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Cheap flights from Ontario to the United Kingdom from C$ 332

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 27/5. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — LHR
29 May — 5 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to United Kingdom

Enter your travel dates to find the best prices.

Cheapest flights from Ontario to United Kingdom
Explore the most affordable flight options available from Ontario to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 April 2026.

Mon 8/67:05 p.m.
YTZ
-
LGW
1 stop31h 50m
Air Transat
Mon 15/611:35 a.m.
LGW
-
YTZ
1 stop15h 45m
Air Transat
Deal found 24/4C$ 770
Wed 3/64:15 p.m.
YYZ
-
LTN
2 stops18h 10m
Multiple Airlines
Sun 14/64:35 p.m.
LTN
-
YYZ
3 stops27h 25m
Multiple Airlines
Deal found 24/4C$ 770
Mon 25/59:35 p.m.
YYZ
-
LGW
1 stop10h 05m
Multiple Airlines
Sun 14/68:55 a.m.
LGW
-
YYZ
1 stop11h 55m
Multiple Airlines
Deal found 26/4C$ 770
Fri 5/611:05 p.m.
YYZ
-
STN
1 stop10h 10m
Multiple Airlines
Mon 15/68:30 a.m.
STN
-
YYZ
1 stop12h 20m
Multiple Airlines
Deal found 26/4C$ 770
Wed 6/57:55 p.m.
YYZ
-
LTN
2 stops21h 45m
Multiple Airlines
Tue 12/55:40 a.m.
LTN
-
YYZ
2 stops17h 15m
Multiple Airlines
Deal found 26/4C$ 772
Mon 11/57:15 p.m.
YYZ
-
STN
1 stop10h 25m
Multiple Airlines
Wed 20/58:00 p.m.
STN
-
YYZ
2 stops24h 00m
Multiple Airlines
Deal found 26/4C$ 772
Sun 7/69:55 p.m.
YYZ
-
LTN
1 stop19h 25m
Multiple Airlines
Sun 14/69:00 a.m.
LTN
-
YYZ
1 stop11h 50m
Multiple Airlines
Deal found 26/4C$ 773
Wed 3/69:35 p.m.
YYZ
-
LGW
1 stop15h 50m
Multiple Airlines
Tue 9/68:50 a.m.
LGW
-
YYZ
1 stop12h 00m
Multiple Airlines
Deal found 26/4C$ 773
Tue 12/57:15 p.m.
YYZ
-
STN
2 stops20h 40m
Multiple Airlines
Tue 19/510:00 p.m.
STN
-
YYZ
2 stops28h 45m
Multiple Airlines
Deal found 25/4C$ 773
Wed 27/59:35 p.m.
YYZ
-
LTN
1 stop18h 40m
Multiple Airlines
Tue 9/69:40 a.m.
LTN
-
YYZ
1 stop11h 10m
Multiple Airlines
Deal found 26/4C$ 774
Tue 2/68:45 p.m.
YYZ
-
LGW
1 stop12h 55m
Icelandair
Wed 17/63:40 p.m.
LGW
-
YYZ
1 stop11h 25m
Icelandair
Deal found 26/4C$ 774
Sun 10/57:15 p.m.
YYZ
-
STN
1 stop9h 20m
Multiple Airlines
Sat 16/56:35 a.m.
STN
-
YYZ
2 stops20h 10m
Multiple Airlines
Deal found 25/4C$ 774

Find flight deals from Ontario to United Kingdom

Keep the following information in mind while searching for Ontario to United Kingdom flight deals. Data was last updated 29 April 2026.

Round-trip from

C$ 770

One-way from

C$ 332

Popular in

December

Cheapest in

February

Average price

C$ 830

Good round-trip deal

C$ 666 or less

Good one-way deal

C$ 301 or less
Air Transat
  • Air Transat
  • 8/6-15/6
  • 2 total stops
  • 47h 35m total
  • Ontario to United Kingdom
Search Deals
27/5
  • 27/5
  • 2 total stops
  • 22h 50m total
  • Ontario to United Kingdom
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (C$ 35 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 April 2026
Search Deals
Price to beat on a round-trip flight from Ontario to United Kingdom.
Search Deals
Price to beat on a one-way flight from Ontario to United Kingdom.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to United Kingdom 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 29 April 2026.
Use the filters below to find and compare flights from Ontario to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoLondon

YTZ - LGW

YTZLGW

Toronto Island

Tue 19/5

6:55 p.m.-9:50 a.m.

