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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

C$ 343 CHEAP FLIGHTS from Ontario to London

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Cheapest round-trip

C$ 662

Typical prices: C$ 877-C$ 1,045

TAP AIR PORTUGAL

Mon 9/2Mon 16/3

YUL - LHR • 1 stop

Cheapest direct flights

C$ 707

Typical prices: C$ 664-C$ 799

Air Transat

Mon 23/2Fri 27/2

YYZ - LGW • Direct

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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

Mon, 9 Feb - Mon, 16 Mar

9:45 p.m. - 5:30 p.m.

YUL

LHR

14h 45m

1 stop

8:15 a.m. - 9:15 p.m.

LHR

YUL

17h 00m

1 stop

C$ 662TAP AIR PORTUGAL

Fri, 22 May - Fri, 5 Jun

10:45 p.m. - 3:40 p.m.

YUL

LGW

11h 55m

1 stop

10:35 a.m. - 9:10 p.m.

LGW

YUL

15h 35m

1 stop

C$ 666TAP AIR PORTUGAL

Sun, 1 Mar - Thu, 12 Mar

7:40 p.m. - 10:50 a.m.

YYZ

LHR

10h 10m

1 stop

12:15 p.m. - 7:15 p.m.

LHR

YYZ

11h 00m

1 stop

C$ 698Icelandair

Tue, 24 Feb - Thu, 5 Mar

9:05 p.m. - 6:40 p.m.

YYZ

STN

16h 35m

2 stops

6:30 a.m. - 2:10 p.m.

STN

YYZ

12h 40m

1 stop

C$ 698Multiple Airlines

Wed, 25 Feb - Thu, 5 Mar

7:40 p.m. - 10:50 a.m.

YYZ

LHR

10h 10m

1 stop

12:15 p.m. - 6:15 p.m.

LHR

YYZ

11h 00m

1 stop

C$ 699Icelandair

Thu, 23 Apr - Mon, 27 Apr

8:45 p.m. - 11:25 p.m.

YYZ

LTN

21h 40m

2 stops

8:15 a.m. - 10:05 p.m.

LTN

YYZ

18h 50m

2 stops

C$ 699Multiple Airlines

Mon, 23 Feb - Fri, 27 Feb

9:35 p.m. - 9:45 a.m.

YYZ

LGW

7h 10mdirect

11:40 a.m. - 3:00 p.m.

LGW

YYZ

8h 20mdirect

C$ 707Air Transat

Wed, 4 Mar - Wed, 11 Mar

9:35 p.m. - 9:45 a.m.

YYZ

LGW

7h 10mdirect

11:40 a.m. - 4:00 p.m.

LGW

YYZ

8h 20mdirect

C$ 710Air Transat

Tue, 12 May - Wed, 20 May

6:55 p.m. - 9:50 a.m.

YTZ

LGW

9h 55m

1 stop

11:35 a.m. - 10:20 p.m.

LGW

YTZ

15h 45m

1 stop

C$ 721Porter Airlines

Tue, 5 May - Wed, 20 May

6:55 p.m. - 9:50 a.m.

YTZ

LGW

9h 55m

1 stop

11:35 a.m. - 8:20 p.m.

LGW

YTZ

13h 45m

1 stop

C$ 732Porter Airlines

Useful Info

Low season	November
High season	July
Cheapest flight	C$ 343

Best time to beat the crowds (7% less expensive on average)

Most popular time to fly (3% more expensive on average)

Flight from Montreal to London Gatwick Airport

CFlew with Air Canada

YYZ

LHR

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

YYZ

LGW

Sep 2024

Pack food for yourself before boarding Air Transat. Blankets, pillows and headphones are not given for free.

GerhardFlew with British Airways

YYZ

LHR

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

YYZ

LHR

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

YYZ

LHR

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

YYZ

LHR

Apr 2024

Pack in ur carryon bag and don’t waste ur money to pay for check in

Verified travelerFlew with Lufthansa

YYZ

LHR

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

Crawley

Slough

Dover

Guildford

Watford

Croydon

Milton Keynes

Richmond

St. Albans

Ilford

Borehamwood

Winchester

Canterbury

Bedford

Everything you need to know for your flight to London

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Cabin class types available on flights to Ontario

First Class flights to Londonfrom C$ 2,578

Business Class flights to Londonfrom C$ 2,802

Premium Economy Class flights to Londonfrom C$ 1,966

Economy Class flights to Londonfrom C$ 100

C$ 343 Find Cheap Flights from Ontario to London

KAYAK searches hundreds of travel sites at once for deals on flights to London

Everything you should know

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

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

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 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?

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