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Cheap flights from Ontario to London Heathrow Airport from C$ 298

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 29/3. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — LHR
26 Jan — 2 Feb1
1 adult

Cheap flight deals from Ontario to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (CAON) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 21 January 2025.

Round-trip from

C$ 681

One-way from

C$ 298

Good round-trip deal

C$ 916 or less

Good one-way deal

C$ 906 or less
Icelandair
  • Icelandair
  • 31/3-30/4
  • 2 total stops
  • 21h 10m total
  • Ontario to London
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WestJet
  • WestJet
  • 29/3
  • 1 total stop
  • 24h 50m total
  • Ontario to London
Search Deals
Price to beat on a round-trip flight from Ontario to London Heathrow.
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Price to beat on a one-way flight from Ontario to London Heathrow.
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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 21 January 2025.

Mon 31/38:50 p.m.YYZ - LHR
1 stop10h 05mIcelandair
Wed 30/41:05 p.m.LHR - YYZ
1 stop11h 05mIcelandair
Deal found 21/1C$ 681
Tue 18/32:00 p.m.YYZ - LHR
1 stop13h 10mMultiple Airlines
Mon 24/31:30 p.m.LHR - YYZ
1 stop11h 25mMultiple Airlines
Deal found 21/1C$ 686
Mon 17/211:25 p.m.YYZ - LHR
Nonstop7h 25mAir Canada
Mon 24/28:55 a.m.LHR - YYZ
1 stop12h 25mAir Canada
Deal found 20/1C$ 692
Wed 16/44:20 p.m.YTZ - LHR
1 stop11h 15mAir Canada
Mon 21/46:50 a.m.LHR - YTZ
2 stops15h 00mAir Canada
Deal found 20/1C$ 695
Wed 5/26:20 p.m.YHM - LHR
2 stops16h 15mMultiple Airlines
Mon 10/27:50 a.m.LHR - YHM
2 stops14h 20mMultiple Airlines
Deal found 21/1C$ 701
Fri 24/16:05 p.m.YYZ - LHR
1 stop11h 25mVirgin Atlantic
Sun 26/16:30 a.m.LHR - YYZ
1 stop17h 45mVirgin Atlantic
Deal found 20/1C$ 744
Fri 24/11:20 p.m.YYZ - LHR
1 stop12h 30mKLM
Sun 26/16:30 a.m.LHR - YYZ
1 stop14h 10mKLM
Deal found 20/1C$ 750
Fri 14/38:15 p.m.YUL - LHR
1 stop14h 10mMultiple Airlines
Wed 26/33:15 p.m.LHR - YUL
1 stop25h 35mMultiple Airlines
Deal found 20/1C$ 781
Sun 16/212:25 p.m.YTZ - LHR
1 stop13h 45mMultiple Airlines
Mon 24/211:10 a.m.LHR - YTZ
2 stops15h 40mMultiple Airlines
Deal found 20/1C$ 787
Tue 4/26:00 p.m.YYZ - LHR
Nonstop7h 15mBritish Airways
Sun 9/211:45 a.m.LHR - YYZ
Nonstop8h 10mBritish Airways
Deal found 19/1C$ 790
Sun 16/310:45 p.m.YUL - LHR
1 stop14h 45mTAP AIR PORTUGAL
Mon 31/31:45 p.m.LHR - YUL
1 stop12h 25mTAP AIR PORTUGAL
Deal found 21/1C$ 792
Sun 26/16:35 p.m.YYZ - LHR
1 stop21h 50mAir France
Tue 28/17:35 p.m.LHR - YYZ
2 stops52h 40mAir France
Deal found 19/1C$ 793

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 21 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

HamiltonLondon

YHM - LHR

YHMLHR

Hamilton

Fri 31/1

6:20 p.m.-7:50 p.m.

2 stops20h 30m

London Heathrow

Sun 9/2

7:50 a.m.-5:10 p.m.

2 stops14h 20m

C$ 633

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Mon 31/3

8:50 p.m.-11:55 a.m.

