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Cheap flights from the United Kingdom to Ontario from C$ 440

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 18/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YYZ
29 Nov — 6 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 30 October 2025.

Round-trip from

C$ 652

One-way from

C$ 440

Popular in

December

Cheapest in

February

Average price

C$ 795

Good round-trip deal

C$ 776 or less

Good one-way deal

C$ 366 or less
Icelandair
  • Icelandair
  • 26/2-1/3
  • 2 total stops
  • 21h 35m total
  • United Kingdom to Ontario
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18/11
  • 18/11
  • 1 total stop
  • 33h 25m total
  • United Kingdom to Ontario
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 53 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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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 30 October 2025.

Thu 27/1111:55 a.m.LGW - YYZ
1 stop11h 20mIcelandair
Thu 4/127:40 p.m.YYZ - LGW
1 stop10h 15mIcelandair
Deal found 29/10C$ 655
Thu 27/1112:15 p.m.LHR - YYZ
1 stop11h 00mIcelandair
Sun 30/117:40 p.m.YYZ - LHR
1 stop10h 10mIcelandair
Deal found 29/10C$ 659
Thu 27/1112:15 p.m.LHR - YYZ
1 stop11h 00mIcelandair
Thu 4/127:40 p.m.YYZ - LHR
1 stop18h 50mIcelandair
Deal found 30/10C$ 662
Thu 27/1111:55 a.m.LGW - YYZ
1 stop11h 20mIcelandair
Wed 3/127:40 p.m.YYZ - LGW
1 stop10h 15mIcelandair
Deal found 29/10C$ 665
Thu 27/1112:15 p.m.LHR - YYZ
1 stop11h 00mIcelandair
Wed 3/127:40 p.m.YYZ - LHR
1 stop18h 50mIcelandair
Deal found 29/10C$ 666
Sat 6/1211:55 a.m.LGW - YYZ
1 stop11h 20mIcelandair
Mon 8/127:40 p.m.YYZ - LGW
1 stop10h 15mIcelandair
Deal found 29/10C$ 666
Wed 26/118:35 p.m.LHR - YYZ
1 stop26h 40mIcelandair
Wed 3/127:40 p.m.YYZ - LHR
1 stop10h 10mIcelandair
Deal found 29/10C$ 667
Thu 4/1212:15 p.m.LHR - YYZ
1 stop11h 00mIcelandair
Mon 8/127:40 p.m.YYZ - LHR
1 stop18h 50mIcelandair
Deal found 29/10C$ 669
Thu 27/1111:55 a.m.LGW - YYZ
1 stop11h 20mIcelandair
Wed 10/127:40 p.m.YYZ - LGW
1 stop10h 15mIcelandair
Deal found 29/10C$ 669
Thu 4/1211:55 a.m.LGW - YYZ
1 stop11h 20mIcelandair
Mon 8/127:40 p.m.YYZ - LGW
1 stop10h 15mIcelandair
Deal found 28/10C$ 670
Thu 27/1112:15 p.m.LHR - YYZ
1 stop11h 00mIcelandair
Wed 10/127:40 p.m.YYZ - LHR
1 stop10h 10mIcelandair
Deal found 29/10C$ 672
Wed 26/118:35 p.m.LHR - YYZ
1 stop26h 40mIcelandair
Sun 30/117:40 p.m.YYZ - LHR
1 stop18h 50mIcelandair
Deal found 29/10C$ 673

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 30 October 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 - YYZ

LGWYYZ

London Gatwick

Sun 8/2

11:55 a.m.-6:15 p.m.

1 stop11h 20m

Toronto Pearson Intl

Sun 15/2

7:40 p.m.-10:55 a.m.

1 stop10h 15m

C$ 693

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Wed 3/12

11:55 a.m.-6:15 p.m.

1 stop11h 20m

Toronto Pearson Intl

Wed 10/12

7:40 p.m.-10:55 a.m.

1 stop10h 15m

C$ 693

LondonMontreal

LGW - YUL

LGWYUL

London Gatwick

Sat 7/2

11:40 a.m.-8:55 p.m.

1 stop14h 15m

Montreal Pierre Elliott Trudeau Intl

Sun 15/2

2:30 p.m.-9:45 a.m.

1 stop14h 15m

C$ 698

LondonMontreal

LGW - YUL

LGWYUL

London Gatwick

Thu 27/11

11:40 a.m.-6:25 p.m.

1 stop11h 45m

Montreal Pierre Elliott Trudeau Intl

Sat 6/12

3:55 p.m.-9:45 a.m.

1 stop12h 50m

C$ 698

LondonMontreal

LGW - YUL

LGWYUL

London Gatwick

Mon 9/2

11:40 a.m.-8:55 p.m.

