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Cheap flights from the United Kingdom to Ontario from £223

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 29/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YYZ
5 May — 12 May1
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 30 April 2025.

Round-trip from

£329

One-way from

£223

Popular in

August

Cheapest in

February

Average price

£407

Good round-trip deal

£343 or less

Good one-way deal

£246 or less
Lufthansa
  • Lufthansa
  • 20/6-1/7
  • 2 total stops
  • 24h 20m total
  • United Kingdom to Ontario
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29/5
  • 29/5
  • 2 total stops
  • 23h 05m total
  • United Kingdom to Ontario
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£45 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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

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 April 2025.

Fri 20/606:30LHR - YYZ
1 stop14h 50mLufthansa
Tue 1/716:00YYZ - LHR
1 stop9h 30mLufthansa
Deal found 30/4£329
Sun 1/611:35LGW - YYZ
1 stop12h 50mAir Transat
Sun 8/623:15YYZ - LGW
1 stop29h 35mAir Transat
Deal found 29/4£329
Fri 13/606:00LHR - YTZ
2 stops18h 50mAir Canada
Fri 20/618:25YTZ - LHR
2 stops21h 35mAir Canada
Deal found 29/4£329
Wed 4/608:40LHR - YYZ
1 stop12h 45mMultiple Airlines
Thu 4/914:00YYZ - LHR
1 stop11h 30mMultiple Airlines
Deal found 30/4£330
Wed 4/619:30LHR - YYZ
1 stop23h 20mAir Canada
Sat 7/600:30YYZ - LHR
1 stop28h 30mAir Canada
Deal found 29/4£330
Wed 21/511:35LGW - YTZ
1 stop15h 45mAir Transat
Sun 25/521:00YTZ - LGW
1 stop31h 50mAir Transat
Deal found 29/4£332
Thu 19/608:45LCY - YYZ
1 stop12h 35mMultiple Airlines
Wed 23/716:30YYZ - LCY
1 stop10h 40mMultiple Airlines
Deal found 29/4£333
Wed 10/918:35STN - YYZ
1 stop24h 35mMultiple Airlines
Wed 24/922:15YYZ - STN
1 stop16h 45mMultiple Airlines
Deal found 29/4£337
Thu 18/915:40LGW - YYZ
1 stop11h 15mIcelandair
Mon 22/923:00YYZ - LGW
1 stop10h 35mIcelandair
Deal found 29/4£339
Tue 6/508:45LHR - YTZ
2 stops14h 05mMultiple Airlines
Sun 11/519:20YTZ - LHR
1 stop30h 10mMultiple Airlines
Deal found 29/4£341
Thu 12/608:45LCY - YYZ
1 stop16h 00mLufthansa
Sun 15/621:10YYZ - LCY
1 stop16h 25mLufthansa
Deal found 29/4£347
Mon 15/921:55LTN - YYZ
1 stop21h 15mMultiple Airlines
Sun 28/922:10YYZ - LTN
1 stop18h 20mMultiple Airlines
Deal found 30/4£352

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 30 April 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

Fri 20/6

07:30-16:20

1 stop13h 50m

Toronto Pearson Intl

Sun 29/6

19:15-10:00

1 stop9h 45m

£329

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Sun 1/6

11:35-19:25

1 stop12h 50m

Toronto Pearson Intl

Sun 8/6

23:15-09:50

1 stop29h 35m

£329

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Fri 13/6

06:00-19:50

2 stops18h 50m

Toronto Island

Fri 20/6

18:25-21:00

2 stops21h 35m

£329

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Wed 4/6

19:30-13:50

1 stop23h 20m

Toronto Pearson Intl

Sat 7/6

00:30-10:00

1 stop28h 30m

£330

LondonToronto

LGW - YTZ

LGWYTZ

London Gatwick

Wed 21/5

11:35-22:20

1 stop15h 45m

Toronto Island

Sun 25/5

21:00-09:50

1 stop31h 50m

£332

LondonToronto

LCY - YYZ

LCYYYZ

London City

Thu 19/6

08:45-16:20

1 stop12h 35m

Toronto Pearson Intl

Wed 23/7

16:30-08:10

1 stop10h 40m

£333

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Wed 11/6

08:30-16:20

1 stop12h 50m

Toronto Pearson Intl

Sat 21/6

23:00-21:00

1 stop17h 00m

£336

LondonToronto

STN - YYZ

STNYYZ

London Stansted

Wed 10/9

18:35-14:10

1 stop24h 35m

Toronto Pearson Intl

Wed 24/9

22:15-20:00

1 stop16h 45m

£337

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Thu 18/9

15:40-21:55

1 stop11h 15m

Toronto Pearson Intl

Mon 22/9

23:00-14:35

1 stop10h 35m

£339

LondonToronto

LCY - YYZ

LCYYYZ

London City

Thu 12/6

08:45-19:45

1 stop16h 00m

Toronto Pearson Intl

Sun 15/6

21:10-18:35

1 stop16h 25m

£347

Flights are sorted by cheapest return flights first.

Deals found on 29/4

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 30 April 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.

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 30 April 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 (20 on average).

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 30 April 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
7,934 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

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
7,934 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

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
1,334 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

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
385 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

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
66 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

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
1,275 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

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 £223. Users have also found prices from £254 and £265 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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Stansted to Calgary flights

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 30 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£8Average£623FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Air CanadaCheapest£40Average£544FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air FranceCheapest£184Average£570FlexibilityNo cancel feeOn-time77%
Search Air France flights
PLAYCheapest£259Average£380FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
LufthansaCheapest£283Average£533FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapest£286Average£440FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
WestJetCheapest£296Average£475FlexibilityNo cancel feeOn-time60%
Search WestJet flights
IberiaCheapest£300Average£709FlexibilityNo cancel feeOn-time77%
Search Iberia flights
DeltaCheapest£307Average£563FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air TransatCheapest£310Average£509FlexibilityNo cancel feeOn-time50%
Search Air Transat 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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