Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from London to Ontario from £220

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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
LON — YYZ
3 Sep — 10 Sep1
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 29 August 2025.

Round-trip from

£357

One-way from

£220

Popular in

December

Cheapest in

February

Average price

£526

Good round-trip deal

£348 or less

Good one-way deal

£274 or less
Air Transat
  • Air Transat
  • 18/9-28/9
  • 2 total stops
  • 57h 35m total
  • London to Ontario
Search Deals
10/9
  • 10/9
  • 2 total stops
  • 31h 27m total
  • London to Ontario
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£10 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 August 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 29 August 2025.

Fri 5/911:35LGW - YTZ
1 stop15h 45mAir Transat
Mon 8/917:30YTZ - LGW
1 stop11h 20mAir Transat
Deal found 28/8£357
Thu 25/917:50LHR - YYZ
Nonstop7h 50mVirgin Atlantic
Thu 2/1022:30YYZ - LHR
Nonstop7h 10mVirgin Atlantic
Deal found 28/8£357
Fri 19/922:50STN - YYZ
2 stops23h 00mMultiple Airlines
Mon 22/923:55YYZ - STN
1 stop10h 25mMultiple Airlines
Deal found 28/8£357
Tue 23/920:45LGW - YYZ
2 stops22h 55mMultiple Airlines
Sun 28/922:10YYZ - LGW
1 stop17h 45mMultiple Airlines
Deal found 28/8£357
Tue 14/1011:35LGW - YTZ
1 stop27h 45mAir Transat
Fri 17/1021:00YTZ - LGW
1 stop31h 50mAir Transat
Deal found 28/8£358
Tue 11/1109:30LHR - YYZ
1 stop11h 45mLufthansa
Thu 20/1117:00YYZ - LHR
1 stop9h 10mLufthansa
Deal found 27/8£358
Wed 17/909:05STN - YYZ
1 stop11h 45mMultiple Airlines
Mon 6/1022:10YYZ - STN
1 stop12h 55mMultiple Airlines
Deal found 28/8£358
Fri 19/909:40LGW - YYZ
Nonstop8h 05mAir Transat
Mon 22/916:00YYZ - LGW
1 stop12h 50mAir Transat
Deal found 27/8£358
Sat 13/909:30LHR - YTZ
1 stop10h 15mAir Canada
Sat 20/915:25YTZ - LHR
1 stop10h 05mAir Canada
Deal found 28/8£358
Thu 25/911:35LGW - YTZ
1 stop11h 35mAir Transat
Sat 27/918:55YTZ - LGW
1 stop9h 55mAir Transat
Deal found 28/8£358
Fri 19/916:00LHR - YYZ
Nonstop7h 55mMultiple Airlines
Mon 22/923:35YYZ - LHR
Nonstop7h 15mMultiple Airlines
Deal found 28/8£358
Thu 28/811:35LGW - YUL
Nonstop7h 40mAir Transat
Sat 11/1022:05YUL - LGW
Nonstop6h 45mAir Transat
Deal found 27/8£358

Cheapflights Fare Finder

 
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 29 August 2025.
Use the filters below to find and compare flights from London to Ontario that are best for you.

Fly from

London

Fly to

Ontario

Route

Depart

Return

Price

LondonToronto

LGW - YTZ

LGWYTZ

London Gatwick

Sun 21/9

11:35-12:10

1 stop29h 35m

Toronto Island

Sun 28/9

21:00-09:50

1 stop31h 50m

£357

LondonToronto

STN - YYZ

STNYYZ

London Stansted

Fri 19/9

22:50-16:50

2 stops23h 00m

Toronto Pearson Intl

Mon 22/9

23:55-15:20

1 stop10h 25m

£357

LondonToronto

LGW - YTZ

LGWYTZ

London Gatwick

Tue 14/10

11:35-18:10

1 stop11h 35m

Toronto Island

Sat 18/10

08:50-09:50

1 stop20h 00m

£357

LondonToronto

LGW - YTZ

LGWYTZ

London Gatwick

Thu 18/9

11:35-08:20

1 stop25h 45m

Toronto Island

Sun 28/9

21:00-09:50

1 stop31h 50m

£357

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Tue 11/11

09:30-16:15

1 stop11h 45m

Toronto Pearson Intl

Sat 22/11

17:00-07:10

1 stop9h 10m

£358

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Thu 25/9

17:50-20:40

Nonstop7h 50m

Toronto Pearson Intl

Thu 2/10

22:30-10:40

Nonstop7h 10m

£358

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Sat 13/9

06:50-14:45

2 stops12h 55m

Toronto Island

Wed 17/9

10:20-06:30

2 stops15h 10m

£358

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Tue 11/11

06:30-13:05

1 stop11h 35m

Toronto Pearson Intl

Fri 21/11

20:25-08:30

Nonstop7h 05m

£358

LondonToronto

STN - YYZ

STNYYZ

London Stansted

Wed 8/10

22:00-14:10

1 stop21h 10m

Toronto Pearson Intl

Wed 15/10

22:10-14:25

1 stop11h 15m

£358

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Mon 22/9

09:30-16:45

1 stop12h 15m

Toronto Island

Tue 30/9

18:25-09:35

1 stop10h 10m

£358

Flights are sorted by cheapest return flights first.

