Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Ontario from C$ 407

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 17/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YYZ
20 Apr — 27 Apr1
1 adult

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 15 April 2025.

Round-trip from

C$ 580

One-way from

C$ 407

Popular in

August

Cheapest in

February

Average price

C$ 763

Good round-trip deal

C$ 727 or less

Good one-way deal

C$ 744 or less
Air Canada
  • Air Canada
  • 12/5-21/5
  • 4 total stops
  • 30h 50m total
  • London to Ontario
Search Deals
17/9
  • 17/9
  • 1 total stop
  • 13h 25m total
  • London to Ontario
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 162 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
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

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 15 April 2025.

Mon 12/59:30 a.m.LHR - YOW
2 stops15h 45mAir Canada
Wed 21/51:55 p.m.YOW - LHR
2 stops15h 05mAir Canada
Deal found 14/4C$ 580
Wed 9/712:40 p.m.LHR - YUL
2 stops18h 11mAir Canada
Sun 13/77:30 p.m.YUL - LHR
1 stop30h 00mAir Canada
Deal found 15/4C$ 590
Wed 9/712:40 p.m.LHR - YUL
2 stops17h 01mMultiple Airlines
Sun 13/76:55 p.m.YUL - LHR
Nonstop6h 35mMultiple Airlines
Deal found 15/4C$ 591
Tue 22/47:45 a.m.LHR - YOW
2 stops31h 13mUnited Airlines
Wed 14/59:50 a.m.YOW - LHR
2 stops18h 30mUnited Airlines
Deal found 14/4C$ 606
Wed 30/48:40 a.m.LHR - YYZ
1 stop12h 40mAir Canada
Wed 7/53:00 p.m.YYZ - LHR
1 stop10h 30mAir Canada
Deal found 15/4C$ 612
Fri 9/58:30 a.m.LHR - YUL
2 stops16h 15mUnited Airlines
Sat 17/59:15 a.m.YUL - LHR
2 stops16h 30mUnited Airlines
Deal found 15/4C$ 613
Fri 25/46:00 a.m.LHR - YYZ
1 stop15h 20mMultiple Airlines
Fri 2/53:00 p.m.YYZ - LHR
1 stop10h 30mMultiple Airlines
Deal found 15/4C$ 615
Thu 1/56:30 a.m.LHR - YYZ
1 stop11h 50mKLM
Sun 4/510:30 p.m.YYZ - LHR
Nonstop7h 10mKLM
Deal found 14/4C$ 617
Wed 30/46:15 a.m.LHR - YYZ
1 stop14h 25mBritish Airways
Wed 7/510:00 p.m.YYZ - LHR
Nonstop7h 15mBritish Airways
Deal found 15/4C$ 620
Wed 7/56:50 a.m.LHR - YTZ
2 stops15h 00mAir Canada
Sat 17/510:20 a.m.YTZ - LHR
2 stops15h 10mAir Canada
Deal found 15/4C$ 622
Fri 2/51:30 p.m.LHR - YYZ
1 stop11h 05mLufthansa
Mon 5/59:25 p.m.YYZ - LHR
Nonstop7h 10mLufthansa
Deal found 13/4C$ 624
Thu 24/48:40 a.m.LHR - YTZ
2 stops14h 10mMultiple Airlines
Sun 4/512:25 p.m.YTZ - LHR
1 stop13h 05mMultiple Airlines
Deal found 14/4C$ 626

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 15 April 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

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 12/5

9:30 a.m.-8:15 p.m.

2 stops15h 45m

Ottawa

Wed 21/5

1:55 p.m.-10:00 a.m.

2 stops15h 05m

C$ 580

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Wed 9/7

12:40 p.m.-1:51 a.m.

2 stops18h 11m

Montreal Pierre Elliott Trudeau Intl

Sun 13/7

7:30 p.m.-6:30 a.m.

1 stop30h 00m

C$ 590

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Wed 9/7

12:40 p.m.-12:41 a.m.

2 stops17h 01m

Montreal Pierre Elliott Trudeau Intl

Sun 13/7

6:55 p.m.-6:30 a.m.

Nonstop6h 35m

C$ 591

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 13/5

8:30 a.m.-9:35 p.m.

2 stops18h 05m

Ottawa

Tue 20/5

9:50 a.m.-6:45 a.m.

2 stops15h 55m

C$ 606

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Wed 30/4

8:40 a.m.-4:20 p.m.

1 stop12h 40m

Toronto Pearson Intl

Wed 7/5

3:00 p.m.-6:30 a.m.

1 stop10h 30m

C$ 612

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Fri 9/5

8:30 a.m.-7:45 p.m.

