Find flights
Airlines
FAQs

Cheap flights from the United Kingdom to Ontario from £303

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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ONT
4 Nov — 11 Nov1
1 adult

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 October 2024.

Tue 12/1108:20LHR - ONT
1 stop18h 13mFinnair
Fri 29/1110:43ONT - LHR
1 stop13h 32mFinnair
Deal found 29/10£438
Thu 7/1114:30LHR - ONT
1 stop16h 24mKLM
Sun 10/1111:58ONT - LHR
1 stop14h 37mKLM
Deal found 29/10£447
Sat 23/1111:00LGW - ONT
2 stops20h 57mIberia
Sat 30/1110:43ONT - LGW
2 stops24h 07mIberia
Deal found 28/10£448
Tue 31/1210:45LHR - ONT
1 stop19h 52mDelta
Tue 7/113:30ONT - LHR
1 stop12h 30mDelta
Deal found 29/10£452
Thu 31/1012:00LGW - ONT
1 stop26h 08mMultiple Airlines
Sun 3/1112:22ONT - LGW
1 stop14h 13mMultiple Airlines
Deal found 29/10£475
Tue 10/1211:35LHR - ONT
1 stop17h 12mLufthansa
Fri 27/1218:30ONT - LHR
1 stop31h 10mLufthansa
Deal found 29/10£496
Sat 9/1109:50MAN - ONT
2 stops20h 24mFinnair
Sat 16/1110:43ONT - MAN
2 stops17h 02mFinnair
Deal found 28/10£500
Wed 13/1111:10LHR - ONT
2 stops19h 13mMultiple Airlines
Wed 20/1110:35ONT - LHR
2 stops15h 35mMultiple Airlines
Deal found 29/10£504
Sun 3/1119:50MAN - ONT
2 stops31h 15mBritish Airways
Sun 10/1123:59ONT - MAN
2 stops27h 46mBritish Airways
Deal found 27/10£508
Mon 18/1113:15LHR - ONT
1 stop17h 30mVirgin Atlantic
Mon 2/1211:18ONT - LHR
1 stop15h 12mVirgin Atlantic
Deal found 29/10£516
Thu 7/1112:00MAN - ONT
1 stop18h 54mKLM
Mon 11/1106:00ONT - MAN
2 stops26h 30mKLM
Deal found 29/10£518
Sat 9/1105:55MAN - ONT
2 stops18h 21mMultiple Airlines
Wed 13/1107:10ONT - MAN
1 stop16h 25mMultiple Airlines
Deal found 28/10£526

Find flights from United Kingdom to Ontario within your budget

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 1,015,184 searches. Data last updated 30 October 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£365 - £588

Route

Depart

Return

Price

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Mon 11/11

1 stop16h 31m

Ontario

Mon 18/11

1 stop14h 42m

£365

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Tue 26/11

2 stops24h 31m

Ontario

Tue 3/12

1 stop20h 30m

£373

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Mon 27/1

2 stops23h 46m

Ontario

Tue 11/2

1 stop17h 14m

£380

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Mon 27/1

1 stop26h 39m

Ontario

Mon 17/2

1 stop16h 48m

£387

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Mon 20/1

1 stop17h 12m

Ontario

Sun 26/1

1 stop22h 21m

£397

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Tue 12/11

1 stop17h 08m

Ontario

Sat 16/11

1 stop24h 22m

£398

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Sun 24/11

1 stop13h 34m

Ontario

Tue 3/12

1 stop12h 42m

£432

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Wed 11/12

2 stops17h 02m

Ontario

Tue 24/12

1 stop19h 35m

£437

London GatwickOntario

LGW - ONT

LGWONT

London Gatwick

Sat 23/11

2 stops20h 57m

Ontario

Sat 30/11

2 stops24h 07m

£448

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Wed 27/11

2 stops20h 53m

Ontario

Thu 5/12

1 stop17h 20m

£474

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Fri 13/12

2 stops50h 40m

Ontario

Tue 24/12

2 stops32h 48m

£559

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Tue 10/12

1 stop15h 38m

Ontario

Wed 1/1

1 stop17h 25m

£588

Flights are sorted by cheapest first

Deals found on 28/10

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.

Travel insights for flights from United Kingdom to Ontario

Get recent, data-driven insights about flights from United Kingdom to Ontario including ideal travel times, pricing trends, and more.

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

Currently, February is the cheapest month in which you can book a flight from United Kingdom to Ontario (average of £514). Flying from United Kingdom to Ontario in August is currently the most expensive (average of £820). 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 ONT?

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 2024.

When flying from United Kingdom to 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 Ontario ranges from 3.0 - 86.0 inches per month. February is typically the wettest month, when rainfall can reach 86.0 mm. June is typically the driest time to visit Ontario when rainfall is around 3.0 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 Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 26.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 12.0 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 October 2024.
To help decide which airline to fly from United Kingdom to Ontario, see what other customers have to say about Delta, United Airlines and British Airways. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very Good
8,845 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Comfort

7.9

Reviews

1 / 10

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

8.0
Very Good
8,845 reviews
8.0
Very Good
8,845 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Comfort

7.9

Reviews

1 / 10

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

7.8
Good
1,352 reviews
8.0
Very Good
8,845 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Comfort

7.9

Reviews

1 / 10

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

7.7
Good
1,318 reviews
8.0
Very Good
8,845 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Comfort

7.9

Reviews

1 / 10

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

7.6
Good
667 reviews
8.0
Very Good
8,845 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Comfort

7.9

Reviews

1 / 10

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

7.4
Good
1,534 reviews
8.0
Very Good
8,845 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Comfort

7.9

Reviews

1 / 10

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 airport do you fly into for flights to Ontario from United Kingdom?

    Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to Ontario from United Kingdom.

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

    The cheapet airlines for a one-way flight from United Kingdom to Ontario are Iberia (£421), Lufthansa (£447), and Finnair (£473).

  • What are the most popular routes from United Kingdom to Ontario?

  • 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 Ontario?

    Currently, February is the cheapest month in which you can book a flight from United Kingdom to Ontario (average of £514). Flying from United Kingdom to Ontario in August is currently the most expensive (average of £820). 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.

Top 6 airlines flying from United Kingdom to Ontario

Discover the top 6 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 1,015,184 searches. Data last updated 30 October 2024.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£368Average£480FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£381Average£609FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£411Average£505FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest£479Average£521FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£508Average£704FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£582Average£710FlexibilityNo cancel feeOn-time75%
Search KLM 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?

Deals for United Kingdom to Ontario 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 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?

Need flexible booking options for your flight to Ontario from United Kingdom? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Ontario from United Kingdom today and book when prices fit your budget.

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.