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Find cheap flights from London to Ontario from £172

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 17/6. 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
Thu 27/6
Thu 4/7

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Best Ontario Flight Deals

Cheapest return prices found by our users on KAYAK in the last 72 hours

Toronto
Toronto1 stop£325
Ottawa
Ottawa1 stop£466
London
London1 stop£537
Windsor
Windsor2 stops£541
Thunder Bay
Thunder Bay2 stops£531

Good to know - Cheap tickets from London to Ontario

Low season

January

High season

July

Cheapest flight

£172
Best time to beat the crowds (1% less expensive on average)
Most popular time to fly (23% more expensive on average)
Flight from London Stansted Airport to Toronto Pearson Airport

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 return 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 a cheap flight from London to Ontario

  • Morning departure is around 50% 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.
7.8
Cathay PacificOverall score based on 1056 reviews
8.0Boarding
8.2Crew
7.8Comfort
7.5Food
7.9Entertainment
Airline reviews

Great, the flight attendants were very friendly and the food was also good.

10.0 ExcellentAnonymous, May 2024LAX - HKG
Read more about Cathay Pacific reviews

Great, the flight attendants were very friendly and the food was also good.

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.

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 on board air steward really made the journey. He was very entertaining

I was disappointed there was a 40 minute delay to flight

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.

Not great! Rude staff in London and the worse baggage reclaim I’ve ever seen. Great staff in flight but doubt I’ll fly with them again

Staff had been really impolite at the boarding area and for both ways charged high extra fees without a reason. For the check-in luggage which was measured 3.5 kg and was confirmed by the stuff to cost 40 € , 60 Euros had been purchased from our credit card. When confronted staff did call us both liars and claimed to never have announced anything. Flight back , when not wanting to press a backpack in a measuring metal instead of hand measuring , staff got angry that one did not follow her order, which was than escalated by the team. Although carrying a baby anyways staff did not offer any help in the unreasonable process and than charged again extra money. Cabine crew has been friendly but this experience LL lead to not booking easy jet at all in the future. Check in process in Edinburgh anyways chaotic,to the family check-in and disabled check-in everybody else was guided for check in process, so people just getting in between each other, not possible to monitor your own stuff.

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

Very good, everything went straight forward, boarding, during the flight, landing and all on time Well done

flight delayed, no information given until late on, Ryanair app said "on time" until 5 minutes before expected departure time, crew rushed us to board, when it was already 3 hours late

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.

Great flight and reminded that the logistics completely Astoria. No real story about victors, m

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.

Really quick check in and security at Heathrow Terminal 5. Staff on board were lovely and very friendly. Could have provided a few more drinks on the flight but they were available at the back of the plane.

Flight boarded and took off late for unknown reasons. Crew insisted we check our hand luggage due to full flight, which it was not even close to full. Then had to wait almost an hour a and a half for the hand luggage to come onto the luggage belt since it was loaded last. This came after many hours of traveling pregnant with my 6 year old daughter. Really didn’t appreciate the unnecessary delays. What the hell?

Left late. Crowded like cattle. Standing and waiting. Food on board getting worse.

Terrible- the flight time was delayed and then I was denied boarding because I arrived at the new time of departure

Flight delayed an hour due to plane maintenance issues after getting in line to board. Issue was plane galley ovens which eliminated hot meals for overseas flight. Cold selections were limited due to availability. Drink and meal service (already an hour delayed) was very slow. Upon arrival in Nashville, had to sit at gate for about 15 minutes before disembarking with no explanation. Local police then boarded plane as we were disembarking so maybe that was the issue.

Boarding good. Seats uncomfortable when lie flat. Food was awful. Tasted stale and chicken was dry. No live tv or flight map. Had to pay for internet.

Poor technical details on this plane. 1) There was no WiFi on an 8 hour long-haul flight. So no work could be done. That's below the standard expected for airlines these days. 2) The power outlet at my seat was busted and not working. 3) The headphone jack was loose and I had to keep adjusting my headphones to get good reception, or when it slipped out. - The flight was delayed to due mechanics. Sometimes this can't be avoided, I understand, and it's a big inconvenience to arrive that much later when traveling across time zones (then arriving at 4am from the prior time zone). - Also unique to this flight, the northern lights were visible on the right side of the aircraft, but I only found out after we landed (b/c again no wifi). I understand there are considerations about people being out of their seats to look, but I feel extremely disappointed and resentful that I wasn't told so that I could have a chance to look at this probably once-in-a-lifetime cosmic event from a view in the sky. - Flight crew was otherwise friendly and helpful.

