Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Ontario to London Heathrow Airport from C$ 369

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 26/3. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — LHR
25 Feb — 4 Mar1
1 adult

Cheap flight deals from Ontario to Heathrow

Keep the following information in mind while searching for Ontario to Heathrow flight deals. Data was last updated 20 February 2025.

Round-trip from

C$ 655

One-way from

C$ 369

Popular in

December

Cheapest in

February

Average price

C$ 730

Good round-trip deal

C$ 852 or less

Good one-way deal

C$ 606 or less
Air Canada
  • Air Canada
  • 4/5-13/5
  • 3 total stops
  • 30h 55m total
  • Ontario to London
Search Deals
26/3
  • 26/3
  • 1 total stop
  • 15h 35m total
  • Ontario to London
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (C$ 22 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals
Price to beat on a round-trip flight from Ontario to London Heathrow.
Search Deals
Price to beat on a one-way flight from Ontario to London Heathrow.
Search Deals

Find flight deals from Ontario to Heathrow

Cheapest flights from Ontario to Heathrow
Explore the most affordable flight options available from Ontario to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 February 2025.

Sun 13/43:25 p.m.YTZ - LHR
1 stop10h 05mAir Canada
Sun 4/56:50 a.m.LHR - YTZ
2 stops13h 00mAir Canada
Deal found 20/2C$ 666
Wed 2/45:40 p.m.YYZ - LHR
1 stop11h 40mTAP AIR PORTUGAL
Tue 29/46:45 p.m.LHR - YYZ
1 stop24h 10mTAP AIR PORTUGAL
Deal found 20/2C$ 672
Mon 3/36:10 p.m.YYZ - LHR
Nonstop7h 20mAir Canada
Thu 13/36:00 a.m.LHR - YYZ
1 stop13h 35mAir Canada
Deal found 19/2C$ 673
Wed 12/310:20 a.m.YTZ - LHR
2 stops16h 50mMultiple Airlines
Wed 19/311:10 a.m.LHR - YTZ
2 stops14h 40mMultiple Airlines
Deal found 19/2C$ 707
Thu 24/46:20 p.m.YYZ - LHR
Nonstop7h 15mLufthansa
Thu 8/56:55 a.m.LHR - YYZ
1 stop16h 35mLufthansa
Deal found 20/2C$ 720
Sun 23/26:10 p.m.YYZ - LHR
Nonstop7h 20mMultiple Airlines
Mon 3/36:00 p.m.LHR - YYZ
Nonstop8h 00mMultiple Airlines
Deal found 20/2C$ 744
Sun 9/38:15 p.m.YUL - LHR
Nonstop6h 55mAir Canada
Tue 18/37:25 p.m.LHR - YUL
1 stop23h 30mAir Canada
Deal found 19/2C$ 800
Sun 23/26:40 p.m.YYZ - LHR
1 stop11h 35mUnited Airlines
Mon 3/34:20 p.m.LHR - YYZ
2 stops26h 04mUnited Airlines
Deal found 20/2C$ 811
Thu 22/510:25 p.m.YUL - LHR
Nonstop6h 35mMultiple Airlines
Wed 28/56:50 a.m.LHR - YUL
1 stop9h 55mMultiple Airlines
Deal found 20/2C$ 820
Sun 23/21:20 p.m.YYZ - LHR
1 stop12h 30mVirgin Atlantic
Mon 3/32:45 p.m.LHR - YYZ
1 stop11h 40mVirgin Atlantic
Deal found 20/2C$ 822
Tue 18/38:45 p.m.YYZ - LHR
1 stop10h 05mIcelandair
Wed 30/41:05 p.m.LHR - YYZ
1 stop13h 50mIcelandair
Deal found 20/2C$ 830
Thu 10/410:30 p.m.YYZ - LHR
Nonstop7h 10mDelta
Thu 17/45:50 p.m.LHR - YYZ
Nonstop7h 50mDelta
Deal found 20/2C$ 831

Find flights from Ontario to Heathrow within your budget

Customize your flight search to find flights from Ontario to Heathrow 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 20 February 2025.

Fly from

Ontario

Fly to

Heathrow

Route

Depart

Return

Price

TorontoLondon

YTZ - LHR

YTZLHR

Toronto Island

Sun 4/5

10:25 a.m.-6:30 a.m.

1 stop15h 05m

London Heathrow

Tue 13/5

6:00 a.m.-4:50 p.m.

2 stops15h 50m

C$ 655

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Wed 2/4

5:40 p.m.-10:20 a.m.

1 stop11h 40m

London Heathrow

Tue 29/4

6:45 p.m.-1:55 p.m.

1 stop24h 10m

C$ 672

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Mon 3/3

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

Nonstop7h 20m

London Heathrow

Thu 13/3

6:00 a.m.-3:35 p.m.

1 stop13h 35m

C$ 673

TorontoLondon

YTZ - LHR

YTZLHR

Toronto Island

Sun 16/3

3:25 p.m.-10:05 a.m.

