YXU

C$ 151 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 10/7. 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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Flight Deals

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

Fri, 10 Jul - Fri, 17 Jul
WestJet Logo
8:00 a.m. - 1:50 p.m.
YYZ
-
YXU
5h 50m
1 stop
WestJet Logo
2:40 p.m. - 9:35 p.m.
YXU
-
YYZ
6h 55m
1 stop
C$ 400WestJet
Tue, 21 Jul - Fri, 24 Jul
WestJet Logo
8:00 a.m. - 1:50 p.m.
YYZ
-
YXU
5h 50m
1 stop
WestJet Logo
2:40 p.m. - 9:35 p.m.
YXU
-
YYZ
6h 55m
1 stop
C$ 402WestJet
Tue, 7 Jul - Tue, 14 Jul
WestJet Logo
8:00 a.m. - 1:50 p.m.
YYZ
-
YXU
5h 50m
1 stop
WestJet Logo
2:40 p.m. - 9:35 p.m.
YXU
-
YYZ
6h 55m
1 stop
C$ 412WestJet
Fri, 10 Jul - Fri, 17 Jul
WestJet Logo
8:00 a.m. - 1:50 p.m.
YYZ
-
YXU
5h 50m
1 stop
WestJet Logo
2:40 p.m. - 9:35 p.m.
YXU
-
YYZ
6h 55m
1 stop
C$ 419WestJet
Tue, 7 Jul - Sun, 26 Jul
WestJet Logo
8:00 a.m. - 1:50 p.m.
YYZ
-
YXU
5h 50m
1 stop
WestJet Logo
2:40 p.m. - 9:35 p.m.
YXU
-
YYZ
6h 55m
1 stop
C$ 435WestJet
Fri, 10 Jul - Fri, 17 Jul
Multiple Airlines Logo
8:00 a.m. - 1:50 p.m.
YYZ
-
YXU
5h 50m
1 stop
Multiple Airlines Logo
2:40 p.m. - 12:45 p.m.
YXU
-
YYZ
22h 05m
1 stop
C$ 439Multiple Airlines
Tue, 7 Jul - Tue, 14 Jul
WestJet Logo
8:00 a.m. - 1:50 p.m.
YYZ
-
YXU
5h 50m
1 stop
WestJet Logo
2:40 p.m. - 9:35 p.m.
YXU
-
YYZ
6h 55m
1 stop
C$ 448WestJet
Tue, 14 Jul - Tue, 21 Jul
WestJet Logo
8:00 a.m. - 1:50 p.m.
YYZ
-
YXU
5h 50m
1 stop
WestJet Logo
2:40 p.m. - 9:35 p.m.
YXU
-
YYZ
6h 55m
1 stop
C$ 455WestJet
Sun, 2 Aug - Sun, 9 Aug
Air Canada Logo
9:45 a.m. - 2:52 p.m.
YSB
-
YXU
5h 07m
1 stop
Air Canada Logo
5:40 a.m. - 9:00 a.m.
YXU
-
YSB
3h 20m
1 stop
C$ 943Air Canada
Sun, 2 Aug - Sun, 9 Aug
Air Canada Logo
9:45 a.m. - 2:52 p.m.
YSB
-
YXU
5h 07m
1 stop
Air Canada Logo
5:40 a.m. - 9:00 a.m.
YXU
-
YSB
3h 20m
1 stop
C$ 945Air Canada
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Good to know

Low seasonJanuary
Cheapest flightC$ 151
Best time to beat the crowds (12% less expensive on average)
Most popular time to fly (4% 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 3375 reviews
7.9Crew
7.0Comfort
7.4Boarding
6.1Entertainment
6.2Food
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
YYC - YOW
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.

The flight didn’t happen because they apparently lost my check in and wouldn’t let me board.

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.

Took 3 hours to check in and drop off our suitcases. Half of the passengers were still in line by boarding time. The computer systems and staff were very slow. Staff were also disorganized and kept allowing later flights to skip lines. Suitcases were piling on that several other passengers didn't get their suitcases. Then, we were sitting in the plane for 2 hours and were told that the flight was overbooked. We missed our connecting flight and had to fly the following day but with a stop over. Good thing ONE WestJet customer rep was pleasant and actually knew how to do her job when we wanted to rebook to a direct flight. Thank you to Kim at Toronto airport. Terrible experience at PUJ. Won't go back to Dominican Republic.

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

There is no snack and nit much that would be considered gluten free in yiur food selections. One of your snacks should be a gluten free cookie or small bar etc. maybe it was me but I didn’t see any free movies just internet connection and YouTube .

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

No dogs! Can we have no dogs in the cabin? Why was there a yappy little dog behind me? Lucky I had ear plugs. Sorry for others without

Good value, minor delay due to waiting for inbound plane but they gave accurate information about wait time. Able to switch to a seat by my husband thanks to a kind flight attendant

Arrival at Comox from, London,ON 6 hours later... No bueano

this flight was exceptional due to the plane itself being updated with longer seat belts so no need for the extender and access to a tv.

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

Air Canada has very professional , friendly and co operative crew.

I liked the fact that we arrived on time. What I did not like, I paid for a seat. Unfortunately a very large women sat beside me (required a belt extension). Her body spilled to my side. Not her fault but I had to lean to the left because her body was literally on my side of the seat. This caused a back ache. I was unable to sit straight the entire flight. There should be some form allowance (wider seat) for morbidly obese passengers. These seats are not designed for extremely obese people. I feel compassionate towards these obese passengers but I got off the plane with a substantial lower back ache. I myself have a degenerative disk disease and this did not help me

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

Our AC flight was canceled not once but twice on the same day to Quebec City at Toronto Pearson Airport. 2;30 AC and 9;40PM AC flight. After having our 2:35 flight canceled, we were bumped the second time because of large student groups visiting Quebec City. We were sent to Montreal on an 11:30 flight which landed close to 12:45AM. We were given a hotel room at the Marriot Hotel next to the airport. We had less than 4 hours sleep before we being taken to the airport for our 7AM flight to Quebec City. We didn't have much time to use our vouchers given for breakfast once we had cleared customs for the 2nd time since leaving Toronto Pearson Airport. We missed a full evening in Quebec City and lost our hotel room for the night. We were exhausted the next day and missed an excursion we had planned. My wife and I are both seniors in our seventies, and we weren't happy to be treated in this manner. Air Canada could have used a larger plane to accommodate us and the other ten or so people that were bumped from their flight to Quebec City in order to accommodate student groups. We will endeavor never to fly Air Canada again in future and we will not recommend flying with this airline to our friends and families.

Complimentary food options could be better. There should be a little wait between people boarding with children under 6 and the rest of the boarding. There isn’t enough time to get yourself situated before take off.

I was tired enough to fall asleep soon after takeoff and slept until "we are starting our descent to Toronto" announcement. That's not bad at all.

Very tight seats - no legroom at all, very tight to the person in front of you. If you have basic fare, you are loading zone 6 regardless of where you are sitting in the plane - meaning even as a middle aisle person at the front of the plane, I had to get people to get up and let me in as they had boarded earlier. Having to pay for a carry on is criminal. I am a frequent flyer, and air Canada has now joined the list of other terrible North American Airlines.

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.

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