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

A quick flight from Region of Ontario to London can take about 9h 40m. Air Transat provides one of the quickest options available for as low as £444. The distance between Region of Ontario and London is about 3537 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?

£37 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 £169 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 Toronto Pearson Intl - London City.

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 £1,415, our data indicates the cheapest price to be £266. The most popular route (Toronto Pearson Intl - London Heathrow), is priced around £356.

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 20 September 2026.

Sat 17/1017:35 -

1 stop11h 55m

Thu 22/1009:25 -

1 stop11h 25m

Deal found 19/9£417

Sat 3/1019:50 -

Nonstop7h 05m

Sat 10/1009:40 -

Nonstop8h 05m

Deal found 19/9£417

Tue 22/908:19 -

1 stop18h 36m

Sun 11/1009:40 -

1 stop11h 50m

Deal found 15/9£417

Fri 20/1117:10 -

2 stops34h 45m

Tue 1/1210:20 -

1 stop34h 20m

Deal found 19/9£417

Sun 8/1119:40 -

2 stops17h 20m

Mon 16/1107:20 -

2 stops15h 55m

Deal found 18/9£417

Tue 17/1121:35 -

Nonstop7h 10m

Tue 24/1111:40 -

Nonstop8h 20m

Deal found 18/9£417

Tue 17/1117:20 -

1 stop12h 00m

Tue 24/1107:15 -

1 stop13h 35m

Deal found 19/9£417

Sun 4/1016:55 -

1 stop10h 00m

Wed 21/1011:35 -

1 stop13h 36m

Deal found 16/9£418

Wed 11/1119:40 -

1 stop18h 50m

Wed 18/1112:15 -

1 stop11h 00m

Deal found 15/9£418

Sat 10/1017:35 -

1 stop11h 55m

Thu 15/1009:25 -

1 stop11h 25m

Deal found 19/9£418

Sun 22/1117:25 -

1 stop17h 20m

Sat 28/1116:35 -

1 stop33h 40m

Deal found 18/9£418

Wed 4/1117:20 -

1 stop11h 30m

Mon 9/1108:20 -

1 stop12h 30m

Deal found 18/9£418

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 20 September 2026.

