How long is the flight from London Heathrow Airport to Region of Ontario?

Airlines like Delta, Lufthansa, and United Airlines fly from London Heathrow Airport to Region of Ontario in about 7h 50m. The time it takes to get you to your destination can typically vary by up to 9h 39m. There are 3543 mi between London Heathrow Airport and Region of Ontario. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

What are the cheapest airlines to fly from London Heathrow Airport to Region of Ontario one-way?

To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at £147. KLM flights start at £182 while deals on British Airways start at £229 one-way.

In terms of precipitation, rainfall in Region of Ontario ranges from 51.0 - 83.0 inches 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.

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).

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

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

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

Looking for the cheapest flight from London Heathrow Airport to Region of Ontario? While on average our users pay £1,472, our data indicates the cheapest price to be £317. The most popular route (London Heathrow - Toronto Pearson Intl), is priced around £316.

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

The top 3 most reliable airlines when flying from London Heathrow Airport to Region of Ontario are MEA (94%), Singapore Airlines (93%) and SriLankan Airlines (88%).

What are the most popular airlines that fly from London Heathrow Airport to Region of Ontario?

Air Canada, Lufthansa and Virgin Atlantic are the most popular airlines when flying from London Heathrow Airport to Region of Ontario.

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 holiday 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.

£244+ Cheap Flights from London Heathrow Airport to Ontario

Cheap flight deals from Heathrow to Ontario

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

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 21 September 2026.

Fri 16/1009:30 -

1 stop11h 23m

Fri 23/1023:50 -

Nonstop7h 00m

Deal found 20/9£362

Mon 5/1011:05 -

1 stop29h 45m

Mon 12/1006:40 -

1 stop9h 20m

Deal found 18/9£363

Thu 12/1106:00 -

2 stops16h 51m

Mon 23/1112:30 -

2 stops13h 00m

Deal found 19/9£363

Thu 24/908:30 -

Nonstop7h 45m

Wed 30/915:00 -

1 stop10h 30m

Deal found 16/9£364

Tue 20/1017:15 -

2 stops33h 15m

Thu 5/1110:20 -

2 stops29h 40m

Deal found 16/9£364

Thu 15/1006:00 -

1 stop11h 50m

Mon 26/1021:25 -

1 stop16h 25m

Deal found 16/9£364

Wed 14/1008:40 -

2 stops17h 50m

Mon 19/1012:20 -

1 stop13h 10m

Deal found 17/9£364

Thu 15/1006:00 -

1 stop11h 50m

Mon 26/1017:35 -

2 stops47h 25m

Deal found 18/9£365

Thu 22/1012:40 -

2 stops34h 40m

Sat 31/1018:55 -

2 stops46h 05m

Deal found 20/9£365

Thu 15/1008:30 -

Nonstop7h 45m

Thu 22/1018:35 -

Nonstop7h 00m

Deal found 17/9£366

Mon 23/1106:00 -

2 stops16h 51m

Tue 1/1212:30 -

1 stop13h 40m

Deal found 16/9£366

Mon 5/1017:55 -

1 stop22h 55m

Thu 15/1023:50 -

Nonstop7h 00m

Deal found 18/9£367

Best flights from Heathrow to Ontario
Discover carefully curated flight deals from Heathrow to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 September 2026.

