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Cheap flights from the United Kingdom to Ontario from £181

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 30/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YYZ
24 Apr — 1 May1
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 25 March 2026.

Thu 30/413:00
LGW
-
YYZ
1 stop14h 05m
Icelandair
Mon 4/523:10
YYZ
-
LGW
1 stop10h 30m
Icelandair
Deal found 21/3£352
Fri 24/421:25
LHR
-
YYZ
1 stop29h 40m
Icelandair
Sun 3/520:45
YYZ
-
LHR
1 stop10h 10m
Icelandair
Deal found 22/3£355
Fri 17/415:40
LGW
-
YYZ
1 stop11h 25m
Icelandair
Mon 20/423:10
YYZ
-
LGW
1 stop10h 30m
Icelandair
Deal found 21/3£355
Fri 10/415:40
LGW
-
YYZ
1 stop11h 25m
Icelandair
Tue 14/420:45
YYZ
-
LGW
1 stop12h 55m
Icelandair
Deal found 20/3£356
Sun 12/415:40
LGW
-
YYZ
1 stop32h 30m
Icelandair
Sun 19/420:45
YYZ
-
LGW
1 stop12h 55m
Icelandair
Deal found 21/3£357
Thu 16/415:40
LGW
-
YYZ
1 stop11h 25m
Icelandair
Thu 30/423:10
YYZ
-
LGW
1 stop10h 30m
Icelandair
Deal found 20/3£357
Wed 22/415:40
LGW
-
YYZ
1 stop11h 25m
Icelandair
Wed 6/523:10
YYZ
-
LGW
1 stop10h 30m
Icelandair
Deal found 20/3£358
Sat 18/413:05
LHR
-
YYZ
1 stop14h 00m
Icelandair
Mon 27/420:45
YYZ
-
LHR
1 stop10h 10m
Icelandair
Deal found 22/3£359
Mon 13/421:25
LHR
-
YYZ
1 stop26h 45m
Icelandair
Wed 13/520:45
YYZ
-
LHR
1 stop18h 35m
Icelandair
Deal found 22/3£360
Fri 17/415:40
LGW
-
YYZ
1 stop32h 30m
Icelandair
Fri 8/523:10
YYZ
-
LGW
1 stop31h 35m
Icelandair
Deal found 22/3£360
Thu 9/413:05
LHR
-
YYZ
1 stop14h 00m
Icelandair
Fri 17/420:45
YYZ
-
LHR
1 stop10h 10m
Icelandair
Deal found 20/3£360
Thu 9/415:40
LGW
-
YYZ
1 stop11h 25m
Icelandair
Sat 18/423:10
YYZ
-
LGW
1 stop10h 30m
Icelandair
Deal found 20/3£360

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 25 March 2026.

Round-trip from

£352

One-way from

£181

Popular in

December

Cheapest in

September

Average price

£438

Good round-trip deal

£382 or less

Good one-way deal

£293 or less
Icelandair
  • Icelandair
  • 30/4-4/5
  • 2 total stops
  • 24h 35m total
  • United Kingdom to Ontario
Search Deals
30/4
  • 30/4
  • 2 total stops
  • 16h 15m total
  • United Kingdom to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£17 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 25 March 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

