£212 Find Cheap Flights from Ontario to London Heathrow Airport – Compare and Save

1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Ontario to Heathrow

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Ontario to Heathrow

Tue, 17 Nov - Sun, 22 Nov
Icelandair Logo
19:40 - 19:30YYZ  Toronto Pearson Intl-LHR London Heathrow
18h 50m1 stop Reykjavik Keflavik Intl
Icelandair Logo
20:35 - 18:15LHR  London Heathrow-YYZ Toronto Pearson Intl
26h 40m1 stop Reykjavik Keflavik Intl
£407Icelandair
Tue, 9 Feb - Sun, 21 Feb
Icelandair Logo
19:40 - 19:30YYZ  Toronto Pearson Intl-LHR London Heathrow
18h 50m1 stop Reykjavik Keflavik Intl
Icelandair Logo
20:35 - 18:15LHR  London Heathrow-YYZ Toronto Pearson Intl
26h 40m1 stop Reykjavik Keflavik Intl
£408Icelandair
Thu, 26 Nov - Sun, 29 Nov
Air Canada Logo
20:25 - 11:15YYZ  Toronto Pearson Intl-LHR London Heathrow
33h 50m1 stop Zurich
Air Canada Logo
09:00 - 21:45LHR  London Heathrow-YYZ Toronto Pearson Intl
17h 45m2 stops Halifax Intl Ottawa
£416Air Canada
Thu, 26 Nov - Sun, 29 Nov
Air Canada Logo
20:25 - 11:15YYZ  Toronto Pearson Intl-LHR London Heathrow
33h 50m1 stop Zurich
Air Canada Logo
09:00 - 07:49LHR  London Heathrow-YYZ Toronto Pearson Intl
27h 49m1 stop Halifax Intl
£416Air Canada
Mon, 30 Nov - Thu, 3 Dec
Multiple Airlines Logo
20:35 - 08:05YYZ  Toronto Pearson Intl-LHR London Heathrow
30h 30m1 stop Zurich
Multiple Airlines Logo
06:35 - 14:55LHR  London Heathrow-YYZ Toronto Pearson Intl
13h 20m1 stop Munich Franz Josef Strauss
£416Multiple Airlines
Mon, 23 Nov - Thu, 26 Nov
Multiple Airlines Logo
20:25 - 08:05YYZ  Toronto Pearson Intl-LHR London Heathrow
30h 40m1 stop Zurich
Multiple Airlines Logo
07:40 - 14:55LHR  London Heathrow-YYZ Toronto Pearson Intl
12h 15m1 stop Munich Franz Josef Strauss
£416Multiple Airlines
Thu, 3 Dec - Wed, 9 Dec
KLM Logo
21:45 - 09:50YYZ  Toronto Pearson Intl-LHR London Heathrow
7h 05mdirect
KLM Logo
10:00 - 15:40LHR  London Heathrow-YYZ Toronto Pearson Intl
10h 40m1 stop Amsterdam Schiphol
£444KLM
Thu, 19 Nov - Sat, 21 Nov
Lufthansa Logo
21:25 - 22:20YYZ  Toronto Pearson Intl-LHR London Heathrow
19h 55m1 stop Frankfurt am Main
Lufthansa Logo
16:40 - 14:55LHR  London Heathrow-YYZ Toronto Pearson Intl
27h 15m1 stop Munich Franz Josef Strauss
£444Lufthansa
Thu, 25 Mar - Tue, 30 Mar
KLM Logo
22:45 - 09:50YYZ  Toronto Pearson Intl-LHR London Heathrow
7h 05mdirect
KLM Logo
20:55 - 13:55LHR  London Heathrow-YYZ Toronto Pearson Intl
22h 00m1 stop Amsterdam Schiphol
£463KLM
Thu, 26 Nov - Sat, 28 Nov
Lufthansa Logo
19:50 - 19:35YYZ  Toronto Pearson Intl-LHR London Heathrow
18h 45m1 stop Munich Franz Josef Strauss
Lufthansa Logo
15:30 - 19:50LHR  London Heathrow-YYZ Toronto Pearson Intl
33h 20m1 stop Frankfurt am Main
£479Lufthansa
Useful Info

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

Low season

January

Cheapest flight

£212
Best time to beat the crowds (17% less expensive on average)
Most popular time to fly (22% more expensive on average)
Flight from Toronto Pearson Airport 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-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-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-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-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-Apr 2024
Pack in ur carryon bag and don’t waste ur money to pay for check in
Verified travelerFlew with Lufthansa-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
Eastbourne
Milton Keynes
Hounslow
Luton
Northampton
Southend-on-Sea
Newport
Folkestone
Winchester
Poole
Swindon
Croydon
Slough
Stansted
Colchester
Crawley
Chichester
Maidstone
Salisbury

More options for your flight to Heathrow