Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from the United Kingdom to Ontario from £248

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YYZ
2 Sep — 9 Sep1
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 28 August 2025.

Round-trip from

£353

One-way from

£248

Popular in

December

Cheapest in

February

Average price

£528

Good round-trip deal

£349 or less

Good one-way deal

£275 or less
SWISS
  • SWISS
  • 9/10-16/10
  • 2 total stops
  • 21h 45m total
  • United Kingdom to Ontario
Search Deals
15/9
  • 15/9
  • 2 total stops
  • 21h 47m total
  • United Kingdom to Ontario
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£11 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2025
Search Deals
Price to beat on a round-trip flight from United Kingdom to Ontario.
Search Deals
Price to beat on a one-way flight from United Kingdom to Ontario.
Search Deals

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 28 August 2025.

Thu 9/1009:25LCY - YUL
1 stop10h 35mSWISS
Thu 16/1016:40YUL - LCY
1 stop11h 10mSWISS
Deal found 25/8£353
Tue 11/1113:30LHR - YYZ
1 stop11h 20mLufthansa
Thu 20/1123:00YYZ - LHR
Nonstop7h 20mLufthansa
Deal found 27/8£359
Fri 19/909:40LGW - YYZ
Nonstop8h 05mAir Transat
Sun 21/918:00YYZ - LGW
1 stop10h 50mAir Transat
Deal found 27/8£359
Sat 20/906:50LHR - YTZ
2 stops12h 55mAir Canada
Sat 27/916:10YTZ - LHR
2 stops12h 25mAir Canada
Deal found 27/8£359
Sat 11/1017:40LHR - YYZ
1 stop10h 30mAir Canada
Sat 18/1019:15YYZ - LHR
1 stop9h 20mAir Canada
Deal found 27/8£359
Wed 24/908:15STN - YYZ
1 stop12h 35mMultiple Airlines
Wed 15/1022:10YYZ - STN
1 stop17h 45mMultiple Airlines
Deal found 27/8£359
Fri 7/1111:40LGW - YYZ
Nonstop8h 20mAir Transat
Wed 19/1121:35YYZ - LGW
Nonstop7h 10mAir Transat
Deal found 26/8£359
Wed 3/906:50LHR - YTZ
2 stops12h 55mAir Canada
Tue 9/918:25YTZ - LHR
1 stop10h 10mAir Canada
Deal found 27/8£359
Wed 24/910:00LTN - YYZ
1 stop10h 50mMultiple Airlines
Tue 30/923:55YYZ - LTN
1 stop17h 15mMultiple Airlines
Deal found 26/8£360
Mon 22/920:15LGW - YTZ
2 stops29h 35mMultiple Airlines
Mon 29/914:45YTZ - LGW
2 stops23h 50mMultiple Airlines
Deal found 27/8£360
Wed 3/908:30LHR - YYZ
Nonstop7h 55mAir Canada
Thu 11/906:30YYZ - LHR
1 stop9h 30mAir Canada
Deal found 27/8£360
Thu 25/906:55STN - YYZ
2 stops22h 30mMultiple Airlines
Thu 9/1023:55YYZ - STN
1 stop17h 30mMultiple Airlines
Deal found 26/8£360

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 28 August 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

LondonMontreal

LCY - YUL

LCYYUL

London City

Thu 9/10

09:25-15:00

1 stop10h 35m

Montreal Pierre Elliott Trudeau Intl

Thu 16/10

16:40-08:50

1 stop11h 10m

£353

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Tue 11/11

09:30-16:15

1 stop11h 45m

Toronto Pearson Intl

Sat 22/11

20:25-08:30

Nonstop7h 05m

£359

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Thu 13/11

06:00-13:50

1 stop12h 50m

Toronto Pearson Intl

Tue 18/11

23:10-07:10

1 stop27h 00m

£359

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Tue 7/10

11:35-17:25

1 stop10h 50m

Toronto Pearson Intl

Tue 14/10

22:45-10:45

Nonstop7h 00m

£359

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Sat 20/9

06:50-14:45

2 stops12h 55m

Toronto Island

Sat 27/9

16:10-09:35

2 stops12h 25m

£359

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Tue 11/11

13:30-19:50

1 stop11h 20m

Toronto Pearson Intl

Thu 20/11

23:00-11:20

Nonstop7h 20m

£359

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Mon 10/11

09:30-16:15

1 stop11h 45m

Toronto Pearson Intl

Thu 20/11

17:00-07:10

1 stop9h 10m

£359

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Tue 11/11

06:30-13:05

1 stop11h 35m

Toronto Pearson Intl

Fri 21/11

20:25-08:30

Nonstop7h 05m

£359

LondonToronto

STN - YYZ

STNYYZ

London Stansted

Wed 24/9

08:15-15:50

1 stop12h 35m

Toronto Pearson Intl

Wed 15/10

22:10-20:55

1 stop17h 45m

£359

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Fri 17/10

06:00-12:50

1 stop11h 50m

Toronto Pearson Intl

Sun 26/10

18:55-20:35

1 stop21h 40m

£359

Flights are sorted by cheapest return flights first.

