£220 Find Cheap Flights from London to Ontario

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
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Ontario.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Ontario.
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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
Torontodirect£357
Ottawa
Ottawa1 stop£471
Windsor
Windsor1 stop£511
Thunder Bay
Thunder Bay3 stops£466
London
London2 stops£530
Toronto
Torontodirect£357
Ottawa
Ottawa1 stop£471
Windsor
Windsor1 stop£511
Thunder Bay
Thunder Bay3 stops£466
London
London2 stops£530

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

Thu, 25 Sep - Thu, 2 Oct
Virgin Atlantic Logo
17:50 - 20:40LHR-YYZ
7h 50mdirect
Virgin Atlantic Logo
22:30 - 10:40YYZ-LHR
7h 10mdirect
£357Virgin Atlantic
Find Deal
Tue, 14 Oct - Sat, 18 Oct
Air Transat Logo
11:35 - 18:10LGW-YTZ
11h 35m1 stop
Air Transat Logo
08:50 - 09:50YTZ-LGW
20h 00m1 stop
£357Air Transat
Find Deal
Wed, 15 Oct - Sun, 19 Oct
Air Canada Logo
06:50 - 14:45LHR-YTZ
12h 55m2 stops
Air Canada Logo
16:10 - 09:35YTZ-LHR
12h 25m2 stops
£358Air Canada
Find Deal
Tue, 11 Nov - Sat, 22 Nov
Lufthansa Logo
09:30 - 16:15LHR-YYZ
11h 45m1 stop
Lufthansa Logo
17:00 - 07:10YYZ-LHR
9h 10m1 stop
£358Lufthansa
Find Deal
Sun, 12 Oct - Thu, 13 Nov
Air Canada Logo
15:50 - 18:45LHR-YYZ
7h 55mdirect
Air Canada Logo
06:15 - 20:35YYZ-LHR
9h 20m1 stop
£358Air Canada
Find Deal
Tue, 11 Nov - Sat, 22 Nov
Lufthansa Logo
06:30 - 13:05LHR-YYZ
11h 35m1 stop
Lufthansa Logo
17:00 - 07:10YYZ-LHR
9h 10m1 stop
£360Lufthansa
Find Deal
Fri, 31 Oct - Wed, 5 Nov
British Airways Logo
16:10 - 19:45LHR-YUL
7h 35mdirect
British Airways Logo
20:40 - 08:30YUL-LHR
6h 50mdirect
£361British Airways
Find Deal
Tue, 4 Nov - Wed, 19 Nov
British Airways Logo
16:10 - 18:45LHR-YUL
7h 35mdirect
British Airways Logo
20:40 - 08:30YUL-LHR
6h 50mdirect
£362British Airways
Find Deal
Sat, 8 Nov - Fri, 21 Nov
Icelandair Logo
11:55 - 18:15LGW-YYZ
11h 20m1 stop
Icelandair Logo
19:40 - 10:55YYZ-LGW
10h 15m1 stop
£362Icelandair
Find Deal
Sat, 8 Nov - Sun, 23 Nov
Icelandair Logo
12:15 - 18:15LHR-YYZ
11h 00m1 stop
Icelandair Logo
19:40 - 10:50YYZ-LHR
10h 10m1 stop
£386Icelandair
Find Deal
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?

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 72 hours was to Toronto, at £305 return. The most popular route is from London Heathrow Airport (LHR) to Toronto Pearson Intl Airport (YYZ), and the cheapest round-trip airline ticket found on this route in the last 72 hours was £350.

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 £1,278, 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 £361 (return) on average. On the other hand, the most expensive months are December and August, when the average cost of return tickets is £536 and £526 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 Thursday and more expensive on a Monday. 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 5 weeks before departure, which saves you about 16% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know - Cheap tickets from London to Ontario

Low seasonJanuary
Cheapest flight£220
Best time to beat the crowds (7% less expensive on average)
Most popular time to fly (23% more expensive on average)
Flight from London Gatwick Airport to Montreal

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 CanadaLHR-YYZSept 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 AirlinesLHR-YYZJun 2024
Give yourself enough connection time in London to clear customs even for connecting flights.
Verified travelerFlew with Air CanadaLHR-YYZMay 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.

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

    The cheapest time of day to fly to Ontario is generally at night, when retur flights cost £651 on average. Morning departures are around 2% 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 £697.

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.
7.7
Air TransatOverall score based on 430 reviews
7.9Boarding
7.3Comfort
8.5Crew
6.7Food
7.0Entertainment
Airline reviews

It’s ok just the boarding point is far too far

8.0 ExcellentAnonymous, Aug 2025YYZ - YYT
Read more Air Transat reviews

It’s ok just the boarding point is far too far

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.

Not so much porter it's your site! Not good

They are a sister company with Air Transat and the two companies do not work well together. If you have any issues the two companies will blame each other and you will miss your flights. The help line does not help

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.

The plane was pretty full, and we dis not have any includes meal for our 4h30 flight? And on-board entertainment wasn't available, there was no TV or plugging to charger your device on the plane. They told us to download an app if we wanted to watch movies but it never connected, that was a disappointment, the r we st was very good though and the crew were really nice!

Seats were very tight especially for first leg of trip.

Not necessarily a Transat issue but it took 2 hours to go through immigration. Tried to reach out to Transat for resolution but was unable to reach an agent.

The flight was excellent, once it started, however we were delayed two hours when the first plane’s engines wouldn’t start. They found another identical plane and transferred us and our luggage in under two hours and made up almost an hour in the air.

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.

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

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

Great crew - old style upper class seats on the older fleet now feels dated

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.