Sun 4/1016:55 -

1 stop10h 00m

Wed 21/1011:35 -

1 stop13h 36m

Deal found 16/9£418

Tue 13/1007:00 -

1 stop21h 50m

Wed 21/1011:35 -

1 stop27h 46m

Deal found 16/9£421

Thu 5/1118:45 -

1 stop21h 50m

Wed 11/1107:15 -

1 stop33h 55m

Deal found 17/9£440

Thu 19/1118:05 -

Nonstop7h 25m

Sat 28/1107:40 -

1 stop12h 15m

Deal found 19/9£469

Thu 26/1121:45 -

Nonstop7h 05m

Sat 5/1206:30 -

1 stop14h 10m

Deal found 15/9£475

Fri 16/1022:55 -

Nonstop7h 15m

Mon 19/1017:50 -

Nonstop7h 50m

Deal found 15/9£481

Thu 15/1016:40 -

1 stop10h 15m

Wed 21/1006:00 -

2 stops18h 21m

Deal found 16/9£490

Thu 3/1221:45 -

Nonstop7h 05m

Thu 24/1211:45 -

1 stop12h 30m

Deal found 15/9£494

Wed 7/1012:15 -

1 stop13h 30m

Tue 20/1008:45 -

2 stops29h 51m

Deal found 18/9£509

Tue 13/1019:55 -

1 stop13h 45m

Tue 20/1010:20 -

1 stop12h 35m

Deal found 17/9£566

Fri 2/1023:10 -

1 stop10h 30m

Thu 15/1015:40 -

1 stop11h 25m

Deal found 17/9£581

Fri 8/122:45 -

2 stops28h 35m

Wed 5/521:15 -

2 stops21h 45m

Deal found 17/9£590

Tue 10/1117:20 -

1 stop14h 20m

Tue 17/1109:10 -

1 stop11h 40m

Deal found 15/9£658

Thu 19/1120:15 -

1 stop32h 40m

Wed 25/1110:55 -

1 stop36h 25m

Deal found 19/9£840

Sat 17/1016:55 -

1 stop11h 55m

Wed 21/1011:35 -

1 stop13h 36m

Deal found 16/9£421

Fri 6/1120:10 -

1 stop13h 55m

Fri 13/1114:45 -

1 stop26h 55m

Deal found 16/9£449

Thu 15/1016:55 -

1 stop11h 55m

Wed 21/1011:35 -

1 stop13h 36m

Deal found 19/9£461

Mon 22/221:35 -

Nonstop7h 10m

Mon 1/311:40 -

Nonstop8h 20m

Deal found 16/9£425

Sun 22/1118:05 -

Nonstop7h 25m

Sat 28/1107:40 -

1 stop12h 15m

Deal found 18/9£469

Tue 20/1022:55 -

Nonstop7h 15m

Thu 29/1016:10 -

Nonstop7h 55m

Deal found 17/9£479

Sun 22/1120:15 -

1 stop13h 20m

Sun 29/1118:40 -

1 stop24h 25m

Deal found 15/9£449

Thu 22/1020:05 -

1 stop11h 30m

Wed 4/1109:15 -

1 stop12h 00m

Deal found 15/9£499

Sat 10/1010:00 -

1 stop18h 50m

Wed 21/1011:35 -

1 stop13h 36m

Deal found 19/9£461

Mon 26/1016:20 -

2 stops14h 30m

Mon 9/1106:50 -

2 stops18h 56m

Deal found 17/9£509

Mon 11/119:15 -

1 stop9h 15m

Wed 20/107:45 -

1 stop14h 30m

Deal found 18/9£515

Sun 11/1016:55 -

1 stop10h 00m

Wed 21/1011:35 -

1 stop13h 36m

Deal found 19/9£426

Wed 7/1022:55 -

Nonstop7h 15m

Thu 29/1016:10 -

Nonstop7h 55m

Deal found 15/9£481

Sun 14/217:55 -

1 stop9h 15m

Fri 26/210:00 -

1 stop10h 40m

Deal found 18/9£531

Fri 16/1019:00 -

Nonstop6h 30m

Fri 23/1014:05 -

Nonstop7h 35m

Deal found 17/9£500

Sat 5/1218:45 -

1 stop23h 00m

Fri 11/1207:15 -

1 stop34h 15m

Deal found 18/9£463

Find flight deals from Ontario to London

Round-trip from	£417
One-way from	£208
Popular in	December
Cheapest in	February
Average price	£483
Good round-trip deal	£421 or less
Good one-way deal	£206 or less

17/10-22/10
2 total stops
23h 20m total
Ontario to London

Search Deals

Air Transat
3/10-31/12
1 total stop
11h 45m total
Ontario to London

Search Deals

Highest demand for flights based on searches. 1% potential increase in price (£5 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% 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