Mon 19/1017:50 -

Nonstop7h 50m

Mon 9/1121:45 -

Nonstop7h 05m

Deal found 20/9£378

Wed 4/1111:10 -

Nonstop8h 15m

Wed 11/1118:05 -

Nonstop7h 25m

Deal found 20/9£378

Mon 23/1107:30 -

2 stops17h 29m

Mon 30/1117:55 -

1 stop13h 05m

Deal found 19/9£393

Thu 5/1118:45 -

1 stop26h 05m

Wed 11/1118:21 -

1 stop11h 04m

Deal found 20/9£400

Mon 12/1017:50 -

1 stop11h 30m

Fri 30/1018:25 -

2 stops13h 40m

Deal found 19/9£409

Sat 24/1017:50 -

1 stop11h 30m

Sun 1/1117:25 -

1 stop15h 20m

Deal found 19/9£411

Thu 15/1006:00 -

2 stops16h 08m

Mon 19/1005:15 -

2 stops30h 10m

Deal found 17/9£434

Sun 4/1017:45 -

Nonstop7h 50m

Mon 12/1021:55 -

1 stop10h 55m

Deal found 19/9£392

Tue 3/1107:30 -

2 stops15h 46m

Tue 10/1114:35 -

2 stops13h 35m

Deal found 17/9£393

Fri 9/1017:50 -

1 stop11h 30m

Mon 12/1017:10 -

1 stop15h 35m

Deal found 20/9£414

Fri 6/1107:30 -

2 stops17h 29m

Sun 8/1112:55 -

1 stop12h 25m

Deal found 20/9£394

Sun 1/1120:15 -

2 stops28h 37m

Sun 8/1109:15 -

1 stop18h 15m

Deal found 17/9£434

Thu 12/1111:45 -

1 stop12h 30m

Wed 18/1122:20 -

1 stop10h 25m

Deal found 17/9£395

Fri 13/1106:00 -

2 stops21h 36m

Mon 23/1111:20 -

2 stops20h 40m

Deal found 18/9£436

Fri 23/1017:50 -

1 stop11h 30m

Wed 28/1018:25 -

2 stops15h 25m

Deal found 16/9£436

Sat 5/1214:50 -

1 stop28h 35m

Thu 10/1215:25 -

1 stop16h 25m

Deal found 20/9£873

Mon 26/1007:30 -

2 stops16h 29m

Mon 2/1120:40 -

1 stop18h 55m

Deal found 20/9£394

Tue 3/1109:30 -

2 stops15h 22m

Tue 10/1115:25 -

2 stops16h 35m

Deal found 19/9£442

Fri 6/1106:00 -

2 stops32h 44m

Tue 10/1116:10 -

2 stops15h 50m

Deal found 18/9£446

Sat 26/917:50 -

Nonstop7h 50m

Sat 30/122:20 -

1 stop10h 25m

Deal found 17/9£406

Mon 2/1106:35 -

2 stops17h 10m

Mon 9/1110:35 -

2 stops24h 15m

Deal found 20/9£457

Wed 21/1007:30 -

2 stops16h 30m

Wed 28/1016:20 -

2 stops14h 30m

Deal found 19/9£394

Thu 5/1109:00 -

2 stops14h 45m

Thu 12/1119:20 -

1 stop11h 00m

Deal found 21/9£442

Tue 3/1109:00 -

2 stops29h 55m

Tue 10/1110:35 -

2 stops21h 25m

Deal found 19/9£446

Fri 9/1017:50 -

1 stop11h 30m

Tue 20/1017:10 -

2 stops12h 35m

Deal found 16/9£505

Tue 29/909:30 -

Nonstop7h 30m

Sat 17/1022:10 -

Nonstop6h 50m

Deal found 19/9£475

Sat 7/1106:50 -

2 stops18h 25m

Sat 14/1115:20 -

1 stop14h 30m

Deal found 18/9£401

Thu 26/1106:00 -

2 stops32h 55m

Sun 29/1110:35 -

2 stops24h 45m

Deal found 20/9£446

Sat 31/1020:15 -

2 stops28h 37m

Sat 7/1105:30 -

1 stop22h 00m

Deal found 16/9£464

Tue 3/1106:50 -

2 stops14h 52m

Tue 10/1115:20 -

1 stop14h 30m

Deal found 19/9£402

Find flight deals from Heathrow to Ontario

Round-trip from	£362
One-way from	£244
Popular in	August
Cheapest in	February
Average price	£436
Good round-trip deal	£413 or less
Good one-way deal	£334 or less

Air Canada
16/10-23/10
1 total stop
18h 23m total
London to Ontario

Search Deals

30/10-31/12
1 total stop
33h 25m total
London to Ontario

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (£42 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£8 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

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

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Sun 15/11

20:35-18:15

1 stop26h 40m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£275

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Mon 19/10

18:40-12:50

1 stop23h 10m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£302

LondonToronto

LHR London Heathrow - YTZ Toronto Island

LHRYTZ

London Heathrow

Fri 9/10

09:30-15:00

2 stops34h 30m

Toronto Island

Wed 31/12

00:00-06:00

Nonstop0h 00m

£323

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Mon 23/11

06:35-23:26

2 stops21h 51m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£329

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Mon 28/9

07:30-22:23

2 stops19h 53m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£329

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Tue 29/9

07:30-19:00

2 stops16h 30m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£330

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Sat 26/9

07:30-21:35

2 stops19h 05m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£330

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Wed 30/9

07:30-22:23

2 stops19h 53m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£330

LondonToronto

LHR London Heathrow - YTZ Toronto Island

LHRYTZ

London Heathrow

Sun 27/9

09:30-19:50

1 stop15h 20m

Toronto Island

Wed 31/12

00:00-06:00

Nonstop0h 00m

£336

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Wed 25/11

06:20-15:00

1 stop13h 40m

Ottawa

Wed 31/12

00:00-06:00

Nonstop0h 00m

£364

Flights are sorted by cheapest return flights first.

