C$ 346 Find Cheap Flights from Ontario to London

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to London departing on 13/2. 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 London

Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
C$ 757
Typical prices: C$ 763-C$ 911
Icelandair
Sat 17/1Sun 1/2
YYZ - LHR • 1 stop
Cheapest direct flights
C$ 757
Typical prices: C$ 691-C$ 808
Air Transat
Thu 8/1Sat 17/1
YYZ - LGW • Direct
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to London!
Flight Deals
Useful Info
Flight Deals

Cheap Flights from Ontario to London

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

Sat, 17 Jan - Sun, 1 Feb
Icelandair Logo
7:40 p.m. - 7:30 p.m.YYZ-LHR
18h 50m1 stop
Icelandair Logo
12:15 p.m. - 6:15 p.m.LHR-YYZ
11h 00m1 stop
C$ 757Icelandair
Find Deal
Thu, 8 Jan - Sat, 17 Jan
Air Transat Logo
9:35 p.m. - 9:45 a.m.YYZ-LGW
7h 10mdirect
Air Transat Logo
11:40 a.m. - 3:00 p.m.LGW-YYZ
8h 20mdirect
C$ 757Air Transat
Find Deal
Mon, 2 Feb - Tue, 10 Feb
Multiple Airlines Logo
5:25 p.m. - 2:20 p.m.YYZ-STN
15h 55m1 stop
Multiple Airlines Logo
8:30 a.m. - 3:55 p.m.STN-YYZ
12h 25m1 stop
C$ 757Multiple Airlines
Find Deal
Mon, 2 Feb - Sun, 8 Feb
Multiple Airlines Logo
5:25 p.m. - 8:35 a.m.YYZ-LTN
10h 10m1 stop
Multiple Airlines Logo
8:05 a.m. - 3:55 p.m.LTN-YYZ
12h 50m1 stop
C$ 758Multiple Airlines
Find Deal
Sun, 1 Feb - Tue, 10 Feb
Icelandair Logo
7:40 p.m. - 10:50 a.m.YYZ-LHR
10h 10m1 stop
Icelandair Logo
12:15 p.m. - 6:15 p.m.LHR-YYZ
11h 00m1 stop
C$ 758Icelandair
Find Deal
Mon, 24 Nov - Thu, 27 Nov
Air Canada Logo
3:30 p.m. - 7:10 a.m.YTZ-LHR
10h 40m1 stop
Air Canada Logo
9:00 a.m. - 5:55 p.m.LHR-YTZ
13h 55m2 stops
C$ 814Air Canada
Find Deal
Fri, 28 Nov - Sun, 7 Dec
Air Canada Logo
1:20 p.m. - 9:20 a.m.YUL-LHR
15h 00m1 stop
Air Canada Logo
1:25 p.m. - 4:10 p.m.LHR-YUL
7h 45mdirect
C$ 814Air Canada
Find Deal
Mon, 12 Jan - Tue, 19 May
Porter Airlines Logo
10:15 a.m. - 9:45 a.m.YUL-LGW
18h 30m1 stop
Porter Airlines Logo
12:40 p.m. - 9:43 p.m.LGW-YUL
14h 03m1 stop
C$ 818Porter Airlines
Find Deal
Thu, 27 Nov - Sat, 6 Dec
Lufthansa Logo
7:10 p.m. - 7:10 a.m.YUL-LHR
7h 00mdirect
Lufthansa Logo
8:45 a.m. - 6:20 p.m.LHR-YUL
14h 35m1 stop
C$ 824Lufthansa
Find Deal
Wed, 26 Nov - Thu, 4 Dec
Porter Airlines Logo
10:35 a.m. - 9:45 a.m.YUL-LGW
18h 10m1 stop
Porter Airlines Logo
11:40 a.m. - 10:25 p.m.LGW-YUL
15h 45m1 stop
C$ 827Porter Airlines
Find Deal
Useful Info

Good to know

Low seasonNovember
Cheapest flightC$ 350
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly (1% more expensive on average)
Flight from Toronto to London Luton Airport

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

Insights shared by verified travellers who flew the route from Ontario to London 
CFlew with Air CanadaYYZ-LHRFeb 2025
Flying from Toronto to London is a long-haul journey, but with the right preparation, it can be a smooth and enjoyable experience. Here are some tips to make your trip more comfortable: Choose the Right Flight – If possible, book an overnight flight (a "red-eye"). This allows you to sleep on the plane and arrive in London in the morning, helping with jet lag. Pack Smart – London’s weather can be unpredictable, so bring layers and a compact umbrella. Also, keep essentials like a travel adapter and charger in your carry-on. Use Luggage Tracking – If flying Air Canada, take advantage of their luggage tracking feature for peace of mind, knowing your bags are on the same flight as you. Stay Hydrated & Bring Snacks – Airplane cabins can be dry, so drink plenty of water. While airlines provide meals, it’s always a good idea to have extra snacks. Manage Jet Lag – Adjust your sleep schedule before departure and try to stay awake until nighttime in London to quickly adapt to the new time zone. Transportation on Arrival – Heathrow and Gatwick have great transport links. The Heathrow Express is the fastest way into central London, while the Tube (Piccadilly Line) is more budget-friendly. Have Your Documents Ready – Ensure your passport is valid, and if required, have your visa or travel authorization (e.g., an ETA for UK entry). With the right prep, your journey will be smooth and enjoyable.
Mohamed ImranFlew with Air TransatYYZ-LGWSep 2024
Pack food for yourself before boarding Air Transat. Blankets, pillows and headphones are not given for free.
GerhardFlew with British AirwaysYYZ-LHRJun 2024
the lounge is nice. Although the crew at check in will say there are no showers, there are! Check the board for delays
CatherineFlew with LufthansaYYZ-LHRMay 2024
Pack light to avoid checked bag fees and then volunteer to place the carry on bag in the hold for no extra cost.
Verified travelerFlew with Air CanadaYYZ-LHRMay 2024
Keep in mind the security gate post security as you cannot return back if you happened to miss collecting all your items
Verified travelerFlew with LufthansaYYZ-LHRMay 2024
Bring water and less luggage on board if possible.

FAQs for booking flights from Ontario to London

  • How does KAYAK find such low prices on flights from Ontario to London?

    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 Ontario to London.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to London?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Ontario 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 Ontario to London?

    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 to London with an airline and back to Ontario with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to London?

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

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Brighton
Hayes
Wembley
Slough
Reading
Croydon
Crawley
Dover
Richmond
St. Albans
Watford
Canterbury
Milton Keynes
Eastbourne
Guildford
Winchester
Southall
Hastings

Everything you need to know for your flight to London

Cabin class types available on flights to Ontario

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