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Cheap flights from London Heathrow Airport to Ontario from C$ 461

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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YYZ
3 Aug — 10 Aug1
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 29 July 2025.

Round-trip from

C$ 637

One-way from

C$ 461

Popular in

December

Cheapest in

February

Average price

C$ 969

Good round-trip deal

C$ 738 or less

Good one-way deal

C$ 879 or less
Lufthansa
  • Lufthansa
  • 20/9-22/9
  • 2 total stops
  • 53h 13m total
  • London to Ontario
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4/9
  • 4/9
  • 2 total stops
  • 15h 50m total
  • London to Ontario
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Highest demand for flights based on searches. 2% potential increase in price (C$ 32 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from London Heathrow to Ontario.
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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 29 July 2025.

Sat 20/95:40 p.m.LHR - YUL
1 stop32h 13mLufthansa
Mon 22/98:40 p.m.YUL - LHR
1 stop21h 00mLufthansa
Deal found 29/7C$ 637
Wed 24/96:00 a.m.LHR - YUL
1 stop14h 00mSWISS
Wed 15/104:40 p.m.YUL - LHR
1 stop13h 45mSWISS
Deal found 27/7C$ 638
Fri 19/96:00 a.m.LHR - YYZ
1 stop12h 50mAir Canada
Mon 29/98:30 p.m.YYZ - LHR
Nonstop7h 05mAir Canada
Deal found 27/7C$ 649
Sat 6/96:50 a.m.LHR - YTZ
2 stops12h 55mMultiple Airlines
Sat 13/97:25 a.m.YTZ - LHR
1 stop18h 05mMultiple Airlines
Deal found 27/7C$ 650
Wed 24/91:30 p.m.LHR - YYZ
1 stop11h 15mLufthansa
Tue 30/96:20 p.m.YYZ - LHR
Nonstop7h 15mLufthansa
Deal found 28/7C$ 652
Thu 4/96:50 a.m.LHR - YTZ
2 stops12h 55mAir Canada
Sat 13/93:25 p.m.YTZ - LHR
1 stop10h 05mAir Canada
Deal found 27/7C$ 652
Thu 11/99:00 a.m.LHR - YYZ
1 stop14h 30mMultiple Airlines
Wed 17/911:35 p.m.YYZ - LHR
Nonstop7h 15mMultiple Airlines
Deal found 27/7C$ 656
Thu 11/910:30 a.m.LHR - YUL
1 stop10h 30mMultiple Airlines
Thu 18/94:40 p.m.YUL - LHR
1 stop13h 45mMultiple Airlines
Deal found 27/7C$ 656
Fri 19/95:15 p.m.LHR - YYZ
Nonstop7h 55mBritish Airways
Sun 21/96:05 p.m.YYZ - LHR
Nonstop7h 10mBritish Airways
Deal found 27/7C$ 658
Tue 23/97:30 p.m.LHR - YYZ
1 stop23h 20mAustrian Airlines
Fri 17/105:45 p.m.YYZ - LHR
1 stop15h 35mAustrian Airlines
Deal found 28/7C$ 663
Thu 6/117:30 p.m.LHR - YYZ
1 stop25h 10mScandinavian Airlines
Tue 18/115:10 p.m.YYZ - LHR
2 stops16h 25mScandinavian Airlines
Deal found 27/7C$ 664
Tue 23/95:10 p.m.LHR - YYZ
1 stop28h 15mSWISS
Sun 12/106:00 p.m.YYZ - LHR
2 stops22h 30mSWISS
Deal found 28/7C$ 665

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 29 July 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

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Sat 20/9

5:40 p.m.-8:53 p.m.

1 stop32h 13m

Montreal Pierre Elliott Trudeau Intl

Mon 22/9

8:40 p.m.-10:40 p.m.

1 stop21h 00m

C$ 637

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Wed 24/9

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

1 stop14h 00m

Montreal Pierre Elliott Trudeau Intl

Wed 15/10

4:40 p.m.-11:25 a.m.

1 stop13h 45m

C$ 638

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Fri 19/9

6:00 a.m.-1:50 p.m.

1 stop12h 50m

Toronto Pearson Intl

Mon 29/9

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

Nonstop7h 05m

C$ 649

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Sat 6/9

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

2 stops12h 55m

Toronto Island

Sat 13/9

7:25 a.m.-6:30 a.m.

1 stop18h 05m

C$ 650

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Wed 24/9

1:30 p.m.-7:45 p.m.

1 stop11h 15m

Toronto Pearson Intl

Tue 30/9

6:20 p.m.-6:35 a.m.

Nonstop7h 15m

C$ 652

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Thu 4/9

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

2 stops12h 55m

Toronto Island

Sat 13/9

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

1 stop10h 05m

C$ 652

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Thu 11/9

10:30 a.m.-4:00 p.m.

