£268 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 14/6. 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
1 adult, Economy, 0 bags

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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£374
Ottawa
Ottawa1 stop£476
Windsor
Windsor2 stops£453
Thunder Bay
Thunder Bay1 stop£437
London
London2 stops£426
Toronto
Torontodirect£374
Ottawa
Ottawa1 stop£476
Windsor
Windsor2 stops£453
Thunder Bay
Thunder Bay1 stop£437
London
London2 stops£426

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

Sat, 25 Apr - Mon, 4 May
Delta Logo
17:45 - 20:35
LHR
-
YYZ
7h 50mdirect
Delta Logo
23:05 - 11:10
YYZ
-
LHR
7h 05mdirect
£374Delta
Wed, 14 Jan - Wed, 21 Jan
SWISS Logo
09:00 - 17:55
LHR
-
YTZ
13h 55m2 stops
SWISS Logo
12:30 - 11:15
YTZ
-
LHR
17h 45m2 stops
£374SWISS
Fri, 12 Jun - Thu, 25 Jun
Air Canada Logo
08:30 - 11:15
LHR
-
YYZ
7h 45mdirect
Air Canada Logo
18:35 - 06:35
YYZ
-
LHR
7h 00mdirect
£375Air Canada
Wed, 7 Jan - Fri, 16 Jan
Air Canada Logo
16:20 - 06:31
LHR
-
YYZ
19h 11m2 stops
Air Canada Logo
23:00 - 11:20
YYZ
-
LHR
7h 20mdirect
£376Air Canada
Mon, 20 Apr - Mon, 4 May
Air Transat Logo
12:40 - 16:00
LGW
-
YYZ
8h 20mdirect
Air Transat Logo
22:45 - 10:45
YYZ
-
LGW
7h 00mdirect
£376Air Transat
Tue, 10 Feb - Tue, 17 Feb
Virgin Atlantic Logo
10:00 - 15:40
LCY
-
YYZ
10h 40m1 stop
Virgin Atlantic Logo
17:50 - 08:10
YYZ
-
LCY
9h 20m1 stop
£376Virgin Atlantic
Thu, 15 Jan - Tue, 3 Feb
Lufthansa Logo
09:40 - 16:15
LCY
-
YYZ
11h 35m1 stop
Lufthansa Logo
16:50 - 09:15
YYZ
-
LCY
11h 25m1 stop
£377Lufthansa
Mon, 26 Jan - Mon, 2 Feb
Air Transat Logo
11:40 - 15:00
LGW
-
YYZ
8h 20mdirect
Air Transat Logo
21:35 - 09:45
YYZ
-
LGW
7h 10mdirect
£379Air Transat
Sat, 17 Jan - Fri, 23 Jan
Lufthansa Logo
09:30 - 16:15
LHR
-
YYZ
11h 45m1 stop
Lufthansa Logo
14:00 - 10:45
YYZ
-
LHR
15h 45m2 stops
£379Lufthansa
Tue, 27 Jan - Tue, 3 Feb
Virgin Atlantic Logo
10:00 - 15:40
LCY
-
YYZ
10h 40m1 stop
Virgin Atlantic Logo
17:50 - 09:30
YYZ
-
LCY
10h 40m1 stop
£381Virgin Atlantic
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.

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 £351 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 £351.

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 £544, 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 £555 and £519 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 4 weeks before departure, which saves you about 19% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Good to know - Cheap tickets from London to Ontario

Low seasonNovember
Cheapest flight£268
Best time to beat the crowds (6% less expensive on average)
Most popular time to fly (19% more expensive on average)
Flight from London Stansted 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.

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

    The cheapest time of day to fly to Ontario is generally in the afternoon, when retur flights cost £482 on average. Morning departures are around 5% 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 £530.

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 485 reviews
8.4Crew
6.8Food
7.3Comfort
7.1Entertainment
7.9Boarding
Airline reviews

Onward flight was okay. return from Lisbon was poor as we missed our flight due to a long line at the passport control. Air Transat made no effort to accommodate us even though we were at the passport control 40 minutes prior to the departure.

6.0 GoodAnonymous, Nov 2025
LIS - YUL
Read more Air Transat reviews

Onward flight was okay. return from Lisbon was poor as we missed our flight due to a long line at the passport control. Air Transat made no effort to accommodate us even though we were at the passport control 40 minutes prior to the departure.

