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Cheap flights from London to Ontario from C$ 470

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 20/6. Fares are subject to change and may not be available on all flights or dates of travel.
LON — YYZ
11 Jul — 18 Jul1
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
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 11 June 2026.

Wed 1/76:15 a.m.
LTN
-
YYZ
2 stops13h 45m
Multiple Airlines
Mon 20/710:55 p.m.
YYZ
-
LTN
1 stop11h 50m
Multiple Airlines
Deal found 9/6C$ 786
Sat 12/97:25 a.m.
LHR
-
YYZ
1 stop16h 05m
Lufthansa
Fri 25/96:00 p.m.
YYZ
-
LHR
1 stop11h 00m
Lufthansa
Deal found 10/6C$ 786
Mon 15/611:35 a.m.
LGW
-
YTZ
1 stop10h 50m
Air Transat
Sun 5/76:55 p.m.
YTZ
-
LGW
1 stop9h 55m
Air Transat
Deal found 8/6C$ 786
Tue 14/78:10 a.m.
STN
-
YYZ
1 stop11h 00m
Multiple Airlines
Tue 21/79:55 p.m.
YYZ
-
STN
1 stop10h 20m
Multiple Airlines
Deal found 10/6C$ 786
Mon 29/611:35 a.m.
LGW
-
YYZ
1 stop12h 03m
Air Transat
Fri 10/711:15 p.m.
YYZ
-
LGW
1 stop29h 35m
Air Transat
Deal found 9/6C$ 786
Tue 3/116:50 a.m.
LHR
-
YTZ
2 stops13h 05m
Air Canada
Sat 14/118:20 a.m.
YTZ
-
LHR
2 stops17h 50m
Air Canada
Deal found 10/6C$ 786
Thu 25/612:40 p.m.
LTN
-
YYZ
2 stops29h 40m
Multiple Airlines
Tue 25/810:15 p.m.
YYZ
-
LTN
1 stop19h 10m
Multiple Airlines
Deal found 9/6C$ 787
Wed 9/99:30 a.m.
LHR
-
YYZ
1 stop11h 50m
Lufthansa
Wed 16/911:50 p.m.
YYZ
-
LHR
Nonstop7h 00m
Lufthansa
Deal found 9/6C$ 787
Mon 15/611:35 a.m.
LGW
-
YTZ
1 stop13h 40m
Air Transat
Sun 21/611:55 a.m.
YTZ
-
LGW
1 stop15h 00m
Air Transat
Deal found 11/6C$ 787
Thu 16/76:05 a.m.
STN
-
YYZ
1 stop12h 35m
Multiple Airlines
Tue 28/79:55 p.m.
YYZ
-
STN
1 stop10h 20m
Multiple Airlines
Deal found 10/6C$ 787
Wed 1/710:00 p.m.
LGW
-
YYZ
2 stops22h 00m
Multiple Airlines
Sun 19/76:15 p.m.
YYZ
-
LGW
2 stops12h 45m
Multiple Airlines
Deal found 10/6C$ 787
Thu 25/62:05 p.m.
LHR
-
YTZ
1 stop22h 46m
Air Canada
Fri 3/710:50 a.m.
YTZ
-
LHR
1 stop14h 40m
Air Canada
Deal found 11/6C$ 787

Find flight deals from London to Ontario

Keep the following information in mind while searching for London to Ontario flight deals. Data was last updated 11 June 2026.

Round-trip from

C$ 786

One-way from

C$ 470

Popular in

August

Cheapest in

February

Average price

C$ 864

Good round-trip deal

C$ 848 or less

Good one-way deal

C$ 571 or less
Air Transat
  • Air Transat
  • 30/6-16/7
  • 2 total stops
  • 21h 48m total
  • London to Ontario
Search Deals
20/6
  • 20/6
  • 2 total stops
  • 20h 55m total
  • London to Ontario
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 106 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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

 
Customize 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 629,999 searches. Data last updated 11 June 2026.
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 round-trip

LondonToronto

SEN - YYZ

SENYYZ

London Southend

Wed 2/9

4:50 p.m.-5:10 p.m.

1 stop29h 20m

Toronto Pearson Intl

Wed 9/9

11:45 p.m.-4:40 p.m.

1 stop11h 55m

C$ 790

LondonToronto

LGW - YTZ

LGWYTZ

London Gatwick

Sun 30/8

9:40 a.m.-4:33 p.m.

1 stop11h 53m

Toronto Island

Wed 9/9

6:55 p.m.-9:50 a.m.

1 stop9h 55m

C$ 799

LondonToronto

LGW - YTZ

LGWYTZ

London Gatwick

Fri 10/7

9:40 a.m.-6:58 p.m.

1 stop14h 18m

Toronto Island

Mon 20/7

6:55 p.m.-9:50 a.m.

1 stop9h 55m

C$ 807

LondonToronto

LGW - YTZ

LGWYTZ

London Gatwick

Sun 30/8

9:40 a.m.-4:33 p.m.

1 stop11h 53m

Toronto Island

Sun 13/9

4:55 p.m.-7:55 a.m.

1 stop10h 00m

C$ 813

LondonToronto

LGW - YTZ

LGWYTZ

London Gatwick

Tue 16/6

9:40 a.m.-6:58 p.m.

1 stop14h 18m

Toronto Island

Wed 8/7

4:55 p.m.-9:50 a.m.

1 stop11h 55m

C$ 820

LondonToronto

LGW - YTZ

LGWYTZ

London Gatwick

Tue 7/7

9:40 a.m.-4:33 p.m.

1 stop11h 53m

Toronto Island

Mon 20/7

6:55 p.m.-9:50 a.m.

1 stop9h 55m

C$ 824

LondonToronto

LTN - YYZ

LTNYYZ

London Luton

Mon 31/8

12:35 p.m.-11:00 a.m.

