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. KLM provides one of the quickest options available for as low as £478. The distance between Region of Ontario and London is about 3543 mi. Generally, flights for this route are direct.

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 Air Transat and TAP AIR PORTUGAL, with prices starting from £178 and £196, 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 £1,016, our data indicates the cheapest price to be £253. The most popular route (Toronto Pearson Intl - London Heathrow), is priced around £364.

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 Virgin Atlantic 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.

£215+ 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 October 2026.

Tue 24/1116:00 -

2 stops26h 55m

Mon 7/1219:05 -

2 stops23h 45m

Deal found 29/10£414

Sun 22/1119:40 -

1 stop10h 10m

Tue 1/1220:35 -

1 stop26h 40m

Deal found 29/10£414

Thu 12/1120:25 -

1 stop14h 55m

Sat 14/1115:30 -

1 stop26h 30m

Deal found 26/10£415

Fri 13/1121:35 -

Nonstop7h 10m

Sat 21/1111:40 -

Nonstop8h 20m

Deal found 29/10£415

Sun 15/1119:40 -

1 stop18h 50m

Thu 3/1212:15 -

1 stop11h 00m

Deal found 29/10£416

Tue 1/1219:40 -

2 stops16h 00m

Tue 8/1208:00 -

2 stops15h 15m

Deal found 28/10£416

Wed 18/1119:40 -

1 stop18h 50m

Tue 1/1220:35 -

1 stop26h 40m

Deal found 29/10£417

Sat 5/1221:35 -

Nonstop7h 10m

Sun 13/1211:40 -

Nonstop8h 20m

Deal found 28/10£417

Tue 1/1219:40 -

2 stops21h 20m

Tue 8/1207:00 -

2 stops16h 15m

Deal found 29/10£417

Thu 26/1119:40 -

1 stop18h 50m

Wed 2/1220:35 -

1 stop26h 40m

Deal found 28/10£417

Sun 15/1119:40 -

1 stop10h 15m

Wed 25/1111:55 -

1 stop11h 20m

Deal found 26/10£417

Tue 8/1219:40 -

1 stop14h 20m

Sun 13/1206:05 -

1 stop17h 10m

Deal found 29/10£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 30 October 2026.

