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£289+ Cheap flights to Ontario

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 20/2. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
24 Dec — 31 Dec1
1 adult

Flights to Ontario in 2024

Find the latest flights to Ontario in 2024, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 19 December 2024.

Return from

£424

One-way from

£289

Popular in

August

Cheapest in

February

Average price

£612
Austrian Airlines
  • Austrian Airlines
  • 9/1-22/1
  • 3 total stops
  • 77h 25m total
  • London to Los Angeles
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20/2
  • 20/2
  • 1 total stop
  • 16h 35m total
  • London to Ontario
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High demand for flights, 9% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for return flights in December 2024
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Find flight deals to Ontario

Cheapest flights to Ontario
Explore the most affordable flight options available to Ontario. Find the lowest fares based on data from user searches, with prices last updated on 19 December 2024.

Sat 28/1210:45LHR - ONT
1 stop21h 43mVirgin Atlantic
Sat 11/106:00ONT - LHR
1 stop20h 00mVirgin Atlantic
Deal found 18/12£516
Fri 27/1209:25LHR - ONT
1 stop17h 08mBritish Airways
Fri 17/110:56ONT - LHR
1 stop13h 19mBritish Airways
Deal found 18/12£566
Mon 30/1206:30LHR - ONT
2 stops25h 27mMultiple Airlines
Thu 20/206:59ONT - LHR
1 stop15h 21mMultiple Airlines
Deal found 18/12£584
Sat 28/1210:05LHR - ONT
1 stop20h 55mAustrian Airlines
Fri 28/206:00ONT - LHR
1 stop17h 25mAustrian Airlines
Deal found 18/12£590
Mon 30/1210:05LHR - ONT
1 stop15h 48mLufthansa
Thu 20/206:00ONT - LHR
1 stop20h 50mLufthansa
Deal found 18/12£651
Sun 29/1208:20LHR - ONT
1 stop22h 08mIberia
Sat 22/214:54ONT - LHR
1 stop13h 10mIberia
Deal found 18/12£671
Thu 26/1214:30LHR - ONT
1 stop17h 11mKLM
Fri 24/113:00ONT - LHR
1 stop13h 35mKLM
Deal found 18/12£674
Sat 28/1210:05LHR - ONT
1 stop15h 48mUnited Airlines
Mon 30/1213:57ONT - LHR
1 stop14h 03mUnited Airlines
Deal found 17/12£804
Tue 24/1217:05LHR - ONT
2 stops28h 53mFinnair
Tue 31/1210:46ONT - LHR
1 stop17h 19mFinnair
Deal found 19/12£1,000
Thu 19/1212:00LGW - ONT
1 stop27h 09mMultiple Airlines
Sun 22/1209:00ONT - LGW
1 stop17h 35mMultiple Airlines
Deal found 18/12£1,081
Thu 26/1212:30LHR - ONT
1 stop19h 11mDelta
Sat 4/107:00ONT - LHR
1 stop20h 10mDelta
Deal found 19/12£1,103
Thu 19/1214:30LHR - ONT
1 stop15h 32mAmerican Airlines
Mon 23/1216:25ONT - LHR
1 stop12h 55mAmerican Airlines
Deal found 19/12£1,279

Find flights to Ontario within your budget

Locate flights to Ontario that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 19 December 2024.

