - ONT

YXUONT

London

Fri 10/24

3:40 pm-10:52 pm

2 stops34h 12m

Ontario

Fri 10/31

1:40 pm-9:46 am

2 stops41h 06m

$662

LondonOntario

YXU - ONT

YXUONT

London

Sun 2/22

9:25 am-10:26 pm

2 stops16h 01m

Ontario

Thu 2/26

5:40 am-9:21 pm

2 stops12h 41m

$702

LondonOntario

YXU - ONT

YXUONT

London

Sun 12/21

5:45 am-10:25 pm

2 stops19h 40m

Ontario

Sat 1/3

11:59 pm-5:05 pm

2 stops14h 06m

$724

LondonOntario

YXU - ONT

YXUONT

London

Sun 10/26

5:45 am-10:31 pm

2 stops19h 46m

Ontario

Sun 11/2

5:05 am-5:05 pm

2 stops9h 00m

$800

LondonOntario

YXU - ONT

YXUONT

London

Tue 9/30

6:10 am-12:51 pm

2 stops9h 41m

Ontario

Thu 10/30

5:05 am-5:06 pm

2 stops9h 01m

$845

LondonOntario

YXU - ONT

YXUONT

London

Sat 10/25

6:00 am-11:08 am

2 stops32h 08m

$183

LondonOntario

YXU - ONT

YXUONT

London

Sun 10/26

8:00 pm-4:28 pm

2 stops23h 28m

$242

LondonOntario

YXU - ONT

YXUONT

London

Sat 10/11

3:40 pm-5:40 pm

2 stops29h 00m

$329

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 15 results
1
2

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 $246). Flying from London, Ontario to Ontario in March is currently the most expensive (average of $328). 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 23h 33m. 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 $246). Flying from London, Ontario to Ontario in March is currently the most expensive (average of $328). 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

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 for London to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Pearson Intl to Las Vegas flights
Pearson Intl to Los Angeles flights
Pearson Intl to San Francisco flights
Pierre Elliott Trudeau Intl to Las Vegas flights
Pierre Elliott Trudeau Intl to Los Angeles flights
Pearson Intl to San Diego flights
Pierre Elliott Trudeau Intl to San Francisco flights
Pearson Intl to Santa Ana flights
Pearson Intl to Ontario flights
Toronto Island to Los Angeles flights
Toronto Island to San Francisco flights
Pierre Elliott Trudeau Intl to San Diego flights
Hamilton to San Francisco flights
Pierre Elliott Trudeau Intl to Ontario flights
Pearson Intl to San Jose flights
Pearson Intl to Palm Springs flights
Region of Waterloo Intl to San Francisco flights
Ottawa to Las Vegas flights
Pearson Intl to Sacramento flights
Hamilton to Los Angeles flights
Hamilton to Las Vegas flights
Region of Waterloo Intl to Las Vegas flights
Ottawa to Los Angeles flights
Toronto Island to San Diego flights
Pearson Intl to Fresno flights
Pierre Elliott Trudeau Intl to Santa Ana flights
Ottawa to San Francisco flights
Ottawa to Ontario flights
Pearson Intl to Oakland flights
Pierre Elliott Trudeau Intl to Sacramento flights
Pearson Intl to Burbank flights
Hamilton to Santa Ana flights
Ottawa to San Diego flights
Pearson Intl to Reno flights
Pierre Elliott Trudeau Intl to Palm Springs flights
Pierre Elliott Trudeau Intl to San Jose flights
Hamilton to San Diego flights
Hamilton to Palm Springs flights
Pierre Elliott Trudeau Intl to Reno flights
Pearson Intl to Monterey flights
Hamilton to Ontario flights
Ottawa to Burbank flights
Region of Waterloo Intl to San Jose flights
Ottawa to Santa Ana flights
Pierre Elliott Trudeau Intl to Santa Barbara flights

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.