Thu 19/1118:45 -

1 stop21h 50m

Sat 5/1207:55 -

1 stop33h 15m

Deal found 27/10£468

Sat 14/1121:45 -

Nonstop7h 05m

Mon 23/1116:10 -

Nonstop7h 55m

Deal found 28/10£478

Thu 3/1221:45 -

Nonstop7h 05m

Thu 10/1216:10 -

Nonstop7h 55m

Deal found 25/10£480

Thu 28/121:45 -

Nonstop7h 05m

Sat 6/206:30 -

1 stop14h 10m

Deal found 28/10£480

Tue 3/1115:35 -

2 stops14h 15m

Tue 1/1211:10 -

2 stops17h 16m

Deal found 26/10£510

Sat 13/217:40 -

1 stop11h 05m

Wed 3/311:40 -

1 stop11h 15m

Deal found 28/10£512

Sun 17/119:20 -

2 stops56h 00m

Thu 21/108:00 -

2 stops15h 45m

Deal found 27/10£530

Thu 14/117:30 -

1 stop17h 20m

Tue 2/216:35 -

1 stop33h 40m

Deal found 26/10£655

Tue 29/1217:40 -

1 stop11h 05m

Thu 7/111:40 -

1 stop11h 14m

Deal found 26/10£768

Fri 2/412:30 -

2 stops14h 55m

Thu 15/418:35 -

2 stops28h 02m

Deal found 26/10£830

Sat 28/1118:45 -

1 stop23h 05m

Sat 5/1207:55 -

1 stop33h 15m

Deal found 25/10£471

Wed 2/1220:45 -

1 stop32h 10m

Mon 7/1210:55 -

1 stop36h 25m

Deal found 28/10£960

Sat 14/1121:45 -

Nonstop7h 05m

Sat 21/1116:10 -

Nonstop7h 55m

Deal found 29/10£494

Mon 9/1118:30 -

1 stop16h 15m

Thu 19/1110:00 -

1 stop11h 10m

Deal found 29/10£497

Fri 6/1106:00 -

1 stop20h 45m

Sat 14/1108:55 -

1 stop15h 50m

Deal found 29/10£499

Tue 1/1216:20 -

2 stops13h 30m

Fri 4/1206:50 -

2 stops18h 47m

Deal found 27/10£510

Sun 14/217:40 -

1 stop11h 05m

Wed 3/311:40 -

1 stop11h 15m

Deal found 28/10£512

Mon 19/421:15 -

1 stop20h 00m

Mon 3/519:40 -

1 stop23h 45m

Deal found 26/10£480

Wed 11/1122:20 -

1 stop12h 25m

Wed 18/1110:00 -

1 stop11h 10m

Deal found 26/10£498

Thu 3/1221:45 -

Nonstop7h 05m

Sun 13/1208:55 -

2 stops19h 12m

Deal found 26/10£501

Tue 2/311:15 -

2 stops14h 55m

Fri 5/309:00 -

2 stops18h 33m

Deal found 25/10£552

Mon 9/1117:25 -

2 stops12h 25m

Fri 13/1110:25 -

1 stop15h 50m

Deal found 27/10£519

Thu 12/1121:35 -

Nonstop7h 10m

Thu 19/1111:40 -

Nonstop8h 20m

Deal found 28/10£525

Thu 3/1214:45 -

2 stops22h 00m

Thu 10/1220:50 -

2 stops29h 32m

Deal found 25/10£480

Thu 26/1117:15 -

1 stop10h 15m

Thu 3/1211:10 -

1 stop16h 26m

Deal found 27/10£558

Sun 10/118:00 -

1 stop11h 30m

Sat 30/116:10 -

Nonstop7h 55m

Deal found 26/10£510

Tue 1/1218:00 -

2 stops16h 45m

Tue 8/1210:00 -

1 stop11h 10m

Deal found 26/10£520

Tue 10/1112:05 -

1 stop14h 50m

Fri 13/1107:40 -

1 stop14h 02m

Deal found 27/10£525

Fri 12/217:40 -

1 stop11h 05m

Wed 3/311:40 -

1 stop11h 15m

Deal found 28/10£531

Thu 26/1118:45 -

1 stop14h 20m

Thu 3/1207:15 -

1 stop33h 55m

Deal found 26/10£489

Find flight deals from Ontario to London

Round-trip from	£414
One-way from	£215
Popular in	December
Cheapest in	February
Average price	£483
Good round-trip deal	£399 or less
Good one-way deal	£202 or less

Icelandair
22/11-1/12
2 total stops
36h 50m total
Ontario to London

Search Deals

WestJet
25/1-31/12
2 total stops
37h 55m total
Ontario to London

Search Deals

Highest demand for flights based on searches. 2% potential increase in price (£11 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£12 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Price to beat on a round-trip flight from 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

Sun 29/11

17:50-09:05

3 stops34h 15m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£217

TorontoLondon

YTZ Toronto Island - LGW London Gatwick

YTZLGW

Toronto Island

Mon 30/11

17:50-08:50

3 stops34h 00m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£226

TorontoLondon

YYZ Toronto Pearson Intl - LTN London Luton

YYZLTN

Toronto Pearson Intl

Sun 15/11

20:15-18:05

1 stop16h 50m

London Luton

Wed 31/12

00:00-18:00

Nonstop0h 00m

£235

TorontoLondon

YYZ Toronto Pearson Intl - LGW London Gatwick

YYZLGW

Toronto Pearson Intl

Sat 12/12

18:45-22:35

1 stop22h 50m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£235

TorontoLondon

YTZ Toronto Island - LGW London Gatwick

YTZLGW

Toronto Island

Sun 15/11

07:45-10:55

3 stops46h 10m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£238

TorontoLondon

YYZ Toronto Pearson Intl - LTN London Luton

YYZLTN

Toronto Pearson Intl

Sun 8/11

20:15-18:05

1 stop16h 50m

London Luton

Wed 31/12

00:00-18:00

Nonstop0h 00m

£239

OttawaLondon

YOW Ottawa - LHR London Heathrow

YOWLHR

Ottawa

Tue 8/12

06:10-12:50

1 stop25h 40m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£241

OttawaLondon

YOW Ottawa - LHR London Heathrow

YOWLHR

Ottawa

Thu 25/2

16:15-12:50

1 stop15h 35m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£249

TorontoLondon

YTZ Toronto Island - LHR London Heathrow

YTZLHR

Toronto Island

Sat 28/11

10:20-06:30

1 stop15h 10m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£250

TorontoLondon

YTZ Toronto Island - LHR London Heathrow

YTZLHR

Toronto Island

Wed 27/1

08:20-21:00

2 stops31h 40m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£251

Flights are sorted by cheapest return flights first.

Deals found on 29/10

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from Ontario to London

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

YYZ-LTN

YYZ-LGW

YYZ-LHR

YOW-LGW

YQG-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

YYZ-LTN

YYZ-LGW

YYZ-LHR

YOW-LGW

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 £439). Flying from Region of Ontario to London in December is currently the most expensive (average of £699). 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.

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 £424 and £536 in November.
The cheapest return price found within the last 5 days was £414 on Icelandair (22 Nov–1 Dec).

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 76 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. KLM provides one of the quickest options available for as low as £478. The distance between Region of Ontario and London is about 3543 mi. Generally, flights for this route are direct.
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 Air Transat and TAP AIR PORTUGAL, with prices starting from £178 and £196, 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 £1,016, our data indicates the cheapest price to be £253. The most popular route (Toronto Pearson Intl - London Heathrow), is priced around £364.
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 £439). Flying from Region of Ontario to London in December is currently the most expensive (average of £699). 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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Wembley

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Ilford

Hayes

Croydon

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Brentford

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Southall

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Dagenham

Dover

Folkestone

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Alternative routes for Ontario to London

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Winnipeg to Gatwick flights

Top 8 airlines flying from Ontario to London

Airline	Cheapest	Average	Flexibility	On-time
Aer Lingus	Cheapest£311	Average£641	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Icelandair	Cheapest£355	Average£569	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
KLM	Cheapest£381	Average£499	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Air Transat	Cheapest£392	Average£486	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
Air Canada	Cheapest£425	Average£605	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Lufthansa	Cheapest£425	Average£590	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Virgin Atlantic	Cheapest£428	Average£621	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
British Airways	Cheapest£480	Average£648	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

Fly with Cheapflights

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 £215

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/1. 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 October 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 October 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 October 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 October 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 October 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 October 2026.

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

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

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

Find flight deals from Ontario to London

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 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 October 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.

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 £424 and £536 in November.The cheapest return price found within the last 5 days was £414 on Icelandair (22 Nov–1 Dec).

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 76 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

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

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 October 2026.

Ontario and London flights

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

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Ontario to London flights

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Top 8 airlines flying from Ontario to London

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

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

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 October 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 October 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 October 2026.

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

Region of Ontario to London flights typically cost between £424 and £536 in November.
The cheapest return price found within the last 5 days was £414 on Icelandair (22 Nov–1 Dec).