1 stop10h 30m

Montreal Pierre Elliott Trudeau Intl

Thu 18/9

4:40 p.m.-11:25 a.m.

1 stop13h 45m

C$ 656

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Fri 19/9

5:15 p.m.-8:10 p.m.

Nonstop7h 55m

Toronto Pearson Intl

Sun 21/9

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

Nonstop7h 10m

C$ 658

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Wed 17/9

7:25 a.m.-2:55 p.m.

1 stop12h 30m

Toronto Pearson Intl

Wed 24/9

11:35 p.m.-11:50 a.m.

Nonstop7h 15m

C$ 661

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Tue 23/9

6:00 a.m.-1:50 p.m.

1 stop12h 50m

Toronto Pearson Intl

Sun 19/10

3:00 p.m.-6:40 p.m.

2 stops22h 40m

C$ 663

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/7

Showing 1-10 of 50 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$ 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 29 July 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 29 July 2025.

The most flights from LHR to CAON are scheduled on a Monday (39 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (25 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 29 July 2025.
Read reviews from past customers who have flown Austrian Airlines,Air France, andSWISS from London Heathrow Airport to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
821 reviews
Check prices

Food

6.8

Crew

8.1

Boarding

7.6

Overall

7.6

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Austrian Airlines
7.6
Good
821 reviews
Austrian Airlines
7.6
Good
821 reviews
Check prices

Food

6.8

Crew

8.1

Boarding

7.6

Overall

7.6

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Air France
7.5
Good
1,465 reviews
Austrian Airlines
7.6
Good
821 reviews
Check prices

Food

6.8

Crew

8.1

Boarding

7.6

Overall

7.6

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
SWISS
7.5
Good
1,683 reviews
Austrian Airlines
7.6
Good
821 reviews
Check prices

Food

6.8

Crew

8.1

Boarding

7.6

Overall

7.6

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Virgin Atlantic
7.4
Good
655 reviews
Austrian Airlines
7.6
Good
821 reviews
Check prices

Food

6.8

Crew

8.1

Boarding

7.6

Overall

7.6

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
WestJet
7.2
Good
2,973 reviews
Austrian Airlines
7.6
Good
821 reviews
Check prices

Food

6.8

Crew

8.1

Boarding

7.6

Overall

7.6

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time

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$ 486 on TAP AIR PORTUGAL. Other airlines that offer cheap prices include WestJet from C$ 652 and Aer Lingus from C$ 804 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 (85%), Ethiopian Air (83%), Air Canada (81%).

  • 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$ 2,865, our data shows the cheapest flight currently is C$ 667. When looking at the most popular route, (London Heathrow - Toronto Pearson Intl), you can expect to pay C$ 584 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

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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.
Gatwick to Pearson Intl flights
Heathrow to Pearson Intl flights
Heathrow to Vancouver Intl flights
London City to Pearson Intl flights
Gatwick to Vancouver Intl flights
Luton to Pearson Intl flights
Stansted to Pearson Intl flights
Heathrow to Pierre Elliott Trudeau Intl flights
Heathrow to Calgary flights
London City to Vancouver Intl flights
London City to Pierre Elliott Trudeau Intl flights
Gatwick to Pierre Elliott Trudeau Intl flights
Gatwick to Calgary flights
Luton to Pierre Elliott Trudeau Intl flights
London City to Calgary flights
Heathrow to Halifax flights
Southend to Pearson Intl flights
Heathrow to Abbotsford flights
Stansted to Pierre Elliott Trudeau Intl flights
Heathrow to Ottawa flights
Luton to Calgary flights
Luton to Vancouver Intl flights
Southend to Pierre Elliott Trudeau Intl flights
Heathrow to Edmonton flights
Gatwick to Edmonton flights
Stansted to Calgary flights
Gatwick to Ottawa flights
Gatwick to Halifax flights
Heathrow to Winnipeg flights
Gatwick to Québec City flights
Gatwick to St. John's flights
Heathrow to Victoria flights
Gatwick to Winnipeg flights
Stansted to Edmonton flights
Heathrow to Hamilton flights
Luton to Edmonton flights
Gatwick to Kelowna flights
Heathrow 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 29 July 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapestC$ 562AverageC$ 919FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapestC$ 609AverageC$ 846FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapestC$ 644AverageC$ 849FlexibilityNo cancel feeOn-time70%
Search British Airways flights
TAP AIR PORTUGALCheapestC$ 647AverageC$ 993FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Virgin AtlanticCheapestC$ 647AverageC$ 815FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
DeltaCheapestC$ 647AverageC$ 767FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapestC$ 651AverageC$ 1,020FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air TransatCheapestC$ 652AverageC$ 843FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
United AirlinesCheapestC$ 703AverageC$ 1,249FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapestC$ 705AverageC$ 919FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

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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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