£267 Find Cheap Flights from London to Ontario – 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 from London to Ontario departing on 4/10. 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.
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1 adult, Economy, 0 bags

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Cheap Flights from London to Ontario

Cheapest return prices found by our users on KAYAK in the last 72 hours
Toronto
Toronto1 stop£404
Ottawa
Ottawa1 stop£397
Windsor
Windsor2 stops£514
London
London2 stops£517
Thunder Bay
Thunder Bay2 stops£506
Toronto
Toronto1 stop£404
Ottawa
Ottawa1 stop£397
Windsor
Windsor2 stops£514
London
London2 stops£517
Thunder Bay
Thunder Bay2 stops£506

Book Cheap London to Ontario Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from London to Ontario 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 return flight deals from London to Ontario

Mon, 9 Nov - Thu, 12 Nov
Lufthansa Logo
06:35 - 14:55
LHR
-
YYZ
13h 20m
1 stop
Lufthansa Logo
20:10 - 08:30
YYZ
-
LHR
7h 20mdirect
£404Lufthansa
Thu, 27 Aug - Thu, 3 Sep
Multiple Airlines Logo
06:30 - 15:00
STN
-
YYZ
13h 30m
2 stops
Multiple Airlines Logo
07:35 - 21:20
YYZ
-
STN
32h 45m
2 stops
£404Multiple Airlines
Sun, 23 Aug - Wed, 9 Sep
Air Transat Logo
09:40 - 16:33
LGW
-
YTZ
11h 53m
1 stop
Air Transat Logo
18:55 - 09:50
YTZ
-
LGW
9h 55m
1 stop
£405Air Transat
Thu, 3 Sep - Wed, 23 Sep
Air Transat Logo
09:40 - 12:45
LGW
-
YYZ
8h 05mdirect
Air Transat Logo
23:15 - 09:50
YYZ
-
LGW
29h 35m
1 stop
£406Air Transat
Tue, 6 Oct - Wed, 14 Oct
Virgin Atlantic Logo
06:30 - 13:20
LHR
-
YYZ
11h 50m
1 stop
Virgin Atlantic Logo
22:55 - 11:10
YYZ
-
LHR
7h 15mdirect
£407Virgin Atlantic
Thu, 10 Sep - Thu, 17 Sep
Virgin Atlantic Logo
17:50 - 20:40
LHR
-
YYZ
7h 50mdirect
Virgin Atlantic Logo
22:55 - 11:10
YYZ
-
LHR
7h 15mdirect
£408Virgin Atlantic
Thu, 27 Aug - Thu, 10 Sep
British Airways Logo
08:50 - 15:50
LHR
-
YYZ
12h 00m
1 stop
British Airways Logo
18:05 - 06:15
YYZ
-
LHR
7h 10mdirect
£409British Airways
Thu, 27 Aug - Wed, 9 Sep
British Airways Logo
08:50 - 15:50
LHR
-
YYZ
12h 00m
1 stop
British Airways Logo
22:00 - 10:15
YYZ
-
LHR
7h 15mdirect
£410British Airways
Mon, 31 Aug - Wed, 30 Sep
Air Canada Logo
08:40 - 21:31
LHR
-
YTZ
17h 51m
2 stops
Air Canada Logo
15:35 - 08:35
YTZ
-
LHR
12h 00m
1 stop
£413Air Canada
Fri, 2 Oct - Wed, 21 Oct
Air Canada Logo
14:10 - 20:21
LHR
-
YUL
11h 11m
1 stop
Air Canada Logo
17:30 - 09:35
YUL
-
LHR
11h 05m
1 stop
£413Air Canada
Booking Insights

KAYAK's insights & trends for London to Ontario flights

Get data-powered insights and trends into flights from London to Ontario to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from London to Region of Ontario?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from London to Region of Ontario departing in November.

What is the cheapest London to Ontario flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Ontario from London found in the last 5 days was to Ottawa, at £366 return. The most popular route is from London Heathrow Airport (LHR) to Toronto Pearson Intl Airport (YYZ), and the cheapest return airline ticket found on this route in the last 5 days was £406.

What is the cheapest time of day to fly to Ontario?

The average price for all round-trip flights from London to Ontario depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Ontario is generally in the afternoon, when retur flights cost £538 on average. Morning departures are around 6% cheaper than evening flights, on average. The most expensive time of day to fly to Ontario is generally in the evening, which is peak travel time and where the average cost of a ticket is £590.

Can I save money by flying with a stopover from London to Ontario?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of £508, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from London to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London to Ontario is February, when tickets cost £395 (return) on average. On the other hand, the most expensive months are August and July, when the average cost of return tickets is £606 and £594 respectively.

