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Cheap flights from London Heathrow Airport to Ontario from £239

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 22/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YYZ
1 Jul — 8 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Ontario

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Ontario
Explore the most affordable flight options available from Heathrow to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 June 2026.

Thu 11/609:30
LHR
-
YOW
Nonstop7h 55m
Air Canada
Thu 18/618:55
YOW
-
LHR
Nonstop6h 35m
Air Canada
Deal found 27/5£372
Sun 21/606:50
LHR
-
YOW
2 stops17h 03m
Air Canada
Sun 28/617:30
YOW
-
LHR
1 stop22h 30m
Air Canada
Deal found 27/5£375
Wed 23/912:40
LHR
-
YOW
1 stop11h 00m
Air Canada
Thu 15/1018:55
YOW
-
LHR
Nonstop6h 35m
Air Canada
Deal found 27/5£382
Sat 20/612:40
LHR
-
YOW
1 stop11h 13m
Air Canada
Sat 27/621:05
YOW
-
LHR
Nonstop6h 30m
Air Canada
Deal found 27/5£383
Thu 11/609:30
LHR
-
YOW
Nonstop7h 55m
Air Canada
Sun 14/614:35
YOW
-
LHR
1 stop10h 55m
Air Canada
Deal found 28/5£384
Wed 17/612:40
LHR
-
YOW
1 stop11h 13m
Air Canada
Sun 21/615:10
YOW
-
LHR
1 stop10h 20m
Air Canada
Deal found 30/5£385
Mon 13/709:30
LHR
-
YYZ
1 stop10h 38m
Air Canada
Wed 22/717:30
YYZ
-
LHR
1 stop11h 30m
Air Canada
Deal found 30/5£426
Wed 1/716:50
LHR
-
YYZ
1 stop25h 30m
Multiple Airlines
Sun 9/821:35
YYZ
-
LHR
1 stop30h 30m
Multiple Airlines
Deal found 27/5£427
Thu 8/1006:50
LHR
-
YYZ
1 stop9h 55m
Air Canada
Mon 12/1021:25
YYZ
-
LHR
Nonstop7h 10m
Air Canada
Deal found 31/5£428
Wed 2/913:05
LHR
-
YYZ
1 stop14h 00m
Icelandair
Thu 10/920:45
YYZ
-
LHR
1 stop18h 35m
Icelandair
Deal found 30/5£429
Sat 31/1011:10
LHR
-
YTZ
1 stop14h 28m
Air Canada
Sun 8/1120:55
YTZ
-
LHR
1 stop28h 35m
Air Canada
Deal found 29/5£429
Wed 2/916:50
LHR
-
YYZ
1 stop25h 30m
Multiple Airlines
Sat 12/921:35
YYZ
-
LHR
1 stop16h 50m
Multiple Airlines
Deal found 28/5£429

Find flight deals from Heathrow to Ontario

Keep the following information in mind while searching for Heathrow to Ontario flight deals. Data was last updated 1 June 2026.

Round-trip from

£372

One-way from

£239

Popular in

December

Cheapest in

February

Average price

£429

Good round-trip deal

£469 or less

Good one-way deal

£399 or less
Air Canada
  • Air Canada
  • 11/6-18/6
  • Nonstop
  • 14h 30m total
  • London to Ontario
Search Deals
22/6
  • 22/6
  • 2 total stops
  • 27h 49m total
  • London to Ontario
Search Deals
Highest demand for flights based on searches. 0% potential increase in price (£2 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from London Heathrow to Ontario.
Search Deals
Price to beat on a one-way flight from London Heathrow to Ontario.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow 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 1 June 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Wed 11/11

07:30-17:59

2 stops15h 29m

Toronto Pearson Intl

Wed 18/11

14:50-09:10

2 stops13h 20m

£464

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Mon 22/6

08:40-15:00

1 stop11h 20m

Montreal Pierre Elliott Trudeau Intl

Mon 29/6

22:10-10:00

Nonstop6h 50m

£484

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Sat 12/9

14:10-21:30

1 stop12h 20m

Toronto Island

Mon 14/9

15:35-06:30

1 stop9h 55m

£484

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Sun 28/6

06:30-16:55

1 stop15h 25m

Montreal Pierre Elliott Trudeau Intl

Mon 6/7

21:00-13:45

1 stop11h 45m

£484

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Wed 23/9

09:30-16:00

1 stop11h 30m

Montreal Pierre Elliott Trudeau Intl

Sun 25/10

20:10-07:10

Nonstop7h 00m

£487

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Wed 23/9

20:05-15:00

1 stop23h 55m

Montreal Pierre Elliott Trudeau Intl

Sat 24/10

16:30-14:00

2 stops16h 30m

£488

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Sun 30/8

08:00-17:30

1 stop14h 30m

Montreal Pierre Elliott Trudeau Intl

Sat 5/9

18:30-11:55

1 stop12h 25m

£499

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Sat 13/6

09:30-12:00

Nonstop7h 30m

Montreal Pierre Elliott Trudeau Intl

Tue 30/6

18:40-06:30

Nonstop6h 50m

£500
Fastest return journey

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Mon 22/6

14:05-16:15

Nonstop7h 10m

Montreal Pierre Elliott Trudeau Intl

Mon 29/6

22:10-10:00

Nonstop6h 50m

£501

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Thu 25/6

20:50-17:20

1 stop25h 30m

Montreal Pierre Elliott Trudeau Intl

Thu 16/7

23:45-09:10

1 stop28h 25m

£505

Flights are sorted by cheapest return flights first.

