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Cheap flights from the United Kingdom to Ontario from £214

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 21/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YYZ
24 Jul — 31 Jul1
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 24 June 2026.

Thu 2/713:00
LTN
-
YYZ
1 stop30h 55m
Multiple Airlines
Wed 8/722:10
YYZ
-
LTN
2 stops44h 15m
Multiple Airlines
Deal found 23/6£420
Tue 6/1008:45
LHR
-
YYZ
1 stop12h 25m
Air Canada
Fri 16/1018:35
YYZ
-
LHR
Nonstop7h 00m
Air Canada
Deal found 24/6£420
Thu 2/711:35
LGW
-
YTZ
1 stop15h 43m
Air Transat
Wed 8/720:55
YTZ
-
LGW
1 stop31h 55m
Air Transat
Deal found 22/6£420
Wed 1/722:45
STN
-
YYZ
2 stops21h 15m
Multiple Airlines
Wed 22/721:55
YYZ
-
STN
2 stops18h 25m
Multiple Airlines
Deal found 22/6£420
Thu 2/709:40
LGW
-
YYZ
Nonstop8h 05m
Air Transat
Sun 5/723:15
YYZ
-
LGW
1 stop29h 35m
Air Transat
Deal found 24/6£420
Fri 28/806:00
LHR
-
YYZ
1 stop11h 50m
Air Canada
Thu 3/918:35
YYZ
-
LHR
Nonstop7h 00m
Air Canada
Deal found 22/6£421
Sat 27/611:35
LGW
-
YTZ
1 stop13h 40m
Air Transat
Wed 8/720:55
YTZ
-
LGW
1 stop31h 55m
Air Transat
Deal found 22/6£421
Thu 23/706:05
STN
-
YYZ
1 stop12h 35m
Multiple Airlines
Sun 26/718:15
YYZ
-
STN
2 stops23h 05m
Multiple Airlines
Deal found 23/6£421
Wed 1/709:40
LGW
-
YYZ
Nonstop8h 05m
Air Transat
Tue 7/719:10
YYZ
-
LGW
1 stop9h 40m
Air Transat
Deal found 24/6£421
Wed 1/706:15
LTN
-
YYZ
2 stops13h 45m
Multiple Airlines
Fri 10/723:55
YYZ
-
LTN
1 stop19h 35m
Multiple Airlines
Deal found 23/6£422
Wed 23/908:40
LHR
-
YYZ
1 stop12h 30m
Multiple Airlines
Sat 26/915:00
YYZ
-
LHR
1 stop10h 30m
Multiple Airlines
Deal found 22/6£422
Fri 3/709:40
LGW
-
YTZ
1 stop11h 53m
Air Transat
Sun 19/716:55
YTZ
-
LGW
1 stop10h 00m
Air Transat
Deal found 24/6£422

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 24 June 2026.

Round-trip from

£420

One-way from

£214

Popular in

August

Cheapest in

February

Average price

£476

Good round-trip deal

£336 or less

Good one-way deal

£208 or less
Air Transat
  • Air Transat
  • 22/8-5/9
  • 2 total stops
  • 53h 35m total
  • United Kingdom to Ontario
Search Deals
21/9
  • 21/9
  • 2 total stops
  • 29h 00m total
  • United Kingdom to Ontario
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£33 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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

 
Customise 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 858,174 searches. Data last updated 24 June 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 return flight

LondonToronto

LTN - YYZ

LTNYYZ

London Luton

Wed 16/9

19:50-11:00

1 stop20h 10m

Toronto Pearson Intl

Tue 29/9

19:15-22:50

1 stop22h 35m

£427

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Tue 7/7

13:05-19:10

1 stop11h 05m

Toronto Pearson Intl

Thu 10/9

20:45-20:20

1 stop18h 35m

£427

LondonToronto

STN - YYZ

STNYYZ

London Stansted

Sat 8/8

06:35-10:00

2 stops32h 25m

Toronto Pearson Intl

Mon 17/8

18:15-11:15

2 stops12h 00m

£434

LondonToronto

LTN - YYZ

LTNYYZ

London Luton

Wed 2/9

15:30-11:00

1 stop24h 30m

Toronto Pearson Intl

Sun 13/9

19:15-12:05

1 stop11h 50m

£436

LondonToronto

STN - YYZ

STNYYZ

London Stansted

Thu 23/7

06:30-10:00

2 stops32h 30m

Toronto Pearson Intl

Thu 13/8

11:00-21:20

2 stops29h 20m

£449

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Sat 4/7

07:30-17:17

2 stops14h 47m

Montreal Pierre Elliott Trudeau Intl

Wed 5/8

13:10-05:55

1 stop11h 45m

£451

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Wed 9/9

07:30-17:19

2 stops14h 49m

Montreal Pierre Elliott Trudeau Intl

Thu 24/9

15:25-07:15

1 stop10h 50m

£452

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Thu 3/9

13:00-22:05

1 stop14h 05m

Toronto Pearson Intl

Mon 7/9

20:45-11:45

1 stop10h 00m

£457

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Sat 3/10

06:50-20:09

2 stops18h 19m

Toronto Island

Fri 16/10

15:15-06:55

1 stop10h 40m

£458

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Tue 20/10

07:30-18:07

2 stops15h 37m

Toronto Pearson Intl

Tue 27/10

13:20-06:40

2 stops13h 20m

£465

Flights are sorted by cheapest return flights first.

