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

KLM, SWISS, and Delta can get you from London to Region of Ontario in just under 7h 50m. Your travel time can differ by up to 7h 51m. There are 3543 mi between London and Region of Ontario. This flight may include one or multiple stops.

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

The cheapet airlines for a one-way flight from London to Region of Ontario are Icelandair (£146), KLM (£180), and Air Transat (£206).

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 to Region of Ontario?

The most popular route from London to Region of Ontario is London Heathrow - Toronto Pearson Intl. You may also consider London Gatwick - Toronto Pearson Intl or London Heathrow - Toronto Island.

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

The cheapest flight price from London to Region of Ontario is £309. On average you can expect to pay £1,464. The most popular route, (London Heathrow - Toronto Pearson Intl), can usually be booked for £318.

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

The top 3 most reliable airlines when flying from London to Region of Ontario are Singapore Airlines (91%), MEA (90%) and SriLankan Airlines (86%).

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

Air Canada, Lufthansa and Air Transat are the most popular airlines when flying from London to Region of Ontario.

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

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

How can I find direct flights from London to Ontario?

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

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

Yes. Cheapflights offers flight deals from London 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.

£218+ Cheap Flights from London to Ontario

Cheap flight deals from London to Ontario

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from London to Ontario
Explore the most affordable flight options available from London to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 September 2026.

Thu 15/1006:00 -

1 stop15h 10m

Mon 19/1020:05 -

1 stop16h 45m

Deal found 12/9£348

Thu 15/1006:00 -

1 stop11h 50m

Mon 19/1021:25 -

Nonstop7h 10m

Deal found 12/9£350

Tue 29/1216:45 -

Nonstop7h 30m

Tue 12/121:15 -

Nonstop6h 50m

Deal found 10/9£367

Sat 26/917:50 -

Nonstop7h 50m

Sat 3/1022:55 -

Nonstop7h 15m

Deal found 12/9£368

Thu 5/1108:30 -

1 stop12h 45m

Wed 11/1120:25 -

1 stop16h 25m

Deal found 13/9£368

Fri 16/1012:40 -

1 stop13h 00m

Sun 1/1121:35 -

1 stop18h 25m

Deal found 9/9£368

Sat 3/1009:30 -

2 stops13h 50m

Sat 10/1012:20 -

2 stops13h 10m

Deal found 13/9£368

Thu 15/1006:00 -

1 stop15h 10m

Mon 26/1010:00 -

2 stops16h 30m

Deal found 11/9£369

Fri 20/1122:25 -

2 stops24h 50m

Sat 28/1119:40 -

2 stops22h 25m

Deal found 10/9£369

Sat 26/909:40 -

Nonstop8h 05m

Mon 5/1023:15 -

1 stop29h 35m

Deal found 11/9£369

Fri 16/1012:40 -

1 stop13h 00m

Sun 25/1020:00 -

1 stop11h 20m

Deal found 10/9£369

Thu 15/1009:30 -

1 stop13h 50m

Mon 26/1015:35 -

1 stop10h 55m

Deal found 13/9£369

Best flights from London to Ontario
Discover carefully curated flight deals from London to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 September 2026.

