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Cheap flights from London to Ontario from C$ 477

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 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
LON — YYZ
15 Apr — 22 Apr1
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 16 March 2026.

Tue 21/43:40 p.m.
LGW
-
YYZ
1 stop32h 30m
Icelandair
Wed 20/58:45 p.m.
YYZ
-
LGW
1 stop10h 00m
Icelandair
Deal found 15/3C$ 632
Sun 12/43:40 p.m.
LGW
-
YYZ
1 stop32h 30m
Icelandair
Sun 19/48:45 p.m.
YYZ
-
LGW
1 stop12h 55m
Icelandair
Deal found 15/3C$ 634
Tue 14/43:40 p.m.
LGW
-
YYZ
1 stop32h 30m
Icelandair
Sun 19/48:45 p.m.
YYZ
-
LGW
1 stop12h 55m
Icelandair
Deal found 14/3C$ 635
Tue 14/43:40 p.m.
LGW
-
YYZ
1 stop32h 30m
Icelandair
Tue 21/48:45 p.m.
YYZ
-
LGW
1 stop12h 55m
Icelandair
Deal found 14/3C$ 637
Thu 30/43:40 p.m.
LGW
-
YYZ
1 stop11h 25m
Icelandair
Thu 7/511:10 p.m.
YYZ
-
LGW
1 stop10h 30m
Icelandair
Deal found 16/3C$ 638
Mon 13/43:40 p.m.
LGW
-
YYZ
1 stop11h 25m
Icelandair
Sun 19/48:45 p.m.
YYZ
-
LGW
1 stop12h 55m
Icelandair
Deal found 15/3C$ 639
Thu 30/41:00 p.m.
LGW
-
YYZ
1 stop14h 05m
Icelandair
Mon 4/511:10 p.m.
YYZ
-
LGW
1 stop10h 30m
Icelandair
Deal found 16/3C$ 641
Wed 15/43:40 p.m.
LGW
-
YYZ
1 stop32h 30m
Icelandair
Wed 6/511:10 p.m.
YYZ
-
LGW
1 stop10h 30m
Icelandair
Deal found 16/3C$ 645
Thu 2/73:40 p.m.
LGW
-
YYZ
1 stop11h 25m
Icelandair
Mon 6/711:10 p.m.
YYZ
-
LGW
1 stop10h 30m
Icelandair
Deal found 15/3C$ 646
Tue 21/43:40 p.m.
LGW
-
YYZ
1 stop32h 30m
Icelandair
Tue 28/48:45 p.m.
YYZ
-
LGW
1 stop12h 55m
Icelandair
Deal found 16/3C$ 648
Thu 16/41:05 p.m.
LHR
-
YYZ
1 stop14h 00m
Icelandair
Sun 26/48:45 p.m.
YYZ
-
LHR
1 stop10h 10m
Icelandair
Deal found 15/3C$ 663
Fri 17/49:25 p.m.
LHR
-
YYZ
1 stop26h 45m
Icelandair
Mon 20/411:10 p.m.
YYZ
-
LHR
1 stop16h 10m
Icelandair
Deal found 14/3C$ 664

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 16 March 2026.

Round-trip from

C$ 632

One-way from

C$ 477

Popular in

December

Cheapest in

September

Average price

C$ 805

Good round-trip deal

C$ 727 or less

Good one-way deal

C$ 515 or less
Icelandair
  • Icelandair
  • 21/4-20/5
  • 2 total stops
  • 42h 30m total
  • London to Ontario
Search Deals
11/4
  • 11/4
  • 3 total stops
  • 39h 20m total
  • London to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 59 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 16 March 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

LGW - YYZ

LGWYYZ

London Gatwick

Thu 7/5

3:40 p.m.-10:05 p.m.

1 stop11h 25m

Toronto Pearson Intl

Mon 11/5

11:10 p.m.-2:40 p.m.

1 stop10h 30m

C$ 694

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Thu 7/5

1:05 p.m.-7:10 p.m.

1 stop11h 05m

Toronto Pearson Intl

Mon 11/5

8:45 p.m.-11:55 a.m.

1 stop10h 10m

C$ 738

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Thu 16/4

3:40 p.m.-10:05 p.m.

1 stop11h 25m

Toronto Pearson Intl

Thu 30/4

8:45 p.m.-2:40 p.m.

1 stop12h 55m

C$ 757

LondonMontreal

LGW - YUL

LGWYUL

London Gatwick

Thu 28/5

7:00 p.m.-11:35 a.m.

1 stop21h 35m

Montreal Pierre Elliott Trudeau Intl

Thu 11/6

6:50 p.m.-10:05 p.m.

1 stop22h 15m

C$ 761
Quickest round-trip

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Tue 5/5

12:40 p.m.-3:40 p.m.

Nonstop8h 00m

Toronto Pearson Intl

Thu 21/5

7:50 p.m.-7:55 a.m.

Nonstop7h 05m

C$ 814

LondonToronto

LGW - YTZ

LGWYTZ

London Gatwick

Wed 13/5

11:35 a.m.-5:25 p.m.

1 stop10h 50m

Toronto Island

Fri 22/5

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

1 stop10h 00m

C$ 818

LondonMontreal

LGW - YUL

LGWYUL

London Gatwick

Tue 8/9

12:40 p.m.-12:37 a.m.

