YXU

C$ 243 Find Cheap Flights from Ontario to London

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to London departing on 23/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

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Cheap Flights from Ontario to London

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to London

Sat, 29 Nov - Thu, 11 Dec
Air Canada Logo
2:15 p.m. - 3:05 p.m.YYZ-YXU
0h 50mdirect
Air Canada Logo
9:45 a.m. - 10:35 a.m.YXU-YYZ
0h 50mdirect
C$ 455Air Canada
Find Deal
Mon, 3 Nov - Wed, 12 Nov
Air Canada Logo
8:55 p.m. - 9:45 p.m.YYZ-YXU
0h 50mdirect
Air Canada Logo
3:25 p.m. - 4:15 p.m.YXU-YYZ
0h 50mdirect
C$ 456Air Canada
Find Deal
Tue, 23 Sep - Tue, 30 Sep
Air Canada Logo
2:15 p.m. - 3:02 p.m.YYZ-YXU
0h 47mdirect
Air Canada Logo
6:15 a.m. - 7:02 a.m.YXU-YYZ
0h 47mdirect
C$ 471Air Canada
Find Deal
Tue, 23 Sep - Tue, 30 Sep
Air Canada Logo
2:15 p.m. - 3:02 p.m.YYZ-YXU
0h 47mdirect
Air Canada Logo
3:40 p.m. - 4:27 p.m.YXU-YYZ
0h 47mdirect
C$ 473Air Canada
Find Deal
Sat, 5 Jul - Sun, 6 Jul
Air Canada Logo
8:40 p.m. - 9:27 p.m.YYZ-YXU
0h 47mdirect
Air Canada Logo
9:55 a.m. - 10:44 a.m.YXU-YYZ
0h 49mdirect
C$ 507Air Canada
Find Deal
Wed, 30 Jul - Wed, 6 Aug
 Logo
5:45 a.m. - 9:00 p.m.YOW-YXU
15h 15m1 stop
 Logo
9:45 p.m. - 12:48 a.m.YXU-YOW
27h 03m1 stop
C$ 527
Find Deal
Wed, 30 Jul - Wed, 6 Aug
 Logo
5:45 a.m. - 9:00 p.m.YOW-YXU
15h 15m1 stop
 Logo
9:45 p.m. - 8:05 a.m.YXU-YOW
34h 20m2 stops
C$ 539
Find Deal
Sun, 3 Aug - Wed, 13 Aug
Flair Airlines Logo
9:00 p.m. - 9:00 p.m.YYZ-YXU
24h 00m1 stop
Flair Airlines Logo
9:45 p.m. - 7:15 a.m.YXU-YYZ
33h 30m1 stop
C$ 559Flair Airlines
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Thu, 17 Jul - Sun, 20 Jul
WestJet Logo
7:15 p.m. - 5:14 a.m.YOW-YXU
9h 59m1 stop
WestJet Logo
8:00 p.m. - 6:45 a.m.YXU-YOW
10h 45m1 stop
C$ 565WestJet
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Fri, 22 Aug - Thu, 28 Aug
WestJet Logo
7:15 p.m. - 5:14 a.m.YOW-YXU
9h 59m1 stop
WestJet Logo
8:00 p.m. - 6:45 a.m.YXU-YOW
10h 45m1 stop
C$ 600WestJet
Find Deal
Useful Info

Good to know

Low seasonNovember
High seasonJune
Cheapest flightC$ 243
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Toronto Pearson Airport to London

FAQs for booking flights from Ontario to London

  • How does KAYAK find such low prices on flights from Ontario to London?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to London.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to London?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to London?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to Ontario with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to London?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top airlines flying from Ontario to London

 
Need help choosing which airline to fly with from Ontario to London? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
WestJetOverall score based on 2873 reviews
6.2Food
7.4Boarding
7.1Comfort
7.9Crew
6.1Entertainment
Airline reviews

West Jet flight was cancelled and I was not notified. I found out when I tried to check in on-line. Spent 4 hours on the phone with West Jet and Just Fly trying to figure what happened.

2.0 MediocreAmy, Jun 2025LAX - YYZ
Read more WestJet reviews

West Jet flight was cancelled and I was not notified. I found out when I tried to check in on-line. Spent 4 hours on the phone with West Jet and Just Fly trying to figure what happened.

