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Cheap flights from the United Kingdom to Ontario from C$ 415
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 14/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YYZ
14 Oct — 21 Oct1
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 September 2025.
Find flight deals from United Kingdom to Ontario
Cheapest flights from United Kingdom to OntarioExplore 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 September 2025.
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 September 2025.
Sat 6/127:40 a.m.LHR - YYZ
1 stop12h 10mLufthansa
Tue 6/111:00 p.m.YYZ - LHR
Nonstop7h 20mLufthansa
Deal found 14/9C$ 649
Fri 10/1011:35 a.m.LGW - YTZ
1 stop14h 15mAir Transat
Mon 13/106:55 p.m.YTZ - LGW
1 stop9h 55mAir Transat
Deal found 13/9C$ 649
Sat 20/911:35 a.m.LGW - YYZ
1 stop15h 06mAir Transat
Sun 28/910:45 p.m.YYZ - LGW
Nonstop7h 00mAir Transat
Deal found 14/9C$ 649
Wed 8/107:30 p.m.LHR - YTZ
2 stops27h 15mAir Canada
Mon 13/108:50 a.m.YTZ - LHR
1 stop16h 40mAir Canada
Deal found 14/9C$ 649
Wed 22/108:40 a.m.LHR - YYZ
1 stop12h 45mAir Canada
Tue 28/1011:55 p.m.YYZ - LHR
Nonstop7h 25mAir Canada
Deal found 13/9C$ 651
Mon 22/911:35 a.m.LGW - YTZ
1 stop11h 35mAir Transat
Sun 28/99:00 p.m.YTZ - LGW
1 stop31h 50mAir Transat
Deal found 13/9C$ 651
Thu 9/1011:35 a.m.LGW - YYZ
1 stop15h 06mAir Transat
Fri 24/1010:45 p.m.YYZ - LGW
Nonstop7h 00mAir Transat
Deal found 12/9C$ 651
Thu 30/106:50 a.m.LHR - YTZ
2 stops15h 05mAir Canada
Fri 7/116:45 p.m.YTZ - LHR
2 stops44h 50mAir Canada
Deal found 13/9C$ 651
Thu 4/129:30 a.m.LHR - YYZ
1 stop11h 45mLufthansa
Tue 6/15:00 p.m.YYZ - LHR
1 stop9h 10mLufthansa
Deal found 14/9C$ 652
Thu 20/116:40 p.m.LGW - YYZ
1 stop26h 30mSWISS
Wed 3/128:25 p.m.YYZ - LGW
1 stop16h 25mSWISS
Deal found 12/9C$ 652
Thu 25/93:50 p.m.LHR - YYZ
Nonstop7h 55mAir Canada
Sun 28/911:35 p.m.YYZ - LHR
Nonstop7h 15mAir Canada
Deal found 13/9C$ 653
Fri 10/1011:35 a.m.LGW - YTZ
1 stop15h 45mAir Transat
Thu 16/102:45 p.m.YTZ - LGW
1 stop14h 05mAir Transat
Deal found 13/9C$ 653
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 14 September 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
LGW - YTZ
LGWYTZ
London Gatwick
Fri 10/10
11:35 a.m.-10:20 p.m.
1 stop15h 45m
Toronto Island
Thu 16/10
2:45 p.m.-9:50 a.m.
1 stop14h 05m
C$ 653
LondonToronto
LHR - YTZ
LHRYTZ
London Heathrow
Thu 13/11
6:50 a.m.-2:55 p.m.
2 stops13h 05m
Toronto Island
Sun 16/11
12:30 p.m.-7:10 a.m.
1 stop13h 40m
C$ 655
LondonToronto
LHR - YTZ
LHRYTZ
London Heathrow
Wed 15/10
6:50 a.m.-4:45 p.m.
2 stops14h 55m
Toronto Island
Thu 23/10
10:20 a.m.-9:35 a.m.
2 stops18h 15m
C$ 657
LondonToronto
LHR - YTZ
LHRYTZ
London Heathrow
Mon 6/10
7:30 p.m.-5:45 p.m.
