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Cheap flights from Ontario to London from C$ 401

YYZ — LON
29 Nov — 6 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to London

Enter your travel dates to find the best prices.

Cheapest flights from Ontario to London

Tue 24/114:00 p.m. -
2 stops26h 55m
Mon 7/127:05 p.m. -
2 stops23h 45m
Deal found 29/10C$ 773
Sun 22/117:40 p.m. -
1 stop10h 10m
Tue 1/128:35 p.m. -
1 stop26h 40m
Deal found 29/10C$ 773
Thu 12/118:25 p.m. -
1 stop14h 55m
Sat 14/113:30 p.m. -
1 stop26h 30m
Deal found 26/10C$ 775
Fri 13/119:35 p.m. -
Nonstop7h 10m
Sat 21/1111:40 a.m. -
Nonstop8h 20m
Deal found 29/10C$ 775
Sun 15/117:40 p.m. -
1 stop18h 50m
Thu 3/1212:15 p.m. -
1 stop11h 00m
Deal found 29/10C$ 776
Tue 1/127:40 p.m. -
2 stops16h 00m
Tue 8/128:00 a.m. -
2 stops15h 15m
Deal found 28/10C$ 776
Wed 18/117:40 p.m. -
1 stop18h 50m
Tue 1/128:35 p.m. -
1 stop26h 40m
Deal found 29/10C$ 778
Sat 5/129:35 p.m. -
Nonstop7h 10m
Sun 13/1211:40 a.m. -
Nonstop8h 20m
Deal found 28/10C$ 778
Tue 1/127:40 p.m. -
2 stops21h 20m
Tue 8/127:00 a.m. -
2 stops16h 15m
Deal found 29/10C$ 779
Thu 26/117:40 p.m. -
1 stop18h 50m
Wed 2/128:35 p.m. -
1 stop26h 40m
Deal found 28/10C$ 779
Sun 15/117:40 p.m. -
1 stop10h 15m
Wed 25/1111:55 a.m. -
1 stop11h 20m
Deal found 26/10C$ 779
Tue 8/127:40 p.m. -
1 stop14h 20m
Sun 13/126:05 a.m. -
1 stop17h 10m
Deal found 29/10C$ 780

Find flight deals from Ontario to London

Round-trip from

C$ 773

One-way from

C$ 401

Popular in

December

Cheapest in

February

Average price

C$ 902

Good round-trip deal

C$ 789 or less

Good one-way deal

C$ 404 or less
Icelandair
  • Icelandair
  • 22/11-1/12
  • 2 total stops
  • 36h 50m total
  • Ontario to London
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WestJet
  • WestJet
  • 25/1-31/12
  • 2 total stops
  • 37h 55m total
  • Ontario to London
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Highest demand for flights based on searches. 2% potential increase in price (C$ 38 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 42 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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Price to beat on a round-trip flight from Ontario to London (LON).
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Price to beat on a one-way flight from Ontario to London (LON).
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Ontario to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoLondon

YYZ Toronto Pearson Intl - LHR London Heathrow

YYZLHR

Toronto Pearson Intl

Mon 25/1

5:55 p.m.-12:50 p.m.

2 stops37h 55m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 401

TorontoLondon

YTZ Toronto Island - LGW London Gatwick

YTZLGW

Toronto Island

Sun 29/11

5:50 p.m.-9:05 a.m.

3 stops34h 15m

London Gatwick

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 406

TorontoLondon

YYZ Toronto Pearson Intl - LTN London Luton

YYZLTN

Toronto Pearson Intl

Sat 12/12

6:45 p.m.-10:50 p.m.

1 stop23h 05m

London Luton

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 418

TorontoLondon

YTZ Toronto Island - LGW London Gatwick

YTZLGW

Toronto Island

Sun 22/11

5:50 p.m.-9:15 a.m.

3 stops34h 25m

London Gatwick

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 422

TorontoLondon

YYZ Toronto Pearson Intl - LGW London Gatwick

YYZLGW

Toronto Pearson Intl

Mon 30/11

10:45 p.m.-8:35 p.m.

2 stops16h 50m

London Gatwick

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 431

TorontoLondon

YYZ Toronto Pearson Intl - LTN London Luton

YYZLTN

Toronto Pearson Intl

Sun 15/11

8:15 p.m.-6:05 p.m.

1 stop16h 50m

London Luton

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 438

TorontoLondon

YYZ Toronto Pearson Intl - LGW London Gatwick

YYZLGW

Toronto Pearson Intl

Sat 12/12

6:45 p.m.-10:35 p.m.

1 stop22h 50m

London Gatwick

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 438

TorontoLondon

YTZ Toronto Island - LGW London Gatwick

YTZLGW

Toronto Island

Sun 15/11

7:45 a.m.-10:55 a.m.

