YXU

C$ 192 Find Cheap Flights from Ontario to London – Compare and Save

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 6/9. 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, 0 bags

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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, 5 Sep - Sat, 12 Sep
WestJet Logo
12:25 p.m. - 1:50 p.m.YOW  Ottawa-YXU London
25h 25m1 stop Winnipeg
WestJet Logo
6:10 a.m. - 5:15 p.m.YXU  London-YOW Ottawa
11h 05m1 stop Calgary
C$ 457WestJet
Wed, 23 Sep - Tue, 29 Sep
WestJet Logo
8:15 p.m. - 5:20 a.m.YOW  Ottawa-YXU London
9h 05m1 stop Calgary
WestJet Logo
6:10 a.m. - 5:15 p.m.YXU  London-YOW Ottawa
11h 05m1 stop Calgary
C$ 460WestJet
Wed, 23 Sep - Tue, 29 Sep
WestJet Logo
8:15 p.m. - 5:20 a.m.YOW  Ottawa-YXU London
9h 05m1 stop Calgary
WestJet Logo
6:10 a.m. - 5:15 p.m.YXU  London-YOW Ottawa
11h 05m1 stop Calgary
C$ 472WestJet
Thu, 3 Sep - Sun, 6 Sep
Multiple Airlines Logo
11:10 p.m. - 1:50 p.m.YYZ  Toronto Pearson Intl-YXU London
14h 40m1 stop Winnipeg
Multiple Airlines Logo
2:40 p.m. - 8:40 p.m.YXU  London-YYZ Toronto Pearson Intl
6h 00m1 stop Winnipeg
C$ 475Multiple Airlines
Fri, 2 Oct - Sat, 10 Oct
WestJet Logo
8:15 p.m. - 5:20 a.m.YOW  Ottawa-YXU London
9h 05m1 stop Calgary
WestJet Logo
6:10 a.m. - 5:35 a.m.YXU  London-YOW Ottawa
23h 25m1 stop Calgary
C$ 475WestJet
Mon, 31 Aug - Sun, 6 Sep
Multiple Airlines Logo
4:10 p.m. - 1:50 p.m.YOW  Ottawa-YXU London
21h 40m1 stop Winnipeg
Multiple Airlines Logo
2:40 p.m. - 11:35 a.m.YXU  London-YOW Ottawa
20h 55m1 stop Winnipeg
C$ 503Multiple Airlines
Thu, 3 Sep - Sun, 6 Sep
Multiple Airlines Logo
6:30 p.m. - 1:50 p.m.YYZ  Toronto Pearson Intl-YXU London
19h 20m2 stops Calgary Winnipeg
Multiple Airlines Logo
2:40 p.m. - 8:40 p.m.YXU  London-YYZ Toronto Pearson Intl
6h 00m1 stop Winnipeg
C$ 523Multiple Airlines
Thu, 24 Sep - Mon, 28 Sep
Air Canada Logo
4:55 p.m. - 5:43 p.m.YYZ  Toronto Pearson Intl-YXU London
0h 48mdirect
Air Canada Logo
10:05 a.m. - 10:50 a.m.YXU  London-YYZ Toronto Pearson Intl
0h 45mdirect
C$ 574Air Canada
Fri, 18 Sep - Fri, 2 Oct
Air Canada Logo
2:00 p.m. - 2:50 p.m.YYZ  Toronto Pearson Intl-YXU London
0h 50mdirect
Air Canada Logo
5:40 a.m. - 6:26 a.m.YXU  London-YYZ Toronto Pearson Intl
0h 46mdirect
C$ 598Air Canada
Fri, 18 Sep - Fri, 2 Oct
Air Canada Logo
2:00 p.m. - 2:50 p.m.YYZ  Toronto Pearson Intl-YXU London
0h 50mdirect
Air Canada Logo
5:40 a.m. - 6:26 a.m.YXU  London-YYZ Toronto Pearson Intl
0h 46mdirect
C$ 599Air Canada
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Good to know

Low season

January

Cheapest flight

C$ 192
Best time to beat the crowds (14% less expensive on average)
Most popular time to fly (3% more expensive 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.

Reviews of the 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 3430 reviews
7.9Crew
7.0Comfort
6.2Food
7.4Boarding
6.1Entertainment
Airline reviews

I didn’t have any food but my Prosecco hit the spot. We left on time and the crew was friendly.

10.0 ExcellentKimberley, Apr 2026
Read more WestJet reviews

I didn’t have any food but my Prosecco hit the spot. We left on time and the crew was friendly.

I wasn’t able to book or pay for a seat and they forgot to check me in for my third flight so I spent 24 hours in Toronto waiting for another one.

I like the wider seats, Plus lots of legroom, Lacking entertainment, no tv or screen to play with

The keg from Edmonton to Toronto My wife found it very cold. Other than that great flight.

Flight itself good .Landing at terminal3 and connections to terminal1,it is connections nightmare,specially for disable person

The seats very Uncomfortable, no meal and no entertainment for a 4Hours flight. Smooth Flight, Great Take off and landing. Superb crew!

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

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

Our seats that I had paid extra for near the front of the aircraft were no longer available on this replacement aircraft. We were told we either had to accept the new replacement seats in row 27 near the back in seats E and B, no longer together, or sit in the very back in row 30 squeezed into E and F seats that do not recline or have trays that provide a flat platform for a refreshment. This is not what I had expected. However, again your flight crew did the best they could given the circumstances.

Not a tonne of food for purchase items for early morning.

Comfortable seats with good leg room. But not screens on seat backs.

Air traffic delay meant boarding started, then plane was evacuated and passengers sent back to the terminal for 1 hour. Very little information shared.

The crew was amazing! I was a bit surprised and disappointed that there was not wifi available for personal use. The only thing I would change would be the seat cushions. They are not comfortable at all for long flights.

Delayed by 5+ hours and they give a voucher for only $20 CAD which isn’t even redeemable at any place with edible food. Then took almost an hour to clean craft after it landed. And nonsensical boarding delayed even further. We didn’t leave until 1:30am….

Had to cancel the flight because there was a 14 hour layover before the flight. Unacceptable.

I travelled in Business class for the first time and wish I could do that again.

I like the free air Canada wifi and being able to watch things on there. The basic snacks are good, just wish I could have both. If I’m being really picky, the flight attendant who filled my drink, filled it half with fizz and didn’t take the second to let it go down and add more, so I got maybe half a cup of pop.

Too many delays. Seats too small. A budget airline. Will never fly Air Canada again.

The flight is very short, may be a little snack can be offered

They canceled my flight last minute, no hotel provided and they rescheduled Sunday night, hope they refunded some money

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