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

Air Transat, KLM, and United Airlines can get you from London to Region of Ontario in just under 7h 50m. Your travel time can differ by up to 10h 05m. 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 (£181), and Air Transat (£207).

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 £311. On average you can expect to pay £1,473. The most popular route, (London Heathrow - Toronto Pearson Intl), can usually be booked for £92.

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.

£231+ 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 16 September 2026.

Thu 15/1006:00 -

1 stop15h 10m

Mon 19/1020:05 -

1 stop16h 45m

Deal found 12/9£350

Thu 15/1006:00 -

1 stop11h 50m

Mon 19/1021:25 -

Nonstop7h 10m

Deal found 12/9£352

Thu 24/914:05 -

1 stop14h 13m

Wed 7/1006:40 -

1 stop9h 20m

Deal found 16/9£362

Mon 28/912:40 -

Nonstop8h 00m

Sat 3/1019:50 -

Nonstop7h 05m

Deal found 16/9£362

Tue 20/1017:15 -

2 stops33h 15m

Thu 5/1110:20 -

2 stops29h 40m

Deal found 16/9£362

Thu 15/1006:00 -

1 stop11h 50m

Mon 26/1021:25 -

1 stop16h 25m

Deal found 16/9£363

Wed 14/1008:40 -

2 stops17h 50m

Mon 19/1015:35 -

1 stop9h 55m

Deal found 16/9£363

Tue 15/1206:35 -

1 stop13h 20m

Sun 10/100:30 -

1 stop25h 40m

Deal found 15/9£364

Tue 3/1111:40 -

Nonstop8h 20m

Mon 16/1121:35 -

Nonstop7h 10m

Deal found 16/9£364

Mon 9/1106:00 -

2 stops16h 51m

Sun 15/1110:45 -

2 stops16h 20m

Deal found 15/9£364

Thu 24/915:00 -

1 stop11h 00m

Sun 27/922:55 -

Nonstop7h 15m

Deal found 15/9£364

Wed 14/1019:15 -

1 stop22h 35m

Wed 4/1112:00 -

2 stops15h 40m

Deal found 16/9£364

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 16 September 2026.

