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$464+ Cheap flights from Ontario (ONT) to South Pacific

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 2/14. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SYD
Jan 8 — Jan 151
Thu 1/8
Thu 1/15
1 adult, Economy
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Cheap flight deals from Ontario to South Pacific

Cheapest flights from Ontario to South Pacific
Explore the most affordable flight options available from Ontario to South Pacific. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 9, 2025.

This American Airlines deal was found by Cheapflights users on 12/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/112:56 pmONT - AKL
1 stop21h 14mAmerican Airlines
Wed 12/241:20 pmAKL - ONT
1 stop19h 33mAmerican Airlines
Deal found 12/8$852
This United Airlines deal was found by Cheapflights users on 12/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/101:50 pmONT - AKL
1 stop22h 20mUnited Airlines
Thu 1/293:50 pmAKL - ONT
1 stop22h 53mUnited Airlines
Deal found 12/8$861
This United Airlines deal was found by Cheapflights users on 12/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/101:34 pmONT - AKL
2 stops46h 36mUnited Airlines
Tue 12/233:50 pmAKL - ONT
1 stop15h 11mUnited Airlines
Deal found 12/8$881
This American Airlines deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/83:04 pmONT - AKL
1 stop21h 06mAmerican Airlines
Sun 12/211:20 pmAKL - ONT
1 stop19h 33mAmerican Airlines
Deal found 12/7$900
This United Airlines deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/81:50 pmONT - AKL
1 stop22h 20mUnited Airlines
Sun 12/213:50 pmAKL - ONT
1 stop15h 11mUnited Airlines
Deal found 12/7$901
This American Airlines deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/72:53 pmONT - AKL
1 stop21h 17mAmerican Airlines
Sat 12/201:20 pmAKL - ONT
1 stop19h 33mAmerican Airlines
Deal found 12/7$952
This United Airlines deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/86:41 pmONT - SYD
1 stop19h 34mUnited Airlines
Sun 12/2112:10 pmSYD - ONT
1 stop16h 51mUnited Airlines
Deal found 12/7$962
This United Airlines deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/71:34 pmONT - AKL
2 stops22h 36mUnited Airlines
Sun 12/143:50 pmAKL - ONT
2 stops25h 52mUnited Airlines
Deal found 12/7$965
This United Airlines deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:39 pmONT - SYD
1 stop19h 36mUnited Airlines
Tue 1/1312:10 pmSYD - ONT
1 stop18h 08mUnited Airlines
Deal found 12/7$967
This United Airlines deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:39 pmONT - BNE
1 stop18h 51mUnited Airlines
Sun 12/2811:40 amBNE - ONT
1 stop16h 21mUnited Airlines
Deal found 12/7$968
This United Airlines deal was found by Cheapflights users on 12/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/165:05 amONT - BNE
2 stops32h 25mUnited Airlines
Tue 12/2311:40 amBNE - ONT
1 stop16h 21mUnited Airlines
Deal found 12/8$973
This United Airlines deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/86:00 amONT - SYD
2 stops30h 00mUnited Airlines
Mon 12/1512:10 pmSYD - ONT
1 stop19h 07mUnited Airlines
Deal found 12/7$973

Find flight deals from Ontario to South Pacific

Keep the following information in mind while searching for Ontario to South Pacific flight deals. Data was last updated December 9, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$861
(United Airlines)

One-way from

$464
(United Airlines)

Popular in

December

Cheapest in

February

Average price

$1,255
Provider with most accurate pricing for Los Angeles-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Sydney Kingsford Smith flights.
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From Ontario to South Pacific
Search Deals
One-way flight from Ontario to South Pacific
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($128 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to South Pacific 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 2,558,603 searches. Data last updated December 9, 2025.
Use the filters below to find and compare flights from Ontario to South Pacific that are best for you.

