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 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.

C$ 396 CHEAP FLIGHTS from Ontario to London

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals

Cheap Flights from Ontario to London

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

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Ontario to London

Tue, 10 Nov - Tue, 17 Nov

7:40 p.m. - 8:00 p.m.YYZ Toronto Pearson Intl-LTN London Luton

19h 20m2 stops Reykjavik Keflavik Intl Dublin

7:45 a.m. - 6:15 p.m.LTN London Luton-YYZ Toronto Pearson Intl

15h 30m2 stops Dublin Reykjavik Keflavik Intl

C$ 791Multiple Airlines

Tue, 20 Oct - Thu, 19 Nov

10:45 p.m. - 10:45 a.m.YYZ Toronto Pearson Intl-LGW London Gatwick

7h 00mdirect

11:40 a.m. - 3:00 p.m.LGW London Gatwick-YYZ Toronto Pearson Intl

8h 20mdirect

C$ 791Porter Airlines

Mon, 16 Nov - Fri, 27 Nov

9:35 p.m. - 9:45 a.m.YYZ Toronto Pearson Intl-LGW London Gatwick

7h 10mdirect

11:40 a.m. - 3:00 p.m.LGW London Gatwick-YYZ Toronto Pearson Intl

8h 20mdirect

C$ 791Air Transat

Tue, 24 Nov - Fri, 27 Nov

9:35 p.m. - 9:45 a.m.YYZ Toronto Pearson Intl-LGW London Gatwick

7h 10mdirect

11:40 a.m. - 3:00 p.m.LGW London Gatwick-YYZ Toronto Pearson Intl

8h 20mdirect

C$ 791Air Transat

Sun, 8 Nov - Sun, 15 Nov

7:40 p.m. - 10:50 a.m.YYZ Toronto Pearson Intl-LHR London Heathrow

10h 10m1 stop Reykjavik Keflavik Intl

8:35 p.m. - 6:15 p.m.LHR London Heathrow-YYZ Toronto Pearson Intl

26h 40m1 stop Reykjavik Keflavik Intl

C$ 791Icelandair

Sat, 7 Nov - Fri, 13 Nov

7:40 p.m. - 10:50 a.m.YYZ Toronto Pearson Intl-LHR London Heathrow

10h 10m1 stop Reykjavik Keflavik Intl

12:15 p.m. - 6:15 p.m.LHR London Heathrow-YYZ Toronto Pearson Intl

11h 00m1 stop Reykjavik Keflavik Intl

C$ 791Icelandair

Tue, 19 Jan - Tue, 26 Jan

5:30 p.m. - 12:55 p.m.YYZ Toronto Pearson Intl-STN London Stansted

14h 25m1 stop Lisbon Humberto Delgado

6:05 a.m. - 3:20 p.m.STN London Stansted-YYZ Toronto Pearson Intl

14h 15m1 stop Lisbon Humberto Delgado

C$ 791Multiple Airlines

Mon, 18 Jan - Sat, 30 Jan

10:45 p.m. - 3:45 p.m.YYZ Toronto Pearson Intl-LGW London Gatwick

12h 00m1 stop Lisbon Humberto Delgado

4:35 p.m. - 2:25 p.m.LGW London Gatwick-YYZ Toronto Pearson Intl

26h 50m1 stop Lisbon Humberto Delgado

C$ 794TAP AIR PORTUGAL

Mon, 16 Nov - Wed, 25 Nov

9:35 p.m. - 9:45 a.m.YYZ Toronto Pearson Intl-LGW London Gatwick

7h 10mdirect

11:40 a.m. - 3:00 p.m.LGW London Gatwick-YYZ Toronto Pearson Intl

8h 20mdirect

C$ 795Porter Airlines

Wed, 11 Nov - Wed, 9 Dec

10:45 p.m. - 3:05 p.m.YYZ Toronto Pearson Intl-LGW London Gatwick

11h 20m1 stop Lisbon Humberto Delgado

4:35 p.m. - 2:45 p.m.LGW London Gatwick-YYZ Toronto Pearson Intl

27h 10m1 stop Lisbon Humberto Delgado

C$ 798TAP AIR PORTUGAL

Recent last minute flight deals from Ontario to London

Wed, 7 Oct - Tue, 13 Oct

8:20 p.m. - 11:20 p.m.YYZ Toronto Pearson Intl-STN London Stansted

22h 00m2 stops Munich Franz Josef Strauss Dublin

10:00 p.m. - 11:25 a.m.STN London Stansted-YYZ Toronto Pearson Intl

