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Cheap flights from the United Kingdom to Ontario from £225

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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YYZ
31 Mar — 7 Apr1
1 adult

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 26 March 2025.

Round-trip from

£332

One-way from

£225

Popular in

August

Cheapest in

February

Average price

£408

Good round-trip deal

£425 or less

Good one-way deal

£232 or less
Air Canada
  • Air Canada
  • 22/4-13/5
  • 2 total stops
  • 28h 50m total
  • United Kingdom to Ontario
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8/6
  • 8/6
  • 1 total stop
  • 21h 10m total
  • United Kingdom to Ontario
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£49 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
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Average for round-trip flights in March 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

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 26 March 2025.

Tue 22/406:00LHR - YYZ
1 stop15h 20mMultiple Airlines
Tue 13/512:00YYZ - LHR
1 stop13h 30mMultiple Airlines
Deal found 25/3£332
Mon 28/412:40LGW - YYZ
Nonstop8h 20mAir Transat
Mon 5/523:15YYZ - LGW
1 stop29h 35mAir Transat
Deal found 25/3£332
Sat 26/407:40LHR - YYZ
1 stop13h 00mBritish Airways
Thu 1/522:05YYZ - LHR
Nonstop7h 15mBritish Airways
Deal found 26/3£333
Tue 24/608:15STN - YYZ
1 stop10h 55mMultiple Airlines
Fri 11/721:15YYZ - STN
1 stop16h 10mMultiple Airlines
Deal found 26/3£333
Sat 19/408:45LHR - YYZ
1 stop12h 35mAir Canada
Sun 27/423:35YYZ - LHR
Nonstop7h 15mAir Canada
Deal found 26/3£334
Mon 5/515:40LGW - YYZ
1 stop11h 15mIcelandair
Sun 11/520:50YYZ - LGW
1 stop12h 50mIcelandair
Deal found 26/3£335
Fri 9/508:40LHR - YTZ
2 stops16h 10mAir Canada
Fri 16/520:25YTZ - LHR
1 stop29h 05mAir Canada
Deal found 25/3£339
Fri 5/915:20LHR - YYZ
1 stop10h 35mAir France
Fri 26/922:30YYZ - LHR
Nonstop7h 10mAir France
Deal found 26/3£339
Wed 14/511:35LGW - YTZ
1 stop15h 45mAir Transat
Fri 23/521:00YTZ - LGW
1 stop31h 50mAir Transat
Deal found 26/3£340
Tue 24/613:10LTN - YYZ
1 stop30h 00mMultiple Airlines
Tue 15/721:15YYZ - LTN
1 stop20h 10mMultiple Airlines
Deal found 25/3£348
Tue 6/508:45LCY - YYZ
1 stop15h 50mMultiple Airlines
Tue 13/520:15YYZ - LCY
1 stop17h 30mMultiple Airlines
Deal found 25/3£349
Tue 10/619:55LGW - YYZ
1 stop23h 15mMultiple Airlines
Tue 17/622:10YYZ - LGW
1 stop18h 05mMultiple Airlines
Deal found 26/3£350

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 26 March 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

LHR - YYZ

LHRYYZ

London Heathrow

Tue 22/4

06:00-16:20

1 stop15h 20m

Toronto Pearson Intl

Tue 13/5

12:00-06:30

1 stop13h 30m

£332

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Mon 28/4

12:40-16:00

Nonstop8h 20m

Toronto Pearson Intl

Mon 5/5

23:15-09:50

1 stop29h 35m

£332

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Sat 26/4

06:15-15:40

1 stop14h 25m

Toronto Pearson Intl

Tue 29/4

18:05-06:15

Nonstop7h 10m

£333

LondonToronto

STN - YYZ

STNYYZ

London Stansted

Tue 24/6

08:15-14:10

1 stop10h 55m

Toronto Pearson Intl

Fri 11/7

21:15-18:25

1 stop16h 10m

£333

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Sat 19/4

08:45-16:20

1 stop12h 35m

Toronto Pearson Intl

Sun 27/4

23:35-11:50

Nonstop7h 15m

£334

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Mon 5/5

15:40-21:55

1 stop11h 15m

Toronto Pearson Intl

Sun 11/5

20:50-14:40

1 stop12h 50m

£335

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Fri 9/5

08:40-19:50

2 stops16h 10m

Toronto Island

Fri 16/5

20:25-06:30

1 stop29h 05m

£339

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Fri 5/9

15:20-20:55

1 stop10h 35m

Toronto Pearson Intl

Fri 26/9

22:30-10:40

Nonstop7h 10m

£339

LondonToronto

LGW - YTZ

LGWYTZ

London Gatwick

Wed 14/5

11:35-22:20

1 stop15h 45m

Toronto Island

Fri 23/5

21:00-09:50

1 stop31h 50m

£340

LondonToronto

LTN - YYZ

LTNYYZ

London Luton

Tue 24/6

13:10-14:10

1 stop30h 00m

Toronto Pearson Intl

Tue 15/7

21:15-22:25

1 stop20h 10m

£348

Flights are sorted by cheapest return flights first.

Deals found on 26/3

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, January is the cheapest month in which you can book a flight from United Kingdom to Region of Ontario (average of £490). Flying from United Kingdom to Region of Ontario in July is currently the most expensive (average of £708). 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 26 March 2025.

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.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Region of Ontario ranges from 51.0 - 83.0 inches per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

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 26 March 2025.
To help decide which airline to fly from United Kingdom to Ontario, see what other customers have to say about Delta, KLM and Air Transat. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,891 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Food

7.3

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Delta
8.0
Very Good
7,891 reviews
Delta
8.0
Very Good
7,891 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Food

7.3

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
KLM
7.8
Good
1,319 reviews
Delta
8.0
Very Good
7,891 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Food

7.3

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Air Transat
7.8
Good
381 reviews
Delta
8.0
Very Good
7,891 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Food

7.3

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Azores Airlines
7.6
Good
63 reviews
Delta
8.0
Very Good
7,891 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Food

7.3

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Finnair
7.6
Good
1,267 reviews
Delta
8.0
Very Good
7,891 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Food

7.3

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

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.

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

    For one-way options, check prices for WestJet. According to our data, you can fly for as low as £225. Users have also found prices from £230 and £271 on Air Transat and TAP AIR PORTUGAL, 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, January is the cheapest month in which you can book a flight from United Kingdom to Region of Ontario (average of £490). Flying from United Kingdom to Region of Ontario in July is currently the most expensive (average of £708). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 26 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest£163Average£588FlexibilityNo cancel feeOn-time77%
Search Air France flights
PLAYCheapest£268Average£388FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
Aer LingusCheapest£291Average£634FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
LufthansaCheapest£293Average£574FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapest£299Average£488FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
IberiaCheapest£311Average£735FlexibilityNo cancel feeOn-time77%
Search Iberia flights
WestJetCheapest£312Average£472FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air TransatCheapest£323Average£598FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Scandinavian AirlinesCheapest£333Average£481FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£333Average£565FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL 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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