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Cheap flights from the United Kingdom to Ontario from £246

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 25/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YYZ
14 Dec — 21 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap 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 14 November 2025.

Round-trip from

£369

One-way from

£246

Popular in

December

Cheapest in

February

Average price

£416

Good round-trip deal

£450 or less

Good one-way deal

£341 or less
Air Canada
  • Air Canada
  • 27/11-4/12
  • 2 total stops
  • 32h 45m total
  • United Kingdom to Ontario
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25/3
  • 25/3
  • 2 total stops
  • 38h 38m total
  • United Kingdom to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£20 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from United Kingdom to Ontario.
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Price to beat on a one-way flight from United Kingdom to Ontario.
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Find 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 14 November 2025.

Thu 27/1109:00LHR - YYZ
1 stop12h 10mAir Canada
Thu 4/1219:00YYZ - LHR
1 stop20h 35mAir Canada
Deal found 12/11£369
Wed 26/1111:55LGW - YYZ
1 stop11h 20mIcelandair
Wed 3/1219:40YYZ - LGW
1 stop10h 15mIcelandair
Deal found 12/11£372
Tue 2/1220:35LHR - YYZ
1 stop26h 40mIcelandair
Mon 12/119:40YYZ - LHR
1 stop10h 10mIcelandair
Deal found 12/11£373
Wed 26/1109:00LHR - YYZ
1 stop12h 10mMultiple Airlines
Fri 5/1218:10YYZ - LHR
Nonstop7h 20mMultiple Airlines
Deal found 12/11£374
Tue 25/1112:15LHR - YYZ
1 stop11h 00mIcelandair
Mon 1/1219:40YYZ - LHR
1 stop18h 50mIcelandair
Deal found 13/11£375
Wed 3/1211:55LGW - YYZ
1 stop11h 20mIcelandair
Wed 10/1219:40YYZ - LGW
1 stop10h 15mIcelandair
Deal found 12/11£375
Fri 5/1213:45LHR - YTZ
2 stops33h 10mAir Canada
Wed 10/1208:50YTZ - LHR
2 stops17h 20mAir Canada
Deal found 12/11£375
Sat 6/1212:15LHR - YYZ
1 stop11h 00mIcelandair
Thu 11/1219:40YYZ - LHR
1 stop10h 10mIcelandair
Deal found 12/11£375
Mon 24/1120:35LHR - YYZ
1 stop26h 40mIcelandair
Mon 1/1219:40YYZ - LHR
1 stop10h 10mIcelandair
Deal found 12/11£376
Thu 27/1106:35LHR - YYZ
2 stops14h 40mLufthansa
Thu 4/1222:00YYZ - LHR
1 stop30h 20mLufthansa
Deal found 13/11£377
Thu 27/1112:05LHR - YTZ
2 stops34h 50mAir Canada
Thu 4/1210:30YTZ - LHR
1 stop15h 40mAir Canada
Deal found 12/11£377
Wed 3/1212:15LHR - YYZ
1 stop11h 00mIcelandair
Tue 9/1219:40YYZ - LHR
1 stop10h 10mIcelandair
Deal found 12/11£378

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 14 November 2025.
Use the filters below to find and compare flights from the United Kingdom to Ontario that are best for you.

