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

A quick flight from Region of Ontario to London can take about 7h 05m. Air Transat provides one of the quickest options available for as low as £472. The distance between Region of Ontario and London is about 3543 mi. Both multi-stop and direct flights can be found to your destination and back.

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

£38 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on TAP AIR PORTUGAL and Air Transat, with prices starting from £171 and £228, respectively.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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

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

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

Looking for the cheapest flight from Region of Ontario to London? While on average our users pay £1,373, our data indicates the cheapest price to be £258. The most popular route (Toronto Pearson Intl - London Heathrow), is priced around £345.

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

The top 3 most reliable airlines when flying from Region of Ontario to London are KLM (83%), SAUDIA (83%) and Air France (83%).

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

When booking a flight from Region of Ontario to London, you may want to consider flying on Air Canada, Air Transat or British Airways as they are the most popular for this route.

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

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

How can I find direct flights from Ontario to London?

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

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

Yes. Cheapflights offers flight deals from Ontario to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£208+ Cheap Flights from Ontario to London

Cheap flight deals from Ontario to London

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from Ontario to London
Explore the most affordable flight options available from Ontario to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 September 2026.

Tue 10/1119:40 -

2 stops19h 20m

Tue 17/1107:45 -

2 stops15h 30m

Deal found 30/9£418

Tue 10/1121:35 -

Nonstop7h 10m

Tue 17/1111:40 -

Nonstop8h 20m

Deal found 30/9£418

Tue 10/1119:40 -

2 stops13h 25m

Tue 17/1107:15 -

2 stops16h 00m

Deal found 30/9£418

Thu 1/1020:45 -

1 stop30h 10m

Fri 16/1009:40 -

1 stop14h 15m

Deal found 29/9£419

Sun 8/1119:40 -

1 stop10h 10m

Sat 21/1120:35 -

1 stop26h 40m

Deal found 29/9£419

Sun 15/1119:40 -

2 stops21h 15m

Sun 22/1107:00 -

2 stops16h 15m

Deal found 30/9£419

Sun 15/1121:35 -

Nonstop7h 10m

Wed 25/1111:40 -

Nonstop8h 20m

Deal found 30/9£419

Mon 30/1122:45 -

1 stop15h 35m

Tue 8/1206:05 -

1 stop14h 15m

Deal found 29/9£419

Thu 8/1020:45 -

1 stop30h 10m

Sun 11/1009:40 -

1 stop11h 50m

Deal found 29/9£420

Sat 7/1119:40 -

1 stop10h 10m

Sun 22/1120:35 -

1 stop26h 40m

Deal found 29/9£420

Fri 6/1119:45 -

1 stop17h 35m

Thu 12/1106:15 -

1 stop9h 55m

Deal found 28/9£420

Mon 12/1020:50 -

1 stop19h 30m

Mon 19/1022:45 -

1 stop18h 10m

Deal found 29/9£420

Best flights from Ontario to London
Discover carefully curated flight deals from Ontario to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 September 2026.

