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

Airlines like British Airways, United Airlines, and Air Canada fly from London Heathrow Airport to Region of Ontario in about 13h. The time it takes to get you to your destination can typically vary by up to 8h 36m. 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 £148. KLM flights start at £182 while deals on TAP AIR PORTUGAL start at £240 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 £1,054, our data indicates the cheapest price to be £310. The most popular route (London Heathrow - Toronto Pearson Intl), is priced around £374.

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.

£280+ 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 30 October 2026.

Thu 10/1212:15 -

1 stop11h 00m

Sun 13/1219:40 -

1 stop10h 10m

Deal found 25/10£368

Thu 10/1212:15 -

1 stop11h 00m

Mon 28/1219:15 -

1 stop10h 35m

Deal found 27/10£371

Fri 6/1120:35 -

1 stop26h 40m

Mon 9/1119:40 -

1 stop18h 50m

Deal found 25/10£375

Wed 11/1112:15 -

1 stop11h 00m

Wed 2/1219:40 -

1 stop18h 50m

Deal found 29/10£376

Wed 25/1112:15 -

1 stop11h 00m

Sun 31/119:40 -

1 stop18h 50m

Deal found 26/10£378

Wed 25/1112:15 -

1 stop11h 00m

Fri 15/119:40 -

1 stop10h 10m

Deal found 26/10£379

Mon 23/1112:15 -

1 stop11h 00m

Sun 29/1119:40 -

1 stop10h 10m

Deal found 26/10£379

Thu 26/1120:35 -

1 stop26h 40m

Wed 2/1219:40 -

1 stop18h 50m

Deal found 26/10£380

Fri 27/1112:15 -

1 stop11h 00m

Wed 2/1219:40 -

1 stop10h 10m

Deal found 28/10£381

Wed 11/1112:15 -

1 stop11h 00m

Sun 15/1119:40 -

1 stop10h 10m

Deal found 28/10£382

Wed 11/1112:15 -

1 stop11h 00m

Tue 17/1119:40 -

1 stop10h 10m

Deal found 25/10£382

Tue 17/1113:00 -

1 stop11h 56m

Thu 26/1115:35 -

1 stop12h 45m

Deal found 26/10£394

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 30 October 2026.

