£159 Find Cheap Flights from Ontario to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Heathrow departing on 3/2. 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

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Everything you should know

Cheapest return fare
£418
Typical prices: £409-£488
TAP AIR PORTUGAL
Mon 6/4Mon 13/4
YYZ - LHR • 1 stop
Cheapest direct flights
£419
Typical prices: £419-£509
Air Canada
Wed 14/1Wed 21/1
YYZ - LHR • Direct
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We hope you love your trip to Heathrow!
Flight Deals
Useful Info
Flight Deals

Cheap Flights from Ontario to Heathrow

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

Mon, 6 Apr - Mon, 13 Apr
TAP AIR PORTUGAL Logo
17:45 - 10:20
YYZ
-
LHR
11h 35m1 stop
TAP AIR PORTUGAL Logo
06:00 - 15:15
LHR
-
YYZ
14h 15m1 stop
£418TAP AIR PORTUGAL
Fri, 10 Apr - Sun, 19 Apr
Icelandair Logo
23:20 - 20:20
YYZ
-
LHR
16h 00m1 stop
Icelandair Logo
21:25 - 19:10
LHR
-
YYZ
26h 45m1 stop
£419Icelandair
Fri, 15 May - Sun, 24 May
Icelandair Logo
23:20 - 20:20
YYZ
-
LHR
16h 00m1 stop
Icelandair Logo
21:25 - 19:10
LHR
-
YYZ
26h 45m1 stop
£419Icelandair
Wed, 4 Feb - Wed, 25 Feb
Multiple Airlines Logo
18:10 - 06:30
YYZ
-
LHR
7h 20mdirect
Multiple Airlines Logo
12:00 - 17:36
LHR
-
YYZ
10h 36m1 stop
£420Multiple Airlines
Wed, 11 Feb - Sun, 15 Feb
Multiple Airlines Logo
18:10 - 06:30
YYZ
-
LHR
7h 20mdirect
Multiple Airlines Logo
12:00 - 19:26
LHR
-
YYZ
12h 26m1 stop
£421Multiple Airlines
Sun, 1 Feb - Sun, 8 Feb
Air Canada Logo
18:10 - 06:30
YYZ
-
LHR
7h 20mdirect
Air Canada Logo
12:00 - 20:46
LHR
-
YYZ
13h 46m1 stop
£424Air Canada
Mon, 19 Jan - Thu, 22 Jan
Air Canada Logo
10:25 - 06:20
YTZ
-
LHR
14h 55m2 stops
Air Canada Logo
13:45 - 11:55
LHR
-
YTZ
51h 10m2 stops
£432Air Canada
Fri, 16 Jan - Fri, 23 Jan
Virgin Atlantic Logo
17:35 - 10:30
YOW
-
LHR
11h 55m1 stop
Virgin Atlantic Logo
08:55 - 15:10
LHR
-
YOW
11h 15m1 stop
£434Virgin Atlantic
Mon, 19 Jan - Sun, 1 Feb
Lufthansa Logo
19:30 - 07:10
YUL
-
LHR
6h 40mdirect
Lufthansa Logo
20:15 - 18:20
LHR
-
YUL
27h 05m1 stop
£442Lufthansa
Sun, 1 Feb - Sun, 8 Feb
Virgin Atlantic Logo
17:20 - 13:45
YOW
-
LHR
15h 25m1 stop
Virgin Atlantic Logo
09:00 - 15:10
LHR
-
YOW
11h 10m1 stop
£477Virgin Atlantic
Useful Info

Good to know - Cheap tickets from Ontario to London Heathrow Airport

Low seasonNovember
Cheapest flight£159
Best time to beat the crowds (6% less expensive on average)
Most popular time to fly (17% more expensive on average)
Flight from Hamilton to London Heathrow Airport

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

Insights shared by verified travellers who flew the route from Ontario to Heathrow 
CFlew with Air Canada
YYZ
-
LHR
Feb 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.
GerhardFlew with British Airways
YYZ
-
LHR
Jun 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 Lufthansa
YYZ
-
LHR
May 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 Canada
YYZ
-
LHR
May 2024
Keep in mind the security gate post security as you cannot return back if you happened to miss collecting all your items
IwonaFlew with Air Canada
YYZ
-
LHR
Apr 2024
Pack in ur carryon bag and don’t waste ur money to pay for check in
Verified travelerFlew with Lufthansa
YYZ
-
LHR
May 2024
Bring water and less luggage on board if possible.

FAQs for booking Ontario to London Heathrow Airport flights

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

    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 Heathrow Airport.

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London Heathrow Airport 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 Heathrow Airport?

    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 Heathrow Airport 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 Heathrow?

Book flights to Heathrow if you plan to visit one of these locations
Gatwick
Milton Keynes
Eastbourne
Hounslow
Luton
Southend-on-Sea
Swindon
Northampton
Slough
Winchester
Croydon
Stansted
Poole
Folkestone
Chichester
Maidstone
Salisbury
Colchester
Chelmsford
Crawley

Everything you need to know for your flight to Heathrow

Information on your arrival and departure airports