C$ 347 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 11/3. 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

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, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Ontario, as well as popular online travel agencies
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Flight Deals

Best Ontario Flight Deals from London

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Toronto
TorontodirectC$ 605
Ottawa
Ottawa1 stopC$ 766
Toronto
TorontodirectC$ 605
Ottawa
Ottawa1 stopC$ 766

Cheap Flights from London to Ontario

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

Mon, 27 Apr - Thu, 21 May
Air Transat Logo
12:40 p.m. - 4:00 p.m.
LGW
-
YYZ
8h 20mdirect
Air Transat Logo
7:50 p.m. - 7:55 a.m.
YYZ
-
LGW
7h 05mdirect
C$ 605Air Transat
Sun, 8 Mar - Sun, 15 Mar
Air Transat Logo
11:40 a.m. - 4:00 p.m.
LGW
-
YYZ
8h 20mdirect
Air Transat Logo
10:35 p.m. - 9:45 a.m.
YYZ
-
LGW
7h 10mdirect
C$ 607Air Transat
Fri, 1 May - Tue, 5 May
Icelandair Logo
3:40 p.m. - 10:05 p.m.
LGW
-
YYZ
11h 25m
1 stop
Icelandair Logo
8:45 p.m. - 2:40 p.m.
YYZ
-
LGW
12h 55m
1 stop
C$ 608Icelandair
Tue, 5 May - Tue, 12 May
Icelandair Logo
1:00 p.m. - 7:10 p.m.
LGW
-
YYZ
11h 10m
1 stop
Icelandair Logo
11:10 p.m. - 2:40 p.m.
YYZ
-
LGW
10h 30m
1 stop
C$ 609Icelandair
Fri, 8 May - Fri, 15 May
Air Transat Logo
11:35 a.m. - 7:20 p.m.
LGW
-
YTZ
12h 45m
1 stop
Air Transat Logo
4:55 p.m. - 7:55 a.m.
YTZ
-
LGW
10h 00m
1 stop
C$ 611Air Transat
Tue, 19 May - Sun, 24 May
Icelandair Logo
3:40 p.m. - 10:05 p.m.
LGW
-
YYZ
11h 25m
1 stop
Icelandair Logo
11:10 p.m. - 2:40 p.m.
YYZ
-
LGW
10h 30m
1 stop
C$ 611Icelandair
Tue, 12 May - Sun, 24 May
Icelandair Logo
1:00 p.m. - 7:10 p.m.
LGW
-
YYZ
11h 10m
1 stop
Icelandair Logo
11:10 p.m. - 2:40 p.m.
YYZ
-
LGW
10h 30m
1 stop
C$ 612Icelandair
Mon, 9 Feb - Wed, 18 Feb
Air Transat Logo
11:40 a.m. - 3:00 p.m.
LGW
-
YYZ
8h 20mdirect
Air Transat Logo
9:35 p.m. - 9:45 a.m.
YYZ
-
LGW
7h 10mdirect
C$ 614Air Transat
Thu, 19 Feb - Thu, 26 Feb
Air Transat Logo
11:40 a.m. - 3:00 p.m.
LGW
-
YYZ
8h 20mdirect
Air Transat Logo
9:35 p.m. - 9:45 a.m.
YYZ
-
LGW
7h 10mdirect
C$ 615Air Transat
Thu, 19 Feb - Thu, 26 Feb
Multiple Airlines Logo
11:40 a.m. - 12:39 a.m.
LGW
-
YOW
17h 59m
1 stop
Multiple Airlines Logo
5:40 a.m. - 9:45 a.m.
YOW
-
LGW
23h 05m
1 stop
C$ 788Multiple Airlines
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 Gatwick Airport 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 Gatwick Airport found in the last 72 hours was to Toronto, at C$ 638 round-trip. The most popular route is from London Gatwick Airport (LGW) to Toronto Pearson Intl Airport (YYZ), and the cheapest round-trip airline ticket found on this route in the last 72 hours was C$ 638.

Can I save money by flying with a layover from London Gatwick Airport to Ontario?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of C$ 855, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Gatwick Airport 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 Gatwick Airport to Ontario is November, when tickets cost C$ 609 (return) on average. On the other hand, the most expensive months are August and July, when the average cost of round-trip tickets is C$ 970 and C$ 963 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 Gatwick Airport 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 Sunday, and avoid Fridays for better deals.

How far in advance should I book a flight from London Gatwick Airport 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 Gatwick Airport 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 Gatwick Airport to Ontario, you should book around 3 weeks before departure, which saves you about 15% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flightC$ 347
Best time to beat the crowds (8% less expensive on average)
Most popular time to fly (45% more expensive on average)
Flight from London Gatwick Airport to Ottawa

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 round-trip 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 morning, when round-trip flights cost C$ 856 on average. The most expensive time of day to fly to Ontario is generally in the morning, which is peak travel time and where the average cost of a ticket is C$ 856.

Top tips for finding cheap flights to Ontario

  • Looking for a cheap flight? 25% of our users found tickets from London to the following destinations at these prices or less: Toronto C$ 497 one-way - C$ 684 round-trip

Reviews of the top airline 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 501 reviews
6.7Food
7.0Entertainment
8.4Crew
7.9Boarding
7.3Comfort
Airline reviews

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

2.0 MediocreAnonymous, Jan 2026
IST - YYZ
Read more Air Transat reviews

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

I did not like I have been charged for my carry on

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 you need to know for your flight from London to Ontario

Information on your arrival and departure airports