Mon 2/1111:40 -

Nonstop8h 20m

Sun 8/1121:35 -

Nonstop7h 10m

Deal found 13/9£377

Fri 2/1017:50 -

Nonstop7h 50m

Thu 28/121:45 -

Nonstop7h 05m

Deal found 12/9£381

Tue 1/1207:30 -

2 stops15h 19m

Tue 8/1214:45 -

2 stops13h 25m

Deal found 15/9£395

Sat 6/316:10 -

Nonstop7h 55m

Sat 13/321:45 -

Nonstop7h 05m

Deal found 12/9£405

Sat 31/1010:00 -

2 stops16h 56m

Sat 7/1118:10 -

2 stops16h 35m

Deal found 14/9£421

Thu 15/1006:45 -

1 stop14h 05m

Thu 5/1117:20 -

1 stop10h 15m

Deal found 15/9£425

Mon 1/316:30 -

1 stop25h 10m

Sun 14/321:10 -

1 stop14h 45m

Deal found 15/9£445

Thu 15/1008:45 -

1 stop11h 15m

Mon 19/1016:40 -

2 stops15h 20m

Deal found 14/9£460

Thu 15/1014:05 -

Nonstop7h 35m

Mon 19/1022:10 -

Nonstop6h 50m

Deal found 14/9£462

Fri 11/1219:55 -

2 stops30h 46m

Tue 29/1217:30 -

1 stop24h 10m

Deal found 16/9£514

Tue 13/1010:20 -

1 stop12h 35m

Tue 20/1019:55 -

1 stop17h 55m

Deal found 15/9£528

Thu 8/1014:05 -

Nonstop7h 35m

Thu 15/1016:40 -

1 stop10h 15m

Deal found 16/9£540

Tue 10/1117:20 -

1 stop30h 00m

Tue 17/1120:15 -

1 stop32h 40m

Deal found 12/9£677

Sun 20/909:40 -

1 stop15h 35m

Sun 27/911:55 -

1 stop15h 00m

Deal found 14/9£394

Tue 27/1006:50 -

2 stops16h 07m

Tue 3/1112:05 -

1 stop12h 50m

Deal found 12/9£404

Sun 4/1007:25 -

1 stop17h 25m

Sat 10/1012:15 -

1 stop13h 05m

Deal found 16/9£843

Thu 15/1006:45 -

1 stop14h 05m

Mon 19/1017:10 -

1 stop11h 00m

Deal found 14/9£425

Wed 14/1010:00 -

2 stops18h 29m

Wed 21/1012:49 -

2 stops14h 06m

Deal found 16/9£434

Sun 15/1108:40 -

1 stop12h 00m

Mon 16/1122:20 -

1 stop10h 25m

Deal found 15/9£439

Mon 26/1011:40 -

Nonstop8h 20m

Wed 11/1121:35 -

Nonstop7h 10m

Deal found 14/9£409

Wed 14/1012:55 -

1 stop33h 15m

Wed 21/1023:45 -

1 stop17h 05m

Deal found 14/9£451

Tue 13/1016:00 -

1 stop27h 10m

Tue 20/1016:10 -

1 stop17h 20m

Deal found 15/9£906

Sun 25/1012:05 -

1 stop15h 47m

Sat 7/1116:20 -

2 stops13h 30m

Deal found 15/9£419

Wed 14/1008:40 -

2 stops15h 41m

Wed 4/1117:10 -

2 stops18h 10m

Deal found 15/9£466

Sun 25/1016:20 -

2 stops21h 27m

Wed 11/1112:55 -

1 stop15h 15m

Deal found 14/9£419

Wed 16/1208:15 -

1 stop35h 30m

Sun 3/117:25 -

1 stop23h 10m

Deal found 12/9£515

Mon 12/1018:40 -

2 stops26h 40m

Mon 19/1020:50 -

1 stop10h 55m

Deal found 11/9£474

Sun 22/1110:00 -

2 stops17h 57m

Thu 26/1106:00 -

2 stops22h 00m

Deal found 12/9£484

Sun 4/1008:30 -

1 stop11h 51m

Sun 18/1022:10 -

Nonstop6h 50m

Deal found 14/9£552

Fri 9/1016:40 -

1 stop12h 14m

Mon 12/1009:44 -

2 stops15h 11m

Deal found 12/9£419

Find flight deals from London to Ontario

Round-trip from	£350
One-way from	£231
Popular in	August
Cheapest in	February
Average price	£429
Good round-trip deal	£374 or less
Good one-way deal	£213 or less

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

Search Deals

4/11-31/12
2 total stops
51h 55m total
London to Ontario

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (£41 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

STN London Stansted - YUL Montreal Pierre Elliott Trudeau Intl

STNYUL

London Stansted

Tue 3/11

12:05-19:40

2 stops36h 35m

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

Fri 6/11

12:15-12:40

1 stop29h 25m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£255

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

£255

LondonMontreal

STN London Stansted - YUL Montreal Pierre Elliott Trudeau Intl

STNYUL

London Stansted

Mon 2/11

16:35-12:40

1 stop25h 05m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£255

LondonToronto

LGW London Gatwick - YYZ Toronto Pearson Intl

LGWYYZ

London Gatwick

Thu 12/11

11:40-15:00

Nonstop8h 20m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£261

LondonMontreal

STN London Stansted - YUL Montreal Pierre Elliott Trudeau Intl

STNYUL

London Stansted

Sat 31/10

11:55-20:40

3 stops36h 45m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£263

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Mon 9/11

18:30-15:20

1 stop25h 50m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£281

LondonToronto

LGW London Gatwick - YYZ Toronto Pearson Intl

LGWYYZ

London Gatwick

Wed 14/10

09:25-16:10

1 stop11h 45m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£303

LondonToronto

LGW London Gatwick - YYZ Toronto Pearson Intl

LGWYYZ

London Gatwick

Sat 14/11

18:40-16:15

1 stop26h 35m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£307

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Sat 13/3

20:35-18:15

1 stop26h 40m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£308

Flights are sorted by cheapest return flights first.

Deals found on 16/9

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.

LGW-YYZ

LHR-YYZ

LCY-YYZ

STN-YUL

LHR-YUL

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

LGW-YYZ

LHR-YYZ

LCY-YYZ

STN-YUL

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 £405). Flying from London to Region of Ontario in August is currently the most expensive (average of £614). 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 Tuesday (42 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (26 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 £398 and £521 in October.
The cheapest return price found within the last 5 days was £350 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

11,639 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

744 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

8,228 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?
Air Transat, KLM, and United Airlines can get you from London to Region of Ontario in just under 7h 50m. Your travel time can differ by up to 10h 05m. 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 (£181), and Air Transat (£207).
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 £311. On average you can expect to pay £1,473. The most popular route, (London Heathrow - Toronto Pearson Intl), can usually be booked for £92.
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 £405). Flying from London to Region of Ontario in August is currently the most expensive (average of £614). 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

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Alternative routes for London to Ontario

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Heathrow to Victoria flights

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London City to Winnipeg flights

Birmingham to Toronto Island flights

Top 10 airlines flying from London to Ontario

Airline	Cheapest	Average	Flexibility	On-time
ITA Airways	Cheapest£264	Average£672	FlexibilityNo cancel fee	On-time81%	Search ITA Airways flights
Icelandair	Cheapest£272	Average£416	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Air Canada	Cheapest£319	Average£582	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Air Transat	Cheapest£332	Average£508	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
TAP AIR PORTUGAL	Cheapest£334	Average£558	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Virgin Atlantic	Cheapest£338	Average£551	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
American Airlines	Cheapest£348	Average£703	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
WestJet	Cheapest£360	Average£554	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
Aer Lingus	Cheapest£362	Average£550	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Lufthansa	Cheapest£362	Average£563	FlexibilityNo cancel fee	On-time76%	Search Lufthansa 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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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from London to Ontario from £231

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/11. 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 16 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 16 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 16 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 16 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 16 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 16 September 2026.

Last-minute flights from London to OntarioDiscover last-minute flight deals from London to Ontario. Data last updated 16 September 2026 and is based on user searches.

Discover last-minute flight deals from London to Ontario. Data last updated 16 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 16 September 2026.

Search for one-way flight options from London to Ontario. Find affordable one-way fares based on user searches. Data last updated 16 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 16 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 16 September 2026.

The most flights from LON to CAON are scheduled on a Tuesday (42 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (26 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 £398 and £521 in October.The cheapest return price found within the last 5 days was £350 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 16 September 2026.

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London to Ontario flights

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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 16 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 16 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 16 September 2026.

Last-minute flights from London to Ontario
Discover last-minute flight deals from London to Ontario. Data last updated 16 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 16 September 2026.

London to Region of Ontario flights typically cost between £398 and £521 in October.
The cheapest return price found within the last 5 days was £350 on SWISS (15 Oct–19 Oct).