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Cheap flights from Ontario to London from £192

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — LON
3 sept. — 10 sept.1
1 adult

Cheap flight deals from Ontario to London

Keep the following information in mind while searching for Ontario to London flight deals. Data was last updated 29 août 2025.

Round-trip from

£391

One-way from

£192

Popular in

December

Cheapest in

February

Average price

£546

Good round-trip deal

£490 or less

Good one-way deal

£282 or less
Air Canada
  • Air Canada
  • 2/12-6/12
  • 2 total stops
  • 23h 50m total
  • Ontario to London
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Air Transat
  • Air Transat
  • 7/10
  • 1 total stop
  • 14h 35m total
  • Ontario to London
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£12 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Ontario to London (LON).
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Price to beat on a one-way flight from Ontario to London (LON).
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Find flight deals from Ontario to London

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 29 août 2025.

mar. 2/1223:00YYZ - LHR
Nonstop7h 20mAir Canada
sam. 6/1209:00LHR - YYZ
2 stops16h 30mAir Canada
Deal found 28/8£391
lun. 3/1121:35YYZ - LGW
Nonstop7h 10mAir Transat
jeu. 13/1111:40LGW - YYZ
Nonstop8h 20mAir Transat
Deal found 28/8£391
ven. 3/1021:00YTZ - LGW
1 stop31h 50mAir Transat
jeu. 9/1011:35LGW - YTZ
1 stop15h 45mAir Transat
Deal found 27/8£392
mar. 14/1016:30YYZ - LHR
1 stop9h 00mMultiple Airlines
lun. 27/1006:35LHR - YYZ
1 stop13h 20mMultiple Airlines
Deal found 28/8£392
lun. 3/1121:35YYZ - LGW
Nonstop7h 10mAir Transat
sam. 29/1111:40LGW - YYZ
Nonstop8h 20mAir Transat
Deal found 28/8£392
ven. 12/923:55YYZ - STN
1 stop11h 40mMultiple Airlines
mer. 17/922:00STN - YYZ
2 stops27h 00mMultiple Airlines
Deal found 28/8£392
ven. 24/1018:20YYZ - LHR
Nonstop7h 15mAir Canada
ven. 31/1011:10LHR - YYZ
Nonstop8h 10mAir Canada
Deal found 27/8£392
mer. 17/923:55YYZ - LTN
1 stop10h 30mMultiple Airlines
mer. 1/1019:20LTN - YYZ
2 stops26h 30mMultiple Airlines
Deal found 27/8£392
dim. 5/1022:45YYZ - LGW
Nonstop7h 00mAir Transat
dim. 19/1012:40LGW - YYZ
Nonstop8h 00mAir Transat
Deal found 27/8£392
dim. 28/922:15YYZ - STN
1 stop16h 15mMultiple Airlines
lun. 13/1016:10STN - YYZ
1 stop27h 00mMultiple Airlines
Deal found 28/8£392
jeu. 23/1016:00YYZ - LHR
1 stop9h 30mMultiple Airlines
mer. 29/1007:40LHR - YYZ
1 stop12h 15mMultiple Airlines
Deal found 29/8£393
sam. 11/1022:45YYZ - LGW
Nonstop7h 00mAir Transat
ven. 24/1011:35LGW - YYZ
1 stop15h 06mAir Transat
Deal found 27/8£393

Cheapflights Fare Finder

 
Customise your flight search to find flights from Ontario to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 29 août 2025.
Use the filters below to find and compare flights from Ontario to London that are best for you.

Fly from

Ontario

Fly to

London

Route

Depart

Return

Price

TorontoLondon

YYZ - LGW

YYZLGW

Toronto Pearson Intl

lun. 3/11

21:35-09:45

Nonstop7h 10m

London Gatwick

ven. 14/11

11:40-15:00

Nonstop8h 20m

£391

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

jeu. 12/2

23:00-11:20

Nonstop7h 20m

London Heathrow

dim. 1/3

07:40-14:55

1 stop12h 15m

£392

TorontoLondon

YYZ - STN

YYZSTN

Toronto Pearson Intl

dim. 21/9

23:55-16:55

1 stop12h 00m

London Stansted

jeu. 25/9

06:55-20:00

2 stops18h 05m

£392

TorontoLondon

YTZ - LGW

YTZLGW

Toronto Island

mer. 8/10

08:50-09:50

1 stop20h 00m

London Gatwick

ven. 17/10

11:35-18:10

1 stop11h 35m

£392

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

ven. 13/2

18:10-06:30

Nonstop7h 20m

London Heathrow

dim. 1/3

07:40-14:55

1 stop12h 15m

£392

TorontoLondon

YYZ - STN

YYZSTN

Toronto Pearson Intl

mer. 17/9

23:55-14:25

1 stop9h 30m

London Stansted

ven. 26/9

06:40-15:50

1 stop14h 10m

£392

TorontoLondon

YTZ - LGW

YTZLGW

Toronto Island

lun. 6/10

08:50-09:50

1 stop20h 00m

London Gatwick

ven. 17/10

11:35-18:10

1 stop11h 35m

£392

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

mer. 11/2

18:10-06:30

Nonstop7h 20m

London Heathrow

dim. 1/3

07:40-14:55

1 stop12h 15m

£392

TorontoLondon

YYZ - STN

YYZSTN

Toronto Pearson Intl

ven. 12/9

23:55-16:35

1 stop11h 40m

London Stansted

mer. 17/9

22:00-20:00

2 stops27h 00m

£392

TorontoLondon

YTZ - LGW

YTZLGW

Toronto Island

sam. 11/10

08:50-09:50

1 stop20h 00m

London Gatwick

ven. 17/10

11:35-18:10

1 stop11h 35m

£392

Flights are sorted by cheapest return flights first.

Deals found on 28/8

Showing 1-10 of 60 results
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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.
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

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

Currently, January is the cheapest month in which you can book a flight from Region of Ontario to London (average of £112). Flying from Region of Ontario to London in August is currently the most expensive (average of £164). 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?

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 29 août 2025.

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 29 août 2025.

The most flights from CAON to LON are scheduled on a Thursday (49 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (14 on average).

Related info for your journey

Find useful and relevant information for your journey from Ontario to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    A quick flight from Region of Ontario to London can take about 7h 10m. Air Transat provides one of the quickest options available for as low as £391. The distance between Region of Ontario and London is about 3563 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?

    £192 is the cheapest one-way deal found within the past few days, from Air Transat. You may also be able to find cheap deals on TAP AIR PORTUGAL and WestJet, with prices starting from £195 and £197, 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 (85%), Air France (85%) and Delta (85%).

  • 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 £1,440, our data indicates the cheapest price to be £231. 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, January is the cheapest month in which you can book a flight from Region of Ontario to London (average of £112). Flying from Region of Ontario to London in August is currently the most expensive (average of £164). 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

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.
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Top 10 airlines flying from Ontario to London

Discover the top 10 airlines that operate flights from Ontario to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 29 août 2025.
AirlineCheapestAverageFlexibilityOn-time
Air TransatCheapest£337Average£466FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Aer LingusCheapest£362Average£452FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Porter AirlinesCheapest£369Average£481FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
IcelandairCheapest£370Average£473FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air CanadaCheapest£372Average£752FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Virgin AtlanticCheapest£386Average£480FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£396Average£599FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£400Average£523FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£402Average£513FlexibilityNo cancel feeOn-time75%
Search KLM flights
FinnairCheapest£412Average£455FlexibilityNo cancel feeOn-time76%
Search Finnair flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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