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Find cheap flights from London Heathrow Airport to Ontario from C$ 339

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Ontario departing on 22/5. 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
Tue 4/6
Tue 11/6

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Best Ontario Flight Deals

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

Ottawa
Ottawa2 stopsC$ 859
Windsor
Windsor1 stopC$ 965

Good to know

Low season

January

High season

July

Cheapest flight

C$ 339
Best time to beat the crowds (17% less expensive on average)
Most popular time to fly (22% more expensive on average)
Flight from London Heathrow Airport to Toronto

FAQs - booking Ontario flights

  • How does KAYAK find such low prices on flights from London Heathrow Airport 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 Heathrow Airport to Ontario.

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

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

  • What is the Hacker Fare option on flights from London Heathrow Airport 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 Heathrow Airport with another airline.

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

  • Looking for a cheap flight? 25% of our users found tickets from London Heathrow Airport to the following destinations at these prices or less: Toronto C$ 873 one-way - C$ 809 round-trip
  • Morning departure is around 10% 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 3 airlines serving from Heathrow to Ontario

 
Need help choosing which airline to fly with from Heathrow 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 1107 reviews
8.2Crew
7.8Comfort
8.0Boarding
7.5Food
7.9Entertainment
Airline reviews

The overall flight went well and the aircrew was pleasant.

8.0 ExcellentPeter, Apr. 2024BOS - HKG
Read more about Cathay Pacific reviews

The overall flight went well and the aircrew was pleasant.

Excellent. Planes are a little older and could get some refurbishment, but besides that everything was excellent.

The boarding experience was as expected and went well. The plane's economy seating plan is not designed for a positive customer experience but rather for company profit. When the passenger in front of me reclined, the distance from the screen to my face was the span of my hand (thumb tip to pinky fingertip). There is no such thing as personal space in this setting. This results in the domino effect, for when I recline the person in back of me reclines and so it goes. This is not to say that reclining is the answer as the experience is not increased, but simply managed.

Crew experience was more transnational, seats were so close together (LtoR and FtoB) that it was difficult to enjoy much of anything. When the person in front leaned back, there is no space for me. Sadly it was a flight to be endured not experienced.

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.

Very poor check-in experience, and flight meal service was very disappointing with no drinks service or hot meal.

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

Everything went smooth. All flights were on time No changing gates, . No changing flights . It was like a completely different airlines tha n the last time I used Cathay Pacific . The last flight, 2 months ago, I had before this one was from Philippines also . I got changed in Manila and was told it only added 2 hours onto my flight . My 20 hour return trip ended up being 30 hours return with a 10.0 hour layover in New York with no seats anywhere . Everyone was sleeping or sitting on the floor . Unlike the hotel I was given in Manila to wait for this flight home . I never thought I would use Cathay Pacific again . But I did and this time you were great! I should have complained about the flight and layover from Hell a couple months ago. Consider that I am complaining about that august/23 flight now . Thank you got the great flying experience on my way home from philippines .

Everything was good food could be better but ok for economy on my 2nd flight the head ph jack are bad you have to hold pushed in to hear anything but other then that very nice service

Cathay much better than other options Imigration was a total mess on arrival in KL but not Cathay s fault

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 flight was delayed as they were waiting on catering. Catering. Was eventually delivered but they still had no food. No meals for us in business class - just a bag of nuts.

Our luggage is missing. We are at the Hotel Gran Via in Barcelona

my original flight was cancelled the previous day, and i was rescheduled onto this flight, which left much earlier in the morning, impacting my previous evening and requiring me to get up much earlier in the morning to get to the airport online. This practice happens way way way too much, and it seems on every airline, though AA is probably the worst.

The flight was on time and the crew very professional. Everything went as expected and I will use BA again for this trip.

We paid to have overhead carry-on baggage. When we got to the gate we were told that our carry on bags would need to be checked and go below because the flight was full. Notably we were nowhere near the last people to board and about 30 other passengers also had to check their carry-on bags. Other than that the flight was fine.

Very bad plain although I paid A business class ticket I was stuck in a stiff fixed seat without any entertainment or Wi Fi for 5 hours I will never ever book a flight on British airline.

Self check in Kiosk did not recognize that I had prepaid for my luggage. This caused a 40 minute delay even though I had my British Airways email receipt for the prepaid luggage.

Crew were very friendly and helpful. They explained to us in detail the delay in our takeoff due to the storm that rolled in from Belfast and did their best to make up the time. Always great to fly BA!

Staff were very helpful. The free WiFi for messages was also very useful to keep in touch

Crew was more interested on looking at their phones than welcoming passengers during boarding.