Fri 2/1017:50 -

Nonstop7h 50m

Thu 28/121:45 -

Nonstop7h 05m

Deal found 12/9£378

Fri 23/1008:40 -

2 stops15h 41m

Tue 27/1017:40 -

2 stops16h 00m

Deal found 10/9£380

Wed 4/1110:00 -

1 stop14h 45m

Mon 7/1222:20 -

1 stop12h 25m

Deal found 13/9£381

Sun 17/111:40 -

Nonstop8h 20m

Thu 4/321:35 -

Nonstop7h 10m

Deal found 10/9£385

Wed 14/1007:30 -

2 stops19h 36m

Sat 24/1006:10 -

1 stop19h 45m

Deal found 12/9£392

Thu 3/1210:00 -

2 stops17h 54m

Wed 9/1222:20 -

1 stop12h 25m

Deal found 9/9£402

Thu 22/1008:50 -

1 stop12h 00m

Tue 3/1118:21 -

1 stop11h 04m

Deal found 10/9£411

Tue 27/1020:45 -

2 stops24h 30m

Tue 10/1116:00 -

2 stops17h 40m

Deal found 8/9£446

Thu 14/110:10 -

2 stops40h 05m

Sun 17/122:45 -

2 stops16h 50m

Deal found 9/9£462

Mon 28/914:05 -

Nonstop7h 35m

Tue 13/1022:10 -

Nonstop6h 50m

Deal found 8/9£476

Tue 10/1117:20 -

1 stop30h 00m

Tue 17/1120:15 -

1 stop32h 40m

Deal found 12/9£673

Wed 25/1110:00 -

1 stop14h 45m

Wed 2/1222:20 -

1 stop12h 25m

Deal found 10/9£381

Wed 21/1007:30 -

2 stops19h 36m

Thu 29/1006:00 -

1 stop19h 55m

Deal found 8/9£392

Sun 4/1009:40 -

1 stop11h 50m

Sun 11/1016:55 -

1 stop10h 00m

Deal found 8/9£393

Sat 16/110:00 -

2 stops18h 00m

Wed 3/317:55 -

1 stop19h 30m

Deal found 10/9£423

Thu 29/1009:10 -

1 stop11h 40m

Wed 4/1117:20 -

1 stop14h 20m

Deal found 13/9£423

Fri 2/1017:50 -

Nonstop7h 50m

Thu 28/121:15 -

1 stop11h 35m

Deal found 12/9£392

Fri 9/1009:40 -

1 stop11h 50m

Sun 11/1016:55 -

1 stop10h 00m

Deal found 8/9£393

Wed 28/1007:30 -

2 stops17h 16m

Wed 4/1114:57 -

1 stop14h 28m

Deal found 9/9£394

Mon 19/1016:00 -

1 stop27h 10m

Tue 27/1016:10 -

1 stop17h 20m

Deal found 11/9£903

Fri 23/1009:15 -

1 stop11h 55m

Thu 12/1120:25 -

1 stop11h 25m

Deal found 9/9£452

Sun 27/906:45 -

1 stop33h 15m

Sun 4/1023:55 -

1 stop17h 25m

Deal found 8/9£452

Thu 14/110:00 -

2 stops17h 51m

Sun 17/106:30 -

2 stops21h 30m

Deal found 8/9£427

Wed 9/1207:30 -

1 stop16h 10m

Wed 30/1211:25 -

1 stop13h 55m

Deal found 9/9£946

Mon 11/119:25 -

1 stop25h 25m

Sun 17/117:20 -

1 stop12h 05m

Deal found 11/9£430

Wed 7/1007:30 -

2 stops15h 37m

Tue 13/1014:30 -

1 stop15h 10m

Deal found 8/9£394

Mon 1/316:10 -

Nonstop7h 55m

Thu 11/321:45 -

Nonstop7h 05m

Deal found 12/9£402

Tue 19/111:40 -

Nonstop8h 20m

Wed 3/321:35 -

Nonstop7h 10m

Deal found 10/9£410

Sun 8/1118:40 -

1 stop24h 25m

Sun 22/1120:15 -

1 stop13h 20m

Deal found 13/9£460

Thu 15/1009:15 -

1 stop12h 05m

Sat 24/1018:20 -

1 stop18h 20m

Deal found 8/9£506

Find flight deals from London to Ontario

Round-trip from	£348
One-way from	£218
Popular in	August
Cheapest in	February
Average price	£427
Good round-trip deal	£395 or less
Good one-way deal	£212 or less

SWISS
15/10-19/10
2 total stops
31h 55m total
London to Ontario

Search Deals

Air Transat
18/9-31/12
Nonstop
7h 40m total
London to Ontario

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (£40 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 September 2026

Search Deals

Price to beat on a round-trip flight from London (LON) to Ontario.

Search Deals

Price to beat on a one-way flight from London (LON) to Ontario.

