LHR

C$ 300 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 21/1. 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 round-trip
C$ 764
Typical prices: C$ 769-C$ 910
Icelandair
Fri 3/4Sat 11/4
YYZ - LHR • 1 stop
Cheapest direct flights
C$ 805
Typical prices: C$ 766-C$ 858
Delta
Wed 4/2Mon 9/2
YYZ - LHR • Direct
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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

Fri, 3 Apr - Sat, 11 Apr
Icelandair Logo
11:25 p.m. - 11:55 a.m.YYZ-LHR
31h 30m1 stop
Icelandair Logo
9:25 p.m. - 7:10 p.m.LHR-YYZ
26h 45m1 stop
C$ 764Icelandair
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Thu, 16 Apr - Sun, 19 Apr
Icelandair Logo
11:25 p.m. - 8:20 p.m.YYZ-LHR
15h 55m1 stop
Icelandair Logo
9:25 p.m. - 7:10 p.m.LHR-YYZ
26h 45m1 stop
C$ 766Icelandair
Find Deal
Fri, 16 Jan - Sun, 25 Jan
Icelandair Logo
7:40 p.m. - 10:50 a.m.YYZ-LHR
10h 10m1 stop
Icelandair Logo
8:35 p.m. - 6:15 p.m.LHR-YYZ
26h 40m1 stop
C$ 767Icelandair
Find Deal
Thu, 9 Apr - Mon, 13 Apr
Icelandair Logo
11:25 p.m. - 11:55 a.m.YYZ-LHR
31h 30m1 stop
Icelandair Logo
9:25 p.m. - 7:10 p.m.LHR-YYZ
26h 45m1 stop
C$ 769Icelandair
Find Deal
Thu, 8 Jan - Fri, 16 Jan
Aer Lingus Logo
5:25 p.m. - 8:05 a.m.YYZ-LHR
9h 40m1 stop
Aer Lingus Logo
8:50 a.m. - 3:55 p.m.LHR-YYZ
12h 05m1 stop
C$ 776Aer Lingus
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Mon, 13 Apr - Thu, 23 Apr
TAP AIR PORTUGAL Logo
10:55 p.m. - 5:45 p.m.YYZ-LHR
13h 50m1 stop
TAP AIR PORTUGAL Logo
6:00 a.m. - 2:00 p.m.LHR-YYZ
13h 00m1 stop
C$ 777TAP AIR PORTUGAL
Find Deal
Sat, 7 Feb - Wed, 18 Feb
Air Canada Logo
6:30 p.m. - 10:05 a.m.YTZ-LHR
34h 35m2 stops
Air Canada Logo
9:00 a.m. - 5:55 p.m.LHR-YTZ
13h 55m2 stops
C$ 808Air Canada
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Wed, 3 Dec - Mon, 8 Dec
Air Canada Logo
10:25 a.m. - 7:10 a.m.YTZ-LHR
15h 45m2 stops
Air Canada Logo
6:50 a.m. - 2:55 p.m.LHR-YTZ
13h 05m2 stops
C$ 825Air Canada
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Tue, 10 Feb - Fri, 27 Feb
Multiple Airlines Logo
7:10 p.m. - 7:10 a.m.YUL-LHR
7h 00mdirect
Multiple Airlines Logo
9:00 a.m. - 2:55 p.m.LHR-YUL
10h 55m1 stop
C$ 826Multiple Airlines
Find Deal
Sun, 30 Nov - Sun, 7 Dec
Multiple Airlines Logo
3:30 p.m. - 9:20 a.m.YUL-LHR
12h 50m1 stop
Multiple Airlines Logo
1:25 p.m. - 4:10 p.m.LHR-YUL
7h 45mdirect
C$ 832Multiple Airlines
Find Deal
Useful Info

Good to know

Low seasonJanuary
Cheapest flightC$ 300
Best time to beat the crowds (13% less expensive on average)
Most popular time to fly (11% more expensive on average)
Flight from Thunder Bay to London

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.
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 flights

  • 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 travellers 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
Salisbury
Poole
Richmond
St. Albans
Watford
Canterbury
Stratford-upon-Avon
Milton Keynes
Eastbourne
Moreton-in-Marsh

Everything you need to know for your flight to London

Information on your arrival and departure airports