£206 Find Cheap Flights from Ontario to London – Compare and Save

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Cheap Flights from Ontario to London

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

Recent return flight deals from Ontario to London

Sun, 20 Sep - Mon, 28 Sep
Air Transat Logo
16:55 - 09:50YTZ  Toronto Island-LGW London Gatwick
11h 55m1 stop Montreal Pierre Elliott Trudeau Intl
Air Transat Logo
11:35 - 20:11LGW  London Gatwick-YTZ Toronto Island
13h 36m1 stop Montreal Pierre Elliott Trudeau Intl
£416Air Transat
Thu, 19 Nov - Tue, 24 Nov
Icelandair Logo
19:40 - 10:50YYZ  Toronto Pearson Intl-LHR London Heathrow
10h 10m1 stop Reykjavik Keflavik Intl
Icelandair Logo
12:15 - 18:15LHR  London Heathrow-YYZ Toronto Pearson Intl
11h 00m1 stop Reykjavik Keflavik Intl
£416Icelandair
Tue, 3 Nov - Tue, 10 Nov
Scandinavian Airlines Logo
17:10 - 14:35YYZ  Toronto Pearson Intl-LHR London Heathrow
16h 25m2 stops Kastrup Copenhagen Oslo Gardermoen
Scandinavian Airlines Logo
06:40 - 15:40LHR  London Heathrow-YYZ Toronto Pearson Intl
14h 00m1 stop Kastrup Copenhagen
£416Scandinavian Airlines
Tue, 17 Nov - Wed, 25 Nov
Scandinavian Airlines Logo
17:10 - 16:00YYZ  Toronto Pearson Intl-LHR London Heathrow
17h 50m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
10:20 - 15:40LHR  London Heathrow-YYZ Toronto Pearson Intl
34h 20m1 stop Kastrup Copenhagen
£416Scandinavian Airlines
Sun, 14 Feb - Fri, 19 Feb
Air Transat Logo
21:35 - 09:45YYZ  Toronto Pearson Intl-LGW London Gatwick
7h 10mdirect
Air Transat Logo
11:40 - 15:00LGW  London Gatwick-YYZ Toronto Pearson Intl
8h 20mdirect
£416Air Transat
Mon, 23 Nov - Mon, 30 Nov
Icelandair Logo
19:40 - 19:30YYZ  Toronto Pearson Intl-LHR London Heathrow
18h 50m1 stop Reykjavik Keflavik Intl
Icelandair Logo
12:15 - 18:15LHR  London Heathrow-YYZ Toronto Pearson Intl
11h 00m1 stop Reykjavik Keflavik Intl
£416Icelandair
Thu, 11 Feb - Tue, 9 Mar
British Airways Logo
22:20 - 10:25YYZ  Toronto Pearson Intl-LHR London Heathrow
7h 05mdirect
British Airways Logo
17:15 - 20:15LHR  London Heathrow-YYZ Toronto Pearson Intl
8h 00mdirect
£429British Airways
Mon, 8 Feb - Wed, 10 Feb
Air Canada Logo
18:50 - 18:40YUL  Montreal Pierre Elliott Trudeau Intl-LHR London Heathrow
18h 50m1 stop Vienna Intl
Air Canada Logo
12:05 - 15:10LHR  London Heathrow-YUL Montreal Pierre Elliott Trudeau Intl
32h 05m1 stop Zurich
£430Air Canada
Mon, 8 Feb - Thu, 11 Feb
Air Canada Logo
18:50 - 08:20YUL  Montreal Pierre Elliott Trudeau Intl-LHR London Heathrow
32h 30m1 stop Vienna Intl
Air Canada Logo
06:00 - 15:10LHR  London Heathrow-YUL Montreal Pierre Elliott Trudeau Intl
14h 10m1 stop Zurich
£430Air Canada
Wed, 13 Jan - Thu, 28 Jan
British Airways Logo
21:15 - 09:05YUL  Montreal Pierre Elliott Trudeau Intl-LHR London Heathrow
6h 50mdirect
British Airways Logo
16:45 - 19:15LHR  London Heathrow-YUL Montreal Pierre Elliott Trudeau Intl
7h 30mdirect
£459British Airways
Useful Info

Good to know - Cheap tickets from Ontario to London

Low season

January

Cheapest flight

£206
Best time to beat the crowds (20% less expensive on average)
Most popular time to fly (10% more expensive on average)
Flight from Montreal to London Stansted 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 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.
Mohamed ImranFlew with Air Transat-Sept 2024
Pack food for yourself before boarding Air Transat. Blankets, pillows and headphones are not given for free.
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 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 return 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
Gatwick
Eastbourne
Milton Keynes
Hounslow
Luton
Southend-on-Sea
Newport
Winchester
Folkestone
Slough
Croydon
Stansted
Colchester
Chichester
Crawley
Maidstone
Chelmsford
Hastings
Bedford
Richmond

Everything you need to know for your flight to London

Cabin class types available on flights to Ontario

First Class flights to London
Business Class flights to Londonfrom £1,344
Premium Economy Class flights to Londonfrom £1,273
Economy class flights to Londonfrom £182