Deals found on 31/5

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

Have a flexible travel schedule? Discover the best time to fly to Ontario from Heathrow 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 Heathrow Airport to Ontario

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

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Region of Ontario (average of £379). Flying from London Heathrow Airport to Region of Ontario in August is currently the most expensive (average of £590). 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 LHR to ON?

Find hourly flight availability from Heathrow 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 1 June 2026.

When flying from London Heathrow Airport 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 Heathrow Airport to Region of Ontario

Explore weekly flight availability from Heathrow 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 1 June 2026.

The most flights from LHR to CAON are scheduled on a Friday (39 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (19 on average).

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

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

The best time to book flights from London Heathrow Airport to Region of Ontario is 77 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 1 June 2026.
Read reviews from past customers who have flown with Virgin Atlantic,Air Canada, andIcelandair from London Heathrow Airport to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Crew

8.1

Boarding

7.7

Entertainment

7.5

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Virgin Atlantic
7.5
Good
689 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Crew

8.1

Boarding

7.7

Entertainment

7.5

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Air Canada
7.1
Good
11,107 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Crew

8.1

Boarding

7.7

Entertainment

7.5

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Icelandair
7.0
Good
663 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Crew

8.1

Boarding

7.7

Entertainment

7.5

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Lufthansa
6.8
Okay
8,031 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Crew

8.1

Boarding

7.7

Entertainment

7.5

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
British Airways
6.7
Okay
8,014 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Crew

8.1

Boarding

7.7

Entertainment

7.5

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Related info for your journey

Find useful and relevant information for your journey from Heathrow 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 Heathrow Airport to Region of Ontario?

    Airlines like United Airlines, Air Canada, and Virgin Atlantic fly from London Heathrow Airport to Region of Ontario in about 11h 20m. The time it takes to get you to your destination can typically vary by up to 4h 09m. There are 3239 mi between London Heathrow Airport and Region of Ontario. 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 London Heathrow Airport to Region of Ontario one-way?

    To fly one-way, consider booking your trip with KLM, which is currently one of the cheapest options available, starting at £181. Icelandair flights start at £199 while deals on TAP AIR PORTUGAL start at £238 one-way.

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

    The most popular flight routes from London Heathrow Airport to Region of Ontario are London Heathrow - Toronto Pearson Intl, London Heathrow - Toronto Island and London Heathrow - Montreal Pierre Elliott Trudeau Intl.

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

    The top 3 most reliable airlines when flying from London Heathrow Airport to Region of Ontario are United Airlines (85%), Lufthansa (85%) and MEA (84%).

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

    Looking for the cheapest flight from London Heathrow Airport to Region of Ontario? While on average our users pay £1,154, our data indicates the cheapest price to be £305. The most popular route (London Heathrow - Toronto Pearson Intl), is priced around £366.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Region of Ontario (average of £379). Flying from London Heathrow Airport to Region of Ontario in August is currently the most expensive (average of £590). 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 Heathrow to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Vancouver Intl flights
Heathrow to Pearson Intl flights
Gatwick to Pearson Intl flights
Gatwick to Vancouver Intl flights
Heathrow to Toronto Island flights
London City to Pearson Intl flights
Stansted to Pearson Intl flights
London City to Vancouver Intl flights
Stansted to Vancouver Intl flights
Gatwick to Toronto Island flights
Luton to Pearson Intl flights
Heathrow to Pierre Elliott Trudeau Intl flights
Heathrow to Calgary flights
Heathrow to Abbotsford flights
Southend to Pearson Intl flights
Gatwick to Pierre Elliott Trudeau Intl flights
Luton to Vancouver Intl flights
Gatwick to Calgary flights
London City to Calgary flights
Heathrow to Ottawa flights
Heathrow to Halifax flights
London City to Pierre Elliott Trudeau Intl flights
Stansted to Calgary flights
Stansted to Pierre Elliott Trudeau Intl flights
Luton to Calgary flights
Luton to Pierre Elliott Trudeau Intl flights
Stansted to Ottawa flights
Heathrow to Edmonton flights
Gatwick to Halifax flights
London City to Ottawa flights
Gatwick to Ottawa flights
Gatwick to Edmonton flights
Stansted to Halifax flights
Heathrow to Winnipeg flights
London City to Edmonton flights
Stansted to Edmonton flights
Luton to Halifax flights
London City to Halifax flights
Heathrow to Victoria flights
Heathrow to Kelowna flights
Gatwick to Winnipeg flights
Heathrow to Saskatoon flights
Gatwick to Kelowna flights
Luton to Edmonton flights
Heathrow to St. John's flights
London City to Kelowna flights
Stansted to Winnipeg flights
Heathrow to Québec City flights
Gatwick to Abbotsford flights

Top 10 airlines flying from Heathrow to Ontario

Discover the top 10 airlines that operate flights from Heathrow 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 1 June 2026.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest£271Average£345FlexibilityNo cancel feeOn-time79%
Search SWISS flights
IcelandairCheapest£312Average£414FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air FranceCheapest£319Average£551FlexibilityNo cancel feeOn-time77%
Search Air France flights
Air TransatCheapest£323Average£494FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
DeltaCheapest£323Average£613FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Aer LingusCheapest£325Average£545FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
TAP AIR PORTUGALCheapest£327Average£549FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Virgin AtlanticCheapest£333Average£481FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£338Average£533FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air CanadaCheapest£342Average£577FlexibilityNo cancel feeOn-time67%
Search Air Canada 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 Heathrow to Ontario?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Ontario from Heathrow today with Cheapflights!

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

Millions of users choose and trust Cheapflights to book the best flight deals from Heathrow 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 Heathrow to Ontario with no change fees?

Need flexible booking options for your flight to Ontario from Heathrow? 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 Heathrow to Ontario become cheaper?

Of course! You can now track prices for flights from Heathrow 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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