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Find cheap flights from London to Ontario from £184

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 29/5. 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
Thu 30/5
Thu 6/6

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Best Ontario Flight Deals

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

Toronto
Hamilton1 stop£303
Ottawa
Ottawa1 stop£484
London
London1 stop£553
Windsor
Windsor2 stops£557
Thunder Bay
Thunder Bay2 stops£817
Timmins
Timmins2 stops£820

Good to know - Cheap tickets from London to Ontario

Low season

January

High season

July

Cheapest flight

£184
Best time to beat the crowds (21% less expensive on average)
Most popular time to fly (18% more expensive on average)
Flight from London Gatwick Airport to Hamilton

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 2% 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 1119 reviews
7.5Food
8.2Crew
8.0Boarding
7.8Comfort
8.0Entertainment
Airline reviews

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...

4.0 OkayAnonymous, Apr 2024LAX - HKG
Read more about Cathay Pacific reviews

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 !

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.

The crew was very attentive and kept busy serving a variety of treats!

Terrible. Missed my flight to final destination because of delayed British Airways flight. Had to spend 12 hours in airport and $1500 for new plane tickets

The crew on board were all very pleasant and happy to help. The flight had the old business class seats. The departure board in the business lounge did not update and kept on saying ' gate open' but never said boarding. When I got nervous about the departure time and walked to the gate I was told off rudely for being late.

Book cheap flights from London to Ontario

Cheapest flights to Ontario from London found in 2024

Recent return flight deals

5/6Wed
1 stop
16h 45mLGW-YHM
11/6Tue
1 stop
13h 15mYHM-LGW
£303
5/6Wed
1 stop
16h 45mLGW-YHM
11/6Tue
1 stop
13h 15mYHM-LGW
£303
25/9Wed
directBritish Airways
7h 50mLHR-YYZ
8/10Tue
directBritish Airways
7h 15mYYZ-LHR
£396
17/6Mon
1 stopLufthansa
18h 05mLHR-YYZ
25/7Thu
1 stopLufthansa
14h 00mYYZ-LHR
£398
17/6Mon
1 stopLufthansa
17h 05mLHR-YYZ
24/7Wed
1 stopLufthansa
10h 30mYYZ-LHR
£399
5/6Wed
2 stopsSWISS
15h 49mLHR-YTZ
11/6Tue
2 stopsSWISS
20h 20mYTZ-LHR
£434
15/5Wed
1 stopSWISS
15h 15mLHR-YYZ
28/5Tue
1 stopSWISS
16h 45mYYZ-LHR
£435
13/5Mon
2 stopsFinnair
25h 50mLGW-YYZ
25/5Sat
2 stopsFinnair
14h 31mYYZ-LGW
£437
30/5Thu
2 stopsFinnair
31h 39mLGW-YYZ
9/6Sun
2 stopsFinnair
32h 12mYYZ-LGW
£444
14/9Sat
1 stopBritish Airways
11h 28mLHR-YYZ
19/9Thu
directBritish Airways
7h 10mYYZ-LHR
£454

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Recent one-way flight deals

29/5Wed
1 stop
16h 45mLGW-YHM
£184
9/9Mon
1 stop
12h 34mLHR-YYZ
£190
10/9Tue
1 stop
12h 29mLHR-YYZ
£192
24/6Mon
1 stopTAP AIR PORTUGAL
23h 05mLHR-YYZ
£245
24/6Mon
1 stopTAP AIR PORTUGAL
24h 10mLHR-YYZ
£255
7/5Tue
2 stopsLufthansa
14h 21mLCY-YYZ
£428
8/5Wed
2 stopsLufthansa
25h 05mLCY-YYZ
£430
5/5Sun
1 stopAir France
13h 35mLHR-YOW
£707
21/5Tue
1 stopAir France
10h 50mLHR-YOW
£1,081
27/7Sat
1 stopVirgin Atlantic
13h 35mLHR-YOW
£1,154

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Last minute flights from London to Ontario

Last minute flight, train and bus deals

3/5Fri
directAir Transat
8h 00mLGW-YYZ
12/5Sun
directAir Transat
7h 00mYYZ-LGW
£347
3/5Fri
directAir Transat
8h 00mLGW-YYZ
14/5Tue
multi-stopAir Transat
9h 20mYYZ-LGW
£351
5/5Sun
multi-stopFinnair
23h 45mLGW-YYZ
19/6Wed
multi-stopFinnair
21h 35mYYZ-LGW
£439
1/5Wed
directLufthansa
7h 55mLHR-YYZ
8/5Wed
directLufthansa
7h 05mYYZ-LHR
£477
2/5Thu
multi-stopFinnair
11h 35mLGW-YYZ
7/5Tue
multi-stopFinnair
14h 25mYYZ-LGW
£481
3/5Fri
multi-stopBritish Airways
11h 25mLHR-YYZ
7/5Tue
directBritish Airways
7h 10mYYZ-LHR
£488
5/5Sun
multi-stopLufthansa
29h 37mLHR-YOW
11/5Sat
multi-stopLufthansa
28h 35mYOW-LHR
£494
4/5Sat
multi-stopBritish Airways
11h 25mLHR-YYZ
26/5Sun
directBritish Airways
7h 10mYYZ-LHR
£497
3/5Fri
multi-stopSWISS
14h 40mLHR-YYZ
6/5Mon
multi-stopSWISS
15h 10mYYZ-LHR
£556
4/5Sat
multi-stopSWISS
17h 36mLHR-YYZ
8/5Wed
multi-stopSWISS
15h 25mYYZ-LHR
£588

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