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Cheap flights from London to Ontario from £265

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 24/1. Fares are subject to change and may not be available on all flights or dates of travel.
LON — YYZ
12 Feb — 19 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Ontario

Keep the following information in mind while searching for London to Ontario flight deals. Data was last updated 13 January 2026.

Round-trip from

£338

One-way from

£265

Popular in

December

Cheapest in

February

Average price

£392

Good round-trip deal

£391 or less

Good one-way deal

£281 or less
Air Canada
  • Air Canada
  • 7/2-21/2
  • 2 total stops
  • 46h 40m total
  • London to Ontario
Search Deals
24/1
  • 24/1
  • 3 total stops
  • 42h 35m total
  • London to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£21 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from London (LON) to Ontario.
Search Deals
Price to beat on a one-way flight from London (LON) to Ontario.
Search Deals

Find flight deals from London to Ontario

Enter your travel dates to find the best prices.

Cheapest flights from London to Ontario
Explore the most affordable flight options available from London to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 January 2026.

Fri 18/909:40
LGW
-
YTZ
1 stop15h 02m
Air Transat
Wed 23/921:00
YTZ
-
LGW
1 stop31h 50m
Air Transat
Deal found 12/1£338
Sat 7/214:50
LHR
-
YYZ
1 stop28h 00m
Air Canada
Sat 21/220:55
YYZ
-
LHR
1 stop18h 40m
Air Canada
Deal found 12/1£338
Sat 28/213:25
LHR
-
YTZ
1 stop13h 10m
Air Canada
Thu 5/321:55
YTZ
-
LHR
1 stop30h 25m
Air Canada
Deal found 12/1£338
Sat 28/209:00
LHR
-
YYZ
1 stop16h 05m
Air Canada
Tue 3/306:15
YYZ
-
LHR
1 stop9h 20m
Air Canada
Deal found 12/1£339
Sun 1/312:00
LHR
-
YTZ
1 stop11h 10m
Air Canada
Tue 31/317:30
YTZ
-
LHR
1 stop11h 30m
Air Canada
Deal found 12/1£339
Mon 19/120:05
LHR
-
YYZ
2 stops27h 45m
Multiple Airlines
Mon 26/116:00
YYZ
-
LHR
1 stop10h 10m
Multiple Airlines
Deal found 12/1£340
Wed 28/112:00
LHR
-
YTZ
1 stop14h 28m
Air Canada
Wed 4/218:45
YTZ
-
LHR
1 stop9h 35m
Air Canada
Deal found 12/1£340
Mon 14/911:35
LGW
-
YTZ
1 stop15h 37m
Air Transat
Mon 28/921:00
YTZ
-
LGW
1 stop31h 50m
Air Transat
Deal found 12/1£340
Thu 12/213:30
LHR
-
YYZ
1 stop11h 15m
Multiple Airlines
Thu 19/321:20
YYZ
-
LHR
Nonstop7h 10m
Multiple Airlines
Deal found 12/1£340
Thu 10/915:40
LGW
-
YYZ
1 stop11h 30m
Icelandair
Wed 16/923:20
YYZ
-
LGW
1 stop10h 20m
Icelandair
Deal found 11/1£340
Tue 3/209:50
LCY
-
YYZ
1 stop11h 25m
Multiple Airlines
Sun 8/218:15
YYZ
-
LCY
1 stop18h 25m
Multiple Airlines
Deal found 10/1£340
Wed 11/212:00
LHR
-
YTZ
1 stop11h 13m
Air Canada
Wed 4/318:45
YTZ
-
LHR
1 stop9h 35m
Air Canada
Deal found 10/1£340

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 13 January 2026.
Use the filters below to find and compare flights from London to Ontario that are best for you.

Fly from

London

Fly to

Ontario

Route

Depart

Return

Price

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Thu 5/3

06:00-13:50

1 stop12h 50m

Toronto Pearson Intl

Thu 2/4

18:30-06:35

Nonstop7h 05m

£338

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Sat 28/2

13:25-21:35

1 stop13h 10m

Toronto Island

Thu 5/3

21:55-09:20

1 stop30h 25m

£338

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Fri 6/3

12:00-21:20

1 stop14h 20m

Toronto Island

Wed 18/3

18:45-09:20

1 stop10h 35m

£341

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Fri 6/2

12:00-21:38

1 stop14h 38m

Toronto Island

Fri 13/2

18:45-09:20

1 stop9h 35m

£341

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Thu 23/4

17:45-20:35

Nonstop7h 50m

Toronto Pearson Intl

Wed 29/4

23:05-11:10

Nonstop7h 05m

£343

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Wed 4/2

11:40-15:00

Nonstop8h 20m

Toronto Pearson Intl

Thu 12/2

21:35-09:45

Nonstop7h 10m

£344

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Thu 5/2

11:40-15:00

Nonstop8h 20m

Toronto Pearson Intl

Mon 9/2

21:35-09:45

Nonstop7h 10m

£344

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Fri 6/2

11:40-15:00

Nonstop8h 20m

Toronto Pearson Intl

Sun 15/2

21:35-09:45

Nonstop7h 10m

£344

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Fri 6/2

11:40-15:00

Nonstop8h 20m

Toronto Pearson Intl

Sat 14/2

21:35-09:45

Nonstop7h 10m

£344

LondonToronto

LCY - YYZ

LCYYYZ

London City

Fri 23/1

09:20-16:25

1 stop12h 05m

Toronto Pearson Intl

Wed 28/1

20:25-12:55

1 stop11h 30m

£346

Flights are sorted by cheapest return flights first.

