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Cheap flights from the United Kingdom to Ontario from C$ 400

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 11/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YYZ
29 May — 5 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to Ontario

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to Ontario
Explore the most affordable flight options available from United Kingdom to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 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
Tue 2/68:30 a.m.
STN
-
YYZ
1 stop12h 20m
Multiple Airlines
Tue 9/66:15 p.m.
YYZ
-
STN
2 stops20h 20m
Multiple Airlines
Deal found 28/4C$ 762
Thu 24/93:40 p.m.
LGW
-
YYZ
1 stop11h 25m
Icelandair
Thu 8/1011:10 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 stops15h 45m
Multiple Airlines
Sun 10/57:15 p.m.
YYZ
-
STN
1 stop9h 20m
Multiple Airlines
Deal found 27/4C$ 763

Find flight deals from United Kingdom to Ontario

Keep the following information in mind while searching for United Kingdom to Ontario flight deals. Data was last updated 29 April 2026.

Round-trip from

C$ 758

One-way from

C$ 400

Popular in

December

Cheapest in

February

Average price

C$ 846

Good round-trip deal

C$ 663 or less

Good one-way deal

C$ 546 or less
11/5-18/5
  • 11/5-18/5
  • 2 total stops
  • 30h 35m total
  • United Kingdom to Ontario
Search Deals
11/6
  • 11/6
  • 2 total stops
  • 14h 00m total
  • United Kingdom 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 United Kingdom to Ontario.
Search Deals
Price to beat on a one-way flight from United Kingdom to Ontario.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from United Kingdom 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 29 April 2026.
Use the filters below to find and compare flights from the United Kingdom to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonMontreal

LGW - YUL

LGWYUL

London Gatwick

Wed 10/6

5:55 p.m.-11:35 a.m.

1 stop22h 40m

Montreal Pierre Elliott Trudeau Intl

Wed 17/6

9:30 p.m.-10:30 p.m.

1 stop20h 00m

C$ 774

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Tue 1/9

1:00 p.m.-7:10 p.m.

1 stop11h 10m

Toronto Pearson Intl

Fri 11/9

11:10 p.m.-11:45 a.m.

1 stop31h 35m

C$ 780

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Sun 13/9

9:25 p.m.-10:05 p.m.

1 stop29h 40m

Toronto Pearson Intl

Mon 21/9

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

1 stop10h 10m

C$ 846

LondonToronto

LGW - YTZ

LGWYTZ

London Gatwick

Sun 13/9

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

1 stop11h 53m

Toronto Island

Fri 2/10

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

Tue 8/9

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

1 stop10h 00m

C$ 854

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

LondonMontreal

LGW - YUL

LGWYUL

London Gatwick

Mon 11/5

12:40 p.m.-7:30 p.m.

1 stop11h 50m

Montreal Pierre Elliott Trudeau Intl

Sat 23/5

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

Nonstop6h 45m

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

LHR - YYZ

LHRYYZ

London Heathrow

Mon 5/10

9:25 p.m.-7:10 p.m.

1 stop26h 45m

Toronto Pearson Intl

Sat 10/10

8:45 p.m.-8:20 p.m.

1 stop18h 35m

C$ 870

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 United Kingdom to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from United Kingdom 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 the United Kingdom to Ontario

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

Booking 78 days in advance of your planned departure date is, on average, the best time to get cheap flights from United Kingdom to Region of Ontario. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, September is the cheapest month in which you can book a flight from United Kingdom to Region of Ontario (average of C$ 769). Flying from United Kingdom to Region of Ontario in December 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 GB to ON?

Find hourly flight availability from United Kingdom 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 April 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from United Kingdom to Region of Ontario as you normally would.

Weekly flight availability from United Kingdom to Region of Ontario

Explore weekly flight availability from United Kingdom 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 April 2026.

The most flights from GB0 to CAON are scheduled on a Monday (40 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (21 on average).

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 April 2026.
Read reviews from past customers who have flown Air Transat,Virgin Atlantic, andAir Canada from the United Kingdom to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air Transat
7.8
Good
543 reviews
Check prices

Crew

8.5

Comfort

7.3

Entertainment

7.1

Overall

7.8

Food

6.8

Boarding

7.9

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
543 reviews
Air Transat
7.8
Good
543 reviews
Check prices

Crew

8.5

Comfort

7.3

Entertainment

7.1

Overall

7.8

Food

6.8

Boarding

7.9

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
7.4
Good
688 reviews
Air Transat
7.8
Good
543 reviews
Check prices

Crew

8.5

Comfort

7.3

Entertainment

7.1

Overall

7.8

Food

6.8

Boarding

7.9

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
10,981 reviews
Air Transat
7.8
Good
543 reviews
Check prices

Crew

8.5

Comfort

7.3

Entertainment

7.1

Overall

7.8

Food

6.8

Boarding

7.9

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
7,962 reviews
Air Transat
7.8
Good
543 reviews
Check prices

Crew

8.5

Comfort

7.3

Entertainment

7.1

Overall

7.8

Food

6.8

Boarding

7.9

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
543 reviews
Check prices

Crew

8.5

Comfort

7.3

Entertainment

7.1

Overall

7.8

Food

6.8

Boarding

7.9

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 United Kingdom 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 United Kingdom to Region of Ontario?

    Departing from United Kingdom to Region of Ontario will take you 11h. The distance from United Kingdom to Region of Ontario is about 5702 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    One-way options have recently been found by users for as low as C$ 287 on Aer Lingus. Other airlines that offer cheap prices include KLM from C$ 323 and WestJet from C$ 330 one-way.

  • Can I find deals for flights from United Kingdom to Ontario that include hotel bookings?

    Yes. In addition to deals on United Kingdom to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Ontario.

  • Can I find deals for business class flights from United Kingdom to Ontario?

    Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to Region of Ontario?

    Currently, September is the cheapest month in which you can book a flight from United Kingdom to Region of Ontario (average of C$ 769). Flying from United Kingdom to Region of Ontario in December 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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Alternative routes for United Kingdom 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 United Kingdom to Ontario

Discover the top 10 airlines that operate flights from United Kingdom 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 29 April 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 412AverageC$ 761FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapestC$ 436AverageC$ 1,130FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
LufthansaCheapestC$ 556AverageC$ 941FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air TransatCheapestC$ 580AverageC$ 999FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Virgin AtlanticCheapestC$ 605AverageC$ 1,020FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
TAP AIR PORTUGALCheapestC$ 621AverageC$ 864FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Air CanadaCheapestC$ 646AverageC$ 1,075FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
British AirwaysCheapestC$ 648AverageC$ 1,046FlexibilityNo cancel feeOn-time70%
Search British Airways flights
DeltaCheapestC$ 652AverageC$ 876FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
WestJetCheapestC$ 687AverageC$ 1,077FlexibilityNo cancel feeOn-time60%
Search WestJet 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 United Kingdom to Ontario?

When you search for this flight from United Kingdom 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 United Kingdom to Ontario?

Cheapflights simply makes it quick and affordable to book flights from United Kingdom to Ontario by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Yes, we can. To see specific flights from United Kingdom to Ontario with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from United Kingdom to Ontario become cheaper?

Yes! Start tracking prices for United Kingdom to Ontario flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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