Fly from

Ontario

Fly to

South Pacific

Route

Depart

Return

Price

OntarioAuckland

ONT - AKL

ONTAKL

Ontario

Wed 2/25

1:50 pm-9:10 am

1 stop22h 20m

Auckland Intl

Mon 3/16

2:50 pm-5:41 pm

1 stop22h 51m

$861

OntarioAuckland

ONT - AKL

ONTAKL

Ontario

Thu 3/19

1:40 pm-8:10 am

1 stop22h 30m

Auckland Intl

Wed 3/25

2:50 pm-10:57 pm

1 stop28h 07m

$868

OntarioAuckland

ONT - AKL

ONTAKL

Ontario

Fri 2/20

6:37 pm-9:10 am

1 stop17h 33m

Auckland Intl

Mon 3/9

2:50 pm-12:18 pm

1 stop17h 28m

$911

OntarioAuckland

ONT - AKL

ONTAKL

Ontario

Sun 3/8

5:15 am-8:10 am

2 stops30h 55m

Auckland Intl

Wed 3/25

2:50 pm-8:50 pm

2 stops26h 00m

$915

OntarioAuckland

ONT - AKL

ONTAKL

Ontario

Thu 2/19

6:37 pm-9:10 am

1 stop17h 33m

Auckland Intl

Fri 3/6

3:50 pm-10:57 pm

1 stop28h 07m

$918

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Mon 1/26

1:53 pm-6:20 am

1 stop21h 27m

Sydney Kingsford Smith

Sun 2/8

12:10 pm-11:18 am

1 stop18h 08m

$963

OntarioBrisbane

ONT - BNE

ONTBNE

Ontario

Fri 1/30

1:53 pm-7:30 am

1 stop23h 37m

Brisbane

Mon 2/23

11:40 am-12:38 pm

1 stop18h 58m

$968

OntarioBrisbane

ONT - BNE

ONTBNE

Ontario

Thu 1/29

6:39 pm-7:30 am

1 stop18h 51m

Brisbane

Mon 2/23

11:40 am-7:54 pm

1 stop26h 14m

$968

OntarioBrisbane

ONT - BNE

ONTBNE

Ontario

Sun 2/15

6:37 pm-7:30 am

1 stop18h 53m

Brisbane

Sat 2/28

11:40 am-12:47 pm

1 stop19h 07m

$968

OntarioBrisbane

ONT - BNE

ONTBNE

Ontario

Tue 12/23

6:39 pm-7:30 am

1 stop18h 51m

Brisbane

Sun 12/28

11:40 am-10:01 am

1 stop16h 21m

$968

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/8

Showing 1-10 of 60 results
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Best time to book a flight from Ontario to South Pacific

Have a flexible travel schedule? Discover the best time to fly to South Pacific from Ontario with our price prediction graph.
Estimated round-trip 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 Ontario to South Pacific

What is the cheapest month to book a flight from Ontario to South Pacific?

Currently, April is the cheapest month in which you can book a flight from Ontario to South Pacific (average of $89). Flying from Ontario to South Pacific in September is currently the most expensive (average of $667). 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 ONT to SP?

Find hourly flight availability from Ontario to South Pacific. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 9, 2025.

A simple way to save on the total cost of your ticket is to fly from Ontario to South Pacific at noon. If you’re flexible enough to do this you can expect to save up to 11% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from Ontario to South Pacific?

Use this chart to determine the cheapest time to fly round-trip from Ontario to South Pacific. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Ontario to South Pacific flight should consider departing on Friday at noon when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing South Pacific

Get insights into the airlines that provide service to South Pacific. 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 South Pacific. Reviews last updated December 9, 2025.
Read reviews from past customers who have flown United Airlines from Ontario to South Pacific. 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.
United Airlines
7.4
Good
9,089 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
9,089 reviews
United Airlines
7.4
Good
9,089 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Ontario to South Pacific. 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 from for flights from Ontario to South Pacific?

    Most people fly from Ontario (ONT) if they book a flight from Ontario to South Pacific. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

  • How long is the flight from Ontario to South Pacific?

    There are many flights that can get you from Ontario to South Pacific in 16h 27m. Fly via United Airlines, Alaska Airlines, or Delta to get the fastest option. The distance from Ontario to South Pacific is about 4716 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Ontario to South Pacific?

    The most popular flight routes from Ontario to South Pacific are Ontario - Sydney Kingsford Smith, Ontario - Auckland Intl and Ontario - Melbourne.

  • Can I find deals for flights from Ontario to South Pacific that include hotel bookings?

    Yes. In addition to deals on Ontario to South Pacific flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to South Pacific?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to South Pacific.

  • Can I find deals for business class flights from Ontario to South Pacific?

    Yes. Cheapflights offers flight deals from Ontario to South Pacific 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 Ontario to South Pacific?

    Currently, April is the cheapest month in which you can book a flight from Ontario to South Pacific (average of $89). Flying from Ontario to South Pacific in September is currently the most expensive (average of $667). 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

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Alternative routes for Ontario to South Pacific

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Ontario to South Pacific

Discover the top airline that operate flights from Ontario to South Pacific. 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 2,558,603 searches. Data last updated December 9, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$926Average$1,210FlexibilityNo cancel feeOn-time69%

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