Not the greatest experience everything was pretty mediocre. My seat was by the washroom in the aisle and was not located well as everyone past each other people were right in my seat and space.

The small prop plane was crowded and the overhead luggage storage is a smaller than on the jets. Other than that, the crew was good, the flight was on time and the landing was smooth.

It was good, flight was on time, boarding was smooth and done in zones, food was good too but there was no form of entertainment. Luggage’s were intact. So an overall good flight

We never had an experience they canceled the flight and they did not offer us an alternative flight. I had to book one on my own expense. They offered us food voucher and we could not use them at the airport it kept saying not attached to an existing flight. The people at the counter were rude and cold and they did not care about our situation

Flight was delayed 3 times. Then cancelled due to pilot being timed out. They refused hotel vouchers. Gate attendants were very rude and could not help you at all.

No access to any entertainment No food other than a cookie or pretzels even tho flight was over the supper hour Seats very close together and very little leg room Staff was very good

Flight cancelled and Kayak switched our return flight to a red eye. Ridiculous.

The cancelation of my flight from Toronto to Edmonton without any solution given to me for my next flight. Very poor connection from Toronto to Edmonton

Too squished in seats. I'm 110 lbs and 5'6....can't imagine being any bigger and flying

Like- beer/wine for free Dis-like- all other aspects- customer service was horrible the entire trip. No help from Air Canada after they changed flight 6+ hours later. Also they put us on standby for no reason. Then almost 2 hours to get our bags after we arrived back at airport

This was actually a bus ride to the KW airport. It was smooth and comfortable and on time.

The plane in use lacked an entertainment system (perhaps because it was still being updated?). It was an overnight flight so it wasn't terrible but still. The actual seat was adequate but not great. As an economy flyer, food review is largely irrelevant. I am unhappy with this race to the bottom for services provided especially as it applies to baggage restrictions.

Good overall but I’m 5’10 and seating is always tight

Better than usual. We’ve flown air Canada for years at least once or twice a year and used it to bring our Canadian American son back and forth from USA and Canada and Europe and we have had MANY bad experiences with late flights, missed connections, boarding issues, for almost 10 years. Just lots of bad experiences. This one wasn’t bad at all. It’s simply what we expected. Even though the first flight this time was 45 min late in leaving due to a maintenance issue, that didn’t mess us up. But all else was fine so we were pleased.

People pay over $1000 to fly from Victoria to Toronto, and they do want to charge you for a headphone that may cost less than 20 cents! You could add 20 cents to the ticket price and not to try to sell it on the plane. That is so cheap!!!

The flight wose Daley 2hr I lost my connect flight i wose delay one day and I am not happy

Very tight leg room and not a fan of the new policy on no free carry on luggage. Besides that, it was fine.

the seats aren't the most comfy -- too little padding and I could feel whatever the passenger behind me was doing. Otherwise, it's all good.

I’m writing to share my deep frustration with a recent experience, which I feel reflects a troubling trend in the airline industry—one where customer care often takes a backseat to profit maximization. First, I do want to acknowledge a positive aspect: I appreciated that your team accommodated a seat change due to my medical needs without charging an additional fee. This gesture made a genuine difference during my trip, and I’m thankful for that. That said, the overall experience left me extremely disappointed. The ticket I purchased for myself and a companion turned out to be “basic”—a fare category I now understand to be non-refundable and non-transferable. Unfortunately, my travel companion was involved in a car accident and could not fly. Not only was I unable to receive any kind of reimbursement, but I also couldn't transfer the ticket to someone else, despite the flight being overbooked by three passengers. This inflexibility felt exploitative. To add to the frustration, I had to shoulder additional unexpected expenses: overpriced in-flight food and a costly baggage fee on my return trip. The entire process felt more like a profit-maximizing scheme than a customer service experience. I understand that airlines, like any business, need to remain financially viable. However, creating fare structures that penalize customers during emergencies, while simultaneously overbooking flights, comes across as deeply unfair. It’s hard to feel like a valued passenger in this environment. While I don’t expect much will come of this message, I do hope Air Canada takes this feedback seriously. There’s an opportunity to lead with integrity in an industry where choices for consumers are becoming more limited and experiences increasingly transactional.

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