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Find cheap flights from London to Ontario from C$ 318

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Ontario departing on 8/9. 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
0 bags
Mon 3/6
Mon 10/6

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Best Ontario Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Toronto
TorontodirectC$ 589
Ottawa
Ottawa1 stopC$ 798

Good to know

Low season

January

High season

July

Cheapest flight

C$ 318
Best time to beat the crowds (21% less expensive on average)
Most popular time to fly (18% more expensive on average)
Flight from London City to Toronto

FAQs - booking Ontario flights

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

    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 London to Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from London 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 London to Ontario?

    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 Ontario with an airline and back to London with another airline.

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

    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 Ontario from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Ontario

  • Morning departure is around 13% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from London to Ontario

 
Need help choosing which airline to fly with from London to Ontario? 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.
8.2
Singapore AirlinesOverall score based on 1466 reviews
7.8Food
8.1Comfort
8.1Entertainment
8.7Crew
8.4Boarding
Airline reviews

My experience with Scoot is very good. Will have no issue flying with Scoot again.

8.0 ExcellentAnonymous, Apr. 2024SIN - DPS
Read more about Singapore Airlines reviews

My experience with Scoot is very good. Will have no issue flying with Scoot again.

Good flight. The food was served a bit late, hence a hurry to finish before landing. Excellent crew and service

I requested an aisle seat and got a middle seat The flight gate was changed and the flight was delayed

People were so nice! Economy seats were small and cramped feeling for me. I’m slender and 6 feet tall

Perfect experience from boarding through to leaving the flight, comfortable and personalised service from all staff, highly recommended

The overall operation needs to be improved. The in-flight services took forever and sometimes ran out of options.

Left hr late & arrived 1hr late luggage was slow to be offloaded! The flight crew & food were good! Movie selection was ok!

We started with a 2 hour delay due to some airplane technical issues, and while we got a little snack pack, it was a pretty long delay for SQ. The flight itself was short, there's no entertainment on the B737-800 and there's a small snack. Functional.

The male traveller seated in the row in front diagonally opposite my husbands seat across the aisle as soon as the seatbelt sign went off moved across the aisle into the seat in front of my husband for the entire journey from London to Singapore he had his seat reclined and pushed back and the seat touching my husbands knees for the entire journey from London to Singapore. very uncomfortable for my husband.

Airport lounge for business class is too crowded and not comfortable. Poor foods and facilities. Boarding was delayed. A lot of coughing people in the flight even in the business class, which indicated poor screening and health risks.

Cathay Pacific seems to be an airline in trouble and on its way out. Lots of broken or poorly functioning things like entertainment screens, seats, and enough well trained staff to handle a full flight. Sad...

The flight crew was exceptionally good. Personal needs were well met. The food choices were very nice.

While I was in great pain, the seat was sufficiently comfortable to allow me to rest and not be in so much pain.

My seat was sold off to someone else. Had to wait 9 hours to catch the next filght. Definitely will never use Cathay Pacific again. Bad, very bad airline. will comment on google reviews too.

Not impressed with check in desk staff at Vancouver airport. Not a professional mind service and not cared or tried to help. Don’t think I would fly with them again

One of the worst flight in business class by qatar airways and I’m no stranger with qatar airways businesses class, I travelled with the extensively in the past 12 years

Very comfortable flights. Not so many new releases in terms of films.

The aircraft was slightly newer but the food was very bad. Bland and uninteresting. Nothing special at all.

The crew were fine. I didn’t enjoy the food at all. I found it unappetising and really had trouble eating it. The comfort level was fine and our return flight is with Cathay Pacific but honestly I probably wouldn’t fly Cathay Pacific again.

Would have liked working outlets on the flight. The first meal was very bleh, the second meal was a lot better so overall okay meals

On the flight back the seats where very uncomfortable, they where so bad that my back started to hurt after the first 2 hours. I can sit in a wooden chair for 2 hours. But these where just horrible, it just shows how cheap the airline has become. And the cabin was heated all those people in a heated cabin during a night flight. It was clear the climate control was not working. To top that off you are not even offered a glass of water, these people are animals.

We purchased a Go First Pass for 10 Euros each so we could board first, but everyone was able to board at the same time so we wasted 20 Euros. The flight left ab out 15 minutes late and was not allowed to land at Healthrow so we had to circle Heathrow for about 45 minutes. This caused us to almost miss our flight from Heathrow to Atlanta.