1 stop14h 15m

Montreal Pierre Elliott Trudeau Intl

Sun 15/2

2:30 p.m.-9:45 a.m.

1 stop14h 15m

C$ 698

LondonMontreal

LGW - YUL

LGWYUL

London Gatwick

Thu 5/2

11:40 a.m.-10:20 p.m.

1 stop15h 40m

Montreal Pierre Elliott Trudeau Intl

Sun 15/2

2:30 p.m.-9:45 a.m.

1 stop14h 15m

C$ 698

LondonMontreal

LGW - YUL

LGWYUL

London Gatwick

Fri 6/2

11:40 a.m.-9:20 a.m.

1 stop26h 40m

Montreal Pierre Elliott Trudeau Intl

Sun 15/2

2:30 p.m.-9:45 a.m.

1 stop14h 15m

C$ 698

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Tue 20/1

8:35 p.m.-6:15 p.m.

1 stop26h 40m

Toronto Pearson Intl

Mon 26/1

7:40 p.m.-10:50 a.m.

1 stop10h 10m

C$ 700

LondonToronto

STN - YYZ

STNYYZ

London Stansted

Wed 3/12

6:30 a.m.-7:45 p.m.

2 stops18h 15m

Toronto Pearson Intl

Mon 8/12

7:45 p.m.-9:20 p.m.

2 stops20h 35m

C$ 709

LondonToronto

STN - YYZ

STNYYZ

London Stansted

Mon 24/11

6:30 a.m.-7:50 p.m.

2 stops18h 20m

Toronto Pearson Intl

Mon 1/12

7:45 p.m.-9:20 p.m.

2 stops20h 35m

C$ 709

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/10

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 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, August is the cheapest month in which you can book a flight from United Kingdom to Region of Ontario (average of C$ 108). Flying from United Kingdom to Region of Ontario in December is currently the most expensive (average of C$ 658). 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 30 October 2025.

It’s optimal to fly from United Kingdom to Region of Ontario in the evening. By choosing this option you can save up to 12% on the cost of your flight, compared to 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 round-trip from United Kingdom to Ontario. Price data was last updated on 16 December 2024.

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

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 30 October 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.
Air Transat
7.8
Good
469 reviews
Check prices

Food

6.8

Comfort

7.4

Entertainment

7.1

Crew

8.5

Overall

7.8

Boarding

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 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
469 reviews
Air Transat
7.8
Good
469 reviews
Check prices

Food

6.8

Comfort

7.4

Entertainment

7.1

Crew

8.5

Overall

7.8

Boarding

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 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
670 reviews
Air Transat
7.8
Good
469 reviews
Check prices

Food

6.8

Comfort

7.4

Entertainment

7.1

Crew

8.5

Overall

7.8

Boarding

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 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
10,380 reviews
Air Transat
7.8
Good
469 reviews
Check prices

Food

6.8

Comfort

7.4

Entertainment

7.1

Crew

8.5

Overall

7.8

Boarding

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 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
7,541 reviews
Air Transat
7.8
Good
469 reviews
Check prices

Food

6.8

Comfort

7.4

Entertainment

7.1

Crew

8.5

Overall

7.8

Boarding

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 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
7,487 reviews
Air Transat
7.8
Good
469 reviews
Check prices

Food

6.8

Comfort

7.4

Entertainment

7.1

Crew

8.5

Overall

7.8

Boarding

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 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?

    Departing from United Kingdom to Region of Ontario will take you 11h 20m. The distance from United Kingdom to Region of Ontario is about 5734 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$ 489 on TAP AIR PORTUGAL. Other airlines that offer cheap prices include British Airways from C$ 499 and Delta from C$ 508 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, August is the cheapest month in which you can book a flight from United Kingdom to Region of Ontario (average of C$ 108). Flying from United Kingdom to Region of Ontario in December is currently the most expensive (average of C$ 658). 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

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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 30 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapestC$ 445AverageC$ 1,162FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
IcelandairCheapestC$ 563AverageC$ 843FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapestC$ 574AverageC$ 932FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air TransatCheapestC$ 595AverageC$ 945FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Virgin AtlanticCheapestC$ 636AverageC$ 895FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapestC$ 648AverageC$ 982FlexibilityNo cancel feeOn-time70%
Search British Airways flights
TAP AIR PORTUGALCheapestC$ 658AverageC$ 997FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Air CanadaCheapestC$ 660AverageC$ 979FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 702AverageC$ 934FlexibilityNo cancel feeOn-time60%
Search WestJet flights
DeltaCheapestC$ 714AverageC$ 783FlexibilityNo cancel feeOn-timeN/A
Search Delta 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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