1 stop16h 57m

Montreal Pierre Elliott Trudeau Intl

Sun 20/9

10:05 p.m.-9:50 a.m.

Nonstop6h 45m

C$ 830

LondonToronto

LGW - YTZ

LGWYTZ

London Gatwick

Wed 13/5

11:35 a.m.-5:25 p.m.

1 stop10h 50m

Toronto Island

Tue 8/9

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

1 stop9h 55m

C$ 834

LondonToronto

LTN - YYZ

LTNYYZ

London Luton

Mon 1/6

6:05 p.m.-2:40 p.m.

1 stop25h 35m

Toronto Pearson Intl

Mon 8/6

9:30 p.m.-9:35 p.m.

1 stop19h 05m

C$ 844

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Wed 24/6

3:40 p.m.-10:05 p.m.

1 stop11h 25m

Toronto Pearson Intl

Thu 9/7

11:10 p.m.-2:40 p.m.

1 stop10h 30m

C$ 860

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/3

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, January is the cheapest month in which you can book a flight from London to Region of Ontario (average of C$ 392). Flying from London to Region of Ontario in December is currently the most expensive (average of C$ 675). 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 16 March 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 16 March 2026.

The most flights from LON to CAON are scheduled on a Monday (38 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (27 on average).

How much does it cost to fly round-trip 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 16 March 2026.
Read reviews from past customers who have flown 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
521 reviews
Check prices

Boarding

7.9

Crew

8.5

Overall

7.7

Comfort

7.3

Food

6.8

Entertainment

7.0

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
7.7
Good
521 reviews
Air Transat
7.7
Good
521 reviews
Check prices

Boarding

7.9

Crew

8.5

Overall

7.7

Comfort

7.3

Food

6.8

Entertainment

7.0

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.
Virgin Atlantic
7.5
Good
681 reviews
Air Transat
7.7
Good
521 reviews
Check prices

Boarding

7.9

Crew

8.5

Overall

7.7

Comfort

7.3

Food

6.8

Entertainment

7.0

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
10,806 reviews
Air Transat
7.7
Good
521 reviews
Check prices

Boarding

7.9

Crew

8.5

Overall

7.7

Comfort

7.3

Food

6.8

Entertainment

7.0

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
7,855 reviews
Air Transat
7.7
Good
521 reviews
Check prices

Boarding

7.9

Crew

8.5

Overall

7.7

Comfort

7.3

Food

6.8

Entertainment

7.0

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
7,794 reviews
Air Transat
7.7
Good
521 reviews
Check prices

Boarding

7.9

Crew

8.5

Overall

7.7

Comfort

7.3

Food

6.8

Entertainment

7.0

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 12h 10m. 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 WestJet (C$ 261), TAP AIR PORTUGAL (C$ 385), and Air Transat (C$ 395).

  • 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 - Montreal Pierre Elliott Trudeau 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 Ethiopian Air (90%), Thai Airways (90%) or KLM (88%) 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$ 1,554, our data shows the cheapest flight currently is C$ 533. When looking at the most popular route, (London Heathrow - Toronto Pearson Intl), you can expect to pay C$ 663 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, January is the cheapest month in which you can book a flight from London to Region of Ontario (average of C$ 392). Flying from London to Region of Ontario in December is currently the most expensive (average of C$ 675). 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.
Heathrow to Pearson Intl flights
Heathrow to Vancouver Intl flights
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Gatwick to Vancouver Intl flights
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Luton to Pearson Intl flights
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Stansted to Pierre Elliott Trudeau Intl flights
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London City to Calgary flights
Heathrow to Halifax flights
Luton to Pierre Elliott Trudeau Intl flights
Manchester to Vancouver Intl flights
Stansted to Calgary flights
Edinburgh to Pearson Intl flights
Southend to Pearson Intl flights
Luton to Calgary flights
Luton to Vancouver Intl flights
Southend to Pierre Elliott Trudeau Intl flights
Heathrow to Abbotsford flights
Heathrow to Ottawa flights
Edinburgh to Vancouver Intl flights
Gatwick to Halifax flights
Bristol to Pierre Elliott Trudeau Intl flights
Birmingham to Pearson Intl flights
Birmingham to Pierre Elliott Trudeau Intl flights
Manchester to Pierre Elliott Trudeau Intl flights
Manchester to Calgary flights
Edinburgh to Calgary flights
Gatwick to Ottawa flights
Heathrow to Edmonton flights
Edinburgh to Pierre Elliott Trudeau Intl flights
Newcastle upon Tyne to Pierre Elliott Trudeau Intl flights
Gatwick to Edmonton 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 629,999 searches. Data last updated 16 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapestC$ 437AverageC$ 1,064FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
LufthansaCheapestC$ 558AverageC$ 882FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air TransatCheapestC$ 596AverageC$ 864FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
IcelandairCheapestC$ 609AverageC$ 740FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
TAP AIR PORTUGALCheapestC$ 622AverageC$ 866FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
British AirwaysCheapestC$ 640AverageC$ 895FlexibilityNo cancel feeOn-time70%
Search British Airways flights
DeltaCheapestC$ 654AverageC$ 878FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapestC$ 654AverageC$ 1,009FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Virgin AtlanticCheapestC$ 702AverageC$ 871FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
United AirlinesCheapestC$ 723AverageC$ 1,292FlexibilityNo 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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