2 stops27h 15m
Toronto Island
Tue 14/10
8:25 p.m.-8:35 a.m.
2 stops31h 10m
C$ 659
LondonToronto
LHR - YTZ
LHRYTZ
London Heathrow
Sun 14/12
7:25 p.m.-5:55 p.m.
2 stops27h 30m
Toronto Island
Mon 5/1
12:30 p.m.-8:35 p.m.
2 stops27h 05m
C$ 660
LondonToronto
LGW - YYZ
LGWYYZ
London Gatwick
Thu 6/11
11:40 a.m.-3:00 p.m.
Nonstop8h 20m
Toronto Pearson Intl
Mon 15/12
9:35 p.m.-9:45 a.m.
Nonstop7h 10m
C$ 663
LondonToronto
LGW - YYZ
LGWYYZ
London Gatwick
Fri 7/11
11:40 a.m.-3:00 p.m.
Nonstop8h 20m
Toronto Pearson Intl
Sun 14/12
9:35 p.m.-9:45 a.m.
Nonstop7h 10m
C$ 663
LondonToronto
LGW - YYZ
LGWYYZ
London Gatwick
Fri 10/10
12:40 p.m.-3:40 p.m.
Nonstop8h 00m
Toronto Pearson Intl
Thu 16/10
7:40 a.m.-9:50 a.m.
1 stop21h 10m
C$ 663
LondonMontreal
LHR - YUL
LHRYUL
London Heathrow
Mon 24/11
11:10 a.m.-6:20 p.m.
1 stop12h 10m
Montreal Pierre Elliott Trudeau Intl
Mon 1/12
3:10 p.m.-8:30 a.m.
1 stop12h 20m
C$ 674
LondonMontreal
LHR - YUL
LHRYUL
London Heathrow
Sat 7/2
7:40 a.m.-6:20 p.m.
1 stop15h 40m
Montreal Pierre Elliott Trudeau Intl
Tue 10/2
3:10 p.m.-6:30 a.m.
1 stop10h 20m
C$ 677
Showing 1-10 of 60 results
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
What is the cheapest month to book a flight from United Kingdom to Region of Ontario?
Currently, January is the cheapest month in which you can book a flight from United Kingdom to Region of Ontario (average of C$ 168). Flying from United Kingdom to Region of Ontario in July is currently the most expensive (average of C$ 258). 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 September 2025.
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 14 September 2025.
The most flights from GB0 to CAON are scheduled on a Tuesday (39 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (31 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 September 2025.
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.
Crew
8.4
Overall
7.7
Entertainment
7.0
Food
6.7
Comfort
7.3
Boarding
7.9
Reviews
1 / 20
10.0
ExcellentLiam,Jun 2025
GLA - YYZ
Crew
8.4
Overall
7.7
Entertainment
7.0
Food
6.7
Comfort
7.3
Boarding
7.9
Reviews
1 / 20
10.0
ExcellentLiam,Jun 2025
GLA - YYZ
Crew
8.4
Overall
7.7
Entertainment
7.0
Food
6.7
Comfort
7.3
Boarding
7.9
Reviews
1 / 20
10.0
ExcellentLiam,Jun 2025
GLA - YYZ
Crew
8.4
Overall
7.7
Entertainment
7.0
Food
6.7
Comfort
7.3
Boarding
7.9
Reviews
1 / 20
10.0
ExcellentLiam,Jun 2025
GLA - YYZ
Crew
8.4
Overall
7.7
Entertainment
7.0
Food
6.7
Comfort
7.3
Boarding
7.9
Reviews
1 / 20
10.0
ExcellentLiam,Jun 2025
GLA - YYZ
Crew
8.4
Overall
7.7
Entertainment
7.0
Food
6.7
Comfort
7.3
Boarding
7.9
Reviews
1 / 20
10.0
ExcellentLiam,Jun 2025
GLA - YYZ
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.
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.
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 14 September 2025.
Fly with Cheapflights
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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.