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.

£190 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.

Return

One-way

Last minute

Direct

Recent return flight deals from Ontario to London

Sun, 4 Oct - Sun, 11 Oct

19:40 - 07:55YOW Ottawa-LGW London Gatwick

7h 15mdirect

09:40 - 12:40LGW London Gatwick-YOW Ottawa

8h 00mdirect

£377Air Transat

Fri, 9 Oct - Sun, 11 Oct

19:40 - 07:55YOW Ottawa-LGW London Gatwick

7h 15mdirect

09:40 - 12:40LGW London Gatwick-YOW Ottawa

8h 00mdirect

£378Air Transat

Fri, 16 Oct - Wed, 21 Oct

22:45 - 10:45YYZ Toronto Pearson Intl-LGW London Gatwick

7h 00mdirect

11:35 - 17:40LGW London Gatwick-YYZ Toronto Pearson Intl

11h 05m1 stop Montreal Pierre Elliott Trudeau Intl

£417Porter Airlines

Sat, 17 Oct - Thu, 22 Oct

17:35 - 10:30YYZ Toronto Pearson Intl-LTN London Luton

11h 55m1 stop Dublin

09:25 - 15:50LTN London Luton-YYZ Toronto Pearson Intl

11h 25m1 stop Dublin

£417Multiple Airlines

Sat, 13 Feb - Mon, 1 Mar

19:40 - 10:50YYZ Toronto Pearson Intl-LHR London Heathrow

10h 10m1 stop Reykjavik Keflavik Intl

20:35 - 18:15LHR London Heathrow-YYZ Toronto Pearson Intl

26h 40m1 stop Reykjavik Keflavik Intl

£419Icelandair

Sun, 14 Feb - Mon, 1 Mar

19:40 - 10:50YYZ Toronto Pearson Intl-LHR London Heathrow

10h 10m1 stop Reykjavik Keflavik Intl

20:35 - 18:15LHR London Heathrow-YYZ Toronto Pearson Intl

26h 40m1 stop Reykjavik Keflavik Intl

£419Icelandair

Fri, 16 Oct - Mon, 19 Oct

10:00 - 10:00YYZ Toronto Pearson Intl-LHR London Heathrow

43h 00m2 stops Ottawa Montreal Pierre Elliott Trudeau Intl

08:40 - 12:50LHR London Heathrow-YYZ Toronto Pearson Intl

33h 10m1 stop Zurich

£429Air Canada

Fri, 2 Oct - Sun, 4 Oct

23:50 - 11:50YYZ Toronto Pearson Intl-LHR London Heathrow

7h 00mdirect

11:05 - 11:50LHR London Heathrow-YYZ Toronto Pearson Intl

29h 45m1 stop Brussels Bruxelles-National

£433Air Canada

Thu, 22 Oct - Mon, 2 Nov

22:55 - 11:10YYZ Toronto Pearson Intl-LHR London Heathrow

7h 15mdirect

16:10 - 19:05LHR London Heathrow-YYZ Toronto Pearson Intl

7h 55mdirect

£440Virgin Atlantic

Tue, 6 Oct - Sun, 11 Oct

22:55 - 11:10YYZ Toronto Pearson Intl-LHR London Heathrow

7h 15mdirect

17:45 - 20:35LHR London Heathrow-YYZ Toronto Pearson Intl

7h 50mdirect

£458Virgin Atlantic

Recent last minute flight deals from Ontario to London

Sun, 27 Sep - Sun, 4 Oct

19:40 - 07:55YOW Ottawa-LGW London Gatwick

7h 15mdirect

09:40 - 12:40LGW London Gatwick-YOW Ottawa

8h 00mdirect

£379Air Transat

Sun, 27 Sep - Sun, 4 Oct

16:00 - 10:45YOW Ottawa-LGW London Gatwick

13h 45m1 stop Toronto Pearson Intl

09:40 - 12:40LGW London Gatwick-YOW Ottawa

8h 00mdirect

£385Air Transat

Wed, 23 Sep - Tue, 1 Dec

17:35 - 14:00YYZ Toronto Pearson Intl-LGW London Gatwick

15h 25m1 stop Lisbon Humberto Delgado

16:35 - 21:15LGW London Gatwick-YYZ Toronto Pearson Intl

33h 40m1 stop Lisbon Humberto Delgado

£419TAP AIR PORTUGAL

Fri, 25 Sep - Wed, 30 Sep

23:55 - 19:55YYZ Toronto Pearson Intl-LGW London Gatwick

15h 00m1 stop Dublin

12:40 - 15:40LGW London Gatwick-YYZ Toronto Pearson Intl

8h 00mdirect

£419Multiple Airlines

Mon, 28 Sep - Tue, 13 Oct

14:05 - 06:30YYZ Toronto Pearson Intl-LHR London Heathrow

11h 25m1 stop Ottawa

06:50 - 11:50LHR London Heathrow-YYZ Toronto Pearson Intl

10h 00m1 stop Brussels Bruxelles-National

£454Air Canada

Mon, 28 Sep - Tue, 13 Oct

20:15 - 08:35YYZ Toronto Pearson Intl-LHR London Heathrow

7h 20mdirect

06:50 - 11:50LHR London Heathrow-YYZ Toronto Pearson Intl

10h 00m1 stop Brussels Bruxelles-National

£456Air Canada

Sun, 27 Sep - Sat, 28 Nov

20:15 - 08:35YYZ Toronto Pearson Intl-LHR London Heathrow

7h 20mdirect

07:40 - 14:55LHR London Heathrow-YYZ Toronto Pearson Intl

12h 15m1 stop Munich Franz Josef Strauss

£468Lufthansa

Sun, 27 Sep - Thu, 8 Oct

23:50 - 11:50YYZ Toronto Pearson Intl-LHR London Heathrow

7h 00mdirect

17:40 - 20:30LHR London Heathrow-YYZ Toronto Pearson Intl

7h 50mdirect

£478Lufthansa

Sat, 26 Sep - Tue, 12 Jan

22:55 - 11:10YYZ Toronto Pearson Intl-LHR London Heathrow

7h 15mdirect

06:30 - 15:40LHR London Heathrow-YYZ Toronto Pearson Intl

14h 10m1 stop Amsterdam Schiphol

£480KLM

Sun, 27 Sep - Sun, 4 Oct

22:55 - 11:10YYZ Toronto Pearson Intl-LHR London Heathrow

7h 15mdirect

17:45 - 20:35LHR London Heathrow-YYZ Toronto Pearson Intl

7h 50mdirect

£483KLM

Useful Info

Low season	January
High season	December
Cheapest flight	£190

Best time to beat the crowds (21% less expensive on average)

Most popular time to fly (12% more expensive on average)

Flight from Ottawa 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-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.

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.

Gatwick

Eastbourne

Milton Keynes

Hounslow

Luton

Southend-on-Sea

Newport

Folkestone

Winchester

Croydon

Slough

Stansted

Colchester

Chichester

Crawley

Maidstone

Hastings

Chelmsford

Bedford

Richmond

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£190 Find Cheap Flights from Ontario to London – Compare and Save

Cheap Flights from Ontario to London

Recent return 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 - Cheap tickets from Ontario to London

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 hire

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