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Cheap flights from London to Ontario from C$ 472

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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
LON — YYZ
30 May — 6 Jun1
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 30 April 2026.

Mon 11/56:30 a.m.
STN
-
YYZ
1 stop11h 50m
Multiple Airlines
Mon 18/59:35 p.m.
YYZ
-
STN
1 stop18h 45m
Multiple Airlines
Deal found 28/4C$ 758
Thu 14/53:40 p.m.
LGW
-
YYZ
1 stop11h 25m
Icelandair
Thu 21/58:45 p.m.
YYZ
-
LGW
1 stop12h 55m
Icelandair
Deal found 28/4C$ 758
Sat 9/56:35 a.m.
STN
-
YYZ
2 stops20h 10m
Multiple Airlines
Sun 17/59:55 p.m.
YYZ
-
STN
1 stop19h 00m
Multiple Airlines
Deal found 27/4C$ 759
Fri 12/68:25 p.m.
LTN
-
YYZ
1 stop22h 35m
Multiple Airlines
Fri 19/611:05 p.m.
YYZ
-
LTN
1 stop13h 20m
Multiple Airlines
Deal found 27/4C$ 761
Thu 30/46:30 a.m.
STN
-
YYZ
1 stop11h 50m
Multiple Airlines
Sat 30/57:35 a.m.
YYZ
-
STN
2 stops43h 00m
Multiple Airlines
Deal found 25/4C$ 761
Mon 11/59:45 a.m.
LGW
-
YYZ
1 stop11h 05m
Multiple Airlines
Fri 5/611:05 p.m.
YYZ
-
LGW
1 stop13h 05m
Multiple Airlines
Deal found 27/4C$ 761
Mon 4/59:25 p.m.
LHR
-
YYZ
1 stop26h 45m
Icelandair
Mon 11/511:10 p.m.
YYZ
-
LHR
1 stop16h 10m
Icelandair
Deal found 27/4C$ 762
Sat 9/59:25 p.m.
LTN
-
YYZ
1 stop20h 55m
Multiple Airlines
Sun 17/59:55 p.m.
YYZ
-
LTN
1 stop16h 45m
Multiple Airlines
Deal found 27/4C$ 762
Sat 16/58:30 a.m.
STN
-
YYZ
1 stop11h 25m
Multiple Airlines
Thu 21/56:15 p.m.
YYZ
-
STN
2 stops22h 05m
Multiple Airlines
Deal found 29/4C$ 762
Thu 24/93:40 p.m.
LGW
-
YYZ
1 stop11h 25m
Icelandair
Wed 7/1011:10 p.m.
YYZ
-
LGW
1 stop10h 30m
Icelandair
Deal found 29/4C$ 762
Mon 11/58:15 a.m.
LTN
-
YYZ
1 stop12h 35m
Multiple Airlines
Tue 19/59:55 p.m.
YYZ
-
LTN
1 stop19h 55m
Multiple Airlines
Deal found 27/4C$ 763
Mon 4/56:30 a.m.
STN
-
YYZ
2 stops20h 15m
Multiple Airlines
Sun 10/57:15 p.m.
YYZ
-
STN
1 stop9h 20m
Multiple Airlines
Deal found 27/4C$ 763

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 30 April 2026.

Round-trip from

C$ 758

One-way from

C$ 472

Popular in

December

Cheapest in

February

Average price

C$ 846

Good round-trip deal

C$ 663 or less

Good one-way deal

C$ 633 or less
11/5-18/5
  • 11/5-18/5
  • 2 total stops
  • 30h 35m total
  • London to Ontario
Search Deals
5/5
  • 5/5
  • 2 total stops
  • 31h 05m total
  • London to Ontario
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (C$ 29 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 30 April 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

Sun 7/6

3:40 p.m.-7:10 p.m.

1 stop32h 30m

Toronto Pearson Intl

Thu 24/9

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

1 stop10h 30m

C$ 846

LondonToronto

LGW - YTZ

LGWYTZ

London Gatwick

Sun 13/9

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

1 stop11h 53m

Toronto Island

Sun 20/9

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

1 stop10h 00m

C$ 852

LondonToronto

LGW - YTZ

LGWYTZ

London Gatwick

Sun 6/9

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

1 stop11h 53m

Toronto Island

Mon 7/9

8:45 p.m.-7:55 a.m.