18h 25m1 stop Dublin

C$ 791Multiple Airlines

Sat, 10 Oct - Fri, 16 Oct

10:00 a.m. - 9:50 a.m.YTZ Toronto Island-LGW London Gatwick

18h 50m1 stop Montreal Pierre Elliott Trudeau Intl

9:40 a.m. - 10:15 a.m.LGW London Gatwick-YTZ Toronto Island

29h 35m1 stop Ottawa

C$ 792Air Transat

Thu, 8 Oct - Sun, 11 Oct

8:45 p.m. - 7:55 a.m.YTZ Toronto Island-LGW London Gatwick

30h 10m1 stop Ottawa

9:40 a.m. - 4:30 p.m.LGW London Gatwick-YTZ Toronto Island

11h 50m1 stop Ottawa

C$ 794Air Transat

Tue, 6 Oct - Sat, 10 Oct

10:45 p.m. - 10:45 a.m.YYZ Toronto Pearson Intl-LGW London Gatwick

7h 00mdirect

9:40 a.m. - 12:45 p.m.LGW London Gatwick-YYZ Toronto Pearson Intl

8h 05mdirect

C$ 801Porter Airlines

Wed, 7 Oct - Wed, 14 Oct

8:20 p.m. - 11:20 p.m.YYZ Toronto Pearson Intl-STN London Stansted

22h 00m2 stops Munich Franz Josef Strauss Dublin

6:30 a.m. - 11:25 a.m.STN London Stansted-YYZ Toronto Pearson Intl

9h 55m1 stop Dublin

C$ 801Multiple Airlines

Mon, 5 Oct - Wed, 9 Dec

5:45 p.m. - 10:20 a.m.YYZ Toronto Pearson Intl-LHR London Heathrow

11h 35m1 stop Lisbon Humberto Delgado

6:00 a.m. - 9:15 p.m.LHR London Heathrow-YYZ Toronto Pearson Intl

20h 15m1 stop Lisbon Humberto Delgado

C$ 802TAP AIR PORTUGAL

Mon, 5 Oct - Wed, 9 Dec

5:45 p.m. - 10:20 a.m.YYZ Toronto Pearson Intl-LHR London Heathrow

11h 35m1 stop Lisbon Humberto Delgado

6:00 a.m. - 9:15 p.m.LHR London Heathrow-YYZ Toronto Pearson Intl

20h 15m1 stop Lisbon Humberto Delgado

C$ 804TAP AIR PORTUGAL

Tue, 6 Oct - Tue, 20 Oct

8:15 p.m. - 8:35 a.m.YYZ Toronto Pearson Intl-LHR London Heathrow

31h 20m1 stop Ottawa

6:00 a.m. - 12:50 p.m.LHR London Heathrow-YYZ Toronto Pearson Intl

11h 50m1 stop Zurich

C$ 853Air Canada

Tue, 6 Oct - Tue, 20 Oct

11:50 p.m. - 11:50 a.m.YYZ Toronto Pearson Intl-LHR London Heathrow

7h 00mdirect

6:00 a.m. - 12:50 p.m.LHR London Heathrow-YYZ Toronto Pearson Intl

11h 50m1 stop Zurich

C$ 858Air Canada

Wed, 7 Oct - Wed, 14 Oct

10:45 p.m. - 10:45 a.m.YYZ Toronto Pearson Intl-LGW London Gatwick

7h 00mdirect

12:40 p.m. - 3:40 p.m.LGW London Gatwick-YYZ Toronto Pearson Intl

8h 00mdirect

C$ 927Porter Airlines

Recent direct flight deals from Ontario to London

Tue, 20 Oct - Thu, 19 Nov

10:45 p.m. - 10:45 a.m.YYZ Toronto Pearson Intl-LGW London Gatwick

7h 00mdirect

11:40 a.m. - 3:00 p.m.LGW London Gatwick-YYZ Toronto Pearson Intl

8h 20mdirect

C$ 791Porter Airlines

Mon, 9 Nov - Thu, 26 Nov

9:35 p.m. - 9:45 a.m.YYZ Toronto Pearson Intl-LGW London Gatwick

7h 10mdirect

11:40 a.m. - 3:00 p.m.LGW London Gatwick-YYZ Toronto Pearson Intl

8h 20mdirect

C$ 791Air Transat

Mon, 23 Nov - Sat, 28 Nov

9:35 p.m. - 9:45 a.m.YYZ Toronto Pearson Intl-LGW London Gatwick

7h 10mdirect

11:40 a.m. - 3:00 p.m.LGW London Gatwick-YYZ Toronto Pearson Intl

8h 20mdirect

C$ 791Air Transat

Mon, 23 Nov - Tue, 23 Feb

9:35 p.m. - 9:45 a.m.YYZ Toronto Pearson Intl-LGW London Gatwick

7h 10mdirect

11:40 a.m. - 3:00 p.m.LGW London Gatwick-YYZ Toronto Pearson Intl

8h 20mdirect