Severely delayed with no notice. Could have arrived at the airport hours later had we been informed of the delay

Once the boarding sign went on and all passengers gathered in line, we were left waiting standing up for almost an hour because there was a delay.

It would be nice to have vegan options for meals. The entertainment was not working on the the way to Austria. It was only available near the end of flight to Canada. The service was excellent.

Flight was delayed by approx 1 hour. The boarding process and the flight itself were very good, slightly tight squeeze for my legs but overall happy.

The business class layout on this plane is tightly packed and atrocious with no sense of privacy.

Flight was meant to leave at 8:30pm but there was a 2 hour delay 😞

Airmalta does not include meals in their flights and neither offers entertainment.

Pros: "The crew was amazing and took measures to make the flight Covid safe"
Cons: "The food was not the best and Twistees weren't available. Also the seats felt narrow"

The trip itself was good. I have given only good as rating, because my first flight has been cancelled by a different airline and that caused disruption in my trip. I spent over ten hours in Luton airport and that caused me high tiredness, sickness, because of the very early initial trip. easyJet staff has been professional and friendly.

Very pleasant crew, working hard on a full plane. Delay by a broken seat. However crew made back 60% of the delay.

Delayed and then further delayed with no announcement made so that all the passengers (who were standing in the jetty) could hear. We stood there for well over 20 minutes. We were further delayed through weather but no one explained that to us until the pilot made an announcement when finally on board

easyJet need to ensure that whether pre-booking seats or not children aren’t split from their parents the crew spent the majority of boarding asking passengers to move to accommodate two families. Surely the system identifies minors on a booking !!!!! It was all very frustrating to watch and caused delays which I’m sure cost easyJet more in the long run rather that automatically allocating families with minors seats together automatically.

As you would expect from a budget airline Left and arrived on time, no frills, not even a glass of water offered But you get what you pay for

I had an emergency escape seat. The attendant gave the extrA briefing to my side of the aisle but didnt direct it at all to the other where my wife was sitting

Boarding great. Didn’t eat or drink so can not comment.

Total jobs worths over carry on bags, charged £96 extra for bags that were clearly hand luggage

3 hours delayed Don’t understand why when you have paid for ‘speedy boarding’ they call you forward to then make you stand fir another 20 minutes in a confined space before boarding the plane.

The pilot did everything possible to make up the 35 minute delay. His communications were honest, prompt and positive throughout.

I got denied boarding bevause they said they "ran out of seats on a plane"

Speakers were blaring. It's like being in a Moroccan market and you keep getting shouted at with what's for sale

What can you say Ryanair get you there,no frills Not so cheap anymore ..... but what is now days! Would use again as always. Good flight times for us.

Very unpleasant staff, disgusting service, ignoring requests, refusal to help

Late again rude staff at gate bullying passengers made us stand in the cold 3degrees for 40 mins before they let us board

The usual average Ryanair flight, but we landed 20 min before due time, which was very good.

Enjoyed our flight with Ryanair to Arrecife. Flight boarded pretty much on time, crew were welcoming and very good. Generally good for a frequent low cost flight, Seats could however have been more comfortable.

I wouldn't like to fly with them anymore, I don't like their service, you can hardly take carry-on luggage because they charge you for everything, you can't ask for a glass of water, and the flight attendant tells you that they don't have any, that you have to Paying 3 euros for a bottle of water horrible, I don't recommend it, and they don't have anything low cost, because the plane ticket may not be expensive but what they charge you later for the rest, the flight becomes more expensive, it's the only airline that I don't like it so far, and I traveled a lot.

Staff were friendly and flight was on time. Free drink and snacks would have been appreciated.

The boarding process was fast and easy , but the airport sign was not up on the board, so it was hard to know the correct gate , on the airplane there was NO Snacks and NO water …. Everything needs to be purchase …. It’s not worthy for the price we paid !

