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$ 387 CHEAP FLIGHTS from Ontario to London

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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

Mon, 5 Oct - Wed, 9 Dec

10:55 p.m. - 3:35 p.m.YYZ Toronto Pearson Intl-LGW London Gatwick

11h 40m1 stop Lisbon Humberto Delgado

10:40 a.m. - 9:15 p.m.LGW London Gatwick-YYZ Toronto Pearson Intl

15h 35m1 stop Lisbon Humberto Delgado

C$ 780TAP AIR PORTUGAL

Thu, 3 Dec - Mon, 7 Dec

5:30 p.m. - 9:50 a.m.YYZ Toronto Pearson Intl-LGW London Gatwick

11h 20m1 stop Lisbon Humberto Delgado

10:40 a.m. - 9:15 p.m.LGW London Gatwick-YYZ Toronto Pearson Intl

15h 35m1 stop Lisbon Humberto Delgado

C$ 780TAP AIR PORTUGAL

Thu, 24 Sep - Fri, 6 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$ 781Air Transat

Tue, 6 Oct - Mon, 12 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$ 781Air Transat

Sun, 8 Nov - Mon, 30 Nov

7:40 p.m. - 10:55 a.m.YYZ Toronto Pearson Intl-LGW London Gatwick

10h 15m1 stop Reykjavik Keflavik Intl

11:55 a.m. - 6:15 p.m.LGW London Gatwick-YYZ Toronto Pearson Intl

11h 20m1 stop Reykjavik Keflavik Intl

C$ 781Icelandair

Sat, 7 Nov - Wed, 25 Nov

7:40 p.m. - 10:55 a.m.YYZ Toronto Pearson Intl-LGW London Gatwick

10h 15m1 stop Reykjavik Keflavik Intl

11:55 a.m. - 6:15 p.m.LGW London Gatwick-YYZ Toronto Pearson Intl

11h 20m1 stop Reykjavik Keflavik Intl

C$ 781Icelandair

Sun, 8 Nov - Sun, 15 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$ 781Porter Airlines

Thu, 26 Nov - Thu, 3 Dec

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$ 781Porter Airlines

Wed, 25 Nov - Mon, 30 Nov

6:45 p.m. - 6:00 p.m.YYZ Toronto Pearson Intl-STN London Stansted

18h 15m1 stop Lisbon Humberto Delgado

7:50 p.m. - 3:50 p.m.STN London Stansted-YYZ Toronto Pearson Intl

25h 00m2 stops Lisbon Humberto Delgado Montreal Pierre Elliott Trudeau Intl

C$ 781Multiple Airlines

Thu, 8 Oct - Fri, 16 Oct

9:35 p.m. - 7:35 p.m.YYZ Toronto Pearson Intl-STN London Stansted

17h 00m1 stop Dublin

6:35 a.m. - 1:20 p.m.STN London Stansted-YYZ Toronto Pearson Intl

11h 45m1 stop Dublin

C$ 781Multiple Airlines

Recent last minute flight deals from Ontario to London

Sun, 6 Sep - Wed, 9 Sep

4:55 p.m. - 7:55 a.m.YTZ Toronto Island-LGW London Gatwick

10h 00m1 stop Ottawa

11:35 a.m. - 8:11 p.m.LGW London Gatwick-YTZ Toronto Island

13h 36m1 stop Montreal Pierre Elliott Trudeau Intl

C$ 813Air Transat

Sun, 6 Sep - Tue, 15 Sep

4:55 p.m. - 7:55 a.m.YTZ Toronto Island-LGW London Gatwick

10h 00m1 stop Ottawa

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

11h 50m1 stop Ottawa

C$ 824Air Transat

Sun, 6 Sep - Mon, 14 Sep

6:15 p.m. - 6:45 a.m.YYZ Toronto Pearson Intl-STN London Stansted

31h 30m2 stops Halifax Intl Kastrup Copenhagen

6:05 a.m. - 1:40 p.m.STN London Stansted-YYZ Toronto Pearson Intl

12h 35m1 stop Glasgow Intl

C$ 844Multiple Airlines

Fri, 4 Sep - Fri, 11 Sep

9:00 a.m. - 9:00 p.m.YUL Montreal Pierre Elliott Trudeau Intl-LHR London Heathrow

31h 00m1 stop Halifax Intl

6:00 a.m. - 3:00 p.m.LHR London Heathrow-YUL Montreal Pierre Elliott Trudeau Intl

14h 00m1 stop Zurich

C$ 851Multiple Airlines

Thu, 3 Sep - Fri, 11 Sep

12:05 p.m. - 9:00 p.m.YYZ Toronto Pearson Intl-LHR London Heathrow

27h 55m1 stop Halifax Intl

8:40 a.m. - 4:10 p.m.LHR London Heathrow-YYZ Toronto Pearson Intl

12h 30m1 stop Zurich

C$ 872Air Canada

Sun, 6 Sep - Sun, 13 Sep

9:00 a.m. - 9:00 p.m.YUL Montreal Pierre Elliott Trudeau Intl-LHR London Heathrow

31h 00m1 stop Halifax Intl

6:00 a.m. - 3:00 p.m.LHR London Heathrow-YUL Montreal Pierre Elliott Trudeau Intl

