Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Ontario from C$ 457

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 25/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YYZ
17 jun. — 24 jun.1
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 12 junio 2025.

Round-trip from

C$ 617

One-way from

C$ 457

Popular in

August

Cheapest in

February

Average price

C$ 736

Good round-trip deal

C$ 722 or less

Good one-way deal

C$ 679 or less
Air Canada
  • Air Canada
  • 12/9-21/9
  • 1 total stop
  • 18h 55m total
  • London to Ontario
Search Deals
25/6
  • 25/6
  • 2 total stops
  • 31h 19m total
  • London to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 141 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 12 junio 2025.

vie. 12/96:00 a.m.LHR - YYZ
1 stop11h 50mMultiple Airlines
dom. 21/98:30 p.m.YYZ - LHR
Nonstop7h 05mMultiple Airlines
Deal found 10/6C$ 617
sáb. 6/92:45 p.m.LHR - YYZ
1 stop11h 10mVirgin Atlantic
dom. 14/910:30 p.m.YYZ - LHR
Nonstop7h 10mVirgin Atlantic
Deal found 11/6C$ 618
jue. 3/79:30 a.m.LHR - YTZ
1 stop10h 16mAir Canada
mar. 15/74:10 p.m.YTZ - LHR
2 stops12h 50mAir Canada
Deal found 11/6C$ 618
lun. 22/98:30 a.m.LHR - YYZ
Nonstop7h 50mAir Canada
lun. 29/98:30 p.m.YYZ - LHR
Nonstop7h 05mAir Canada
Deal found 11/6C$ 619
mié. 17/92:05 p.m.LHR - YTZ
1 stop12h 29mMultiple Airlines
jue. 25/910:20 a.m.YTZ - LHR
1 stop15h 10mMultiple Airlines
Deal found 11/6C$ 619
mié. 8/105:10 p.m.LHR - YYZ
1 stop24h 40mSWISS
dom. 19/104:35 p.m.YYZ - LHR
1 stop10h 20mSWISS
Deal found 11/6C$ 623
vie. 27/612:40 p.m.LHR - YYZ
1 stop11h 07mLufthansa
lun. 14/74:00 p.m.YYZ - LHR
1 stop9h 30mLufthansa
Deal found 12/6C$ 628
sáb. 16/87:40 a.m.LHR - YYZ
1 stop13h 10mAer Lingus
jue. 4/95:20 p.m.YYZ - LHR
1 stop9h 40mAer Lingus
Deal found 10/6C$ 636
mié. 15/101:20 p.m.LHR - YYZ
Nonstop7h 40mBritish Airways
mié. 22/106:05 p.m.YYZ - LHR
Nonstop7h 10mBritish Airways
Deal found 11/6C$ 638
mar. 26/88:25 p.m.LHR - YUL
1 stop29h 35mLufthansa
mié. 3/96:35 p.m.YUL - LHR
1 stop17h 05mLufthansa
Deal found 12/6C$ 638
mar. 2/97:25 a.m.LHR - YUL
1 stop16h 25mMultiple Airlines
sáb. 13/96:55 p.m.YUL - LHR
Nonstop6h 35mMultiple Airlines
Deal found 12/6C$ 643
lun. 8/99:30 a.m.LHR - YUL
Nonstop7h 10mAir Canada
lun. 22/99:55 p.m.YUL - LHR
Nonstop6h 40mAir Canada
Deal found 11/6C$ 645

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 12 junio 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

vie. 12/9

6:00 a.m.-12:50 p.m.

1 stop11h 50m

Toronto Pearson Intl

dom. 21/9

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

Nonstop7h 05m

C$ 617

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

mar. 2/9

7:40 a.m.-3:50 p.m.

1 stop13h 10m

Toronto Pearson Intl

vie. 12/9

5:20 p.m.-10:20 a.m.

1 stop12h 00m

C$ 618

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

jue. 3/7

9:30 a.m.-2:46 p.m.

1 stop10h 16m

Toronto Island

mar. 15/7

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

2 stops12h 50m

C$ 618

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

lun. 22/9

8:30 a.m.-11:20 a.m.

Nonstop7h 50m

Toronto Pearson Intl

lun. 29/9

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

Nonstop7h 05m

C$ 619

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

mié. 17/9

9:30 a.m.-2:45 p.m.

1 stop10h 15m

Toronto Island

jue. 25/9

4:20 p.m.-6:30 a.m.