Book cheap flights from London to Ontario

Recent round-trip flight deals

4/6Tue
directAir Transat
8h 05mLGW-YYZ
10/6Mon
1 stopAir Transat
29h 35mYYZ-LGW
C$ 589
4/6Tue
directAir Transat
8h 05mLGW-YYZ
10/6Mon
directAir Transat
7h 05mYYZ-LGW
C$ 593
9/10Wed
1 stopTAP AIR PORTUGAL
12h 15mLHR-YYZ
23/10Wed
1 stopTAP AIR PORTUGAL
11h 35mYYZ-LHR
C$ 626
9/10Wed
1 stopTAP AIR PORTUGAL
12h 55mLHR-YYZ
23/10Wed
1 stopTAP AIR PORTUGAL
11h 35mYYZ-LHR
C$ 630
4/6Tue
2 stopsAir Canada
15h 59mLHR-YTZ
12/6Wed
1 stopAir Canada
18h 10mYTZ-LHR
C$ 636
22/5Wed
1 stop
15h 40mLHR-YYZ
26/5Sun
1 stop
17h 30mYYZ-LHR
C$ 636
13/5Mon
2 stopsAir Canada
14h 59mLHR-YTZ
19/5Sun
1 stopAir Canada
29h 10mYTZ-LHR
C$ 637
17/6Mon
1 stop
17h 05mLHR-YYZ
25/7Thu
direct
7h 10mYYZ-LHR
C$ 644
17/9Tue
1 stopITA Airways
31h 00mLGW-YYZ
27/9Fri
1 stopITA Airways
13h 45mYYZ-LGW
C$ 675
24/9Tue
1 stopITA Airways
26h 15mLCY-YYZ
1/10Tue
1 stopITA Airways
18h 35mYYZ-LCY
C$ 688

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Recent one-way flight deals

8/9Sun
1 stop
23h 54mLCY-YYZ
C$ 318
29/5Wed
1 stop
26h 09mLGW-YYZ
C$ 336
19/6Wed
1 stop
26h 09mLGW-YYZ
C$ 338
23/9Mon
1 stopTAP AIR PORTUGAL
33h 35mLGW-YYZ
C$ 446
8/5Wed
directAir Transat
8h 00mLGW-YYZ
C$ 454
17/9Tue
1 stopTAP AIR PORTUGAL
33h 35mLGW-YYZ
C$ 463
25/5Sat
1 stopWestJet
17h 39mLGW-YHM
C$ 480
10/5Fri
directAir Transat
7h 55mLGW-YYZ
C$ 487
13/5Mon
1 stopWestJet
14h 36mLGW-YYZ
C$ 504
12/5Sun
2 stopsAzores Airlines
31h 55mLHR-YYZ
C$ 723

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Last minute flights from London to Ontario

Last minute flight, train and bus deals

8/5Wed
directAir Transat
8h 00mLGW-YYZ
18/5Sat
multi-stopAir Transat
29h 35mYYZ-LGW
C$ 608
8/5Wed
multi-stopAir Transat
13h 26mLGW-YTZ
18/5Sat
multi-stopAir Transat
11h 20mYTZ-LGW
C$ 615
8/5Wed
multi-stopAir Canada
12h 55mLHR-YYZ
14/5Tue
directAir Canada
7h 10mYYZ-LHR
C$ 750
8/5Wed
multi-stopLufthansa
11h 50mLHR-YYZ
18/5Sat
multi-stopLufthansa
10h 30mYYZ-LHR
C$ 753
8/5Wed
directAir Canada
7h 55mLHR-YYZ
14/5Tue
directAir Canada
7h 05mYYZ-LHR
C$ 755
9/5Thu
multi-stopLufthansa
11h 50mLHR-YYZ
18/5Sat
multi-stopLufthansa
9h 30mYYZ-LHR
C$ 768
7/5Tue
multi-stopScandinavian Airlines
24h 00mLHR-YYZ
29/5Wed
multi-stopScandinavian Airlines
14h 55mYYZ-LHR
C$ 778
9/5Thu
multi-stopScandinavian Airlines
27h 30mLHR-YYZ
18/5Sat
multi-stopScandinavian Airlines
19h 40mYYZ-LHR
C$ 779
7/5Tue
multi-stop
13h 40mLTN-YYZ
29/5Wed
multi-stop
13h 35mYYZ-LTN
C$ 789
5/5Sun
direct
7h 55mLHR-YYZ
18/5Sat
direct
7h 05mYYZ-LHR
C$ 790

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Flights to Ontario

Return flight deals:

Ontario - London

Cabin classes:

C$ 3,993
C$ 1,223
C$ 641