3 stops46h 10m

London Gatwick

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 443

TorontoLondon

YYZ Toronto Pearson Intl - LTN London Luton

YYZLTN

Toronto Pearson Intl

Sun 8/11

8:15 p.m.-6:05 p.m.

1 stop16h 50m

London Luton

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 446

OttawaLondon

YOW Ottawa - LHR London Heathrow

YOWLHR

Ottawa

Tue 8/12

6:10 a.m.-12:50 p.m.

1 stop25h 40m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 449

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/10

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Ontario to London

Have a flexible travel schedule? Discover the best time to fly to London from Ontario with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Ontario to London

What is the cheapest month to book a flight from Region of Ontario to London?

Currently, February is the cheapest month in which you can book a flight from Region of Ontario to London (average of C$ 820). Flying from Region of Ontario to London in December is currently the most expensive (average of C$ 1,305). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ON to LON?

When flying from Region of Ontario to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Region of Ontario to London?

Airfare is below average for this route at the moment.
Region of Ontario to London flights typically cost between C$ 792 and C$ 1,000 in November.
The cheapest round-trip price found within the last 5 days was C$ 773 on Icelandair (22 Nov-1 Dec).

How far ahead should I book a flight from Region of Ontario to London?

To ensure you get the cheapest price possible for a flight from Region of Ontario to London, you should look to book at least 76 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Related info for your journey

  • How long is the flight from Region of Ontario to London?

    A quick flight from Region of Ontario to London can take about 7h 05m. Virgin Atlantic provides one of the quickest options available for as low as C$ 885. Region of Ontario and London are separated by a distance of 5702 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from Region of Ontario to London one-way?

    For one-way options, check prices for WestJet. According to our data, you can fly for as low as C$ 57. Users have also found prices from C$ 301 and C$ 372 on TAP AIR PORTUGAL and Air Transat, respectively.

  • What are the most popular routes from Region of Ontario to London?

    The most popular flight routes from Region of Ontario to London are Toronto Pearson Intl - London Heathrow, Toronto Pearson Intl - London Gatwick and Toronto Island - London Heathrow.

  • What are the most reliable airlines from Region of Ontario to London?

    Consider KLM (83%), SAUDIA (83%) or Air France (83%) when booking your flight. These represent the most reliable airlines when flying from Region of Ontario to London.

  • What are the cheapest flights from Region of Ontario to London?

    On average you can expect to pay C$ 2,250 for a flight from Region of Ontario to London. The cheapest flight overall is C$ 481 while the most popular route, (Toronto Pearson Intl - London Heathrow) is currently priced at C$ 703.

  • Can I find deals for flights from Ontario to London that include hotel bookings?

    Yes. In addition to deals on Ontario to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to London.

  • Can I find deals for business class flights from Ontario to London?

    Yes. Cheapflights offers flight deals from Ontario to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Region of Ontario to London?

    Currently, February is the cheapest month in which you can book a flight from Region of Ontario to London (average of C$ 820). Flying from Region of Ontario to London in December is currently the most expensive (average of C$ 1,305). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Romford
Twickenham
Ilford
Bromley
Sutton
Luton
Kingston upon Thames
Slough
Marlow
Cobham
Hounslow
Wembley
Watford
High Wycombe

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Alternative routes for Ontario to London

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Halifax to London City flights
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Winnipeg to Heathrow flights
Edmonton to London City flights
Vancouver Intl to Edinburgh flights
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Halifax to Luton flights

Top 10 airlines flying from Ontario to London

AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapestC$ 484AverageC$ 963FlexibilityNo cancel feeOn-time72%
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TAP AIR PORTUGALCheapestC$ 608AverageC$ 863FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
IcelandairCheapestC$ 643AverageC$ 781FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air TransatCheapestC$ 684AverageC$ 923FlexibilityNo cancel feeOn-time50%
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IberiaCheapestC$ 711AverageC$ 1,025FlexibilityNo cancel feeOn-time77%
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Aer LingusCheapestC$ 740AverageC$ 1,073FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
KLMCheapestC$ 772AverageC$ 981FlexibilityNo cancel feeOn-time75%
Search KLM flights
British AirwaysCheapestC$ 776AverageC$ 1,090FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapestC$ 777AverageC$ 952FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air FranceCheapestC$ 778AverageC$ 1,039FlexibilityNo cancel feeOn-time77%
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Fly with Cheapflights

How does Cheapflights help users find flights from Ontario to London?

Cheapflights helps you search for flights from Ontario to London via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Ontario to London?

Cheapflights simply makes it quick and affordable to book flights from Ontario to London by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Ontario to London with no change fees?

Need flexible booking options for your flight to London from Ontario? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Ontario to London become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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