Wed 14/1020:50 -

1 stop13h 35m

Wed 21/1006:15 -

1 stop10h 10m

Deal found 30/9£421

Sun 11/1016:55 -

1 stop10h 00m

Fri 16/1009:40 -

1 stop11h 50m

Deal found 30/9£423

Wed 18/1121:35 -

Nonstop7h 10m

Wed 25/1111:40 -

Nonstop8h 20m

Deal found 27/9£425

Sat 21/1121:45 -

Nonstop7h 05m

Sat 5/1206:30 -

1 stop14h 10m

Deal found 26/9£472

Thu 15/1016:05 -

1 stop9h 25m

Tue 27/1011:10 -

Nonstop8h 15m

Deal found 27/9£477

Fri 6/1122:25 -

Nonstop7h 05m

Thu 12/1112:45 -

Nonstop8h 05m

Deal found 25/9£482

Sat 7/1119:40 -

1 stop11h 15m

Fri 13/1112:15 -

1 stop11h 00m

Deal found 26/9£489

Fri 30/1018:25 -

1 stop17h 20m

Fri 13/1110:00 -

1 stop10h 00m

Deal found 27/9£498

Fri 6/1117:10 -

1 stop10h 50m

Sun 6/1210:00 -

1 stop10h 00m

Deal found 29/9£513

Mon 12/1006:00 -

2 stops18h 55m

Fri 16/1016:40 -

1 stop12h 14m

Deal found 25/9£517

Mon 11/122:45 -

1 stop12h 00m

Sat 30/116:35 -

1 stop26h 50m

Deal found 30/9£571

Wed 11/1110:35 -

1 stop16h 55m

Wed 18/1106:00 -

2 stops17h 45m

Deal found 26/9£708

Mon 16/1120:15 -

1 stop32h 40m

Fri 27/1117:20 -

1 stop32h 40m

Deal found 29/9£845

Thu 21/118:45 -

1 stop20h 45m

Thu 28/107:15 -

1 stop33h 55m

Deal found 28/9£433

Sat 17/1010:00 -

1 stop18h 50m

Wed 21/1011:35 -

1 stop27h 46m

Deal found 25/9£450

Wed 2/1219:40 -

1 stop10h 10m

Tue 29/1212:15 -

1 stop10h 45m

Deal found 26/9£489

Thu 26/1117:35 -

1 stop10h 45m

Wed 9/1218:00 -

Nonstop8h 05m

Deal found 29/9£496

Fri 20/1117:25 -

1 stop10h 35m

Fri 27/1110:00 -

1 stop10h 00m

Deal found 27/9£498

Fri 9/1022:55 -

Nonstop7h 15m

Sun 25/1011:20 -

1 stop15h 36m

Deal found 29/9£498

Thu 19/1118:45 -

1 stop21h 50m

Wed 25/1115:10 -

1 stop26h 00m

Deal found 26/9£471

Thu 12/1112:05 -

1 stop14h 50m

Thu 19/1112:05 -

1 stop11h 52m

Deal found 28/9£523

Fri 29/117:10 -

1 stop17h 35m

Sun 7/210:00 -

2 stops19h 44m

Deal found 27/9£547

Fri 20/1117:25 -

1 stop18h 10m

Fri 27/1108:55 -

1 stop11h 05m

Deal found 25/9£498

Thu 10/1221:45 -

Nonstop7h 05m

Tue 15/1206:20 -

2 stops15h 50m

Deal found 28/9£499

Mon 26/1017:45 -

1 stop11h 00m

Sat 21/1107:40 -

1 stop12h 15m

Deal found 29/9£501

Mon 19/1020:45 -

1 stop12h 55m

Fri 6/1111:55 -

1 stop11h 20m

Deal found 25/9£507

Wed 18/1118:45 -

1 stop22h 45m

Wed 25/1115:10 -

1 stop26h 00m

Deal found 27/9£478

Wed 18/1122:45 -

1 stop11h 20m

Mon 7/1221:35 -

2 stops22h 45m

Deal found 29/9£582

Fri 30/1018:25 -

1 stop9h 30m

Fri 13/1106:20 -

1 stop13h 40m

Deal found 27/9£498

Wed 9/1209:45 -

1 stop17h 00m

Mon 11/108:55 -

1 stop15h 50m

Deal found 25/9£501

Find flight deals from Ontario to London

Round-trip from	£418
One-way from	£208
Popular in	December
Cheapest in	February
Average price	£492
Good round-trip deal	£428 or less
Good one-way deal	£208 or less

10/11-17/11
4 total stops
34h 50m total
Ontario to London

Search Deals

WestJet
19/11-31/12
1 total stop
15h 35m total
Ontario to London

Search Deals

Highest demand for flights based on searches. 1% potential increase in price (£6 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£11 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 Ontario to London (LON).