2 stops14h 40m

London Heathrow

Wed 26/3

8:55 a.m.-9:50 p.m.

2 stops16h 55m

C$ 685

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Thu 24/4

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

Nonstop7h 15m

London Heathrow

Thu 8/5

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

1 stop16h 35m

C$ 720

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Sun 30/3

4:00 p.m.-6:30 a.m.

1 stop9h 30m

London Heathrow

Tue 8/4

3:50 p.m.-6:40 p.m.

Nonstop7h 50m

C$ 746

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Sun 9/3

8:15 p.m.-7:10 a.m.

Nonstop6h 55m

London Heathrow

Tue 18/3

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

1 stop23h 30m

C$ 800

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Thu 10/4

10:05 p.m.-10:20 a.m.

Nonstop7h 15m

London Heathrow

Mon 21/4

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

Nonstop7h 40m

C$ 808

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Sun 2/3

6:40 p.m.-11:15 a.m.

1 stop11h 35m

London Heathrow

Thu 6/3

3:10 p.m.-10:18 p.m.

1 stop12h 08m

C$ 811

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Sat 3/5

10:25 p.m.-10:00 a.m.

Nonstop6h 35m

London Heathrow

Wed 14/5

6:50 a.m.-11:45 a.m.

1 stop9h 55m

C$ 821

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/2

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

Best time to book a flight from Ontario to Heathrow

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

Travel insights for flights from Ontario to Heathrow

Get recent, data-driven insights about flights from Ontario to Heathrow including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Region of Ontario to London Heathrow Airport (average of C$ 560). Flying from Region of Ontario to London Heathrow Airport in July is currently the most expensive (average of C$ 874). 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 ON to LHR?

Find hourly flight availability from Ontario to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 20 February 2025.

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

Explore weekly flight availability from Ontario to Heathrow. 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 20 February 2025.

The most flights from CAON to LHR are scheduled on a Thursday (35 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (25 on average).

Rainfall in Heathrow by month

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

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 mm per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

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

If weather is an important factor for your trip to London Heathrow Airport, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 20 February 2025.
Get a feel of what it's like to fly with Delta, KLM and Finnair from Ontario to London by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,219 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,219 reviews
Delta
8.0
Very good
8,219 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
8,219 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.6
Good
1,274 reviews
Delta
8.0
Very good
8,219 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Azores Airlines
7.6
Good
62 reviews
Delta
8.0
Very good
8,219 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Austrian Airlines
7.6
Good
773 reviews
Delta
8.0
Very good
8,219 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Heathrow. 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 Region of Ontario to London Heathrow Airport one-way?

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as C$ 416. However, be on the lookout for offers from TAP AIR PORTUGAL and Azores Airlines, as they are both options that can get you from Region of Ontario to London Heathrow Airport for a low price.

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

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

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

    No one likes to see their flight delayed. When booking a flight from Region of Ontario to London Heathrow Airport consider choosing Singapore Airlines (67%), American Airlines (65%) or Aer Lingus (65%) as they are the most reliable in getting you off to your destination on time.

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

    On average you can expect to pay C$ 1,960 for a flight from Region of Ontario to London Heathrow Airport. The cheapest flight overall is C$ 583 while the most popular route, (Toronto Pearson Intl - London Heathrow) is currently priced at C$ 361.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Region of Ontario to London Heathrow Airport (average of C$ 560). Flying from Region of Ontario to London Heathrow Airport in July is currently the most expensive (average of C$ 874). 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

Travelling to a place near Ontario?

Book flights to Ontario if you plan to visit one of these locations
Brentford
Hounslow
Slough
Luton
Milton Keynes
Romford
Watford
Bromley
Bedford
Southall

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 Ontario to Heathrow

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

Top 10 airlines flying from Ontario to Heathrow

Discover the top 10 airlines that operate flights from Ontario to Heathrow. 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 20 February 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapestC$ 408AverageC$ 687FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
FinnairCheapestC$ 522AverageC$ 1,049FlexibilityNo cancel feeOn-time76%
Search Finnair flights
TAP AIR PORTUGALCheapestC$ 546AverageC$ 685FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Scandinavian AirlinesCheapestC$ 612AverageC$ 1,050FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Aer LingusCheapestC$ 622AverageC$ 824FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
IcelandairCheapestC$ 634AverageC$ 929FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Porter AirlinesCheapestC$ 665AverageC$ 810FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air TransatCheapestC$ 719AverageC$ 913FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
DeltaCheapestC$ 719AverageC$ 890FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapestC$ 728AverageC$ 1,104FlexibilityNo cancel feeOn-time67%
Search Air Canada 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 Ontario to Heathrow?

Cheapflights helps you search for flights from Ontario to Heathrow via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ontario to Heathrow flexibly with Cheapflights today.

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

Yes! Start tracking prices for Ontario to Heathrow flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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.