Book cheap flights from London to Ontario

Recent round-trip flight deals

9/10Wed
1 stopTAP AIR PORTUGAL
12h 15mLHR-YYZ
23/10Wed
1 stopTAP AIR PORTUGAL
14h 05mYYZ-LHR
C$ 614
26/8Mon
2 stopsAir Canada
14h 59mLHR-YTZ
2/9Mon
2 stopsAir Canada
21h 40mYTZ-LHR
C$ 636
22/5Wed
1 stop
12h 55mLHR-YYZ
26/5Sun
1 stop
17h 30mYYZ-LHR
C$ 638
10/6Mon
1 stop
17h 05mLHR-YYZ
20/6Thu
1 stop
9h 15mYYZ-LHR
C$ 645
23/9Mon
directBritish Airways
7h 50mLHR-YYZ
7/10Mon
directBritish Airways
7h 15mYYZ-LHR
C$ 690
3/7Wed
1 stopLufthansa
14h 25mLHR-YYZ
15/7Mon
1 stopLufthansa
12h 00mYYZ-LHR
C$ 694
14/5Tue
2 stopsLufthansa
15h 06mLHR-YYZ
21/5Tue
1 stopLufthansa
9h 00mYYZ-LHR
C$ 710
16/5Thu
1 stopScandinavian Airlines
13h 50mLHR-YYZ
20/5Mon
1 stopScandinavian Airlines
23h 20mYYZ-LHR
C$ 713
19/9Thu
directBritish Airways
7h 50mLHR-YYZ
2/10Wed
directBritish Airways
7h 15mYYZ-LHR
C$ 742
29/5Wed
1 stopScandinavian Airlines
13h 50mLHR-YYZ
8/6Sat
2 stopsScandinavian Airlines
18h 25mYYZ-LHR
C$ 779

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Recent one-way flight deals

22/5Wed
1 stop
23h 04mLHR-YYZ
C$ 339
12/6Wed
1 stop
12h 39mLHR-YYZ
C$ 346
12/6Wed
2 stops
27h 30mLHR-YYZ
C$ 368
24/9Tue
1 stopTAP AIR PORTUGAL
24h 10mLHR-YYZ
C$ 434
3/9Tue
1 stopTAP AIR PORTUGAL
23h 05mLHR-YYZ
C$ 450
12/6Wed
2 stopsWestJet
27h 49mLHR-YYZ
C$ 591
31/5Fri
directLufthansa
7h 55mLHR-YYZ
C$ 608
29/6Sat
1 stopIcelandair
29h 30mLHR-YYZ
C$ 613
12/6Wed
1 stopWestJet
32h 05mLHR-YHM
C$ 766
15/5Wed
1 stopLufthansa
10h 19mLHR-YTZ
C$ 813

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Last minute flights from Heathrow to Ontario

Last minute flight, train and bus deals

8/5Wed
multi-stopAir Canada
12h 55mLHR-YYZ
14/5Tue
directAir Canada
7h 10mYYZ-LHR
C$ 755
10/5Fri
multi-stopAir Canada
12h 06mLHR-YYZ
20/5Mon
directAir Canada
7h 10mYYZ-LHR
C$ 757
8/5Wed
multi-stop
16h 00mLHR-YHM
15/5Wed
multi-stop
19h 25mYHM-LHR
C$ 764
6/5Mon
multi-stopKLM
13h 10mLHR-YYZ
18/5Sat
multi-stopKLM
9h 55mYYZ-LHR
C$ 781
9/5Thu
multi-stopScandinavian Airlines
24h 00mLHR-YYZ
20/5Mon
multi-stopScandinavian Airlines
21h 55mYYZ-LHR
C$ 784
10/5Fri
multi-stopLufthansa
11h 50mLHR-YYZ
22/5Wed
directLufthansa
7h 05mYYZ-LHR
C$ 787
10/5Fri
direct
7h 55mLHR-YYZ
24/5Fri
direct
7h 10mYYZ-LHR
C$ 792
6/5Mon
multi-stopLufthansa
10h 19mLHR-YTZ
9/5Thu
multi-stopLufthansa
16h 40mYTZ-LHR
C$ 809
9/5Thu
multi-stopScandinavian Airlines
24h 00mLHR-YYZ
18/5Sat
multi-stopScandinavian Airlines
16h 35mYYZ-LHR
C$ 833
6/5Mon
multi-stopKLM
13h 20mLHR-YOW
20/10Sun
multi-stopKLM
12h 45mYOW-LHR
C$ 1,292

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London Heathrow Airport - Ontario Flights

Departure:

London Heathrow Airport (LHR)United Kingdom

Return flight deals:

Ontario - London Heathrow Airport

Cabin classes:

C$ 3,997
C$ 3,277
C$ 732