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonMontreal

LGW London Gatwick - YUL Montreal Pierre Elliott Trudeau Intl

LGWYUL

London Gatwick

Sat 7/11

18:40-12:40

1 stop23h 00m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£241

LondonMontreal

LGW London Gatwick - YUL Montreal Pierre Elliott Trudeau Intl

LGWYUL

London Gatwick

Mon 2/11

16:45-12:40

1 stop24h 55m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£246

LondonMontreal

LGW London Gatwick - YUL Montreal Pierre Elliott Trudeau Intl

LGWYUL

London Gatwick

Mon 9/11

16:45-12:40

1 stop24h 55m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£247

LondonMontreal

LGW London Gatwick - YUL Montreal Pierre Elliott Trudeau Intl

LGWYUL

London Gatwick

Sat 31/10

19:00-13:40

1 stop22h 40m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£250

LondonMontreal

STN London Stansted - YUL Montreal Pierre Elliott Trudeau Intl

STNYUL

London Stansted

Mon 9/11

16:30-12:40

1 stop25h 10m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£254

LondonMontreal

STN London Stansted - YUL Montreal Pierre Elliott Trudeau Intl

STNYUL

London Stansted

Tue 10/11

20:45-19:40

3 stops27h 55m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£265

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Mon 8/3

20:35-18:15

1 stop26h 40m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£276

LondonToronto

LGW London Gatwick - YYZ Toronto Pearson Intl

LGWYYZ

London Gatwick

Sun 6/12

21:25-15:20

2 stops46h 55m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£294

LondonToronto

LCY London City - YYZ Toronto Pearson Intl

LCYYYZ

London City

Wed 14/10

19:15-12:50

1 stop22h 35m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£299

LondonMontreal

LGW London Gatwick - YUL Montreal Pierre Elliott Trudeau Intl

LGWYUL

London Gatwick

Wed 21/10

11:35-14:15

Nonstop7h 40m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£308

Flights are sorted by cheapest return flights first.

Deals found on 9/9

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from London to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from London with our price prediction graph.

LHR-YYZ

LHR-YUL

LGW-YYZ

STN-YYZ

LGW-YTZ

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 to Ontario

LON-CAON

LHR-YYZ

LHR-YUL

LGW-YYZ

STN-YYZ

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

Currently, February is the cheapest month in which you can book a flight from London to Region of Ontario (average of £402). Flying from London to Region of Ontario in August is currently the most expensive (average of £611). 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 LON to ON?

When flying from London 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 to Region of Ontario

The most flights from LON to CAON are scheduled on a Friday (39 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (25 on average).

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

Airfare is below average for this route at the moment.

London to Region of Ontario flights typically cost between £395 and £518 in October.
The cheapest return price found within the last 5 days was £348 on SWISS (15 Oct–19 Oct).

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

Booking 43 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Region of Ontario. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Ontario

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

Air Transat

7.7

Good

579 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.

Air Transat

7.7

Good

579 reviews

Air Transat

7.7

Good

579 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.

Virgin Atlantic

7.4

Good

694 reviews

Air Transat

7.7

Good

579 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.

Air Canada

7.1

Good

11,619 reviews

Air Transat

7.7

Good

579 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.

Icelandair

6.9

Okay

743 reviews

Air Transat

7.7

Good

579 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.

Lufthansa

6.8

Okay

8,220 reviews

Air Transat

7.7

Good

579 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.

Related info for your journey

How long is the flight from London to Region of Ontario?
KLM, SWISS, and Delta can get you from London to Region of Ontario in just under 7h 50m. Your travel time can differ by up to 7h 51m. There are 3543 mi between London and Region of Ontario. This flight may include one or multiple stops.
What are the cheapest airlines to fly from London to Region of Ontario one-way?
The cheapet airlines for a one-way flight from London to Region of Ontario are Icelandair (£146), KLM (£180), and Air Transat (£206).
What are the most popular routes from London to Region of Ontario?
The most popular route from London to Region of Ontario is London Heathrow - Toronto Pearson Intl. You may also consider London Gatwick - Toronto Pearson Intl or London Heathrow - Toronto Island.
What are the most reliable airlines from London to Region of Ontario?
The top 3 most reliable airlines when flying from London to Region of Ontario are Singapore Airlines (91%), MEA (90%) and SriLankan Airlines (86%).
What are the cheapest flights from London to Region of Ontario?
The cheapest flight price from London to Region of Ontario is £309. On average you can expect to pay £1,464. The most popular route, (London Heathrow - Toronto Pearson Intl), can usually be booked for £318.
Can I find deals for flights from London to Ontario that include hotel bookings?
Yes. In addition to deals on London to Ontario flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Ontario.
Can I find deals for business class flights from London to Ontario?
Yes. Cheapflights offers flight deals from London 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 to Region of Ontario?
Currently, February is the cheapest month in which you can book a flight from London to Region of Ontario (average of £402). Flying from London to Region of Ontario in August is currently the most expensive (average of £611). 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

