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Cheap flights from London to Ontario from £227

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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
LON — YYZ
26 Feb — 5 Mar1
1 adult

Cheap flight deals from London to Ontario

Keep the following information in mind while searching for London to Ontario flight deals. Data was last updated 21 February 2025.

Round-trip from

£327

One-way from

£227

Popular in

August

Cheapest in

February

Average price

£391

Good round-trip deal

£335 or less

Good one-way deal

£288 or less
Icelandair
  • Icelandair
  • 29/4-5/5
  • 2 total stops
  • 24h 05m total
  • London to Ontario
Search Deals
6/3
  • 6/3
  • 1 total stop
  • 25h 30m total
  • London to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£49 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 February 2025
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

Find flight deals from London to Ontario

Cheapest flights from London to Ontario
Explore the most affordable flight options available from London to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Tue 29/415:40LGW - YYZ
1 stop11h 15mIcelandair
Mon 5/520:50YYZ - LGW
1 stop12h 50mIcelandair
Deal found 19/2£327
Fri 7/308:55LHR - YYZ
1 stop12h 25mAir Canada
Sat 22/322:05YYZ - LHR
1 stop18h 30mAir Canada
Deal found 20/2£328
Fri 2/512:40LGW - YYZ
Nonstop8h 00mAir Transat
Sun 11/522:45YYZ - LGW
Nonstop7h 00mAir Transat
Deal found 20/2£328
Wed 7/513:30LHR - YYZ
1 stop11h 15mLufthansa
Sun 11/523:35YYZ - LHR
Nonstop7h 15mLufthansa
Deal found 20/2£330
Fri 2/511:35LGW - YTZ
1 stop27h 45mAir Transat
Fri 9/520:55YTZ - LGW
1 stop31h 55mAir Transat
Deal found 20/2£338
Wed 12/313:30LHR - YYZ
1 stop11h 25mMultiple Airlines
Sat 22/321:10YYZ - LHR
Nonstop7h 20mMultiple Airlines
Deal found 20/2£339
Sun 23/306:00LHR - YTZ
2 stops15h 50mAir Canada
Tue 1/415:25YTZ - LHR
1 stop10h 05mAir Canada
Deal found 20/2£345
Fri 7/318:45LGW - YYZ
1 stop26h 35mSWISS
Sat 22/321:30YYZ - LGW
1 stop16h 20mSWISS
Deal found 20/2£345
Sat 8/308:55LHR - YYZ
1 stop12h 25mSWISS
Sat 22/321:30YYZ - LHR
1 stop17h 45mSWISS
Deal found 20/2£349
Tue 29/410:25LHR - YYZ
1 stop32h 25mAustrian Airlines
Mon 5/517:45YYZ - LHR
1 stop33h 35mAustrian Airlines
Deal found 19/2£359
Tue 11/317:25LHR - YTZ
2 stops30h 25mSWISS
Tue 18/318:25YTZ - LHR
2 stops23h 00mSWISS
Deal found 20/2£368
Mon 10/310:00LCY - YYZ
1 stop14h 55mLufthansa
Sun 4/516:30YYZ - LCY
1 stop18h 55mLufthansa
Deal found 20/2£371

Find flights from London to Ontario within your budget

Customise your flight search to find flights from London to Ontario 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 21 February 2025.

Fly from

London

Fly to

Ontario

Route

Depart

Return

Price

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Tue 29/4

15:40-21:55

1 stop11h 15m

Toronto Pearson Intl

Mon 5/5

20:50-14:40

1 stop12h 50m

£327

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Fri 7/3

08:55-16:20

1 stop12h 25m

Toronto Pearson Intl

Sat 22/3

21:10-08:30

Nonstop7h 20m

£328

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Fri 2/5

12:40-15:40

Nonstop8h 00m

Toronto Pearson Intl

Sun 11/5

22:45-10:45

Nonstop7h 00m

£328

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Wed 7/5

13:30-19:45

1 stop11h 15m

Toronto Pearson Intl

Sun 11/5

23:35-11:50

Nonstop7h 15m

£330

LondonToronto

LGW - YTZ

LGWYTZ

London Gatwick

Fri 2/5

11:35-10:20

1 stop27h 45m

Toronto Island

Fri 9/5

20:55-09:50

1 stop31h 55m

£338

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Wed 12/3

13:30-20:55

1 stop11h 25m

Toronto Pearson Intl

Sat 22/3

21:10-08:30

Nonstop7h 20m

£339

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Sun 23/3

06:00-17:50

2 stops15h 50m

Toronto Island

Tue 1/4

15:25-06:30

1 stop10h 05m

£345

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Fri 7/3

18:45-16:20

1 stop26h 35m

Toronto Pearson Intl

Sat 22/3

21:30-17:50

1 stop16h 20m

£345

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Sat 8/3

08:55-16:20

1 stop12h 25m

Toronto Pearson Intl

Sat 22/3

21:30-19:15

1 stop17h 45m

£349

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Tue 29/4

10:25-13:50

1 stop32h 25m

Toronto Pearson Intl

Mon 5/5

17:45-08:20

1 stop33h 35m

£359

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 60 results
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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
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.

Travel insights for flights from London to Ontario

Get recent, data-driven insights about flights from London to Ontario including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from London to Region of Ontario (average of £490). Flying from London to Region of Ontario in July is currently the most expensive (average of £708). 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?

Find hourly flight availability from London to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 February 2025.

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

Explore weekly flight availability from London to Ontario. 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 21 February 2025.

The most flights from LON to CAON are scheduled on a Wednesday (33 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (23 on average).

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Region of Ontario ranges from 51.0 - 83.0 inches per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Region of Ontario, 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 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated 21 February 2025.
Read reviews from past customers who have flown Delta, KLM and Air Transat from London to Ontario. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
8,212 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

Delta
8.0
Very Good
8,212 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

Air Transat
7.8
Good
380 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

LOT
7.6
Good
1,080 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

Finnair
7.6
Good
1,273 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

Related info for your journey

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

  • 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 Air Transat (£257), TAP AIR PORTUGAL (£270), and WestJet (£271).

  • 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 Thai Airways (93%), Ethiopian Air (92%) and SriLankan Airlines (90%).

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

    The cheapest flight price from London to Region of Ontario is £349. On average you can expect to pay £1,081. The most popular route, (London Heathrow - Toronto Pearson Intl), can usually be booked for £339.

  • 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, January is the cheapest month in which you can book a flight from London to Region of Ontario (average of £490). Flying from London to Region of Ontario in July is currently the most expensive (average of £708). 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 London to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from London to Ontario

Discover the top 10 airlines that operate flights from London to Ontario. 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 21 February 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£268Average£550FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
TAP AIR PORTUGALCheapest£268Average£592FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
PLAYCheapest£275Average£389FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
IcelandairCheapest£306Average£444FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
IberiaCheapest£319Average£754FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Air TransatCheapest£327Average£608FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Virgin AtlanticCheapest£351Average£613FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Scandinavian AirlinesCheapest£370Average£539FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
British AirwaysCheapest£378Average£532FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£379Average£605FlexibilityNo cancel feeOn-time75%
Search KLM 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 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.

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