Deals found on 18/9

Showing 1-10 of 60 resultsSorted by cheapest first

...

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.

LHR-YYZ

LHR-YUL

LHR-YTZ

LHR-YOW

LHR-YQT

Estimated return 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

LHR-CAON

LHR-YYZ

LHR-YUL

LHR-YTZ

LHR-YOW

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

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Region of Ontario (average of £422). Flying from London Heathrow Airport to Region of Ontario in August is currently the most expensive (average of £654). 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?

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

The most flights from LHR to CAON are scheduled on a Sunday (40 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (25 on average).

How much does it cost for a return flight from London Heathrow Airport to Region of Ontario?

Airfare is below average for this route at the moment.

London Heathrow Airport to Region of Ontario flights typically cost between £403 and £567 in October.
The cheapest return price found within the last 5 days was £362 on Air Canada (16 Oct–23 Oct).

How far ahead should I book a flight from London Heathrow Airport to Region of Ontario?

The best time to book flights from London Heathrow Airport to Region of Ontario is 84 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown with Virgin Atlantic,Aer Lingus, andAir Canada from London Heathrow Airport to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Virgin Atlantic

7.4

Good

694 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Virgin Atlantic

7.4

Good

694 reviews

Virgin Atlantic

7.4

Good

694 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Aer Lingus

7.3

Good

1,780 reviews

Virgin Atlantic

7.4

Good

694 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Air Canada

7.1

Good

11,662 reviews

Virgin Atlantic

7.4

Good

694 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Lufthansa

6.8

Okay

8,238 reviews

Virgin Atlantic

7.4

Good

694 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

British Airways

6.7

Okay

8,226 reviews

Virgin Atlantic

7.4

Good

694 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Related info for your journey

How long is the flight from London Heathrow Airport to Region of Ontario?
Airlines like Delta, Lufthansa, and United Airlines fly from London Heathrow Airport to Region of Ontario in about 7h 50m. The time it takes to get you to your destination can typically vary by up to 9h 39m. There are 3543 mi between London Heathrow Airport and Region of Ontario. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines to fly from London Heathrow Airport to Region of Ontario one-way?
To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at £147. KLM flights start at £182 while deals on British Airways start at £229 one-way.
What are the most popular routes from London Heathrow Airport to Region of Ontario?
The most popular flight routes from London Heathrow Airport to Region of Ontario are London Heathrow - Toronto Pearson Intl, London Heathrow - Toronto Island and London Heathrow - Montreal Pierre Elliott Trudeau Intl.
What are the most reliable airlines from London Heathrow Airport to Region of Ontario?
The top 3 most reliable airlines when flying from London Heathrow Airport to Region of Ontario are MEA (94%), Singapore Airlines (93%) and SriLankan Airlines (88%).
What are the cheapest flights from London Heathrow Airport to Region of Ontario?
Looking for the cheapest flight from London Heathrow Airport to Region of Ontario? While on average our users pay £1,472, our data indicates the cheapest price to be £317. The most popular route (London Heathrow - Toronto Pearson Intl), is priced around £316.
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 holiday 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Region of Ontario (average of £422). Flying from London Heathrow Airport to Region of Ontario in August is currently the most expensive (average of £654). 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