1 stop27h 25m

Toronto Pearson Intl

Sun 13/9

7:15 p.m.-10:20 p.m.

1 stop22h 05m

C$ 826
Quickest round-trip

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Thu 10/9

12:05 p.m.-2:55 p.m.

Nonstop7h 50m

Toronto Pearson Intl

Wed 30/9

6:35 p.m.-6:35 a.m.

Nonstop7h 00m

C$ 833

LondonToronto

STN - YYZ

STNYYZ

London Stansted

Sat 15/8

6:35 a.m.-12:25 a.m.

2 stops22h 50m

Toronto Pearson Intl

Tue 25/8

9:55 p.m.-10:20 p.m.

2 stops19h 25m

C$ 836

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Fri 3/7

6:50 a.m.-8:11 p.m.

2 stops18h 21m

Toronto Island

Fri 10/7

12:15 p.m.-9:00 a.m.

1 stop15h 45m

C$ 849

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/6

Showing 1-10 of 60 resultsSorted by cheapest first
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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 round-trip 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, February is the cheapest month in which you can book a flight from London to Region of Ontario (average of C$ 736). Flying from London to Region of Ontario in August is currently the most expensive (average of C$ 1,101). 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 11 June 2026.

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 11 June 2026.

The most flights from LON to CAON are scheduled on a Tuesday (41 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (25 on average).

How much does it cost to fly round-trip from London to Region of Ontario?

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

The price you pay for your flight from London to Region of Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 80 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 11 June 2026.
Read reviews from past customers who have flown Air Transat,Air Canada, andIcelandair from London to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air Transat
7.8
Good
555 reviews
Check prices

Food

6.8

Overall

7.8

Boarding

7.9

Crew

8.5

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

YOW - GCM

The flight was delayed for 3.5 hours. No compensation for a meal voucher. We were positioned at the back of the plane and the toilets were not working properly. It was a foul smell coming from the toilet.
Air Transat
7.8
Good
555 reviews
Air Transat
7.8
Good
555 reviews
Check prices

Food

6.8

Overall

7.8

Boarding

7.9

Crew

8.5

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

YOW - GCM

The flight was delayed for 3.5 hours. No compensation for a meal voucher. We were positioned at the back of the plane and the toilets were not working properly. It was a foul smell coming from the toilet.
Air Canada
7.1
Good
11,162 reviews
Air Transat
7.8
Good
555 reviews
Check prices

Food

6.8

Overall

7.8

Boarding

7.9

Crew

8.5

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

YOW - GCM

The flight was delayed for 3.5 hours. No compensation for a meal voucher. We were positioned at the back of the plane and the toilets were not working properly. It was a foul smell coming from the toilet.
Icelandair
7.0
Good
672 reviews
Air Transat
7.8
Good
555 reviews
Check prices

Food

6.8

Overall

7.8

Boarding

7.9

Crew

8.5

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

YOW - GCM

The flight was delayed for 3.5 hours. No compensation for a meal voucher. We were positioned at the back of the plane and the toilets were not working properly. It was a foul smell coming from the toilet.
Lufthansa
6.8
Okay
8,054 reviews
Air Transat
7.8
Good
555 reviews
Check prices

Food

6.8

Overall

7.8

Boarding

7.9

Crew

8.5

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

YOW - GCM

The flight was delayed for 3.5 hours. No compensation for a meal voucher. We were positioned at the back of the plane and the toilets were not working properly. It was a foul smell coming from the toilet.
British Airways
6.7
Okay
8,044 reviews
Air Transat
7.8
Good
555 reviews
Check prices

Food

6.8

Overall

7.8

Boarding

7.9

Crew

8.5

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

YOW - GCM

The flight was delayed for 3.5 hours. No compensation for a meal voucher. We were positioned at the back of the plane and the toilets were not working properly. It was a foul smell coming from the toilet.

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?

    Departing from London to Region of Ontario will take you 7h 50m. There are 5702 km between London and Region of Ontario. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines to fly from London to Region of Ontario one-way?

    The cheapest airlines for a one-way flight from London to Region of Ontario are Air Transat (C$ 414), Aer Lingus (C$ 414), and TAP AIR PORTUGAL (C$ 430).

  • 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 City - Toronto Pearson Intl.

  • What are the most reliable airlines from London to Region of Ontario?

    No one likes to see their flight delayed. When booking a flight from London to Region of Ontario consider choosing MEA (91%), Singapore Airlines (91%) or Aegean Airlines (90%) as they are the most reliable in getting you off to your destination on time.

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

    While on average a flight from London to Region of Ontario is generally C$ 1,161, our data shows the cheapest flight currently is C$ 622. When looking at the most popular route, (London Heathrow - Toronto Pearson Intl), you can expect to pay C$ 623 for that flight.

  • 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 vacation 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 C$ 736). Flying from London to Region of Ontario in August is currently the most expensive (average of C$ 1,101). 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

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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 629,999 searches. Data last updated 11 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapestC$ 523AverageC$ 1,081FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
LufthansaCheapestC$ 566AverageC$ 984FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air TransatCheapestC$ 614AverageC$ 981FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
IcelandairCheapestC$ 618AverageC$ 730FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
TAP AIR PORTUGALCheapestC$ 632AverageC$ 878FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
British AirwaysCheapestC$ 651AverageC$ 1,109FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air CanadaCheapestC$ 662AverageC$ 976FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 664AverageC$ 1,039FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapestC$ 718AverageC$ 1,212FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 734AverageC$ 1,312FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers 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?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from London to Ontario. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from London to Ontario?

Cheapflights helps you find that perfect flight to Ontario from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes! Cheapflights helps users easily find flights from London to Ontario with no change fees.

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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