MontrealLondon

YUL Montreal Pierre Elliott Trudeau Intl - LGW London Gatwick

YULLGW

Montreal Pierre Elliott Trudeau Intl

Fri 2/10

20:35-07:55

1 stop30h 20m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£215

TorontoLondon

YYZ Toronto Pearson Intl - LTN London Luton

YYZLTN

Toronto Pearson Intl

Sat 10/10

23:55-21:00

2 stops16h 05m

London Luton

Wed 31/12

00:00-18:00

Nonstop0h 00m

£218

Fastest return journey

MontrealLondon

YUL Montreal Pierre Elliott Trudeau Intl - LGW London Gatwick

YULLGW

Montreal Pierre Elliott Trudeau Intl

Tue 29/9

22:05-09:50

Nonstop6h 45m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£218

MontrealLondon

YUL Montreal Pierre Elliott Trudeau Intl - LGW London Gatwick

YULLGW

Montreal Pierre Elliott Trudeau Intl

Wed 30/9

23:45-08:35

1 stop27h 50m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£220

MontrealLondon

YUL Montreal Pierre Elliott Trudeau Intl - LGW London Gatwick

YULLGW

Montreal Pierre Elliott Trudeau Intl

Thu 22/10

23:45-08:40

1 stop27h 55m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£221

TorontoLondon

YYZ Toronto Pearson Intl - LTN London Luton

YYZLTN

Toronto Pearson Intl

Mon 5/10

19:15-22:05

1 stop21h 50m

London Luton

Wed 31/12

00:00-18:00

Nonstop0h 00m

£222

TorontoLondon

YYZ Toronto Pearson Intl - LTN London Luton

YYZLTN

Toronto Pearson Intl

Tue 6/10

23:40-23:40

1 stop19h 00m

London Luton

Wed 31/12

00:00-18:00

Nonstop0h 00m

£224

MontrealLondon

YUL Montreal Pierre Elliott Trudeau Intl - LGW London Gatwick

YULLGW

Montreal Pierre Elliott Trudeau Intl

Sun 22/11

21:45-15:45

1 stop13h 00m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£228

TorontoLondon

YTZ Toronto Island - LGW London Gatwick

YTZLGW

Toronto Island

Thu 1/10

10:00-09:50

1 stop18h 50m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£230

TorontoLondon

YTZ Toronto Island - LGW London Gatwick

YTZLGW

Toronto Island

Sat 3/10

16:55-09:50

1 stop11h 55m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£231

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 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-LHR

YUL-LHR

YTZ-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-LHR

YUL-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 £436). Flying from Region of Ontario to London in December is currently the most expensive (average of £693). 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 Friday (49 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (27 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 £438 and £567 in October.
The cheapest return price found within the last 5 days was £417 on Multiple Airlines (17 Oct–22 Oct).

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 9h 40m. Air Transat provides one of the quickest options available for as low as £444. The distance between Region of Ontario and London is about 3537 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?
£37 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 £169 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 Toronto Pearson Intl - London City.
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 £1,415, our data indicates the cheapest price to be £266. The most popular route (Toronto Pearson Intl - London Heathrow), is priced around £356.
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 £436). Flying from Region of Ontario to London in December is currently the most expensive (average of £693). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Ontario to London

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Top 7 airlines flying from Ontario to London

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£353	Average£655	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
KLM	Cheapest£380	Average£497	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Air Transat	Cheapest£396	Average£506	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
Air Canada	Cheapest£420	Average£602	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Lufthansa	Cheapest£424	Average£584	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Virgin Atlantic	Cheapest£426	Average£618	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
British Airways	Cheapest£478	Average£645	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 3/10. 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 20 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 20 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 20 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 20 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 20 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 20 September 2026.

Last-minute flights from Ontario to LondonDiscover last-minute flight deals from Ontario to London. Data last updated 20 September 2026 and is based on user searches.

Discover last-minute flight deals from Ontario to London. Data last updated 20 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 20 September 2026.

Search for one-way flight options from Ontario to London. Find affordable one-way fares based on user searches. Data last updated 20 September 2026.

Find flight deals from Ontario to London

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One-way from

Popular in

Cheapest in

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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 20 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 20 September 2026.

The most flights from CAON to LON are scheduled on a Friday (49 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (27 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 £438 and £567 in October.The cheapest return price found within the last 5 days was £417 on Multiple Airlines (17 Oct–22 Oct).

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 20 September 2026.

Ontario and London flights

Browse other Ontario and London flight options. Last updated on 20 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 20 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 20 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 20 September 2026.

Last-minute flights from Ontario to London
Discover last-minute flight deals from Ontario to London. Data last updated 20 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 20 September 2026.

Region of Ontario to London flights typically cost between £438 and £567 in October.
The cheapest return price found within the last 5 days was £417 on Multiple Airlines (17 Oct–22 Oct).