2 stops16h 15m

Montreal Pierre Elliott Trudeau Intl

Sat 17/5

9:15 a.m.-6:45 a.m.

2 stops16h 30m

C$ 613

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Fri 25/4

6:00 a.m.-4:20 p.m.

1 stop15h 20m

Toronto Pearson Intl

Fri 2/5

3:00 p.m.-6:30 a.m.

1 stop10h 30m

C$ 615

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Thu 1/5

6:30 a.m.-1:20 p.m.

1 stop11h 50m

Toronto Pearson Intl

Sun 4/5

10:30 p.m.-10:40 a.m.

Nonstop7h 10m

C$ 617

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Wed 30/4

6:15 a.m.-3:40 p.m.

1 stop14h 25m

Toronto Pearson Intl

Wed 7/5

10:00 p.m.-10:15 a.m.

Nonstop7h 15m

C$ 620

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Wed 7/5

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

2 stops15h 00m

Toronto Island

Sat 17/5

10:20 a.m.-6:30 a.m.

2 stops15h 10m

C$ 622

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/4

Showing 1-10 of 60 results
1
2
3
...
6

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$ 167). 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 15 April 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 15 April 2025.

The most flights from LHR to CAON are scheduled on a Tuesday (39 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (29 on average).

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Region of Ontario ranges from 51.0 - 83.0 mm per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

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 15 April 2025.
Read through reviews of airlines operating flights from London to Ontario, such as Delta, KLM and Finnair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,918 reviews
Check prices

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Delta
8.0
Very good
7,918 reviews
Delta
8.0
Very good
7,918 reviews
Check prices

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
KLM
7.8
Good
1,323 reviews
Delta
8.0
Very good
7,918 reviews
Check prices

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Finnair
7.6
Good
1,269 reviews
Delta
8.0
Very good
7,918 reviews
Check prices

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Austrian Airlines
7.6
Good
775 reviews
Delta
8.0
Very good
7,918 reviews
Check prices

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Azores Airlines
7.5
Good
65 reviews
Delta
8.0
Very good
7,918 reviews
Check prices

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

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.

  • 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$ 487 on TAP AIR PORTUGAL. Other airlines that offer cheap prices include SWISS from C$ 597 and Aer Lingus from C$ 608 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: Egyptair (90%), MEA (90%), Singapore Airlines (90%).

  • 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$ 1,834, our data shows the cheapest flight currently is C$ 666. When looking at the most popular route, (London Heathrow - Toronto Pearson Intl), you can expect to pay C$ 609 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$ 167). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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
Heathrow to Vancouver Intl flights
Gatwick to Pearson Intl flights
London City to Pearson Intl flights
Gatwick to Vancouver Intl flights
Heathrow to Calgary flights
London City to Vancouver Intl flights
Stansted to Pearson Intl flights
Heathrow to Pierre Elliott Trudeau Intl flights
Luton to Pearson Intl flights
Gatwick to Calgary flights
London City to Calgary flights
Gatwick to Pierre Elliott Trudeau Intl flights
Southend to Pearson Intl flights
Heathrow to Halifax flights
London City to Pierre Elliott Trudeau Intl flights
Heathrow to Abbotsford flights
Luton to Pierre Elliott Trudeau Intl flights
Heathrow to Ottawa flights
Stansted to Pierre Elliott Trudeau Intl flights
Heathrow to Edmonton flights
Luton to Calgary flights
Stansted to Calgary flights
Gatwick to Edmonton flights
Gatwick to Ottawa flights
Gatwick to Halifax flights
Luton to Vancouver Intl flights
Southend to Pierre Elliott Trudeau Intl flights
Gatwick to St. John's flights
Heathrow to Victoria flights
Heathrow to Winnipeg flights
Heathrow to St. John's flights
Heathrow to Québec City flights
Gatwick to Québec City flights
Gatwick to Winnipeg flights
Stansted to Ottawa flights
London City to Saskatoon flights
Heathrow to Saskatoon flights
Gatwick to Saskatoon flights
Heathrow to Hamilton 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 15 April 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapestC$ 596AverageC$ 828FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapestC$ 624AverageC$ 857FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
TAP AIR PORTUGALCheapestC$ 628AverageC$ 1,016FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
British AirwaysCheapestC$ 649AverageC$ 885FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapestC$ 656AverageC$ 818FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Scandinavian AirlinesCheapestC$ 665AverageC$ 930FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Air TransatCheapestC$ 669AverageC$ 859FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Air CanadaCheapestC$ 674AverageC$ 964FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 712AverageC$ 1,266FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapestC$ 715AverageC$ 928FlexibilityNo 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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.