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Cheap flights from London Heathrow Airport to Ontario from C$ 428

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 13/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YYZ
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Heathrow to Ontario

Keep the following information in mind while searching for Heathrow to Ontario flight deals. Data was last updated 11 September 2025.

Round-trip from

C$ 650

One-way from

C$ 428

Popular in

December

Cheapest in

February

Average price

C$ 715

Good round-trip deal

C$ 751 or less

Good one-way deal

C$ 836 or less
Air Canada
  • Air Canada
  • 26/9-29/10
  • Nonstop
  • 15h 15m total
  • London to Ontario
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13/11
  • 13/11
  • 1 total stop
  • 33h 25m total
  • London to Ontario
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (C$ 40 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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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.
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Find flight deals from Heathrow to Ontario

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 11 September 2025.

Fri 26/95:40 p.m.LHR - YYZ
Nonstop7h 50mAir Canada
Wed 29/1011:55 p.m.YYZ - LHR
Nonstop7h 25mAir Canada
Deal found 11/9C$ 650
Thu 30/106:50 a.m.LHR - YTZ
2 stops31h 05mAir Canada
Thu 13/118:50 a.m.YTZ - LHR
2 stops17h 20mAir Canada
Deal found 11/9C$ 650
Fri 10/104:00 p.m.LHR - YYZ
Nonstop7h 55mAir Canada
Fri 17/1011:35 p.m.YYZ - LHR
Nonstop7h 15mAir Canada
Deal found 10/9C$ 651
Wed 5/119:00 a.m.LHR - YTZ
2 stops17h 35mAir Canada
Sat 15/118:50 a.m.YTZ - LHR
2 stops17h 20mAir Canada
Deal found 10/9C$ 651
Fri 19/96:00 a.m.LHR - YYZ
1 stop11h 50mAir Canada
Mon 6/1011:15 p.m.YYZ - LHR
2 stops16h 45mAir Canada
Deal found 11/9C$ 653
Thu 30/106:50 a.m.LHR - YTZ
2 stops17h 05mAir Canada
Mon 17/113:30 p.m.YTZ - LHR
1 stop10h 40mAir Canada
Deal found 11/9C$ 653
Fri 31/109:00 a.m.LHR - YYZ
1 stop10h 35mAir Canada
Fri 7/1111:00 p.m.YYZ - LHR
Nonstop7h 20mAir Canada
Deal found 11/9C$ 654
Sat 20/96:50 a.m.LHR - YTZ
2 stops14h 55mAir Canada
Sun 5/1010:20 a.m.YTZ - LHR
2 stops15h 10mAir Canada
Deal found 10/9C$ 654
Thu 18/98:40 a.m.LHR - YYZ
1 stop12h 45mAir Canada
Sat 4/106:20 p.m.YYZ - LHR
Nonstop7h 15mAir Canada
Deal found 10/9C$ 655
Mon 22/96:50 a.m.LHR - YTZ
2 stops14h 55mAir Canada
Mon 29/912:25 p.m.YTZ - LHR
2 stops14h 30mAir Canada
Deal found 9/9C$ 655
Wed 24/96:00 a.m.LHR - YYZ
1 stop12h 50mAir Canada
Mon 29/911:35 p.m.YYZ - LHR
Nonstop7h 15mAir Canada
Deal found 11/9C$ 657
Thu 9/106:00 a.m.LHR - YTZ
2 stops15h 45mAir Canada
Thu 16/107:20 p.m.YTZ - LHR
2 stops20h 40mAir Canada
Deal found 11/9C$ 657

Cheapflights Fare Finder

 
Customize 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 629,999 searches. Data last updated 11 September 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Ontario that are best for you.

Fly from

Heathrow

Fly to

Ontario

Route

Depart

Return

Price

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Fri 6/3

9:00 a.m.-4:10 p.m.

1 stop12h 10m

Toronto Pearson Intl

Fri 13/3

8:30 p.m.-8:35 p.m.

2 stops20h 05m

C$ 653

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Thu 30/10

6:50 a.m.-4:55 p.m.

2 stops14h 05m

Toronto Island

Wed 26/11

3:30 p.m.-7:10 a.m.

1 stop10h 40m

C$ 655

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Thu 9/10

6:50 a.m.-2:45 p.m.

2 stops12h 55m

Toronto Island

Tue 21/10

3:25 p.m.-6:30 a.m.

1 stop10h 05m

C$ 655

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Sun 9/11

1:45 p.m.-5:55 p.m.