14h 00m1 stop Zurich

C$ 872Air Canada

Fri, 4 Sep - Fri, 11 Sep

11:15 p.m. - 11:20 a.m.YYZ Toronto Pearson Intl-LGW London Gatwick

31h 05m1 stop Montreal Pierre Elliott Trudeau Intl

11:35 a.m. - 6:24 p.m.LGW London Gatwick-YYZ Toronto Pearson Intl

11h 49m1 stop Montreal Pierre Elliott Trudeau Intl

C$ 874Porter Airlines

Sat, 5 Sep - Wed, 9 Sep

6:10 p.m. - 11:20 a.m.YYZ Toronto Pearson Intl-LGW London Gatwick

12h 10m1 stop Montreal Pierre Elliott Trudeau Intl

11:35 a.m. - 6:24 p.m.LGW London Gatwick-YYZ Toronto Pearson Intl

11h 49m1 stop Montreal Pierre Elliott Trudeau Intl

C$ 883Porter Airlines

Sun, 6 Sep - Mon, 14 Sep

4:55 p.m. - 9:00 p.m.YYZ Toronto Pearson Intl-LHR London Heathrow

23h 05m1 stop Halifax Intl

6:55 a.m. - 2:55 p.m.LHR London Heathrow-YYZ Toronto Pearson Intl

13h 00m1 stop Munich Franz Josef Strauss

C$ 890Lufthansa

Sun, 6 Sep - Mon, 14 Sep

4:55 p.m. - 9:00 p.m.YYZ Toronto Pearson Intl-LHR London Heathrow

23h 05m1 stop Halifax Intl

7:25 a.m. - 2:55 p.m.LHR London Heathrow-YYZ Toronto Pearson Intl

12h 30m1 stop Munich Franz Josef Strauss

C$ 891Lufthansa

Recent direct flight deals from Ontario to London

Thu, 24 Sep - Thu, 5 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$ 781Air Transat

Sat, 6 Feb - Sat, 20 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$ 781Air Transat

Sun, 8 Nov - Sun, 15 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$ 781Porter Airlines

Fri, 26 Feb - Sun, 7 Mar

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$ 781Porter Airlines

Thu, 11 Feb - Tue, 9 Mar

10:20 p.m. - 10:25 a.m.YYZ Toronto Pearson Intl-LHR London Heathrow

7h 05mdirect

5:15 p.m. - 8:15 p.m.LHR London Heathrow-YYZ Toronto Pearson Intl

8h 00mdirect

C$ 806British Airways

Tue, 15 Sep - Sun, 20 Sep

10:05 p.m. - 9:50 a.m.YUL Montreal Pierre Elliott Trudeau Intl-LGW London Gatwick

6h 45mdirect

11:35 a.m. - 2:15 p.m.LGW London Gatwick-YUL Montreal Pierre Elliott Trudeau Intl

7h 40mdirect

C$ 816Multiple Airlines

Tue, 15 Sep - Wed, 23 Sep

10:05 p.m. - 9:50 a.m.YUL Montreal Pierre Elliott Trudeau Intl-LGW London Gatwick

6h 45mdirect

11:35 a.m. - 2:15 p.m.LGW London Gatwick-YUL Montreal Pierre Elliott Trudeau Intl

7h 40mdirect

C$ 816Multiple Airlines

Sun, 27 Sep - Sat, 3 Oct

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

7h 00mdirect

8:30 a.m. - 11:15 a.m.LHR London Heathrow-YYZ Toronto Pearson Intl

7h 45mdirect

C$ 841Air Canada

Tue, 13 Oct - Tue, 20 Oct

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

7h 00mdirect

5:40 p.m. - 8:30 p.m.LHR London Heathrow-YYZ Toronto Pearson Intl

7h 50mdirect

C$ 848Air Canada

Wed, 13 Jan - Thu, 28 Jan

9:15 p.m. - 9:05 a.m.YUL Montreal Pierre Elliott Trudeau Intl-LHR London Heathrow

6h 50mdirect

4:45 p.m. - 7:15 p.m.LHR London Heathrow-YUL Montreal Pierre Elliott Trudeau Intl

7h 30mdirect

C$ 863British Airways

Useful Info

Low season	January
High season	December
Cheapest flight	C$ 387

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 Gatwick 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

Reading

Brighton

Hayes

Wembley

Guildford

Croydon

Harrow

Slough

Ilford

Winchester

Bedford

Canterbury

Crawley

Dover

Milton Keynes

Horley

Richmond

Brentford

Everything you need to know for your flight to London

Cabin class

Complete your trip

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Return flight deals

Cabin class types available on flights to Ontario

First Class flights to Londonfrom C$ 948

Business Class flights to Londonfrom C$ 1,124

Premium Economy Class flights to Londonfrom C$ 2,175

Economy Class flights to Londonfrom C$ 672

C$ 387 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?

Everything you need to know for your flight to London

Cabin class types available on flights to Ontario

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

Find direct flights for London

Flights to other popular destinations

Flights from domestic origins to London

Choose which airport to fly into in London

Find deals for your return flight