Deals found on 27/8

Showing 1-10 of 60 results
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
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 London to Ontario

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 29 August 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 29 August 2025.

The most flights from LON to CAON are scheduled on a Thursday (43 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (16 on average).

How much does it cost for a return flight from London to Region of Ontario?

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 29 August 2025.
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
430 reviews
Check prices

Crew

8.5

Food

6.7

Boarding

7.9

Overall

7.7

Comfort

7.3

Entertainment

7.0

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
430 reviews
Air Transat
7.7
Good
430 reviews
Check prices

Crew

8.5

Food

6.7

Boarding

7.9

Overall

7.7

Comfort

7.3

Entertainment

7.0

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
7.4
Good
661 reviews
Air Transat
7.7
Good
430 reviews
Check prices

Crew

8.5

Food

6.7

Boarding

7.9

Overall

7.7

Comfort

7.3

Entertainment

7.0

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
10,000 reviews
Air Transat
7.7
Good
430 reviews
Check prices

Crew

8.5

Food

6.7

Boarding

7.9

Overall

7.7

Comfort

7.3

Entertainment

7.0

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
7,371 reviews
Air Transat
7.7
Good
430 reviews
Check prices

Crew

8.5

Food

6.7

Boarding

7.9

Overall

7.7

Comfort

7.3

Entertainment

7.0

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.
British Airways
6.7
Okay
7,320 reviews
Air Transat
7.7
Good
430 reviews
Check prices

Crew

8.5

Food

6.7

Boarding

7.9

Overall

7.7

Comfort

7.3

Entertainment

7.0

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

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.

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

    Air Transat, Lufthansa, and Virgin Atlantic can get you from London to Region of Ontario in just under 7h 50m. Your travel time can differ by up to 21h 45m. There are 3543 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 Air Transat (£221), WestJet (£254), and TAP AIR PORTUGAL (£256).

  • 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 (82%), Ethiopian Air (81%) and Air Canada (75%).

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

    The cheapest flight price from London to Region of Ontario is £350. On average you can expect to pay £1,002. The most popular route, (London Heathrow - Toronto Pearson Intl), can usually be booked for £329.

  • 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Pearson Intl flights
Gatwick to Pearson Intl flights
Heathrow to Vancouver Intl flights
Heathrow to Toronto Island flights
London City to Pearson Intl flights
Heathrow to Calgary flights
Heathrow to Pierre Elliott Trudeau Intl flights
Stansted to Pearson Intl flights
Luton to Pearson Intl flights
Gatwick to Toronto Island flights
Gatwick to Vancouver Intl flights
London City to Vancouver Intl flights
Gatwick to Calgary flights
Manchester to Pearson Intl flights
London City to Pierre Elliott Trudeau Intl flights
London City to Calgary flights
Gatwick to Pierre Elliott Trudeau Intl flights
Heathrow to Abbotsford flights
Heathrow to Halifax flights
Luton to Pierre Elliott Trudeau Intl flights
Edinburgh to Pearson Intl flights
Heathrow to Edmonton flights
Manchester to Vancouver Intl flights
Stansted to Pierre Elliott Trudeau Intl flights
Manchester to Toronto Island flights
Heathrow to Ottawa flights
Southend to Pearson Intl flights
Luton to Calgary flights
Gatwick to Edmonton flights
Manchester to Abbotsford flights
Edinburgh to Toronto Island flights
Stansted to Vancouver Intl flights
Gatwick to Halifax flights
Heathrow to Québec City flights
London City to Halifax flights
Birmingham to Pearson Intl flights
London City to Edmonton flights
Manchester to Calgary flights
Gatwick to Ottawa flights
London City to Québec City flights
Manchester to Halifax flights
Stansted to Calgary flights
Birmingham to Vancouver Intl flights
Gatwick to Québec City flights
Heathrow to Winnipeg flights
London City to Ottawa flights
Heathrow to Victoria flights
Luton to Vancouver Intl flights

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 29 August 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest£257Average£264FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
IcelandairCheapest£285Average£365FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£290Average£505FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
LufthansaCheapest£297Average£475FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Scandinavian AirlinesCheapest£297Average£444FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Air TransatCheapest£299Average£423FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Air CanadaCheapest£302Average£501FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapest£304Average£496FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
TAP AIR PORTUGALCheapest£305Average£527FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Virgin AtlanticCheapest£327Average£433FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic 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.

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.