Sun 17/107:50 -

1 stop13h 00m

Sun 31/117:20 -

1 stop13h 05m

Deal found 29/10£433

Mon 8/307:30 -

2 stops15h 29m

Mon 15/314:50 -

2 stops14h 20m

Deal found 26/10£488

Fri 27/1108:40 -

1 stop12h 00m

Fri 11/1214:35 -

2 stops14h 20m

Deal found 29/10£511

Thu 26/1106:00 -

2 stops21h 36m

Thu 3/1211:15 -

2 stops17h 05m

Deal found 29/10£518

Thu 12/1119:55 -

2 stops54h 46m

Sun 15/1122:45 -

1 stop18h 55m

Deal found 26/10£549

Wed 28/407:05 -

2 stops13h 35m

Wed 19/512:10 -

2 stops16h 25m

Deal found 28/10£561

Sat 28/1108:30 -

2 stops40h 57m

Sat 5/1215:20 -

2 stops14h 30m

Deal found 28/10£581

Sat 30/114:50 -

1 stop28h 35m

Thu 4/215:25 -

1 stop16h 25m

Deal found 25/10£774

Thu 14/108:50 -

1 stop12h 00m

Fri 29/117:20 -

1 stop16h 15m

Deal found 29/10£433

Tue 27/419:35 -

1 stop25h 15m

Tue 11/518:05 -

Nonstop7h 10m

Deal found 29/10£435

Fri 11/1216:20 -

1 stop31h 37m

Sat 9/115:20 -

1 stop10h 20m

Deal found 27/10£510

Thu 3/1209:00 -

2 stops16h 27m

Sun 6/1205:30 -

1 stop20h 00m

Deal found 25/10£529

Wed 27/109:50 -

1 stop11h 00m

Sun 31/118:05 -

Nonstop7h 10m

Deal found 29/10£438

Sat 26/1206:30 -

2 stops21h 29m

Wed 6/106:10 -

1 stop19h 40m

Deal found 25/10£552

Thu 26/1106:00 -

2 stops20h 41m

Wed 2/1222:45 -

1 stop13h 45m

Deal found 25/10£560

Mon 8/308:00 -

2 stops15h 45m

Sun 14/315:15 -

1 stop11h 25m

Deal found 26/10£520

Fri 4/1213:45 -

2 stops37h 14m

Tue 8/1210:20 -

2 stops25h 00m

Deal found 28/10£529

Sun 22/1114:50 -

1 stop14h 26m

Thu 26/1109:00 -

2 stops22h 50m

Deal found 25/10£627

Mon 23/1106:30 -

1 stop14h 10m

Mon 30/1112:15 -

1 stop14h 30m

Deal found 25/10£574

Thu 26/1106:00 -

2 stops32h 55m

Sun 29/1119:20 -

1 stop11h 00m

Deal found 28/10£531

Fri 13/1107:30 -

2 stops19h 07m

Mon 14/1219:44 -

1 stop10h 06m

Deal found 27/10£546

Wed 25/1106:00 -

2 stops38h 58m

Sun 29/1116:35 -

2 stops34h 30m

Deal found 27/10£536

Thu 26/1107:30 -

2 stops19h 26m

Thu 3/1206:00 -

2 stops19h 40m

Deal found 29/10£546

Wed 18/1114:50 -

1 stop28h 35m

Sun 22/1115:25 -

1 stop16h 25m

Deal found 29/10£780

Thu 25/209:00 -

2 stops17h 52m

Mon 1/305:30 -

2 stops26h 30m

Deal found 28/10£542

Mon 14/1210:25 -

2 stops33h 40m

Mon 21/1220:10 -

1 stop29h 20m

Deal found 30/10£748

Wed 25/1116:20 -

2 stops25h 51m

Wed 2/1215:10 -

1 stop10h 10m

Deal found 28/10£571

Wed 27/114:50 -

1 stop28h 35m

Sun 7/215:25 -

1 stop16h 25m

Deal found 30/10£787

Sun 6/1215:00 -

1 stop11h 52m

Sat 12/1209:15 -

1 stop21h 05m

Deal found 29/10£547

Tue 15/1216:20 -

2 stops25h 51m

Tue 5/115:10 -

1 stop25h 10m

Deal found 28/10£571

Find flight deals from Heathrow to Ontario

Round-trip from	£371
One-way from	£280
Popular in	August
Cheapest in	February
Average price	£445
Good round-trip deal	£423 or less
Good one-way deal	£354 or less

Icelandair
10/12-28/12
2 total stops
21h 35m total
London to Ontario

Search Deals

16/12-31/12
3 total stops
49h 40m 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 (£9 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 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

Mon 15/2

20:05-15:55

1 stop24h 50m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£312

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Mon 7/12

06:35-23:26

2 stops21h 51m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£332

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Thu 10/12

09:30-23:26

2 stops18h 56m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£332

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Sat 7/11

20:05-16:15

1 stop25h 10m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£336

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Tue 17/11

20:05-16:15

1 stop25h 10m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£336

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Fri 20/11

20:05-16:15

1 stop25h 10m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£336

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Tue 10/11

09:00-15:55

1 stop11h 55m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£337

LondonToronto

LHR London Heathrow - YTZ Toronto Island

LHRYTZ

London Heathrow

Sat 6/3

06:50-16:41

2 stops14h 51m

Toronto Island

Wed 31/12

00:00-06:00

Nonstop0h 00m

£338

Fastest return journey

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Sun 31/1

18:00-21:15

Nonstop8h 15m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£340

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Sun 17/1

07:30-17:49

2 stops15h 19m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£340

Flights are sorted by cheapest return flights first.

Deals found on 29/10

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-YTZ

LHR-YXU

LHR-YOW

LHR-YHM

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-YTZ

LHR-YXU

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 £425). 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.

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 £393 and £518 in December.
The cheapest return price found within the last 5 days was £371 on Icelandair (10 Dec–28 Dec).