LGW - YYZ

LGWYYZ

London Gatwick

Tue 14/4

15:40-19:10

1 stop32h 30m

Toronto Pearson Intl

Mon 20/4

23:10-14:40

1 stop10h 30m

£370

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Sun 12/4

15:40-19:10

1 stop32h 30m

Toronto Pearson Intl

Fri 17/4

20:45-14:40

1 stop12h 55m

£440

LondonToronto

LTN - YYZ

LTNYYZ

London Luton

Sat 9/5

18:45-15:15

1 stop25h 30m

Toronto Pearson Intl

Sat 16/5

21:05-22:55

1 stop20h 50m

£447

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Fri 10/4

21:25-22:05

1 stop29h 40m

Toronto Pearson Intl

Mon 20/4

23:10-20:20

1 stop16h 10m

£450

LondonToronto

LGW - YTZ

LGWYTZ

London Gatwick

Wed 9/9

11:35-22:20

1 stop15h 45m

Toronto Island

Tue 22/9

10:00-07:55

1 stop16h 55m

£458

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Wed 2/9

09:40-12:45

Nonstop8h 05m

Toronto Pearson Intl

Sat 12/9

23:15-09:50

1 stop29h 35m

£465

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Sun 3/5

21:25-19:10

1 stop26h 45m

Toronto Pearson Intl

Sun 17/5

20:45-11:55

1 stop10h 10m

£466

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Thu 10/9

11:35-19:25

1 stop12h 50m

Toronto Pearson Intl

Sun 27/9

15:40-09:50

1 stop13h 10m

£467

LondonToronto

LTN - YYZ

LTNYYZ

London Luton

Tue 5/5

06:00-17:10

1 stop16h 10m

Toronto Pearson Intl

Tue 12/5

19:15-22:50

1 stop22h 35m

£477

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Fri 5/6

16:40-23:54

1 stop12h 14m

Toronto Pearson Intl

Sat 6/6

20:10-21:35

2 stops20h 25m

£478

Flights are sorted by cheapest return flights first.

Deals found on 24/3

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
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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, August is the cheapest month in which you can book a flight from United Kingdom to Region of Ontario (average of £59). Flying from United Kingdom to Region of Ontario in December is currently the most expensive (average of £367). 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 25 March 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.

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 25 March 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
7.7
Good
524 reviews
Check prices

Overall

7.7

Entertainment

7.0

Food

6.8

Comfort

7.3

Crew

8.5

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
7.7
Good
524 reviews
Air Transat
7.7
Good
524 reviews
Check prices

Overall

7.7

Entertainment

7.0

Food

6.8

Comfort

7.3

Crew

8.5

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
7.5
Good
685 reviews
Air Transat
7.7
Good
524 reviews
Check prices

Overall

7.7

Entertainment

7.0

Food

6.8

Comfort

7.3

Crew

8.5

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
10,840 reviews
Air Transat
7.7
Good
524 reviews
Check prices

Overall

7.7

Entertainment

7.0

Food

6.8

Comfort

7.3

Crew

8.5

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
7,869 reviews
Air Transat
7.7
Good
524 reviews
Check prices

Overall

7.7

Entertainment

7.0

Food

6.8

Comfort

7.3

Crew

8.5

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
7,820 reviews
Air Transat
7.7
Good
524 reviews
Check prices

Overall

7.7

Entertainment

7.0

Food

6.8

Comfort

7.3

Crew

8.5

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?

    There are many flights that can get you from United Kingdom to Region of Ontario in 12h 14m. Fly via Icelandair, Air Transat, or United Airlines 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 Icelandair. According to our data, you can fly for as low as £138. Users have also found prices from £157 and £191 on WestJet and KLM, 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, August is the cheapest month in which you can book a flight from United Kingdom to Region of Ontario (average of £59). Flying from United Kingdom to Region of Ontario in December is currently the most expensive (average of £367). 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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Heathrow to Pearson Intl flights
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Gatwick to Calgary flights
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Stansted to Calgary flights
Glasgow Intl to Pearson Intl flights
Luton to Vancouver Intl flights
Southend to Pearson Intl flights
Luton to Calgary flights
Luton to Pierre Elliott Trudeau Intl flights
Heathrow to Ottawa flights
Manchester to Toronto Island flights
Edinburgh to Vancouver Intl flights
Cork to Kelowna flights
Edinburgh to Toronto Island flights
Gatwick to Halifax flights
Manchester to Calgary flights
Newcastle upon Tyne to Vancouver Intl flights
Gatwick to Ottawa flights
Heathrow to Edmonton flights
Manchester to Pierre Elliott Trudeau Intl flights
Heathrow to Winnipeg flights
Birmingham to Pearson Intl flights
Stansted to Halifax flights
Edinburgh to Calgary flights
London City 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 25 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£40Average£591FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
RyanairCheapest£57Average£67FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
WestJetCheapest£272Average£466FlexibilityNo cancel feeOn-time60%
Search WestJet flights
SWISSCheapest£272Average£458FlexibilityNo cancel feeOn-time79%
Search SWISS flights
IcelandairCheapest£273Average£493FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air TransatCheapest£309Average£513FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
TAP AIR PORTUGALCheapest£311Average£555FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
DeltaCheapest£320Average£574FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Aer LingusCheapest£324Average£605FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
LufthansaCheapest£327Average£605FlexibilityNo cancel feeOn-time76%
Search Lufthansa 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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