2 stops33h 10m

Toronto Island

Wed 19/11

12:30 p.m.-7:10 a.m.

1 stop13h 40m

C$ 658

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Fri 16/1

9:00 a.m.-5:55 p.m.

2 stops13h 55m

Toronto Island

Fri 23/1

10:30 a.m.-7:10 a.m.

1 stop15h 40m

C$ 658

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Tue 3/3

9:00 a.m.-5:55 p.m.

2 stops13h 55m

Toronto Island

Sun 8/3

12:30 p.m.-7:10 a.m.

1 stop14h 40m

C$ 658

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Tue 23/9

8:45 a.m.-9:34 p.m.

2 stops17h 49m

Toronto Island

Sun 28/9

8:50 a.m.-6:30 a.m.

2 stops16h 40m

C$ 658

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Fri 7/11

2:50 p.m.-7:55 p.m.

2 stops34h 05m

Toronto Island

Sun 9/11

6:45 p.m.-7:10 a.m.

2 stops31h 25m

C$ 662

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Thu 13/11

6:35 a.m.-6:23 p.m.

2 stops16h 48m

Montreal Pierre Elliott Trudeau Intl

Sun 16/11

3:10 p.m.-6:30 a.m.

1 stop10h 20m

C$ 685

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Sat 8/11

6:00 p.m.-9:10 p.m.

Nonstop8h 10m

Toronto Pearson Intl

Thu 27/11

8:25 p.m.-8:30 a.m.

Nonstop7h 05m

C$ 686

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 60 results
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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 round-trip 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, January is the cheapest month in which you can book a flight from London Heathrow Airport to Region of Ontario (average of C$ 168). Flying from London Heathrow Airport to Region of Ontario in July is currently the most expensive (average of C$ 258). 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 11 September 2025.

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 11 September 2025.

The most flights from LHR to CAON are scheduled on a Thursday (39 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (23 on average).

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 11 September 2025.
Read reviews from past customers who have flown United Airlines,Virgin Atlantic, andAir Canada from London Heathrow Airport to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews
Check prices

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Boarding

7.7

Reviews

1 / 20
6.0
Good

Miz,Oct 2024

EWR - YYZ

I booked on United but it was really Air Canada. It was very confusing when I went to the airport. The ride to NY was very turbulent and shaky. The ride back was better. It would be nicer with more leg room and to get rid of the tilting the seat back thing. Fine for an hour flight but any longer would have been not great. Please put subtitles on the programs so we don;t have t use headphones if we forget them.
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews
Check prices

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Boarding

7.7

Reviews

1 / 20
6.0
Good

Miz,Oct 2024

EWR - YYZ

I booked on United but it was really Air Canada. It was very confusing when I went to the airport. The ride to NY was very turbulent and shaky. The ride back was better. It would be nicer with more leg room and to get rid of the tilting the seat back thing. Fine for an hour flight but any longer would have been not great. Please put subtitles on the programs so we don;t have t use headphones if we forget them.
Virgin Atlantic
7.4
Good
664 reviews
United Airlines
7.4
Good
8,937 reviews
Check prices

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Boarding

7.7

Reviews

1 / 20
6.0
Good

Miz,Oct 2024

EWR - YYZ

I booked on United but it was really Air Canada. It was very confusing when I went to the airport. The ride to NY was very turbulent and shaky. The ride back was better. It would be nicer with more leg room and to get rid of the tilting the seat back thing. Fine for an hour flight but any longer would have been not great. Please put subtitles on the programs so we don;t have t use headphones if we forget them.
Air Canada
7.1
Good
10,000 reviews
United Airlines
7.4
Good
8,937 reviews
Check prices

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Boarding

7.7

Reviews

1 / 20
6.0
Good

Miz,Oct 2024

EWR - YYZ

I booked on United but it was really Air Canada. It was very confusing when I went to the airport. The ride to NY was very turbulent and shaky. The ride back was better. It would be nicer with more leg room and to get rid of the tilting the seat back thing. Fine for an hour flight but any longer would have been not great. Please put subtitles on the programs so we don;t have t use headphones if we forget them.
Lufthansa
6.8
Okay
7,409 reviews
United Airlines
7.4
Good
8,937 reviews
Check prices