C$ 795Porter Airlines

Wed, 11 Nov - Wed, 18 Nov

11:00 p.m. - 11:20 a.m.YYZ Toronto Pearson Intl-LHR London Heathrow

7h 20mdirect

3:00 p.m. - 6:05 p.m.LHR London Heathrow-YYZ Toronto Pearson Intl

8h 05mdirect

C$ 868Air Canada

Fri, 13 Nov - Mon, 16 Nov

8:10 p.m. - 8:30 a.m.YYZ Toronto Pearson Intl-LHR London Heathrow

7h 20mdirect

6:00 p.m. - 9:05 p.m.LHR London Heathrow-YYZ Toronto Pearson Intl

8h 05mdirect

C$ 869Multiple Airlines

Thu, 22 Oct - Tue, 27 Oct

11:50 p.m. - 11:50 a.m.YYZ Toronto Pearson Intl-LHR London Heathrow

7h 00mdirect

3:00 p.m. - 7:00 p.m.LHR London Heathrow-YYZ Toronto Pearson Intl

8h 00mdirect

C$ 870Air Canada

Sat, 14 Nov - Sat, 21 Nov

9:45 p.m. - 9:50 a.m.YYZ Toronto Pearson Intl-LHR London Heathrow

7h 05mdirect

4:10 p.m. - 7:05 p.m.LHR London Heathrow-YYZ Toronto Pearson Intl

7h 55mdirect

C$ 875Virgin Atlantic

Sat, 7 Nov - Sat, 14 Nov

11:00 p.m. - 11:20 a.m.YYZ Toronto Pearson Intl-LHR London Heathrow

7h 20mdirect

6:00 p.m. - 9:05 p.m.LHR London Heathrow-YYZ Toronto Pearson Intl

8h 05mdirect

C$ 876Multiple Airlines

Sat, 5 Dec - Mon, 14 Dec

9:45 p.m. - 9:50 a.m.YYZ Toronto Pearson Intl-LHR London Heathrow

7h 05mdirect

4:10 p.m. - 7:05 p.m.LHR London Heathrow-YYZ Toronto Pearson Intl

7h 55mdirect

C$ 898Virgin Atlantic

Useful Info

Low season	January
High season	July
Cheapest flight	C$ 396

Best time to beat the crowds (20% less expensive on average)

Most popular time to fly (11% more expensive on average)

Flight from Ottawa to London Heathrow Airport

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-Sep 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.

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 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.

Hounslow

Gatwick

Brighton

Reading

Hayes

Guildford

Wembley

Croydon

Harrow

Slough

Ilford

Winchester

Canterbury

Crawley

Bedford

Milton Keynes

Dover

Borehamwood

Horley

Twickenham

More options for your flight to London

Add a hotel or car rental

Cabin class

Direct Flights

Origins

Other airports

Other destinations

Return flight

Complete your trip to London with a hotel stay or car rental

Car rentals in London

C$ 396 Find Cheap Flights from Ontario to London – Compare and Save

Cheap Flights from Ontario to London

Recent round-trip flight deals from Ontario to London

Recent one-way flight deals from Ontario to London

Recent last minute flight deals from Ontario to London

Recent direct flight deals from Ontario to London

Good to know

Low season

High season

Cheapest flight

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

FAQs for booking flights from Ontario to London

Travelling to a place near London?

More options for your flight to London

Complete your trip to London with a hotel stay or car rental

Cabin class types available on flights to Ontario

Find direct flights for London

Flights from domestic origins to London

Choose which airport to fly into in London

Flights to other popular destinations

Find deals for your return flight