What’s the cheapest day of the week to fly from London to Ontario?

The average price of all round-trip flights from London to Ontario clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Ontario on a Friday and more expensive on a Sunday. On your return trip to London, you should consider flying back on a Wednesday, and avoid Saturdays for better deals.

How far in advance should I book a flight from London to Ontario?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from London to Ontario, you should book around 2 weeks before departure, which saves you about 9% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Good to know - Cheap tickets from London to Ontario

Low seasonJanuary
Cheapest flight£267
Best time to beat the crowds (20% less expensive on average)
Most popular time to fly (25% more expensive on average)
Flight from London Heathrow Airport to Toronto Pearson Airport

Flights from London to Ontario: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from London to Ontario 
ChristopherFlew with Air Canada
LHR
-
YYZ
Sept 2024
Boarding of the plane is a nightmare, and the gate staff don’t allow sufficient time for each zone to board in order. Get in line ASAP and just start board as soon as they begin letting people on the plane. Also, the self service check in machines won’t print baggage tags (we tried four different machines and none of them would print a baggage tag even though we had done online check in to indicate that we had checked bags).
LydiaFlew with American Airlines
LHR
-
YYZ
Jun 2024
Give yourself enough connection time in London to clear customs even for connecting flights.
Verified travelerFlew with Air Canada
LHR
-
YYZ
May 2024
It is a long walk to the gate so make sure to leave yourself time. We were told 4 hours ahead and we should have taken that advice.

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

Reviews of the top 5 airlines flying from London to Ontario

 
See real verified KAYAK customer reviews for airlines flying from London to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
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
Air TransatOverall score based on 563 reviews
6.8Food
7.3Comfort
7.1Entertainment
8.5Crew
8.0Boarding
Airline reviews

My screen was broken so now movies, etc, but I didn’t really mind. They did work on it, so good effort on their part.

10.0 ExcellentWilliam, Jun 2026
LGW - YYZ
Read more Air Transat reviews

My screen was broken so now movies, etc, but I didn’t really mind. They did work on it, so good effort on their part.

i was not able to take my flight because the information i needed to book my dog correctly was not provided

They never sent me a confirmation to say my flight time had changed so I cut my holiday short by 6 hours Had to pay over 50 American for my luggage to be checked on the way home and that’s more that it cost on the way there. Arbitrarily charging more for the same thing when the passenger has no options is shady The cabin was an icebox going there and back, if all the passengers have their gloves on and their hoods up that should be an obvious sign to turn up the heat

The Turkish was good . I had a problem with air Transat terrible experience for me

Very good. A lot better experience then I expected for an economy flight.

Check in slow even though completed online check in, there was no bag drop available so had to query for 90mins as only 2 staff on desks.

Flying to a far away destination is a miracle in itself, so please take these with a grain of salt. The seats are a bit tired, and need a freshen up. The entertainment could be a bit newer, especially with all services available now. The food really is where we need help. But again, flying is a privilege, so all is good.

Never book through a third party. Book through Air transats website. Terrible process to get help and many issues happen with them and sister companies because half the flights you book with them aren’t even through air transat.

From what I saw there was no entertainment. Similar to my flight to London, I personally would like the attendants to be more interactive during the flight.

Airline Rep at Gatwick condescending and a very poor representative for this airline did request his name but he refused. Will certainty think twice to fly with this airline in future.

Lounge was top notch h with great variety of food and drinks. Cabin crew were great. Smooth flight.

My seat 3G did not go down fully and the buttons were not working properly

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

Premium economy more comfortable than economy, but not by much. Did was awful, do not try the omelette. Flight crew were helpful. Flight was delayed by over an hour. Overall but bad, arrived safely and thank God.

Food was excellent. Service was very good. Staff was very helpful to all passengers.

Your flight delayed at Heathrow n I almost missed my mother funeral.you idiots. I had to waste 10 hours in different airports. Thank your stars I'm not suing you.

Seats were old and dirty, for a long haul flight you expect to be able to recline and for the av to work properly. Choice for vegans was fruit….

The Virgin Atlantic crew was very good. However, the equipment was OK, the seats were OK, but her bags did not arrive with me. Two bags showed up a day later and I’m still waiting for my third back.

great flights both ways on time both ways.staff(ladies) where great at check-in.