1 stop30h 10m

C$ 854

LondonToronto

LGW - YTZ

LGWYTZ

London Gatwick

Sun 6/9

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

1 stop11h 53m

Toronto Island

Tue 8/9

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

1 stop10h 00m

C$ 854

LondonToronto

LGW - YTZ

LGWYTZ

London Gatwick

Thu 10/9

11:35 a.m.-8:15 p.m.

1 stop13h 40m

Toronto Island

Sun 4/10

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

1 stop10h 00m

C$ 856

LondonToronto

LTN - YYZ

LTNYYZ

London Luton

Wed 20/5

3:30 p.m.-11:00 a.m.

1 stop24h 30m

Toronto Pearson Intl

Wed 10/6

7:15 p.m.-5:30 p.m.

1 stop17h 15m

C$ 859

LondonToronto

LTN - YYZ

LTNYYZ

London Luton

Mon 1/6

7:25 p.m.-11:00 a.m.

1 stop20h 35m

Toronto Pearson Intl

Mon 8/6

7:15 p.m.-5:10 p.m.

1 stop16h 55m

C$ 865

LondonToronto

LTN - YYZ

LTNYYZ

London Luton

Tue 19/5

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

1 stop21h 00m

Toronto Pearson Intl

Tue 26/5

7:15 p.m.-10:50 p.m.

1 stop22h 35m

C$ 865

LondonMontreal

LGW - YUL

LGWYUL

London Gatwick

Mon 24/8

4:20 p.m.-11:35 a.m.

1 stop24h 15m

Montreal Pierre Elliott Trudeau Intl

Mon 31/8

6:50 p.m.-9:05 p.m.

1 stop21h 15m

C$ 893

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Thu 21/5

7:25 a.m.-6:50 p.m.

1 stop16h 25m

Montreal Pierre Elliott Trudeau Intl

Sun 24/5

9:55 p.m.-9:35 a.m.

Nonstop6h 40m

C$ 917

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/4

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

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 78 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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$ 716). Flying from London to Region of Ontario in December is currently the most expensive (average of C$ 1,064). 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 30 April 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 30 April 2026.

The most flights from LON to CAON are scheduled on a Monday (42 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (21 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 30 April 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
546 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Overall

7.8

Boarding

7.9

Crew

8.5

Food

6.8

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
546 reviews
Air Transat
7.8
Good
546 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Overall

7.8

Boarding

7.9

Crew

8.5

Food

6.8

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
10,983 reviews
Air Transat
7.8
Good
546 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Overall

7.8

Boarding

7.9

Crew

8.5

Food

6.8

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
646 reviews
Air Transat
7.8
Good
546 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Overall

7.8

Boarding

7.9

Crew

8.5

Food

6.8

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
7,964 reviews
Air Transat
7.8
Good
546 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Overall

7.8

Boarding

7.9

Crew

8.5

Food

6.8

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
7,937 reviews
Air Transat
7.8
Good
546 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Overall

7.8

Boarding

7.9

Crew

8.5

Food

6.8

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 11h 53m. There are 5724 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$ 394), Aer Lingus (C$ 406), and TAP AIR PORTUGAL (C$ 422).

  • 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 Stansted - 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 Thai Airways (80%), United Airlines (79%) or Lufthansa (79%) 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$ 1,183, our data shows the cheapest flight currently is C$ 627. When looking at the most popular route, (London Heathrow - Toronto Pearson Intl), you can expect to pay C$ 725 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$ 716). Flying from London to Region of Ontario in December is currently the most expensive (average of C$ 1,064). 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 30 April 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 412AverageC$ 684FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapestC$ 436AverageC$ 1,061FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
LufthansaCheapestC$ 556AverageC$ 898FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air TransatCheapestC$ 602AverageC$ 913FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
TAP AIR PORTUGALCheapestC$ 621AverageC$ 864FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Air CanadaCheapestC$ 646AverageC$ 956FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
British AirwaysCheapestC$ 648AverageC$ 928FlexibilityNo cancel feeOn-time70%
Search British Airways flights
DeltaCheapestC$ 652AverageC$ 876FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapestC$ 704AverageC$ 1,190FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Virgin AtlanticCheapestC$ 709AverageC$ 967FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic 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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