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Cheap flights to Ontario from $691

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 24/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
BOS — ONT
19 May — 26 May1
1 adult
Sun 19/5
Sun 26/5

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 525,180 searches and data was last updated on 14 May 2024.

Popular in

December

Cheapest in

February

Average price

$1,279

Return from

$962

One-way from

$691
High demand for flights, 11% potential price rise
Best time to find cheap flights, 4% potential price drop
Average for return flights in May 2024
From Sydney Kingsford Smith to Los Angeles
One-way flight from Sydney Kingsford Smith (SYD) to Ontario (ONT)

Cheap flights to Ontario in May & June 2024

Discover affordable flights and deals to Ontario in May and June 2024. In the last 7 days, Cheapflights users made a total of 525,180 searches and data was last updated on 14 May 2024.
The lowest-priced flights departing to Ontario in May and June 2024 can be found below. Deals update frequently so be sure to check back soon if you're not finding what you're looking for.
Wed 12/609:25SYD - ONT
2 stops23h 51mDelta
Wed 19/605:35ONT - SYD
2 stops32h 00mDelta
Deal found 13/5$1,290
Thu 16/510:20SYD - ONT
1 stop16h 41mUnited Airlines
Wed 29/506:00ONT - SYD
1 stop32h 00mUnited Airlines
Deal found 12/5$1,335
Thu 13/610:20SYD - ONT
1 stop29h 07mUnited Airlines
Wed 26/606:10ONT - SYD
1 stop31h 50mUnited Airlines
Deal found 14/5$1,337
Tue 28/510:20SYD - ONT
1 stop19h 25mUnited Airlines
Wed 29/513:50ONT - SYD
1 stop24h 10mUnited Airlines
Deal found 13/5$1,346
Tue 28/510:20SYD - ONT
1 stop19h 25mUnited Airlines
Sun 9/605:15ONT - SYD
2 stops32h 45mUnited Airlines
Deal found 13/5$1,353
Tue 28/510:20SYD - ONT
1 stop19h 25mUnited Airlines
Sun 9/605:50ONT - SYD
1 stop32h 10mUnited Airlines
Deal found 13/5$1,364
Sat 8/610:20SYD - ONT
2 stops27h 18mUnited Airlines
Mon 17/605:15ONT - SYD
2 stops32h 45mUnited Airlines
Deal found 14/5$1,409
Wed 22/510:20SYD - ONT
1 stop16h 41mUnited Airlines
Fri 31/513:50ONT - SYD
1 stop24h 10mUnited Airlines
Deal found 13/5$1,420
Thu 13/610:20SYD - ONT
1 stop19h 25mUnited Airlines
Thu 20/613:55ONT - SYD
1 stop24h 05mUnited Airlines
Deal found 14/5$1,423

Ontario 2024 flight deals

Explore flight deals for Ontario in 2024, offering the best prices and options to suit your preferences. In the last 7 days, Cheapflights users made a total of 525,180 searches and data were last updated on 14 May 2024.
The lowest fares on flights travelling to Ontario in May and June 2024. For more flight deals, be sure to check back very soon.
Sun 20/1021:40SYD - ONT
1 stop17h 20mHawaiian Airlines
Fri 25/1009:40ONT - SYD
1 stop40h 05mHawaiian Airlines
Deal found 13/5$1,225
Wed 12/609:25SYD - ONT
2 stops23h 51mDelta
Wed 19/605:35ONT - SYD
2 stops32h 00mDelta
Deal found 13/5$1,290
Thu 7/1116:50SYD - ONT
1 stop19h 58mAmerican Airlines
Mon 11/1113:28ONT - SYD
2 stops45h 42mAmerican Airlines
Deal found 12/5$1,323
Thu 16/510:20SYD - ONT
1 stop16h 41mUnited Airlines
Wed 29/506:00ONT - SYD
1 stop32h 00mUnited Airlines
Deal found 12/5$1,335
Thu 13/610:20SYD - ONT
1 stop29h 07mUnited Airlines
Wed 26/606:10ONT - SYD
1 stop31h 50mUnited Airlines
Deal found 14/5$1,337
Tue 28/510:20SYD - ONT
1 stop19h 25mUnited Airlines
Wed 29/513:50ONT - SYD
1 stop24h 10mUnited Airlines
Deal found 13/5$1,346
Tue 28/510:20SYD - ONT
1 stop19h 25mUnited Airlines
Sun 9/605:15ONT - SYD
2 stops32h 45mUnited Airlines
Deal found 13/5$1,353
Tue 28/510:20SYD - ONT
1 stop19h 25mUnited Airlines
Sun 9/605:50ONT - SYD
1 stop32h 10mUnited Airlines
Deal found 13/5$1,364
Sat 19/1021:40SYD - ONT
1 stop17h 20mHawaiian Airlines
Sun 27/1009:40ONT - SYD
1 stop40h 05mHawaiian Airlines
Deal found 14/5$1,365