Search Deals

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

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

TorontoLondon

YTZ Toronto Island - LGW London Gatwick

YTZLGW

Toronto Island

Tue 13/10

16:55-09:50

1 stop11h 55m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£213

TorontoLondon

YTZ Toronto Island - LGW London Gatwick

YTZLGW

Toronto Island

Tue 6/10

10:00-09:50

1 stop18h 50m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£213

TorontoLondon

YYZ Toronto Pearson Intl - LTN London Luton

YYZLTN

Toronto Pearson Intl

Fri 9/10

23:40-23:55

1 stop19h 15m

London Luton

Wed 31/12

00:00-18:00

Nonstop0h 00m

£225

TorontoLondon

YTZ Toronto Island - LGW London Gatwick

YTZLGW

Toronto Island

Wed 18/11

11:40-17:45

2 stops25h 05m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£226

TorontoLondon

YTZ Toronto Island - LGW London Gatwick

YTZLGW

Toronto Island

Tue 17/11

14:45-16:40

2 stops20h 55m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£231

TorontoLondon

YYZ Toronto Pearson Intl - LTN London Luton

YYZLTN

Toronto Pearson Intl

Sat 21/11

18:45-13:45

1 stop14h 00m

London Luton

Wed 31/12

00:00-18:00

Nonstop0h 00m

£231

TorontoLondon

YYZ Toronto Pearson Intl - LTN London Luton

YYZLTN

Toronto Pearson Intl

Thu 12/11

18:45-14:05

1 stop14h 20m

London Luton

Wed 31/12

00:00-18:00

Nonstop0h 00m

£231

TorontoLondon

YTZ Toronto Island - LGW London Gatwick

YTZLGW

Toronto Island

Mon 16/11

14:45-16:40

2 stops20h 55m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£232

TorontoLondon

YYZ Toronto Pearson Intl - LGW London Gatwick

YYZLGW

Toronto Pearson Intl

Tue 20/10

17:35-20:25

2 stops21h 50m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£238

TorontoLondon

YYZ Toronto Pearson Intl - LGW London Gatwick

YYZLGW

Toronto Pearson Intl

Fri 23/10

22:55-15:40

1 stop11h 45m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£238

Flights are sorted by cheapest return flights first.

Deals found on 30/9

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from Ontario to London

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

YTZ-LGW

YYZ-LTN

YYZ-LGW

YYZ-LHR

YQT-LHR

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 Ontario to London

CAON-LON

YTZ-LGW

YYZ-LTN

YYZ-LGW

YYZ-LHR

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

Currently, February is the cheapest month in which you can book a flight from Region of Ontario to London (average of £442). Flying from Region of Ontario to London in December is currently the most expensive (average of £703). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

When flying from Region of Ontario to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Region of Ontario to London

The most flights from CAON to LON are scheduled on a Tuesday (49 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (28 on average).

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

Airfare is below average for this route at the moment.

Region of Ontario to London flights typically cost between £434 and £563 in November.
The cheapest return price found within the last 5 days was £418 on Multiple Airlines (10 Nov–17 Nov).

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

The best time to book flights from Region of Ontario to London is 50 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.

Related info for your journey

How long is the flight from Region of Ontario to London?
A quick flight from Region of Ontario to London can take about 7h 05m. Air Transat provides one of the quickest options available for as low as £472. The distance between Region of Ontario and London is about 3543 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest airlines to fly from Region of Ontario to London one-way?
£38 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on TAP AIR PORTUGAL and Air Transat, with prices starting from £171 and £228, respectively.
What are the most popular routes from Region of Ontario to London?
The most popular route from Region of Ontario to London is Toronto Pearson Intl - London Heathrow. You may also consider Toronto Pearson Intl - London Gatwick or Montreal Pierre Elliott Trudeau Intl - London Heathrow.
What are the most reliable airlines from Region of Ontario to London?
The top 3 most reliable airlines when flying from Region of Ontario to London are KLM (83%), SAUDIA (83%) and Air France (83%).
What are the cheapest flights from Region of Ontario to London?
Looking for the cheapest flight from Region of Ontario to London? While on average our users pay £1,373, our data indicates the cheapest price to be £258. The most popular route (Toronto Pearson Intl - London Heathrow), is priced around £345.
Can I find deals for flights from Ontario to London that include hotel bookings?
Yes. In addition to deals on Ontario to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Ontario to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to London.
Can I find deals for business class flights from Ontario to London?
Yes. Cheapflights offers flight deals from Ontario to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Region of Ontario to London?
Currently, February is the cheapest month in which you can book a flight from Region of Ontario to London (average of £442). Flying from Region of Ontario to London in December is currently the most expensive (average of £703). 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