1 stop10h 05m

London Heathrow

Wed 30/4

1:05 p.m.-7:10 p.m.

1 stop11h 05m

C$ 681

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Tue 18/3

2:00 p.m.-7:10 a.m.

1 stop13h 10m

London Heathrow

Mon 24/3

1:30 p.m.-8:55 p.m.

1 stop11h 25m

C$ 686

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Mon 17/2

2:00 p.m.-7:10 a.m.

1 stop12h 10m

London Heathrow

Sun 23/2

7:25 p.m.-2:35 p.m.

1 stop24h 10m

C$ 692

TorontoLondon

YTZ - LHR

YTZLHR

Toronto Island

Mon 3/2

8:50 a.m.-7:10 a.m.

2 stops17h 20m

London Heathrow

Tue 22/4

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

2 stops15h 50m

C$ 695

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Fri 14/3

8:15 p.m.-2:25 p.m.

1 stop14h 10m

London Heathrow

Wed 26/3

3:15 p.m.-12:50 p.m.

1 stop25h 35m

C$ 781

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Tue 4/2

6:00 p.m.-6:15 a.m.

Nonstop7h 15m

London Heathrow

Sun 9/2

11:45 a.m.-2:55 p.m.

Nonstop8h 10m

C$ 790

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Sun 16/3

10:45 p.m.-5:30 p.m.

1 stop14h 45m

London Heathrow

Mon 31/3

1:45 p.m.-9:10 p.m.

1 stop12h 25m

C$ 792

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Thu 20/2

8:10 p.m.-8:30 a.m.

Nonstop7h 20m

London Heathrow

Wed 26/2

6:35 a.m.-2:55 p.m.

1 stop13h 20m

C$ 799

TorontoLondon

YTZ - LHR

YTZLHR

Toronto Island

Tue 18/2

12:25 p.m.-7:10 a.m.

1 stop13h 45m

London Heathrow

Tue 25/2

6:50 a.m.-7:50 p.m.

2 stops18h 00m

C$ 800

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/1

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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 21 January 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 21 January 2025.

The most flights from CAON to LHR are scheduled on a Monday (34 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (18 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 21 January 2025.
Get a feel of what it's like to fly with Air Canada, United Airlines and WestJet 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
8,521 reviews
Check prices

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

Reviews

1 / 10

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

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews
Check prices

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

Reviews

1 / 10

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

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very good
8,521 reviews
Check prices

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

Reviews

1 / 10

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

Finnair
7.6
Good
1,286 reviews
Delta
8.0
Very good
8,521 reviews
Check prices

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

Reviews

1 / 10

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

Austrian Airlines
7.6
Good
786 reviews
Delta
8.0
Very good
8,521 reviews
Check prices

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

Reviews

1 / 10

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$ 298. 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 (75%), SriLankan Airlines (62%) or MEA (62%) 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$ 2,095 for a flight from Region of Ontario to London Heathrow Airport. The cheapest flight overall is C$ 595 while the most popular route, (Toronto Pearson Intl - London Heathrow) is currently priced at C$ 636.

  • 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
Bedford
Bromley
Southall

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Alternative routes for Ontario to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Toronto Island to London City flights
Pierre Elliott Trudeau Intl to Southend flights
Vancouver Intl to Luton flights
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Victoria to London City flights
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Québec City to Luton flights
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Regina to Heathrow 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 21 January 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapestC$ 413AverageC$ 679FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
TAP AIR PORTUGALCheapestC$ 549AverageC$ 691FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
IcelandairCheapestC$ 632AverageC$ 931FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapestC$ 632AverageC$ 827FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
FinnairCheapestC$ 642AverageC$ 974FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Air TransatCheapestC$ 679AverageC$ 876FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Scandinavian AirlinesCheapestC$ 682AverageC$ 780FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
DeltaCheapestC$ 698AverageC$ 903FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Porter AirlinesCheapestC$ 737AverageC$ 839FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 737AverageC$ 1,117FlexibilityNo 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.

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