Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from London to Ontario from £209

LON — YYZ
9 Dec — 16 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Ontario

Enter your travel dates to find the best prices.

Cheapest flights from London to Ontario

Thu 3/1220:35 -
1 stop26h 40m
Thu 21/119:40 -
1 stop18h 50m
Deal found 8/11£374
Wed 2/1212:15 -
1 stop11h 00m
Tue 8/1219:40 -
1 stop10h 10m
Deal found 4/11£374
Tue 1/1220:35 -
1 stop26h 40m
Tue 8/1219:40 -
1 stop18h 50m
Deal found 7/11£375
Thu 3/1212:15 -
1 stop11h 00m
Thu 10/1219:40 -
1 stop18h 50m
Deal found 5/11£376
Thu 3/1220:35 -
1 stop26h 40m
Sun 6/1219:40 -
1 stop18h 50m
Deal found 7/11£383
Thu 10/1212:15 -
1 stop11h 00m
Wed 7/420:45 -
1 stop10h 10m
Deal found 7/11£383
Mon 23/1106:35 -
2 stops16h 40m
Fri 27/1119:40 -
2 stops21h 10m
Deal found 8/11£383
Tue 1/1220:35 -
1 stop26h 40m
Sun 6/1219:40 -
1 stop18h 50m
Deal found 8/11£384
Mon 23/1122:35 -
2 stops24h 40m
Mon 30/1119:40 -
2 stops13h 25m
Deal found 7/11£384
Wed 25/1112:15 -
1 stop11h 00m
Tue 8/1219:40 -
1 stop10h 10m
Deal found 8/11£385
Thu 3/1206:45 -
2 stops16h 30m
Wed 9/1219:40 -
2 stops17h 10m
Deal found 5/11£385
Tue 24/1120:35 -
1 stop26h 40m
Thu 3/1219:40 -
1 stop18h 50m
Deal found 8/11£386

Find flight deals from London to Ontario

Round-trip from

£362

One-way from

£209

Popular in

August

Cheapest in

February

Average price

£423

Good round-trip deal

£424 or less

Good one-way deal

£298 or less
20/1-26/1
  • 20/1-26/1
  • 4 total stops
  • 35h 45m total
  • London to Ontario
Search Deals
12/4-31/12
  • 12/4-31/12
  • 2 total stops
  • 35h 05m total
  • London to Ontario
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£42 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 November 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

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonToronto

STN London Stansted - YYZ Toronto Pearson Intl

STNYYZ

London Stansted

Thu 3/12

12:30-19:50

2 stops36h 20m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£289

LondonToronto

LGW London Gatwick - YTZ Toronto Island

LGWYTZ

London Gatwick

Thu 26/11

14:45-18:04

2 stops32h 19m

Toronto Island

Wed 31/12

00:00-06:00

Nonstop0h 00m

£295

LondonToronto

LGW London Gatwick - YTZ Toronto Island

LGWYTZ

London Gatwick

Fri 20/11

07:00-18:59

2 stops40h 59m

Toronto Island

Wed 31/12

00:00-06:00

Nonstop0h 00m

£296

LondonToronto

LGW London Gatwick - YYZ Toronto Pearson Intl

LGWYYZ

London Gatwick

Fri 27/11

06:05-12:30

1 stop35h 25m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£296

LondonToronto

LGW London Gatwick - YTZ Toronto Island

LGWYTZ

London Gatwick

Tue 8/12

06:10-18:07

2 stops16h 57m

Toronto Island

Wed 31/12

00:00-06:00

Nonstop0h 00m

£301

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Tue 16/3

12:15-19:15

1 stop11h 00m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£304
Fastest return journey

LondonToronto

LGW London Gatwick - YYZ Toronto Pearson Intl

LGWYYZ

London Gatwick

Fri 4/12

11:40-15:00

Nonstop8h 20m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£332

LondonToronto

LCY London City - YYZ Toronto Pearson Intl

LCYYYZ

London City

Thu 28/1

09:15-16:15

1 stop12h 00m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£333

LondonToronto

LGW London Gatwick - YYZ Toronto Pearson Intl

LGWYYZ

London Gatwick

Fri 27/11

09:00-16:05

1 stop12h 05m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£338

LondonToronto

LGW London Gatwick - YYZ Toronto Pearson Intl

LGWYYZ

London Gatwick

Sun 17/1

10:40-21:15

1 stop15h 35m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£342

Flights are sorted by cheapest return flights first.