Hounslow

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Luton

Gatwick

Wembley

Slough

Ilford

Hayes

Croydon

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Eastbourne

Enfield

Brentford

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Southall

Watford

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Dagenham

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Alternative routes for Ontario to London

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Winnipeg to Gatwick flights

Top 7 airlines flying from Ontario to London

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£357	Average£673	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
KLM	Cheapest£384	Average£502	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Air Transat	Cheapest£400	Average£506	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
Lufthansa	Cheapest£428	Average£590	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Air Canada	Cheapest£429	Average£612	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Virgin Atlantic	Cheapest£431	Average£622	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
British Airways	Cheapest£483	Average£651	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

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

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 London from Ontario today with Cheapflights!

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Ontario to London for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Ontario to London with no change fees?

Need flexible booking options for your flight to London from Ontario? 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 Ontario to London become cheaper?

Of course! You can now track prices for flights from Ontario to London 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 Ontario to London from £208

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ontario to London

Cheapest flights from Ontario to LondonExplore the most affordable flight options available from Ontario to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 September 2026.

Explore the most affordable flight options available from Ontario to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 September 2026.

Best flights from Ontario to LondonDiscover carefully curated flight deals from Ontario to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 September 2026.

Discover carefully curated flight deals from Ontario to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 September 2026.

Direct flights from Ontario to LondonExplore direct flight options from Ontario to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 September 2026.

Explore direct flight options from Ontario to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 September 2026.

Last-minute flights from Ontario to LondonDiscover last-minute flight deals from Ontario to London. Data last updated 30 September 2026 and is based on user searches.

Discover last-minute flight deals from Ontario to London. Data last updated 30 September 2026 and is based on user searches.

One-way flights from Ontario to LondonSearch for one-way flight options from Ontario to London. Find affordable one-way fares based on user searches. Data last updated 30 September 2026.

Search for one-way flight options from Ontario to London. Find affordable one-way fares based on user searches. Data last updated 30 September 2026.

Find flight deals from Ontario to London

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One-way from

Popular in

Cheapest in

Average price

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

Best time to book a flight from Ontario to London

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

Cheapflights Insights

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

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

Find hourly flight availability from Ontario to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 September 2026.

When flying from Region of Ontario to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Region of Ontario to London

Explore weekly flight availability from Ontario to London. 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 30 September 2026.

The most flights from CAON to LON are scheduled on a Tuesday (49 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (28 on average).

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

Airfare is below average for this route at the moment.

Region of Ontario to London flights typically cost between £434 and £563 in November.The cheapest return price found within the last 5 days was £418 on Multiple Airlines (10 Nov–17 Nov).

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

The best time to book flights from Region of Ontario to London is 50 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.

Related info for your journey

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

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

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

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

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

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

How can I find direct flights from Ontario to London?

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

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

Travelling to a place near London?

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Alternative routes for Ontario to London

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

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

Direct flights to England

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

Search flights from Ontario to London by cabin class

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Other flights to London

Explore flights to London departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 30 September 2026.

Ontario and London flights

Browse other Ontario and London flight options. Last updated on 30 September 2026.

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Ontario to London flights

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Top 7 airlines flying from Ontario to London

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

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Cheapest flights from Ontario to London
Explore the most affordable flight options available from Ontario to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 September 2026.

Best flights from Ontario to London
Discover carefully curated flight deals from Ontario to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 September 2026.

Direct flights from Ontario to London
Explore direct flight options from Ontario to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 September 2026.

Last-minute flights from Ontario to London
Discover last-minute flight deals from Ontario to London. Data last updated 30 September 2026 and is based on user searches.

One-way flights from Ontario to London
Search for one-way flight options from Ontario to London. Find affordable one-way fares based on user searches. Data last updated 30 September 2026.

Region of Ontario to London flights typically cost between £434 and £563 in November.
The cheapest return price found within the last 5 days was £418 on Multiple Airlines (10 Nov–17 Nov).