Flights to Ontario departing soon

Discover available last-minute flight options to Ontario, providing immediate availability and potentially lower prices. In the last 7 days, Cheapflights users made a total of 525,180 searches and data was last updated on 14 May 2024.
Browse through available last-minute flights travelling to Ontario. Make sure the flight you book matches the day, time, and destination you're looking for.
Wed 22/510:20SYD - ONT
1 stop16h 41mUnited Airlines
Fri 31/513:50ONT - SYD
1 stop24h 10mUnited Airlines
Deal found 13/5$1,420
Wed 22/510:20SYD - ONT
1 stop16h 41mUnited Airlines
Fri 31/505:15ONT - SYD
2 stops32h 45mUnited Airlines
Deal found 13/5$1,427
Mon 20/516:20SYD - ONT
1 stop22h 35mMultiple Airlines
Fri 24/509:40ONT - SYD
1 stop36h 00mMultiple Airlines
Deal found 13/5$2,285
Thu 23/510:20SYD - ONT
2 stops27h 28mUnited Airlines
Sun 2/613:29ONT - SYD
2 stops24h 31mUnited Airlines
Deal found 13/5$2,755
Mon 20/510:20SYD - ONT
1 stop16h 41mUnited Airlines
Fri 24/505:15ONT - SYD
2 stops32h 45mUnited Airlines
Deal found 13/5$2,829
Mon 20/522:10SYD - ONT
1 stop36h 55mChina Airlines
Thu 23/500:10ONT - SYD
1 stop41h 35mChina Airlines
Deal found 13/5$2,894
Mon 20/522:10SYD - ONT
1 stop36h 55mChina Airlines
Thu 23/500:10ONT - SYD
2 stops49h 15mChina Airlines
Deal found 13/5$3,346
Thu 23/522:10SYD - ONT
1 stop36h 55mChina Airlines
Sat 1/600:10ONT - SYD
2 stops47h 15mChina Airlines
Deal found 13/5$3,682
Wed 22/518:00SYD - ONT
2 stops41h 05mChina Airlines
Thu 30/500:10ONT - SYD
1 stop41h 35mChina Airlines
Deal found 13/5$3,750

One-way flights to Ontario

Explore one-way flight options to Ontario for greater flexibility in your travel plans. Find up-to-date pricing and availability for one-way flights. In the last 7 days, Cheapflights users made a total of 525,180 searches and data was last updated on 14 May 2024.
If you're looking for options on one-way flights to Ontario, check out these fares. Users can also find round-trip Ontario flights by using the search form above.
Thu 24/1017:20SYD - ONT
1 stop21h 40mMultiple Airlines
Deal found 13/5$691
Thu 24/1017:20SYD - ONT
1 stop21h 40mMultiple Airlines
Deal found 14/5$692
Thu 22/816:20SYD - ONT
1 stop22h 35mMultiple Airlines
Deal found 14/5$696
Mon 20/516:20SYD - ONT
1 stop22h 35mMultiple Airlines
Deal found 13/5$751
Mon 26/816:20SYD - ONT
1 stop22h 35mMultiple Airlines
Deal found 13/5$786
Sat 9/1117:25SYD - ONT
1 stop22h 15mMultiple Airlines
Deal found 13/5$812
Mon 10/616:20SYD - ONT
1 stop22h 25mMultiple Airlines
Deal found 12/5$844
Mon 26/816:20SYD - ONT
1 stop22h 35mMultiple Airlines
Deal found 12/5$848
Mon 3/616:20SYD - ONT
1 stop22h 25mMultiple Airlines
Deal found 13/5$871

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 525,180 searches and data was last updated on 14 May 2024.

Fly from

Any airport

Budget

$1,225 - $1,607

Route

Depart

Return

Price

Sydney Kingsford SmithOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Sun 20/10

1 stop17h 20m

Ontario

Fri 25/10

1 stop40h 05m

$1,225

Sydney Kingsford SmithOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Wed 12/6

2 stops23h 51m

Ontario

Wed 19/6

2 stops32h 00m

$1,290

Sydney Kingsford SmithOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 7/11

1 stop19h 58m

Ontario

Mon 11/11

2 stops45h 42m

$1,323

Sydney Kingsford SmithOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Tue 18/6

1 stop19h 25m

Ontario

Wed 14/8

1 stop19h 25m

$1,335

Sydney Kingsford SmithOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 13/6

1 stop29h 07m

Ontario

Wed 26/6

1 stop31h 50m

$1,337

Sydney Kingsford SmithOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Sat 19/10

1 stop17h 20m

Ontario

Sun 27/10

1 stop40h 05m

$1,365

Sydney Kingsford SmithOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Tue 29/10

1 stop17h 20m

Ontario

Sun 10/11

1 stop35h 55m

$1,411

Sydney Kingsford SmithOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 31/10

1 stop21h 35m

Ontario

Sun 10/11

1 stop35h 55m

$1,430

Sydney Kingsford SmithOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Mon 28/10

1 stop37h 25m

Ontario

Tue 5/11

1 stop42h 30m

$1,607

Flights are sorted by cheapest first

Deals found on 13/5

Average price of flights to Ontario by month

Plan your trip to Ontario by taking into account the cheapest months to travel. The average price of a one-way flight to Ontario is currently $777 while a return flight costs $1,369. Price data was last updated on 5 May 2024.