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Boarding

7.7

Reviews

1 / 20
6.0
Good

Miz,Oct 2024

EWR - YYZ

I booked on United but it was really Air Canada. It was very confusing when I went to the airport. The ride to NY was very turbulent and shaky. The ride back was better. It would be nicer with more leg room and to get rid of the tilting the seat back thing. Fine for an hour flight but any longer would have been not great. Please put subtitles on the programs so we don;t have t use headphones if we forget them.
British Airways
6.7
Okay
7,361 reviews
United Airlines
7.4
Good
8,937 reviews
Check prices

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Boarding

7.7

Reviews

1 / 20
6.0
Good

Miz,Oct 2024

EWR - YYZ

I booked on United but it was really Air Canada. It was very confusing when I went to the airport. The ride to NY was very turbulent and shaky. The ride back was better. It would be nicer with more leg room and to get rid of the tilting the seat back thing. Fine for an hour flight but any longer would have been not great. Please put subtitles on the programs so we don;t have t use headphones if we forget them.

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?

    Air Canada, Lufthansa, and Virgin Atlantic can get you from London Heathrow Airport to Region of Ontario in just under 12h 10m. Your travel time can differ by up to 4h 38m. The distance between London Heathrow Airport and Region of Ontario is about 5702 km. Both multi-stop and direct flights can be found to your destination and back.

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

    One-way options have recently been found by users for as low as C$ 507 on Finnair. Other airlines that offer cheap prices include British Airways from C$ 510 and Delta from C$ 546 one-way.

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

    The most popular route from London Heathrow Airport to Region of Ontario is London Heathrow - Toronto Pearson Intl. You may also consider London Heathrow - Toronto Island or London Heathrow - Montreal Pierre Elliott Trudeau Intl.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London Heathrow Airport to Region of Ontario on time: Thai Airways (77%), KLM (77%), Air France (77%).

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

    While on average a flight from London Heathrow Airport to Region of Ontario is generally C$ 1,039, our data shows the cheapest flight currently is C$ 665. When looking at the most popular route, (London Heathrow - Toronto Pearson Intl), you can expect to pay C$ 545 for that flight.

  • 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 vacation 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, January is the cheapest month in which you can book a flight from London Heathrow Airport to Region of Ontario (average of C$ 168). Flying from London Heathrow Airport to Region of Ontario in July is currently the most expensive (average of C$ 258). 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 Pearson Intl flights
Gatwick to Pearson Intl flights
Heathrow to Vancouver Intl flights
London City to Pearson Intl flights
Heathrow to Pierre Elliott Trudeau Intl flights
Heathrow to Calgary flights
Luton to Pearson Intl flights
Stansted to Pearson Intl flights
Gatwick to Vancouver Intl flights
London City to Vancouver Intl flights
London City to Pierre Elliott Trudeau Intl flights
Gatwick to Calgary flights
Gatwick to Pierre Elliott Trudeau Intl flights
London City to Calgary flights
Luton to Pierre Elliott Trudeau Intl flights
Heathrow to Halifax flights
Heathrow to Abbotsford flights
Stansted to Pierre Elliott Trudeau Intl flights
Heathrow to Ottawa flights
Southend to Pearson Intl flights
Heathrow to Edmonton flights
Gatwick to Ottawa flights
Luton to Calgary flights
Luton to Vancouver Intl flights
Gatwick to Halifax flights
Gatwick to Edmonton flights
Southend to Pierre Elliott Trudeau Intl flights
Stansted to Calgary flights
Heathrow to Victoria flights
Gatwick to Kelowna flights
Gatwick to Québec City flights
Heathrow to Québec City flights
Heathrow to Winnipeg flights
Gatwick to Winnipeg flights
Gatwick to Victoria flights
Heathrow to Kelowna flights
Gatwick to St. John's 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 629,999 searches. Data last updated 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapestC$ 520AverageC$ 1,043FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
LufthansaCheapestC$ 570AverageC$ 867FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapestC$ 615AverageC$ 837FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air TransatCheapestC$ 631AverageC$ 839FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
British AirwaysCheapestC$ 645AverageC$ 854FlexibilityNo cancel feeOn-time70%
Search British Airways flights
TAP AIR PORTUGALCheapestC$ 649AverageC$ 961FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Air CanadaCheapestC$ 658AverageC$ 954FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Virgin AtlanticCheapestC$ 662AverageC$ 825FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
DeltaCheapestC$ 709AverageC$ 777FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapestC$ 712AverageC$ 1,064FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers 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?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Heathrow to Ontario. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Ontario.

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

Yes, we can. To see specific flights from Heathrow to Ontario with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Heathrow to Ontario 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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