Was disappointed when landing in Canada was made to wait for over 1 hour with several other parents and babies for our strollers . The expectation was that the gate checked strollers would be there when exiting aircraft. This was not the case we were told to walk to a point and wait for them . After being left there and not being updated we were met with very hostile and rude air canada staff . There where no apologies or understanding even though all the children where very uncomfortable and the parents very frustrated as you can imagine . Instead the air canada staff at the airport where very rude and made an already frustrating situation much worse instead of trying to assure the parents that that were making effort to fix the situation. One gentleman in particular was very rude to some parents telling them to move when they were simply seeking information. He made the other parents including myself feel very uncomfortable. He also told a gentleman he was capturing images of everyones boarding pass when this was untrue as he was only taking a photo of the gentleman pass which was strange.

I wish they gave the earphones earlier rather than when we are already in flight.

We were a little late pushing back ,but arrived a head of time.

The 787 Dreamliner that we flew on was relatively new and a nice aircraft. We flew on a 777 which was noticeably older and the seats were average” but the 787 was very nice, especially for the price. No window blinds anymore, instead high tech adjustable polychromatic glass!! Nice.

an absolute disaster and nightmare on air condition. IT WAS FREEZING!! everyone around us had hats, hoodies, gloves outdoor jackets on. that segment of the aircraft had a fault I assume...no amount of suggestion to turn down the air con helped. otherwise all good.

Everything was very good, short delay Toronto to Regina on my return to Canada but not a big deal. Thanks Kayak, Dr. Ian Stewart

Boarded smoothly, took off on time. Entertainment screens were reliable and the movie library is abundant. Food better than wtst was served on the first leg of the journey by another airline.

It was ok. Even after the airport bus took us to the terminal , we did not expect to walk 35 mins inside the airport to the gate . A 15 min walk is ok . Especially if there was any delay in TSA check which happens to is too then people can easily miss the flight.

Always have no issues with air canada great staff and food just all around good air line my luggage however was 5 hours late and on another flight and I requested a wheel chair because of arthritis in my lower back and fake hip walking the distance in airport killed me no one showed up for me with requested wheel chair but ....in life stuff happens ..... still a good airline and good people

Flight map did not work. Crew was great, food was good, plane took off on time and landed early. That's all I can ask.

Paid for exit row at the back of the plane. Window seat with lots of leg space. Food was inedible (as usual). Brought my own.

The flight was delayed by an hour. Made the connection uncomfortably tight.

Not what I expected for the last leg of a $5100 business class experience. Boarding was a nightmare. The flight was delayed and I had to keep checking my email to ensure I was at the right gate since the airline or the terminal had no clue until 15 mins prior to boarding. Food was gross, limited drink options.

Flights scheduled with impossible connections - Lufthansa apparently believes it takes 7mins to change terminals, go through passport control, re-clear security and walk 1.8kms…..and everything will work perfectly (which it never does at Frankfurt). No staff on hand to assist with transfers on delayed flights. No transfer guidance provided by app. No compensation offered for 6hr delay to connecting flight.

Crew were friendly and very helpful Plane was clean and the legroom is standard. Overall a good flight, no complaints.

Tiny, cramped seats with minimum leg room and hard armrests. Basic needs like a seat and luggage came with an additional charge. Budget airline amenities with premium airlune cost. I won't use this airline again.

I'm Canaadian. I hate Air Canada. I used to give them a pass on their international service. No longer, They suck across the board now! Old planes, exhausted staff bad food and shitty entertainment. Your seats need reupholstered! Start with that...

Great flight. Left on time, not very crowded. Quiet and the right temperature.

I paid a lot of money for seat selection and was miserable for flight duration

Horrible experience. They broke the handle of my checked in suitcase and then refused pay for damages

A great flight. The crew was excellent too. Of particular note of excellence was the gluten-free meal which was one of the best offerings I’ve ever had on a plane. Outstanding work, BA chefs.

I had a great experience on this flight! The crew was extremely helpful and attentive. Seats are very comfortable and the in flight entertainment was excellent.

The onboard service was fantastic, really in a class of its own

Everything was fine except not posting the gate number until 14 minutes before boarding. In an airport the size of Heathrow, that was unacceptable.

Better and more attentive crew and more food options. Leg space is very tight.

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.

A heated chicken pie as a snack was terrible and could not be eaten. It should never be served. The crew took a long time in cleaning up after meals

premium economy was comfortable. Service was nice and crew were pleasant. However, mid flight the bathroom was not clean. It would be nice if people learned to clean up after themselves.

It was one of our best flight experiences. The crew was fantastic, the service was top notch with a genuine smile on everyone’s face. Would highly recommend British Airways.

Everything you need to know for your flight from London to Ontario

Cabin class types available on flights to Ontario

Cabin classes available on flights to Ontario. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.