Heathrow to Pearson Intl flights

Heathrow to Vancouver Intl flights

Gatwick to Pearson Intl flights

Heathrow to Toronto Island flights

London City to Pearson Intl flights

Stansted to Pearson Intl flights

Heathrow to Calgary flights

Heathrow to Pierre Elliott Trudeau Intl flights

Gatwick to Vancouver Intl flights

Luton to Pearson Intl flights

London City to Vancouver Intl flights

Stansted to Vancouver Intl flights

Gatwick to Toronto Island flights

Heathrow to Abbotsford flights

Gatwick to Calgary flights

London City to Calgary flights

London City to Pierre Elliott Trudeau Intl flights

Gatwick to Pierre Elliott Trudeau Intl flights

Luton to Pierre Elliott Trudeau Intl flights

Stansted to Pierre Elliott Trudeau Intl flights

Heathrow to Halifax flights

Luton to Vancouver Intl flights

Heathrow to Ottawa flights

Luton to Calgary flights

Gatwick to Abbotsford flights

Stansted to Calgary flights

Southend to Pearson Intl flights

London City to Ottawa flights

Heathrow to Edmonton flights

Gatwick to Halifax flights

Heathrow to Winnipeg flights

Gatwick to Ottawa flights

Heathrow to St. John's flights

London City to Halifax flights

Gatwick to St. John's flights

Gatwick to Winnipeg flights

Gatwick to Edmonton flights

Heathrow to Québec City flights

London City to Edmonton flights

Gatwick to Québec City flights

Heathrow to Victoria flights

Stansted to Halifax flights

London City to Winnipeg flights

Heathrow to Comox flights

Stansted to Edmonton flights

Stansted to Ottawa flights

Stansted to St. John's flights

London City to St. John's flights

Top 10 airlines flying from Heathrow to Ontario

Airline	Cheapest	Average	Flexibility	On-time
ITA Airways	Cheapest£265	Average£674	FlexibilityNo cancel fee	On-time81%	Search ITA Airways flights
Icelandair	Cheapest£314	Average£421	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Air Canada	Cheapest£320	Average£588	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Air Transat	Cheapest£334	Average£516	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
TAP AIR PORTUGAL	Cheapest£335	Average£560	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Virgin Atlantic	Cheapest£339	Average£554	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
American Airlines	Cheapest£349	Average£706	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Finnair	Cheapest£359	Average£563	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Aer Lingus	Cheapest£363	Average£553	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Lufthansa	Cheapest£364	Average£549	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights

Fly with Cheapflights

How does Cheapflights help users find flights from Heathrow to Ontario?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Ontario from Heathrow today with Cheapflights!

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

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

Need flexible booking options for your flight to Ontario from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Of course! You can now track prices for flights from Heathrow to Ontario and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from London Heathrow Airport to Ontario from £244

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Ontario

Cheapest flights from Heathrow to OntarioExplore 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 21 September 2026.

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 21 September 2026.

Best flights from Heathrow to OntarioDiscover carefully curated flight deals from Heathrow to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 September 2026.

Discover carefully curated flight deals from Heathrow to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 September 2026.

Direct flights from Heathrow to OntarioExplore direct flight options from Heathrow to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated 21 September 2026.

Explore direct flight options from Heathrow to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated 21 September 2026.

Last-minute flights from Heathrow to OntarioDiscover last-minute flight deals from Heathrow to Ontario. Data last updated 21 September 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Ontario. Data last updated 21 September 2026 and is based on user searches.

One-way flights from Heathrow to OntarioSearch for one-way flight options from Heathrow to Ontario. Find affordable one-way fares based on user searches. Data last updated 21 September 2026.

Search for one-way flight options from Heathrow to Ontario. Find affordable one-way fares based on user searches. Data last updated 21 September 2026.

Find flight deals from Heathrow to Ontario

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Ontario that are best for you.

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.

Cheapflights Insights

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

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 21 September 2026.

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 21 September 2026.

The most flights from LHR to CAON are scheduled on a Sunday (40 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (25 on average).

How much does it cost for a return flight from London Heathrow Airport to Region of Ontario?

Airfare is below average for this route at the moment.

London Heathrow Airport to Region of Ontario flights typically cost between £403 and £567 in October.The cheapest return price found within the last 5 days was £362 on Air Canada (16 Oct–23 Oct).

How far ahead should I book a flight from London Heathrow Airport to Region of Ontario?

The best time to book flights from London Heathrow Airport to Region of Ontario is 84 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown with Virgin Atlantic,Aer Lingus, andAir Canada from London Heathrow Airport to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from London Heathrow Airport to Region of Ontario?

What are the cheapest airlines to fly from London Heathrow Airport to Region of Ontario one-way?

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

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

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

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

How can I find direct flights from Heathrow to Ontario?

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

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

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Alternative routes for Heathrow to Ontario

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Heathrow and Ontario flights

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Heathrow to Ontario flights

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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 21 September 2026.

Best flights from Heathrow to Ontario
Discover carefully curated flight deals from Heathrow to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 September 2026.

Direct flights from Heathrow to Ontario
Explore direct flight options from Heathrow to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated 21 September 2026.

Last-minute flights from Heathrow to Ontario
Discover last-minute flight deals from Heathrow to Ontario. Data last updated 21 September 2026 and is based on user searches.

One-way flights from Heathrow to Ontario
Search for one-way flight options from Heathrow to Ontario. Find affordable one-way fares based on user searches. Data last updated 21 September 2026.

London Heathrow Airport to Region of Ontario flights typically cost between £403 and £567 in October.
The cheapest return price found within the last 5 days was £362 on Air Canada (16 Oct–23 Oct).