Fly from

United Kingdom

Fly to

Ontario

Route

Depart

Return

Price

LondonToronto

STN - YYZ

STNYYZ

London Stansted

Wed 3/12

06:30-18:15

2 stops16h 45m

Toronto Pearson Intl

Wed 10/12

19:40-22:50

2 stops22h 10m

£389

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Tue 3/3

19:25-17:55

2 stops27h 30m

Toronto Island

Sun 8/3

12:30-07:10

2 stops14h 40m

£391

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Fri 27/2

19:25-19:55

2 stops29h 30m

Toronto Island

Mon 2/3

12:30-08:05

2 stops14h 35m

£393

LondonToronto

STN - YYZ

STNYYZ

London Stansted

Thu 26/2

06:30-18:15

2 stops16h 45m

Toronto Pearson Intl

Thu 5/3

19:40-20:05

2 stops19h 25m

£394

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Wed 3/12

11:55-18:15

1 stop11h 20m

Toronto Pearson Intl

Mon 23/2

19:40-10:55

1 stop10h 15m

£397

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Thu 4/12

11:55-18:15

1 stop11h 20m

Toronto Pearson Intl

Mon 23/2

19:40-10:55

1 stop10h 15m

£397

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Wed 3/12

11:55-18:15

1 stop11h 20m

Toronto Pearson Intl

Wed 18/2

19:40-10:55

1 stop10h 15m

£397

LondonToronto

STN - YYZ

STNYYZ

London Stansted

Thu 29/1

06:30-18:15

2 stops16h 45m

Toronto Pearson Intl

Tue 3/2

19:40-14:20

2 stops13h 40m

£397

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Tue 2/12

20:35-18:15

1 stop26h 40m

Toronto Pearson Intl

Wed 18/2

19:40-19:30

1 stop18h 50m

£400

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Tue 10/3

19:50-16:40

2 stops24h 50m

Toronto Pearson Intl

Tue 24/3

18:10-14:35

2 stops16h 25m

£407

Flights are sorted by cheapest return flights first.

Deals found on 11/11

Showing 1-10 of 60 results
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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 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 £383). 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 14 November 2025.

When flying from United Kingdom to Region of Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 13% versus a flight in the morning.

What is the cheapest day to fly from United Kingdom to Region of Ontario?

Use this chart to determine the cheapest time to fly return from United Kingdom to Ontario. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their United Kingdom to Region of Ontario flight should consider departing on Monday afternoons when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 14 November 2025.

The most flights from GB0 to CAON are scheduled on a Thursday (30 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (20 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 14 November 2025.
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
472 reviews
Check prices

Crew

8.5

Comfort

7.4

Entertainment

7.1

Food

6.8

Overall

7.8

Boarding

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.
Air Transat
7.8
Good
472 reviews
Air Transat
7.8
Good
472 reviews
Check prices

Crew

8.5

Comfort

7.4

Entertainment

7.1

Food

6.8

Overall

7.8

Boarding

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.
Virgin Atlantic
7.5
Good
673 reviews
Air Transat
7.8
Good
472 reviews
Check prices

Crew

8.5

Comfort

7.4

Entertainment

7.1

Food

6.8

Overall

7.8

Boarding

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.
Air Canada
7.1
Good
10,448 reviews
Air Transat
7.8
Good
472 reviews
Check prices

Crew

8.5

Comfort

7.4

Entertainment

7.1

Food

6.8

Overall

7.8

Boarding

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.
Lufthansa
6.8
Okay
7,572 reviews
Air Transat
7.8
Good
472 reviews
Check prices

Crew

8.5

Comfort

7.4

Entertainment

7.1

Food

6.8

Overall

7.8

Boarding

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.
British Airways
6.7
Okay
7,520 reviews
Air Transat
7.8
Good
472 reviews
Check prices

Crew

8.5

Comfort

7.4

Entertainment

7.1

Food

6.8

Overall

7.8

Boarding

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.

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 20m. Fly via Air Canada, Icelandair, or Scandinavian Airlines to get the fastest option. United Kingdom and Region of Ontario are separated by a distance of 3563 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 British Airways. According to our data, you can fly for as low as £273. Users have also found prices from £275 and £280 on Delta and Virgin Atlantic, 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 £383). 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 858,174 searches. Data last updated 14 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£40Average£562FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
RyanairCheapest£58Average£68FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
PLAYCheapest£264Average£271FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
WestJetCheapest£282Average£473FlexibilityNo cancel feeOn-time60%
Search WestJet flights
IcelandairCheapest£294Average£439FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapest£305Average£521FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Scandinavian AirlinesCheapest£305Average£446FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Air TransatCheapest£308Average£507FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
DeltaCheapest£312Average£569FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Aer LingusCheapest£320Average£625FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus 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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