Complete your trip

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Alternative routes for London to Ontario

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Gatwick to Pearson Intl flights

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Stansted to Pearson Intl flights

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Gatwick to Toronto Island flights

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Stansted to Pierre Elliott Trudeau Intl flights

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Stansted to Calgary flights

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Manchester to Abbotsford flights

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Birmingham to Pearson Intl flights

Manchester to Calgary flights

Gatwick to Ottawa flights

Edinburgh to Vancouver Intl flights

Gatwick to Edmonton flights

Birmingham to Toronto Island flights

Birmingham to Vancouver Intl flights

Top 10 airlines flying from London to Ontario

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	Cheapest£174	Average£490	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
ITA Airways	Cheapest£262	Average£668	FlexibilityNo cancel fee	On-time81%	Search ITA Airways flights
Icelandair	Cheapest£270	Average£419	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Air Canada	Cheapest£317	Average£578	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Air Transat	Cheapest£330	Average£504	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
TAP AIR PORTUGAL	Cheapest£332	Average£555	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
American Airlines	Cheapest£346	Average£699	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Air France	Cheapest£353	Average£521	FlexibilityNo cancel fee	On-time77%	Search Air France flights
WestJet	Cheapest£358	Average£550	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
Aer Lingus	Cheapest£359	Average£551	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights

Fly with Cheapflights

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

When you search for this flight from London to Ontario, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

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

Certainly. Search results for flights to Ontario from London shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Of course! You can now track prices for flights from London 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 to Ontario from £218

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Ontario

Cheapest flights from London to OntarioExplore the most affordable flight options available from London to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 September 2026.

Explore the most affordable flight options available from London to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 September 2026.

Best flights from London to OntarioDiscover carefully curated flight deals from London to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 September 2026.

Discover carefully curated flight deals from London to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 September 2026.

Direct flights from London to OntarioExplore direct flight options from London to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated 13 September 2026.

Explore direct flight options from London to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated 13 September 2026.

Last-minute flights from London to OntarioDiscover last-minute flight deals from London to Ontario. Data last updated 13 September 2026 and is based on user searches.

Discover last-minute flight deals from London to Ontario. Data last updated 13 September 2026 and is based on user searches.

One-way flights from London to OntarioSearch for one-way flight options from London to Ontario. Find affordable one-way fares based on user searches. Data last updated 13 September 2026.

Search for one-way flight options from London to Ontario. Find affordable one-way fares based on user searches. Data last updated 13 September 2026.

Find flight deals from London 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 to Ontario that are best for you.

Best time to book a flight from London to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from London with our price prediction graph.

Cheapflights Insights

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

What is the cheapest time of day to fly from LON to ON?

Find hourly flight availability from London 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 13 September 2026.

When flying from London 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 to Region of Ontario

Explore weekly flight availability from London 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 13 September 2026.

The most flights from LON to CAON are scheduled on a Friday (39 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (25 on average).

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

Airfare is below average for this route at the moment.

London to Region of Ontario flights typically cost between £395 and £518 in October.The cheapest return price found within the last 5 days was £348 on SWISS (15 Oct–19 Oct).

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

Booking 43 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Region of Ontario. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown with Air Transat,Virgin Atlantic, andAir Canada from London 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 to Region of Ontario?

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

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

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

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

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

How can I find direct flights from London to Ontario?

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

What is the cheapest month to book a flight from London 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 London 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 London to Ontario by cabin class

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

London and Ontario flights

Browse other London and Ontario flight options. Last updated on 13 September 2026.

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London to Ontario flights

Consider these flights travelling from London to Ontario.

Top 10 airlines flying from London to Ontario

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Cheapest flights from London to Ontario
Explore the most affordable flight options available from London to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 September 2026.

Best flights from London to Ontario
Discover carefully curated flight deals from London to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 September 2026.

Direct flights from London to Ontario
Explore direct flight options from London to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated 13 September 2026.

Last-minute flights from London to Ontario
Discover last-minute flight deals from London to Ontario. Data last updated 13 September 2026 and is based on user searches.

One-way flights from London to Ontario
Search for one-way flight options from London to Ontario. Find affordable one-way fares based on user searches. Data last updated 13 September 2026.

London to Region of Ontario flights typically cost between £395 and £518 in October.
The cheapest return price found within the last 5 days was £348 on SWISS (15 Oct–19 Oct).