Deals found on 26/8

Showing 1-10 of 60 results
1
2
3
...
6

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 28 August 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 28 August 2025.

The most flights from GB0 to CAON are scheduled on a Tuesday (39 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (29 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 28 August 2025.
Read reviews from past customers who have flown with 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
7.7
Good
428 reviews
Check prices

Entertainment

7.0

Boarding

7.9

Comfort

7.3

Food

6.8

Crew

8.4

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.
Air Transat
7.7
Good
428 reviews
Air Transat
7.7
Good
428 reviews
Check prices

Entertainment

7.0

Boarding

7.9

Comfort

7.3

Food

6.8

Crew

8.4

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.
Virgin Atlantic
7.4
Good
661 reviews
Air Transat
7.7
Good
428 reviews
Check prices

Entertainment

7.0

Boarding

7.9

Comfort

7.3

Food

6.8

Crew

8.4

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.
Air Canada
7.1
Good
10,000 reviews
Air Transat
7.7
Good
428 reviews
Check prices

Entertainment

7.0

Boarding

7.9

Comfort

7.3

Food

6.8

Crew

8.4

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.
Lufthansa
6.8
Okay
7,368 reviews
Air Transat
7.7
Good
428 reviews
Check prices

Entertainment

7.0

Boarding

7.9

Comfort

7.3

Food

6.8

Crew

8.4

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.
British Airways
6.7
Okay
7,313 reviews
Air Transat
7.7
Good
428 reviews
Check prices

Entertainment

7.0

Boarding

7.9

Comfort

7.3

Food

6.8

Crew

8.4

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.

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?

    There are many flights that can get you from United Kingdom to Region of Ontario in 10h 35m. Fly via SWISS, Lufthansa, or Air Transat to get the fastest option. United Kingdom and Region of Ontario are separated by a distance of 3258 mi. This flight may include one or multiple stops.

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

    For one-way options, check prices for TAP AIR PORTUGAL. According to our data, you can fly for as low as £252. Users have also found prices from £255 and £353 on WestJet and Aer Lingus, 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.
Heathrow to Pearson Intl flights
Gatwick to Pearson Intl flights
Heathrow to Vancouver Intl flights
Heathrow to Toronto Island flights
London City to Pearson Intl flights
Gatwick to Toronto Island flights
Heathrow to Calgary flights
Luton to Pearson Intl flights
Heathrow to Pierre Elliott Trudeau Intl flights
Stansted to Pearson Intl flights
Gatwick to Vancouver Intl flights
London City to Vancouver Intl flights
Manchester to Pearson Intl flights
Heathrow to Abbotsford flights
Manchester to Vancouver Intl flights
Gatwick to Calgary flights
London City to Pierre Elliott Trudeau Intl flights
London City to Calgary flights
Gatwick to Pierre Elliott Trudeau Intl flights
Luton to Pierre Elliott Trudeau Intl flights
Southend to Pearson Intl flights
Heathrow to Halifax flights
Manchester to Toronto Island flights
Stansted to Pierre Elliott Trudeau Intl flights
Cork to Kelowna flights
Manchester to Abbotsford flights
Heathrow to Ottawa flights
Heathrow to Edmonton flights
Edinburgh to Pearson Intl flights
Luton to Calgary flights
Glasgow Intl to Pearson Intl flights
Heathrow to Québec City flights
Stansted to Vancouver Intl flights
Gatwick to Edmonton flights
Luton to Vancouver Intl flights
Gatwick to Halifax flights
Manchester to Calgary flights
Birmingham to Pearson Intl flights
Gatwick to Québec City flights
London City to Halifax flights
London City to Edmonton flights
Gatwick to Ottawa flights
Stansted to Calgary flights
London City to Québec City 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 28 August 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£39Average£540FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Aer LingusCheapest£73Average£570FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
PLAYCheapest£257Average£265FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
WestJetCheapest£275Average£463FlexibilityNo cancel feeOn-time60%
Search WestJet flights
IcelandairCheapest£286Average£432FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapest£298Average£528FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Scandinavian AirlinesCheapest£298Average£432FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Air TransatCheapest£300Average£493FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
DeltaCheapest£305Average£557FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
TAP AIR PORTUGALCheapest£306Average£554FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.