Deals found on 24/6

Showing 1-10 of 60 resultsSorted by cheapest first
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6

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 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 the United Kingdom to Ontario

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

Currently, February is the cheapest month in which you can book a flight from United Kingdom to Region of Ontario (average of £434). Flying from United Kingdom to Region of Ontario in December is currently the most expensive (average of £619). 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 24 June 2026.

When flying from United Kingdom 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 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 24 June 2026.

The most flights from GB0 to CAON are scheduled on a Monday (48 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (22 on average).

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

Booking 59 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.

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 24 June 2026.
Read reviews from past customers who have flown with 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
558 reviews
Check prices

Entertainment

7.1

Comfort

7.3

Crew

8.5

Overall

7.8

Boarding

8.0

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
558 reviews
Air Transat
7.8
Good
558 reviews
Check prices

Entertainment

7.1

Comfort

7.3

Crew

8.5

Overall

7.8

Boarding

8.0

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.
Virgin Atlantic
7.5
Good
690 reviews
Air Transat
7.8
Good
558 reviews
Check prices

Entertainment

7.1

Comfort

7.3

Crew

8.5

Overall

7.8

Boarding

8.0

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
11,252 reviews
Air Transat
7.8
Good
558 reviews
Check prices

Entertainment

7.1

Comfort

7.3

Crew

8.5

Overall

7.8

Boarding

8.0

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
8,092 reviews
Air Transat
7.8
Good
558 reviews
Check prices

Entertainment

7.1

Comfort

7.3

Crew

8.5

Overall

7.8

Boarding

8.0

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
8,070 reviews
Air Transat
7.8
Good
558 reviews
Check prices

Entertainment

7.1

Comfort

7.3

Crew

8.5

Overall

7.8

Boarding

8.0

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 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?

    There are many flights that can get you from United Kingdom to Region of Ontario in 11h 05m. Fly via Icelandair, United Airlines, or British Airways to get the fastest option. United Kingdom and Region of Ontario are separated by a distance of 3543 mi. This flight may include one or multiple stops.

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

    For one-way options, check prices for WestJet. According to our data, you can fly for as low as £154. Users have also found prices from £185 and £203 on KLM and Air Transat, respectively.

  • 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 holiday 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, February is the cheapest month in which you can book a flight from United Kingdom to Region of Ontario (average of £434). Flying from United Kingdom to Region of Ontario in December is currently the most expensive (average of £619). 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.
Heathrow to Vancouver Intl flights
Heathrow to Pearson Intl flights
Gatwick to Pearson Intl flights
Gatwick to Vancouver Intl flights
Heathrow to Toronto Island flights
Stansted to Pearson Intl flights
London City to Vancouver Intl flights
London City to Pearson Intl flights
Stansted to Vancouver Intl flights
Gatwick to Toronto Island flights
Heathrow to Pierre Elliott Trudeau Intl flights
Heathrow to Calgary flights
Luton to Pearson Intl flights
Manchester to Pearson Intl flights
Gatwick to Pierre Elliott Trudeau Intl flights
Heathrow to Abbotsford flights
Luton to Vancouver Intl flights
Heathrow to Halifax flights
Gatwick to Calgary flights
London City to Calgary flights
Southend to Pearson Intl flights
London City to Pierre Elliott Trudeau Intl flights
Manchester to Vancouver Intl flights
Stansted to Pierre Elliott Trudeau Intl flights
Manchester to Toronto Island flights
Edinburgh to Pearson Intl flights
Heathrow to Ottawa flights
Stansted to Calgary flights
Luton to Pierre Elliott Trudeau Intl flights
Luton to Calgary flights
Cork to Kelowna flights
Edinburgh to Vancouver Intl flights
Gatwick to Ottawa flights
Birmingham to Pearson Intl flights
Edinburgh to Toronto Island flights
Gatwick to Halifax flights
Dublin to Pearson Intl flights
Glasgow Intl to Pearson Intl flights
Heathrow to Winnipeg flights
Stansted to Halifax flights
Birmingham to Vancouver Intl flights
London City to Ottawa flights
Gatwick to Abbotsford flights
London City to Halifax flights
Manchester to Abbotsford flights
Luton to Halifax flights

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 858,174 searches. Data last updated 24 June 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest£276Average£536FlexibilityNo cancel feeOn-time60%
Search WestJet flights
SWISSCheapest£277Average£349FlexibilityNo cancel feeOn-time79%
Search SWISS flights
IcelandairCheapest£278Average£507FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapest£321Average£644FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air FranceCheapest£325Average£670FlexibilityNo cancel feeOn-time77%
Search Air France flights
Air TransatCheapest£328Average£570FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
TAP AIR PORTUGALCheapest£334Average£589FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Virgin AtlanticCheapest£338Average£599FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
DeltaCheapest£340Average£638FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapest£349Average£630FlexibilityNo cancel feeOn-time67%
Search Air Canada 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 United Kingdom to Ontario?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from United Kingdom 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 United Kingdom to Ontario?

Cheapflights helps you find that perfect flight to Ontario from United Kingdom 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 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, Cheapflights offers price alerts on United Kingdom to Ontario flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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