1 stop9h 55m

London Gatwick

Wed 27/5

11:35 a.m.-8:15 p.m.

1 stop13h 40m

C$ 814

TorontoLondon

YYZ - LGW

YYZLGW

Toronto Pearson Intl

Thu 28/5

7:50 p.m.-7:55 a.m.

Nonstop7h 05m

London Gatwick

Sat 20/6

9:40 a.m.-12:45 p.m.

Nonstop8h 05m

C$ 817

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Fri 9/10

8:35 p.m.-7:55 a.m.

1 stop30h 20m

London Gatwick

Sun 18/10

11:35 a.m.-2:15 p.m.

Nonstop7h 40m

C$ 839

TorontoLondon

YYZ - LTN

YYZLTN

Toronto Pearson Intl

Wed 20/5

7:15 p.m.-10:15 p.m.

1 stop22h 00m

London Luton

Mon 1/6

7:25 p.m.-11:00 a.m.

1 stop20h 35m

C$ 851

TorontoLondon

YYZ - LTN

YYZLTN

Toronto Pearson Intl

Tue 26/5

7:15 p.m.-10:50 p.m.

1 stop22h 35m

London Luton

Tue 16/6

7:00 p.m.-11:00 a.m.

1 stop21h 00m

C$ 854

TorontoLondon

YYZ - LTN

YYZLTN

Toronto Pearson Intl

Tue 26/5

7:15 p.m.-10:50 p.m.

1 stop22h 35m

London Luton

Mon 1/6

2:05 p.m.-11:00 a.m.

1 stop25h 55m

C$ 855

TorontoLondon

YTZ - LGW

YTZLGW

Toronto Island

Mon 1/6

8:55 p.m.-9:50 a.m.

1 stop31h 55m

London Gatwick

Tue 23/6

11:35 a.m.-8:15 p.m.

1 stop13h 40m

C$ 856

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Sun 24/5

11:10 p.m.-11:55 a.m.

1 stop31h 45m

London Heathrow

Sun 31/5

9:25 p.m.-10:05 p.m.

1 stop29h 40m

C$ 861

TorontoLondon

YYZ - LTN

YYZLTN

Toronto Pearson Intl

Sun 14/6

7:15 p.m.-10:20 p.m.

1 stop22h 05m

London Luton

Wed 1/7

3:30 p.m.-11:00 a.m.

1 stop24h 30m

C$ 862

TorontoLondon

YTZ - LHR

YTZLHR

Toronto Island

Tue 19/5

8:55 p.m.-8:35 a.m.

1 stop30h 40m

London Heathrow

Wed 27/5

2:10 p.m.-9:32 p.m.

1 stop12h 22m

C$ 881

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/4

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Ontario to United Kingdom

Have a flexible travel schedule? Discover the best time to fly to United Kingdom from Ontario 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 Ontario to the United Kingdom

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

The best time to book flights from Region of Ontario to United Kingdom is 68 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Region of Ontario to United Kingdom (average of C$ 836). Flying from Region of Ontario to United Kingdom in December is currently the most expensive (average of C$ 1,242). 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 ON to GB?

Find hourly flight availability from Ontario to United Kingdom. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 April 2026.

When flying from Region of Ontario to United Kingdom, 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 Region of Ontario to United Kingdom

Explore weekly flight availability from Ontario to United Kingdom. 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 29 April 2026.

The most flights from CAON to GB0 are scheduled on a Tuesday (46 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (25 on average).

Related info for your journey

Find useful and relevant information for your journey from Ontario to United Kingdom. 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 Region of Ontario to United Kingdom?

    There are many flights that can get you from Region of Ontario to United Kingdom in 9h 55m. Fly via Air Transat, Porter Airlines, or Icelandair to get the fastest option. The distance between Region of Ontario and United Kingdom is about 5724 km. Both multi-stop and direct flights can be found to your destination and back.

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

    One-way options have recently been found by users for as low as C$ 60 on WestJet. Other airlines that offer cheap prices include TAP AIR PORTUGAL from C$ 314 and Air Transat from C$ 314 one-way.