Deals found on 4/11

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from London to Ontario

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 £412). Flying from London to Region of Ontario in August is currently the most expensive (average of £618). 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 Saturday (34 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (23 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 £380 and £523 in January.
The cheapest return price found within the last 5 days was £362 on Multiple Airlines (20 Jan–26 Jan).

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

Booking 90 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
585 reviews
Check prices

Comfort

7.3

Entertainment

7.0

Food

6.7

Crew

8.5

Boarding

7.9

Overall

7.7

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
585 reviews
Air Transat
7.7
Good
585 reviews
Check prices

Comfort

7.3

Entertainment

7.0

Food

6.7

Crew

8.5

Boarding

7.9

Overall

7.7

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
7.5
Good
698 reviews
Air Transat
7.7
Good
585 reviews
Check prices

Comfort

7.3

Entertainment

7.0

Food

6.7

Crew

8.5

Boarding

7.9

Overall

7.7

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
11,876 reviews
Air Transat
7.7
Good
585 reviews
Check prices

Comfort

7.3

Entertainment

7.0

Food

6.7

Crew

8.5

Boarding

7.9

Overall

7.7

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
767 reviews
Air Transat
7.7
Good
585 reviews
Check prices

Comfort

7.3

Entertainment

7.0

Food

6.7

Crew

8.5

Boarding

7.9

Overall

7.7

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
8,292 reviews
Air Transat
7.7
Good
585 reviews
Check prices

Comfort

7.3

Entertainment

7.0

Food

6.7

Crew

8.5

Boarding

7.9

Overall

7.7

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?

    Icelandair, British Airways, and SWISS can get you from London to Region of Ontario in just under 15h 56m. Your travel time can differ by up to 10h 44m. There are 3557 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 (£147), KLM (£182), and Air Transat (£209).

  • 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 Croatia Airlines (90%), Egyptair (80%) and MEA (80%).

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

    The cheapest flight price from London to Region of Ontario is £330. On average you can expect to pay £1,254. The most popular route, (London Heathrow - Toronto Pearson Intl), can usually be booked for £280.

  • 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 £412). Flying from London to Region of Ontario in August is currently the most expensive (average of £618). 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

Alternative routes for London to Ontario

Heathrow to Pearson Intl flights
Heathrow to Vancouver Intl flights
Gatwick to Pearson Intl flights
Heathrow to Toronto Island flights
London City to Pearson Intl flights
Stansted to Pearson Intl flights
Luton to Pearson Intl flights
Gatwick to Vancouver Intl flights
Heathrow to Calgary flights
Heathrow to Pierre Elliott Trudeau Intl flights
London City to Vancouver Intl flights
Gatwick to Toronto Island flights
Heathrow to Abbotsford flights
Stansted to Vancouver Intl flights
Gatwick to Pierre Elliott Trudeau Intl flights
Stansted to Pierre Elliott Trudeau Intl flights
Luton to Vancouver Intl flights
Gatwick to Calgary flights
Manchester to Pearson Intl flights
London City to Pierre Elliott Trudeau Intl flights
Luton to Pierre Elliott Trudeau Intl flights
London City to Calgary flights
Southend to Pearson Intl flights
Heathrow to Ottawa flights
Manchester to Vancouver Intl flights
Stansted to Calgary flights
Manchester to Toronto Island flights
Edinburgh to Vancouver Intl flights
Luton to Calgary flights
Gatwick to Ottawa flights
Heathrow to Halifax flights
Gatwick to Abbotsford flights
Edinburgh to Pearson Intl flights
Birmingham to Pearson Intl flights
Manchester to Abbotsford flights
Manchester to Calgary flights
Heathrow to Edmonton flights
London City to Ottawa flights
Gatwick to Edmonton flights
Edinburgh to Toronto Island flights
Edinburgh to Abbotsford flights
Heathrow to Winnipeg flights
Newcastle upon Tyne to Vancouver Intl flights
Newcastle upon Tyne to Pearson Intl flights
London City to Edmonton flights
Birmingham to Toronto Island flights
London City to Abbotsford flights
Heathrow to St. John's flights

Top 10 airlines flying from London to Ontario

AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£257Average£419FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
ITA AirwaysCheapest£265Average£676FlexibilityNo cancel feeOn-time81%
Search ITA Airways flights
FinnairCheapest£285Average£565FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£338Average£551FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Air CanadaCheapest£341Average£616FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air TransatCheapest£341Average£515FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
LufthansaCheapest£357Average£567FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£362Average£536FlexibilityNo cancel feeOn-time70%
Search British Airways flights
WestJetCheapest£362Average£557FlexibilityNo cancel feeOn-time60%
Search WestJet flights
TAP AIR PORTUGALCheapest£363Average£570FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

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.