Fly from

Any airport

Route

Depart

Return

Price

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 14/1

09:20-21:57

1 stop20h 37m

Ontario

Tue 21/1

06:15-12:00

1 stop21h 45m

£398

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 14/1

08:30-21:57

2 stops21h 27m

Ontario

Tue 21/1

06:00-05:55

2 stops15h 55m

£402

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 13/1

11:20-09:56

2 stops30h 36m

Ontario

Sun 26/1

23:59-09:00

2 stops25h 01m

£407

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 12/2

13:50-22:45

1 stop16h 55m

Ontario

Wed 26/2

14:54-12:05

1 stop13h 11m

£414

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 21/1

18:00-13:51

2 stops27h 51m

Ontario

Mon 27/1

06:00-07:20

1 stop17h 20m

£416

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 13/1

12:30-22:52

1 stop18h 22m

Ontario

Mon 27/1

13:00-10:35

1 stop13h 35m

£418

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Tue 21/1

19:35-22:45

2 stops35h 10m

Ontario

Mon 27/1

07:00-10:15

2 stops43h 15m

£445

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 11/1

10:45-23:25

1 stop20h 40m

Ontario

Tue 14/1

13:21-10:00

1 stop12h 39m

£447

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 18/3

10:40-22:17

1 stop18h 37m

Ontario

Tue 25/3

16:30-13:20

1 stop13h 50m

£452

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 14/1

11:10-20:51

2 stops17h 41m

Ontario

Tue 4/2

05:10-07:10

2 stops18h 00m

£453

Flights are sorted by cheapest return flights first.

Deals found on 18/12

Showing 1-10 of 33 results
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Best time to book a flight to Ontario

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

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

When is the best time to book a flight to Ontario?

Use this chart to determine the optimal time to book a return flight from London to Ontario. Price data was last updated on 13 December 2024.

The price you pay for your flight to Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 58 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

How long is the flight to Ontario?

On average, a flight from London to Ontario takes 16 hours 27 minutes. Flights to Ontario from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

What are the most popular airlines that fly to Ontario?

The most popular airlines flying from London to Ontario are British Airways, Virgin Atlantic and Finnair.

British Airways

British Airways

From £546

Virgin Atlantic

Virgin Atlantic

From £498

Finnair

Finnair

From £548

Lufthansa

Lufthansa

From £606

What are the cheapest airlines that fly to Ontario?

The cheapest airlines flying from London to Ontario are Virgin Atlantic, British Airways and Finnair.

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 19 December 2024.
Read reviews from past customers who have flown United Airlines, Delta and British Airways to Ontario. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
8,600 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very Good
8,600 reviews
Delta
8.0
Very Good
8,600 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,349 reviews
Delta
8.0
Very Good
8,600 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.7
Good
1,285 reviews
Delta
8.0
Very Good
8,600 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Virgin Atlantic
7.5
Good
668 reviews
Delta
8.0
Very Good
8,600 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air France
7.4
Good
1,505 reviews
Delta
8.0
Very Good
8,600 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Ontario airport overview

At just 3.7km (2.3 miles) east of downtown Ontario, Ontario International Airport  is a small but well-equipped alternative to Los Angeles Airport and John Wayne Airport for passengers flying to California.

The number of flights to Ontario International Airport has been declining steadily in recent years (there were 4.8 million passengers in 2010, but the terminals are built to handle twice that) – some say due to the lack of direct flights to major destinations, in comparison with other airports nearby. However, those who use the airport agree that it is a convenient alternative, well connected to nearby air fields and towns, easy to get in and out of, clean and with good basic facilities.

  • What airport do you fly into for flights to Ontario?

    If you book a flight to Ontario, you will be flying into Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • Can I find cheaper flights to Ontario if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Ontario on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Ontario?

    Based on reviews from Cheapflights users, Virgin Atlantic is rated the highest out of the airlines that fly to Ontario.

  • What is the cheapest airport to fly to in Ontario?

    Ontario is currently the cheapest airport to fly to in Ontario. One-way flights to Ontario typically cost £465, while return flights cost around £114.

  • Where does the fastest flight to Ontario depart from?

    For those looking to save time traveling to Ontario, London offers the quickest one-way flight (13 hours 27 minutes).

  • Does Ontario have car hire?

    Yes. Those touching down at Ontario can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Ontario?

    Yes. Ontario has hotels nearby for those requiring accommodations. Delta Hotels by Marriott Ontario Airport is the closest property to Ontario (0.0 mi away from Ontario).

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How does Cheapflights help users find flights to Ontario?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights 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 to Ontario?

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 Ontario.

Can Cheapflights find flights to Ontario with no change fees?

Yes, we can. To see specific flights 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 to Ontario become cheaper?

Yes, Cheapflights offers price alerts on Ontario flights so you can book your flight when prices are ideal. Enable price alerts 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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