LHR

C$ 317 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 29/9. 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

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Cheap Flights from Ontario to Heathrow

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

Wed, 8 Oct - Wed, 22 Oct
Lufthansa Logo
4:00 p.m. - 6:30 a.m.YYZ-LHR
9h 30m1 stop
Lufthansa Logo
1:30 p.m. - 7:45 p.m.LHR-YYZ
11h 15m1 stop
C$ 587Lufthansa
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Tue, 11 Nov - Wed, 19 Nov
Icelandair Logo
7:45 p.m. - 10:50 a.m.YYZ-LHR
10h 05m1 stop
Icelandair Logo
8:35 p.m. - 6:15 p.m.LHR-YYZ
26h 40m1 stop
C$ 642Icelandair
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Mon, 10 Nov - Wed, 19 Nov
Icelandair Logo
7:45 p.m. - 10:50 a.m.YYZ-LHR
10h 05m1 stop
Icelandair Logo
12:15 p.m. - 6:15 p.m.LHR-YYZ
11h 00m1 stop
C$ 646Icelandair
Find Deal
Fri, 14 Nov - Wed, 19 Nov
TAP AIR PORTUGAL Logo
9:45 p.m. - 9:35 p.m.YUL-LHR
18h 50m1 stop
TAP AIR PORTUGAL Logo
6:00 a.m. - 8:15 p.m.LHR-YUL
19h 15m1 stop
C$ 657TAP AIR PORTUGAL
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Wed, 5 Nov - Mon, 17 Nov
TAP AIR PORTUGAL Logo
9:45 p.m. - 3:30 p.m.YUL-LHR
12h 45m1 stop
TAP AIR PORTUGAL Logo
8:15 a.m. - 8:15 p.m.LHR-YUL
17h 00m1 stop
C$ 658TAP AIR PORTUGAL
Find Deal
Mon, 17 Nov - Thu, 20 Nov
Austrian Airlines Logo
6:30 p.m. - 8:20 a.m.YYZ-LHR
32h 50m1 stop
Austrian Airlines Logo
6:00 a.m. - 2:25 p.m.LHR-YYZ
37h 25m2 stops
C$ 672Austrian Airlines
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Mon, 15 Sep - Tue, 23 Sep
Air Canada Logo
4:20 p.m. - 6:30 a.m.YTZ-LHR
9h 10m1 stop
Air Canada Logo
8:45 a.m. - 5:45 p.m.LHR-YTZ
14h 00m2 stops
C$ 676Air Canada
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Mon, 15 Sep - Tue, 23 Sep
Air Canada Logo
12:05 p.m. - 6:30 a.m.YYZ-LHR
13h 25m1 stop
Air Canada Logo
6:00 a.m. - 12:50 p.m.LHR-YYZ
11h 50m1 stop
C$ 684Air Canada
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Fri, 17 Oct - Sun, 2 Nov
 Logo
12:25 p.m. - 6:30 a.m.YTZ-LHR
13h 05m1 stop
 Logo
5:50 a.m. - 4:55 p.m.LHR-YTZ
15h 05m2 stops
C$ 703
Find Deal
Wed, 3 Sep - Sun, 14 Sep
 Logo
9:55 p.m. - 9:35 a.m.YUL-LHR
6h 40mdirect
 Logo
6:50 a.m. - 11:35 a.m.LHR-YUL
9h 45m1 stop
C$ 741
Find Deal
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Good to know

Low seasonJanuary
High seasonJuly
Cheapest flightC$ 317
Best time to beat the crowds (13% less expensive on average)
Most popular time to fly (16% 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 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.
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 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 round-trip 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
Hounslow
Brighton
Hayes
Wembley
Slough
Croydon
Dover
Milton Keynes
Eastbourne
Canterbury
Stratford-upon-Avon
Ilford
Guildford
Southall
St. Albans
Winchester
Borehamwood
Salisbury
Chichester
Poole

Everything you need to know for your flight to Heathrow

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