Temperature and rainfall in Ontario by month

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

LAX

Temperature

14 - 23 °C

If weather is an important factor for your trip to 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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 C).

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

Use this chart to determine the optimal time to book a return flight to Ontario. Price data was last updated on 10 May 2024.
The best time to book flights to Ontario is 77 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Search Deals

When is the cheapest time to fly to Ontario?

Use this chart to determine the cheapest time to fly return to Ontario. Price data was last updated on 5 May 2024.
Morning
Midday
Afternoon
Evening
All times are departure.
Users looking for the lowest fares to Ontario should consider flying on Monday mornings, when prices are typically cheapest. Budget-minded travellers will want to avoid Wednesday mornings, when prices are usually at their highest.
Search Deals

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 14 May 2024.
Read through reviews of airlines servicing Ontario, such as American Airlines, United Airlines and China Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.3
Very Good
911 reviews

Entertainment

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.6

Reviews

1 / 10

The business class cabin is really nice - EXCEPT the two interior seats have no divider between them - which makes for a bad experience -especially when the person next to you coughs excessively with no protection. Basically, the person is looking at you and coughing at you the WHOLE FLIGHT. Most major airlines have a sliding divider you can close for privacy and safety reasons. The window seats do not have this problem - so if you book business class and are traveling solo - make sure to get a window seat - I didn't and regretted it.

8.3
Very Good
911 reviews
8.3
Very Good
911 reviews

Entertainment

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.6

Reviews

1 / 10

The business class cabin is really nice - EXCEPT the two interior seats have no divider between them - which makes for a bad experience -especially when the person next to you coughs excessively with no protection. Basically, the person is looking at you and coughing at you the WHOLE FLIGHT. Most major airlines have a sliding divider you can close for privacy and safety reasons. The window seats do not have this problem - so if you book business class and are traveling solo - make sure to get a window seat - I didn't and regretted it.

8.0
Very Good
10,706 reviews
8.3
Very Good
911 reviews

Entertainment

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.6

Reviews

1 / 10

The business class cabin is really nice - EXCEPT the two interior seats have no divider between them - which makes for a bad experience -especially when the person next to you coughs excessively with no protection. Basically, the person is looking at you and coughing at you the WHOLE FLIGHT. Most major airlines have a sliding divider you can close for privacy and safety reasons. The window seats do not have this problem - so if you book business class and are traveling solo - make sure to get a window seat - I didn't and regretted it.

8.0
Very Good
2,301 reviews
8.3
Very Good
911 reviews

Entertainment

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.6

Reviews

1 / 10

The business class cabin is really nice - EXCEPT the two interior seats have no divider between them - which makes for a bad experience -especially when the person next to you coughs excessively with no protection. Basically, the person is looking at you and coughing at you the WHOLE FLIGHT. Most major airlines have a sliding divider you can close for privacy and safety reasons. The window seats do not have this problem - so if you book business class and are traveling solo - make sure to get a window seat - I didn't and regretted it.

7.7
Good
4,403 reviews
8.3
Very Good
911 reviews

Entertainment

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.6

Reviews

1 / 10

The business class cabin is really nice - EXCEPT the two interior seats have no divider between them - which makes for a bad experience -especially when the person next to you coughs excessively with no protection. Basically, the person is looking at you and coughing at you the WHOLE FLIGHT. Most major airlines have a sliding divider you can close for privacy and safety reasons. The window seats do not have this problem - so if you book business class and are traveling solo - make sure to get a window seat - I didn't and regretted it.

7.7
Good
1,054 reviews
8.3
Very Good
911 reviews

Entertainment

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.6

Reviews

1 / 10

The business class cabin is really nice - EXCEPT the two interior seats have no divider between them - which makes for a bad experience -especially when the person next to you coughs excessively with no protection. Basically, the person is looking at you and coughing at you the WHOLE FLIGHT. Most major airlines have a sliding divider you can close for privacy and safety reasons. The window seats do not have this problem - so if you book business class and are traveling solo - make sure to get a window seat - I didn't and regretted it.

  • What does ONT mean?

    ONT is a unique code, commonly called an IATA code, used in the aviation industry to identify airports. This code, along with many others, are defined by IATA (International Air Transport Association). A ONT flight refers to a flight to Ontario Airport.

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

    Most people fly into Ontario (ONT) if they book a flight to Ontario. Ontario is conveniently located just 4.9 km from Ontario’s city centre.

  • 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, United Airlines is rated the highest out of the airlines that fly to Ontario.

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

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

  • Where does the fastest flight to Ontario depart from?

    For those looking to save time traveling to Ontario, Brisbane offers the quickest one-way flight (16 hours 28 minutes).

  • Does Ontario Airport have car hire?

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

  • Are there hotels close to Ontario Airport?

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

See more FAQs

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