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

7.5

Good

699 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

7.5

Good

699 reviews

Virgin Atlantic

7.5

Good

699 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

1,869 reviews

Virgin Atlantic

7.5

Good

699 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

11,833 reviews

Virgin Atlantic

7.5

Good

699 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

8,300 reviews

Virgin Atlantic

7.5

Good

699 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

8,277 reviews

Virgin Atlantic

7.5

Good

699 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 British Airways, United Airlines, and Air Canada fly from London Heathrow Airport to Region of Ontario in about 13h. The time it takes to get you to your destination can typically vary by up to 8h 36m. 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 £148. KLM flights start at £182 while deals on TAP AIR PORTUGAL start at £240 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 (88%), Singapore Airlines (86%) and Egyptair (85%).
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 £1,054, our data indicates the cheapest price to be £310. The most popular route (London Heathrow - Toronto Pearson Intl), is priced around £374.
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 £425). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

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Alternative routes for Heathrow to Ontario

Heathrow to Vancouver Intl flights

Heathrow to Pearson Intl flights

Heathrow to Toronto Island flights

Gatwick to Vancouver Intl flights

Gatwick to Pearson Intl flights

London City to Vancouver Intl flights

Stansted to Pearson Intl flights

London City to Pearson Intl flights

Heathrow to Calgary flights

Luton to Pearson Intl flights

Stansted to Vancouver Intl flights

Heathrow to Abbotsford flights

Heathrow to Pierre Elliott Trudeau Intl flights

Luton to Vancouver Intl flights

Gatwick to Toronto Island flights

London City to Calgary flights

Gatwick to Calgary flights

Heathrow to Halifax flights

Stansted to Pierre Elliott Trudeau Intl flights

Luton to Calgary flights

Gatwick to Pierre Elliott Trudeau Intl flights

London City to Pierre Elliott Trudeau Intl flights

Stansted to Calgary flights

Gatwick to Abbotsford flights

Luton to Pierre Elliott Trudeau Intl flights

Heathrow to Ottawa flights

Gatwick to Halifax flights

Southend to Pearson Intl flights

Gatwick to Ottawa flights

London City to Halifax flights

Heathrow to Edmonton flights

Heathrow to Winnipeg flights

Stansted to Halifax flights

Heathrow to Victoria flights

Gatwick to Edmonton flights

London City to Edmonton flights

Southend to Vancouver Intl flights

London City to Ottawa flights

Gatwick to Winnipeg flights

Heathrow to Kelowna flights

Gatwick to Victoria flights

Heathrow to Saskatoon flights

Luton to Halifax flights

London City to Abbotsford flights

Stansted to Ottawa flights

London City to Winnipeg flights

Heathrow to Comox flights

Heathrow to St. John's flights

Top 10 airlines flying from Heathrow to Ontario

Airline	Cheapest	Average	Flexibility	On-time
ITA Airways	Cheapest£266	Average£677	FlexibilityNo cancel fee	On-time81%	Search ITA Airways flights
Finnair	Cheapest£285	Average£565	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Icelandair	Cheapest£315	Average£429	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Air Canada	Cheapest£321	Average£599	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Virgin Atlantic	Cheapest£338	Average£552	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Air Transat	Cheapest£346	Average£518	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
Lufthansa	Cheapest£359	Average£552	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
British Airways	Cheapest£362	Average£538	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
TAP AIR PORTUGAL	Cheapest£363	Average£568	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Aer Lingus	Cheapest£364	Average£562	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus 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 £280

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/12. 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 30 October 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 30 October 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 30 October 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 30 October 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 30 October 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 30 October 2026.

Last-minute flights from Heathrow to OntarioDiscover last-minute flight deals from Heathrow to Ontario. Data last updated 30 October 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Ontario. Data last updated 30 October 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 30 October 2026.

Search for one-way flight options from Heathrow to Ontario. Find affordable one-way fares based on user searches. Data last updated 30 October 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 30 October 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.

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 £393 and £518 in December.The cheapest return price found within the last 5 days was £371 on Icelandair (10 Dec–28 Dec).

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?

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.

Complete your trip

Complete your trip to Ontario by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Canada

Book a non-stop flight to one of these other cities located in Canada.

Search flights from Heathrow to Ontario by cabin class

Find flights from Heathrow to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Heathrow and Ontario flights

Browse other Heathrow and Ontario flight options. Last updated on 30 October 2026.

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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 30 October 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 30 October 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 30 October 2026.

Last-minute flights from Heathrow to Ontario
Discover last-minute flight deals from Heathrow to Ontario. Data last updated 30 October 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 30 October 2026.

London Heathrow Airport to Region of Ontario flights typically cost between £393 and £518 in December.
The cheapest return price found within the last 5 days was £371 on Icelandair (10 Dec–28 Dec).