1 stop9h 10m

C$ 619

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

sáb. 6/9

2:45 p.m.-8:55 p.m.

1 stop11h 10m

Toronto Pearson Intl

sáb. 13/9

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

Nonstop7h 10m

C$ 621

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

mié. 8/10

5:10 p.m.-12:50 p.m.

1 stop24h 40m

Toronto Pearson Intl

dom. 19/10

4:35 p.m.-7:55 a.m.

1 stop10h 20m

C$ 623

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

vie. 27/6

12:40 p.m.-6:47 p.m.

1 stop11h 07m

Toronto Pearson Intl

vie. 11/7

8:20 p.m.-10:00 a.m.

1 stop8h 40m

C$ 626

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

mié. 15/10

1:20 p.m.-4:00 p.m.

Nonstop7h 40m

Toronto Pearson Intl

mié. 22/10

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

Nonstop7h 10m

C$ 638

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

mar. 26/8

8:25 p.m.-9:00 p.m.

1 stop29h 35m

Montreal Pierre Elliott Trudeau Intl

mié. 3/9

6:35 p.m.-4:40 p.m.

1 stop17h 05m

C$ 638

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

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$ 255). 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 12 junio 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 12 junio 2025.

The most flights from LHR to CAON are scheduled on a Thursday (39 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (22 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 12 junio 2025.
Read through reviews of airlines operating flights from London to Ontario, such as Delta, KLM and Austrian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews
Check prices

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews
Check prices

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,946 reviews
Check prices

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Austrian Airlines
7.6
Good
802 reviews
Delta
8.0
Very good
7,946 reviews
Check prices

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,946 reviews
Check prices

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,946 reviews
Check prices

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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$ 510 on Aer Lingus. Other airlines that offer cheap prices include TAP AIR PORTUGAL from C$ 554 and British Airways from C$ 648 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: Air Canada (90%), Egyptair (89%), SriLankan Airlines (89%).

  • 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$ 2,056, our data shows the cheapest flight currently is C$ 570. When looking at the most popular route, (London Heathrow - Toronto Pearson Intl), you can expect to pay C$ 396 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$ 255). 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
Gatwick to Pearson Intl flights
Heathrow to Vancouver Intl flights
Gatwick to Vancouver Intl flights
London City to Pearson Intl flights
Stansted to Pearson Intl flights
Luton to Pearson Intl flights
Heathrow to Calgary flights
Heathrow to Pierre Elliott Trudeau Intl flights
London City to Vancouver Intl flights
Gatwick to Pierre Elliott Trudeau Intl flights
Heathrow to Halifax flights
Gatwick to Calgary flights
Heathrow to Abbotsford flights
Southend to Pearson Intl flights
London City to Calgary flights
London City to Pierre Elliott Trudeau Intl flights
Luton to Pierre Elliott Trudeau Intl flights
Luton to Vancouver Intl flights
Stansted to Pierre Elliott Trudeau Intl flights
Heathrow to Ottawa flights
Southend to Pierre Elliott Trudeau Intl flights
Luton to Calgary flights
Stansted to Calgary flights
Gatwick to Halifax flights
Heathrow to Edmonton flights
Gatwick to Ottawa flights
Gatwick to Edmonton flights
Heathrow to Winnipeg flights
Heathrow to Hamilton flights
Gatwick to Winnipeg flights
Gatwick to St. John's flights
Stansted to Ottawa flights
Heathrow to Kelowna flights
Heathrow to St. John's flights
Heathrow to Québec City flights
Stansted to Edmonton flights
Gatwick to Victoria flights
Gatwick to Kelowna flights
Gatwick to Hamilton flights
Luton to Edmonton 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 12 junio 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapestC$ 589AverageC$ 929FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapestC$ 614AverageC$ 857FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
TAP AIR PORTUGALCheapestC$ 640AverageC$ 999FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
British AirwaysCheapestC$ 645AverageC$ 858FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapestC$ 645AverageC$ 811FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
DeltaCheapestC$ 645AverageC$ 765FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air TransatCheapestC$ 650AverageC$ 948FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Air CanadaCheapestC$ 655AverageC$ 941FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Scandinavian AirlinesCheapestC$ 668AverageC$ 1,141FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
United AirlinesCheapestC$ 700AverageC$ 1,245FlexibilityNo cancel feeOn-time69%
Search United 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.