Deals found on 12/1

Showing 1-10 of 60 results
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Best time to book a flight from London to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from London with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Currently, January is the cheapest month in which you can book a flight from London to Region of Ontario (average of £236). Flying from London to Region of Ontario in December is currently the most expensive (average of £363). 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 LON to ON?

Find hourly flight availability from London to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 January 2026.

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

Weekly flight availability from London to Region of Ontario

Explore weekly flight availability from London to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 13 January 2026.

The most flights from LON to CAON are scheduled on a Monday (33 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (16 on average).

How much does it cost for a return flight from London to Region of Ontario?

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated 13 January 2026.
Read reviews from past customers who have flown with Air Transat, Virgin Atlantic, andAir Canada from London to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air Transat
7.7
Good
493 reviews
Check prices

Overall

7.7

Comfort

7.3

Boarding

7.9

Crew

8.4

Entertainment

7.1

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

YOW - GCM

The flight was delayed for 3.5 hours. No compensation for a meal voucher. We were positioned at the back of the plane and the toilets were not working properly. It was a foul smell coming from the toilet.
Air Transat
7.7
Good
493 reviews
Air Transat
7.7
Good
493 reviews
Check prices

Overall

7.7

Comfort

7.3

Boarding

7.9

Crew

8.4

Entertainment

7.1

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

YOW - GCM

The flight was delayed for 3.5 hours. No compensation for a meal voucher. We were positioned at the back of the plane and the toilets were not working properly. It was a foul smell coming from the toilet.
Virgin Atlantic
7.5
Good
678 reviews
Air Transat
7.7
Good
493 reviews
Check prices

Overall

7.7

Comfort

7.3

Boarding

7.9

Crew

8.4

Entertainment

7.1

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

YOW - GCM

The flight was delayed for 3.5 hours. No compensation for a meal voucher. We were positioned at the back of the plane and the toilets were not working properly. It was a foul smell coming from the toilet.
Air Canada
7.1
Good
10,618 reviews
Air Transat
7.7
Good
493 reviews
Check prices

Overall

7.7

Comfort

7.3

Boarding

7.9

Crew

8.4

Entertainment

7.1

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

YOW - GCM

The flight was delayed for 3.5 hours. No compensation for a meal voucher. We were positioned at the back of the plane and the toilets were not working properly. It was a foul smell coming from the toilet.
Lufthansa
6.8
Okay
7,709 reviews
Air Transat
7.7
Good
493 reviews
Check prices

Overall

7.7

Comfort

7.3

Boarding

7.9

Crew

8.4

Entertainment

7.1

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

YOW - GCM

The flight was delayed for 3.5 hours. No compensation for a meal voucher. We were positioned at the back of the plane and the toilets were not working properly. It was a foul smell coming from the toilet.
British Airways
6.7
Okay
7,669 reviews
Air Transat
7.7
Good
493 reviews
Check prices

Overall

7.7

Comfort

7.3

Boarding

7.9

Crew

8.4

Entertainment

7.1

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

YOW - GCM

The flight was delayed for 3.5 hours. No compensation for a meal voucher. We were positioned at the back of the plane and the toilets were not working properly. It was a foul smell coming from the toilet.

Related info for your journey

Find useful and relevant information for your journey from London to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Air Canada, Virgin Atlantic, and Air Transat can get you from London to Region of Ontario in just under 7h 50m. Your travel time can differ by up to 5h. There are 3543 mi between London and Region of Ontario. This flight may include one or multiple stops.

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

    The cheapet airlines for a one-way flight from London to Region of Ontario are KLM (£190), Air Transat (£203), and Scandinavian Airlines (£208).

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

    The most popular route from London to Region of Ontario is London Heathrow - Toronto Pearson Intl. You may also consider London Gatwick - Toronto Pearson Intl or London Heathrow - Toronto Island.

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

    The top 3 most reliable airlines when flying from London to Region of Ontario are KLM (94%), Air France (94%) and Delta (94%).

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

    The cheapest flight price from London to Region of Ontario is £281. On average you can expect to pay £1,045. The most popular route, (London Heathrow - Toronto Pearson Intl), can usually be booked for £276.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from London to Ontario 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 London to Region of Ontario?

    Currently, January is the cheapest month in which you can book a flight from London to Region of Ontario (average of £236). Flying from London to Region of Ontario in December is currently the most expensive (average of £363). 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

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Alternative routes for London to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Luton to Pierre Elliott Trudeau Intl flights
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Heathrow to Winnipeg flights
London City to Edmonton flights
Gatwick to Ottawa flights
London City to Ottawa flights
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Birmingham to Vancouver Intl flights

Top 10 airlines flying from London to Ontario

Discover the top 10 airlines that operate flights from London to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 13 January 2026.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest£258Average£265FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
SWISSCheapest£271Average£338FlexibilityNo cancel feeOn-time79%
Search SWISS flights
IcelandairCheapest£293Average£395FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Scandinavian AirlinesCheapest£298Average£441FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Air TransatCheapest£300Average£429FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Air CanadaCheapest£304Average£515FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapest£306Average£498FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Aer LingusCheapest£314Average£501FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
LufthansaCheapest£315Average£454FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
TAP AIR PORTUGALCheapest£327Average£531FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

When you search for this flight from London to Ontario, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Millions of users choose and trust Cheapflights to book the best flight deals from London to Ontario for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Certainly. Search results for flights to Ontario from London shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Of course! You can now track prices for flights from London to Ontario and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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