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

It was very good but no tv but the experience was great

Thank you for making my first experience very enjoyable. You made it all very pleasant

Great flight great seats will absolutely fly with you again

Porter airlines was good. I didn't have the best experience when booking through airfare assist however, as I got no final confirmation from them that the flight was booked until I called them. Even then, the confirmation code they gave me was incorrect and couldn't be used for check in. On a positive note airfare assist was actually picked up the phone relatively quickly when calling

The flight crew were very good, polite, and professional. Unfortunately, the rest of the experience left much to be desired. The food was extremely bland—almost tasteless. We chose the non vegetarian .The lasagna was just plain pasta with a tiny garnish and no seasoning. It felt like eating starch only, The bigger issue was with luggage and space. We boarded with three tickets, and while the seats in front of us were nearly empty, all the overhead compartments had already been filled by passengers boarding to the back. This left us and many others with no overhead storage for our carry-ons. Our bags couldn’t fit well under the seats either, which meant we lost the little legroom we had. The result was a horrible, cramped experience—sore knees, no space to stretch, and no way to rest or sleep comfortably. According to the crew this was a rather normal thing. It is obviously normal that people board with handbag and carry on but they should be only allowed to use their overhead compartment and under their seat not the way it is managed that all the spaces in the front of the plane being occupied by the people sitting way back in the plane.

Nice complete meal included and great services. Plus the plane was very clean.

Everything was horrible. On the day of my departure, I was denied check-in and boarding because my reservation only showed one of my last names, while my passport contains both. This minor discrepancy could have been easily corrected, but I was informed that no adjustment could be made. As a result, I lost not only my outbound flight but also my return flight and had to purchase a new ticket at a significantly higher cost.

This has been the worst experience I’ve ever had. Basically, I lost my round-trip tickets because one of my last names was missing, and you didn’t allow me to correct it. I had to purchase a full ticket again. Once I get home, I will start legal proceedings against you.

Food has been disappointing in both legs of flight to india

Great staff great experience, made a 2 hour delay very bearable

Great staff, great experience, made a 2 hour delay very bearable

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

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

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.

Flight was canceled for a reason they knew hours before but did not mention. Next the gate chnage from 37 to 38 at least 10 times. Ridiculous.

Delay, after delay, after delay. It was hard as an adult travelling alone. I felt bad for the families with young children to entertain for several hours. Agents and crew performed to their usual good standard. Air Canada, never again.

I liked the flight but the check in was horrendous. I have booked with you before but not ever had to pay extra for luggage, it was not clear on booking, I didn't know there was different categories of economy that meant different allowances. So was alarmed when we had to pay a further £120 at the check-in at a point of not changing.

Delayed over 1 hour boarding and on tarmac for no apparent reason. Boarding was awful. Extremely late. No employee knew what they were doing. Loading zones out if order (zone 2 before zone 1).

I would like to review the next flight from Toronto to Fort Myers as it was a disaster!!

I’m a thin guy, but my hips were plastered on either side of the chair. These chairs are so unbelievably small now. It’s miserable flying in them for anything longer than an hour

It was just fine. I managed to make all my connection too sbut had trouble in Munich with no wheel chair and trouble trying to get help from the airport people to get to the other terminal for my flight. Finally a wonderful lady Amelia, helped me to make my flight connection Timon with zero time to spare.

Boarding was slow due to airport security. The flight, staff, service and comfort were excellent. A little more complementary meals for 4 hours + flight will go a long way.

Awful. No running water on the plane. Bathroom extremely grimy, panels taped into place. Breakfast eggs with a terrible texture.

it was hours late with a fake story about the high wind

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.

Missed flight. Requested assistance for my father and he did not receive it in Paris.

Business Class was very comfortable and the food and service was top notch.

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 business class seating arrangement for LHR to MAA was very uncomfortable. The movie options were terrible.

Ohooo it's fantastic 👏 I love it 😀 😍 ❤️ it's on time ⏲️

Very bad. Business class money is paid but service is worst than economy with empty middle seat. Very low grade food, very poor toilet. This should be highlighted as worst business class in the world. Government of Jordan should ban British airways for misleading information.

Great seat in premium economy, great food and drinks throughout lots of in flight entertainment. 1 hour 40 min delayed flying out , 2 1/2 hour wait at passport control in tampa

Even in business class, no 2 members of our family including kids were able to sit together. I booked the tickets months in advance. The all my luggage was left in London and arrived 2 days later. It took hours to report the missing luggage at the airport and 3-4 hours to recover one of the bags from the airport with mind bending amount of paperwork. Worst experience ever, I would seriously reconsider traveling by British Airways again.

Crew attentiveness and service as well as the quality of on board dining could be better. Seats and controls are very dated.

My seat cushion was poor. The cushion was compressed and was uncomfortable for such a long flight.

People were nice. Seats are so cramped my knees had to be pressed into the seat in front of me.

Overall, the food and entertainment were great. The staff were amazing, polite and professional. They did not have WiFi on board on this leg but that was okay. There was a delay in boarding from London and landing at Mumbai airport but the pilot communicate DC the reason for the delayed landing. They even sent us an apology afterwards for the delayed landing.

I was in a bulkhead seat and my tray table wasn't level. Eating was difficult.

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.