Our flight was delayed by over 6 hours. We then had to deplane, stay overnight in a hotel then fly out the next day, 23 hours late.

I would have preferred something lighter for the second meal. Maybe a small sandwich .

They cancelled our flight the morning of departure at 4:30am.

Book cheap flights from London to Ontario

Cheapest flights to Ontario from London found in 2024

Recent return flight deals

11/9Wed
1 stopIcelandair
11h 10mLGW-YYZ
21/9Sat
1 stopIcelandair
9h 45mYYZ-LGW
£325
11/11Mon
1 stopIcelandair
11h 15mLGW-YYZ
30/11Sat
1 stopIcelandair
10h 10mYYZ-LGW
£328
26/9Thu
1 stopLufthansa
13h 20mLHR-YUL
30/9Mon
directLufthansa
6h 40mYUL-LHR
£377
5/11Tue
1 stopLufthansa
11h 25mLHR-YYZ
14/11Thu
directLufthansa
7h 10mYYZ-LHR
£398
5/11Tue
directBritish Airways
8h 10mLHR-YYZ
18/11Mon
directBritish Airways
7h 05mYYZ-LHR
£403
25/9Wed
directBritish Airways
7h 50mLHR-YYZ
8/10Tue
directBritish Airways
7h 15mYYZ-LHR
£406
12/11Tue
1 stopSWISS
12h 25mLHR-YYZ
19/11Tue
2 stopsSWISS
21h 20mYYZ-LHR
£423
10/9Tue
2 stopsSWISS
50h 24mLHR-YYZ
23/9Mon
2 stopsSWISS
42h 55mYYZ-LHR
£429
13/6Thu
2 stopsFinnair
28h 54mLGW-YYZ
22/6Sat
2 stopsFinnair
21h 10mYYZ-LGW
£444
30/6Sun
2 stopsFinnair
39h 24mLGW-YUL
10/7Wed
1 stopFinnair
16h 27mYUL-LGW
£467

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Recent one-way flight deals

17/6Mon
1 stop
12h 14mSTN-YYZ
£172
11/6Tue
1 stop
21h 49mLGW-YYZ
£180
4/9Wed
1 stop
21h 24mLGW-YYZ
£182
26/9Thu
1 stopLufthansa
12h 19mLHR-YTZ
£430
21/11Thu
1 stopLufthansa
13h 10mLCY-YYZ
£435
24/10Thu
directFinnair
7h 10mLHR-YUL
£463
20/6Thu
directBritish Airways
7h 10mLHR-YUL
£513
17/6Mon
directBritish Airways
7h 10mLHR-YUL
£524
21/6Fri
1 stopKLM
16h 15mLCY-YYZ
£537
2/7Tue
3 stopsKLM
20h 17mLCY-YYZ
£540

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Last minute flights from London to Ontario

Last minute flight, train and bus deals

2/6Sun
multi-stop
30h 14mLGW-YYZ
8/6Sat
multi-stop
12h 10mYYZ-LGW
£426
30/5Thu
directAir Canada
7h 05mLHR-YUL
1/8Thu
directAir Canada
6h 40mYUL-LHR
£435
2/6Sun
multi-stopFinnair
11h 34mLGW-YYZ
9/6Sun
multi-stopFinnair
21h 35mYYZ-LGW
£444
30/5Thu
directLufthansa
7h 05mLHR-YUL
21/7Sun
directLufthansa
6h 40mYUL-LHR
£512
29/5Wed
multi-stopFinnair
14h 20mLHR-YYZ
9/6Sun
directFinnair
7h 10mYYZ-LHR
£520
2/6Sun
multi-stopBritish Airways
11h 24mLHR-YYZ
9/6Sun
directBritish Airways
7h 10mYYZ-LHR
£533
30/5Thu
directLufthansa
7h 55mLHR-YYZ
12/6Wed
directLufthansa
7h 10mYYZ-LHR
£540
30/5Thu
multi-stopBritish Airways
12h 55mLGW-YYZ
1/6Sat
multi-stopBritish Airways
33h 40mYYZ-LGW
£558
1/6Sat
multi-stopSWISS
47h 50mLGW-YYZ
16/6Sun
multi-stopSWISS
20h 30mYYZ-LGW
£560
30/5Thu
multi-stopSWISS
27h 31mLHR-YYZ
10/6Mon
multi-stopSWISS
19h 50mYYZ-LHR
£591

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