The crew was excellent as ever on Virgin. The special meal was poor unfortunately. More significantly when we arrived at Manchester Airport there was no air bridge provided and we had to exit the plane down a rickety stair case. This is unacceptable for a transatlantic flight. Whilst I understand that this is the airport’s fault at the end of the day the airline is responsible for our transportation and needs to do something.

Super friendly and helpful staff, from check-in desk to cabin crew.

Following a paid seat upgrade for enhanced comfort, I encountered an unacceptable odor in my assigned area. It took three hours for the crew to relocate me, and the replacement seat was unacceptably close to the lavatory, offering no improvement.

Good overall. Cannot fault the airlines. I have had better entertainment systems before ie ice in Emirates but it was not too bad. Food was decent and staff were friendly.

Air Canada decided to go on strike less then 24 hours before our travel and we had to cancel finding flights elsewhere.

This was the end of our honeymoon and our connecting flight to Philly was canceled while we were in our layover due to “maintenance”. Filing a claim to get compensation but would not fly Air Canada again.

I found the boarding easy and my seat was very comfortable as I had a lot of leg room. I am not too happy that I no longer have lounge access even though I used to get it with my TD credit card.

Flight cancelled. Major disruption to our travel. Do not use Air Canada from KC. To few flights.

There labor disputes cancelled my flight less than 24 hours before my boarding time but there customer service/website was easy enough to navigate and they rebooked me for no upcharge.

Re luggage I carried a backpack only. I did not check any bags in. However there were other passengers with carry on luggage going in the plane. My question is why are others allowed to have a carry on luggage inside the plane? Shouldn’t they have dropped it off at the gate? I’m asking because I could have brought the same thing instead of a backpack only. Please clarify for future reference. Thank you.

Like the service. Very hard to communicate or contact when have problems

W ended up getting stuck in Edinburgh Scotland during the air strike. They cancelled our flight and No help to get us rebooked. All said down that cost us over $2,000 extra at least to get home. Hopefully we will be reimbursed somehow! Won’t be flying Air Canada again

What a silly survey to send - all AC flights were cancelled due to the strike so of course we did not fly yesterday

The WiFi was down the whole flight, a flight that had no on board of any kind

The crew was very nice. The equipment on the 747 felt old.

As expected. Would have appreciated a 3-day headsup reminder as a reassurance that all is well.

Poor food on flight between Toronto and Stockholm Airport Toronto too crowded

The plane was late (as was my flight out from Birmingham the day before)

Business Class Configuration was excellent- private and comfortable. Crew and service were excellent. I really appreciate Air Canada cabin pressurization equal to an altitude of 8,000ft. Upon landing, I felt more alert and refreshed than typical for international flights

Hard to use tables and TV screens interfere with the enjoyment of flight experience. Other than that it was a smooth and comfortable ride and we were well taken care of.

Excellent flight overall. Lufthansa Business service was excellent with great cabin crew and very good food and wines. The seat comfort was excellent. Only a slight reduction in score due to the 747-400 being a relatively loud aircraft these days.

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

When we went to the lounge they told us to go into the main lounge and not the full business class section, later they told me that Lufthansa wont pay the full fee to alloq the business class passengers entry to the nicer sectikn where all the other airlines nusiness class passengers go into. Very poor arrangement.

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.

We had a pretty good experience. Enjoyed both the flights. Crew was very good and helpful.

The flight was very delayed in taking off - which was out of control of the crew, but then the pilot worked hard so we only arrived about 30 minutes late. Everyone was very friendly and accommodating!

They issued seat assignments and sat my 2 year-old in the row behind me, separate from me and my daughter. Communication/ customer service was terrible. They told me to change it in London, then in London, they told me to talk to the cabin crew, then a supervisor came and stuck us in the back of the plane when we were supposed to be in row 25. Overall, they need to really work on their customer service. Additionally the food was terrible and they ran out of meals and didn’t have any kid options. To top it off there was no in-flight entertainment for the first hour of the trip.

We missed the connection because we had to wait for a shuttle from the plane to the Terminal. Also, we needed assistance and none was available.

When we arrived at the airport - 1st step - printing out your boarding pass - no issue. Not long lines as these machines. 2nd step - processing your bag drop off. There was only one associate there to help 10 kiosks. We had a family in front of us for 20 minutes trying to work on the machine and figure out every step for 4 pieces of luggage. My husband alerted the associate who was able to assist the family. Highly suggest that there are more associates to assist in this process. Besides this issue, security check went very quickly. Our flight was direct to Philadelphia. We had to carry our bags down two flights of steps, then out to the tarmac to a bus, then carry our bags up two flights of stairs to the plane. No one on the flight was expecting that long trek. I could see some people were struggling a bit. All in all - great flight crew, plane was clean and food was great!

The space is tight. Either you sit straight up the whole time, but the minute you relax, your knees hit the back of the seat in front of you. My seat would not recline so I was quite uncomfortable. Didn’t use my tray table bc it was stained and sticky and nasty. I was also seating in one of the last rows and one crew member and people going to the bathroom kept hitting my elbow resting on the armrest.

Flight was delayed for 2h. Announcements were poor and I was given 1 biscuit and a bottle of water as consolation. Not happy.

There were no gluten-free vegan options available, so food was very limited on this flight, and some of the crew weren’t especially helpful about it. To make matters worse, a passenger was sick on board, and although the area was cleaned, the smell lingered for the rest of the journey. On top of that, we ended up circling for an extra hour, which only made the unpleasant situation drag on even longer.

The crew’s professionalism was top notch and the food and drinks available were excellent. I only ask that we get the refurbished 777’s on the London to Bermuda route that I had for the London to Singapore leg. The updated infotainment system is much better than the older version

Checking in prior on line and wait time at Gatwick was terrible. I would rate a big fat ZERO.

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.

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