  • Can I find deals for flights from Ontario to United Kingdom that include hotel bookings?

    Yes. In addition to deals on Ontario to United Kingdom flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to United Kingdom?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to United Kingdom.

  • Can I find deals for business class flights from Ontario to United Kingdom?

    Yes. Cheapflights offers flight deals from Ontario to United Kingdom 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 Region of Ontario to United Kingdom?

    Currently, January is the cheapest month in which you can book a flight from Region of Ontario to United Kingdom (average of C$ 836). Flying from Region of Ontario to United Kingdom in December is currently the most expensive (average of C$ 1,242). 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 Ontario to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.
Pierre Elliott Trudeau Intl to Charles de Gaulle flights
Pearson Intl to Heathrow flights
Pearson Intl to Gatwick flights
Pearson Intl to Leonardo da Vinci/Fiumicino flights
Pearson Intl to Dublin flights
Pearson Intl to Charles de Gaulle flights
Pearson Intl to Istanbul flights
Pierre Elliott Trudeau Intl to Lisbon flights
Vancouver Intl to Heathrow flights
Pierre Elliott Trudeau Intl to Athens flights
Pierre Elliott Trudeau Intl to Leonardo da Vinci/Fiumicino flights
Pierre Elliott Trudeau Intl to Orly flights
Pearson Intl to Lisbon flights
Pearson Intl to Athens flights
Pearson Intl to Stansted flights
Pearson Intl to London City flights
Vancouver Intl to Charles de Gaulle flights
Vancouver Intl to Gatwick flights
Pearson Intl to Amsterdam flights
Pearson Intl to Barcelona-El Prat flights
Pierre Elliott Trudeau Intl to Istanbul flights
Toronto Island to Heathrow flights
Québec City to Charles de Gaulle flights
Pearson Intl to Luton flights
Pearson Intl to Madrid flights
Pierre Elliott Trudeau Intl to Beauvais-Tille flights
Pierre Elliott Trudeau Intl to Barcelona-El Prat flights
Pearson Intl to Orly flights
Vancouver Intl to Amsterdam flights
Toronto Island to Gatwick flights
Vancouver Intl to Frankfurt flights
Pierre Elliott Trudeau Intl to Malpensa flights
Vancouver Intl to Stansted flights
Pierre Elliott Trudeau Intl to Heathrow flights
Vancouver Intl to London City flights
Calgary to Heathrow flights
Pearson Intl to Edinburgh flights
Pearson Intl to Frederic Chopin flights
Toronto Island to Charles de Gaulle flights
Toronto Island to Leonardo da Vinci/Fiumicino flights
Pearson Intl to Frankfurt flights
Pierre Elliott Trudeau Intl to Bruxelles-National flights
Vancouver Intl to Leonardo da Vinci/Fiumicino flights
Pearson Intl to Vicenza flights
Pierre Elliott Trudeau Intl to Geneva flights
Vancouver Intl to Orly flights
Pearson Intl to Sabiha Gokcen flights
Vancouver Intl to Dublin flights
Pearson Intl to Porto flights
Pierre Elliott Trudeau Intl to Lyon flights

Top 10 airlines flying from Ontario to United Kingdom

Discover the top 10 airlines that operate flights from Ontario to United Kingdom. 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 29 April 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 117AverageC$ 822FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 585AverageC$ 1,115FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
TAP AIR PORTUGALCheapestC$ 593AverageC$ 831FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Porter AirlinesCheapestC$ 595AverageC$ 1,045FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air TransatCheapestC$ 610AverageC$ 1,020FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
IcelandairCheapestC$ 649AverageC$ 844FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapestC$ 679AverageC$ 1,154FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapestC$ 712AverageC$ 1,074FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapestC$ 726AverageC$ 1,311FlexibilityNo cancel feeOn-time75%
Search KLM flights
American AirlinesCheapestC$ 737AverageC$ 1,071FlexibilityNo cancel feeOn-time71%
Search American Airlines 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 Ontario to United Kingdom?

Deals for Ontario to United Kingdom flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Ontario to United Kingdom?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to United Kingdom from Ontario.

Can Cheapflights find flights from Ontario to United Kingdom with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Ontario to United Kingdom, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Ontario to United Kingdom become cheaper?

Yes, Cheapflights offers price alerts on Ontario to United Kingdom 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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