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$234+ Cheap flights from Hilo to Ontario (ITO - ONT)

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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
ITO — ONT
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Hilo to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Hilo (ITO) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$549
(Alaska Airlines)

One-way from

$234
(Hawaiian Airlines)

Popular in

July

Cheapest in

December

Average price

$515
From Hilo Intl to Ontario
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One-way flight from Hilo Intl to Ontario
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Highest demand for flights based on searches. 9% potential increase in price ($52 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Hilo to Ontario

Cheapest flights from Hilo to Ontario
Explore the most affordable flight options available from Hilo to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/97:45 amITO - ONT
1 stop9h 52mAlaska Airlines
Mon 10/137:43 pmONT - ITO
2 stops25h 06mAlaska Airlines
Deal found 9/10$549
This Alaska Airlines deal was found by Cheapflights users on 9/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/266:10 pmITO - ONT
2 stops13h 34mAlaska Airlines
Tue 9/3010:09 amONT - ITO
1 stop8h 50mAlaska Airlines
Deal found 9/11$564
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/169:43 amITO - ONT
1 stop8h 27mAlaska Airlines
Tue 9/2310:09 amONT - ITO
1 stop9h 47mAlaska Airlines
Deal found 9/9$577
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1012:32 pmITO - ONT
2 stops21h 05mAlaska Airlines
Tue 10/141:31 pmONT - ITO
2 stops20h 34mAlaska Airlines
Deal found 9/10$589
This Alaska Airlines deal was found by Cheapflights users on 9/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/209:43 amITO - ONT
1 stop8h 27mAlaska Airlines
Tue 9/2310:09 amONT - ITO
1 stop9h 47mAlaska Airlines
Deal found 9/11$591
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/146:10 pmITO - ONT
2 stops13h 34mAlaska Airlines
Tue 9/1610:09 amONT - ITO
1 stop9h 47mAlaska Airlines
Deal found 9/10$606
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/116:10 pmITO - ONT
2 stops13h 34mAlaska Airlines
Mon 9/1511:39 amONT - ITO
2 stops13h 38mAlaska Airlines
Deal found 9/10$608
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/259:43 amITO - ONT
1 stop8h 27mAlaska Airlines
Mon 9/2910:09 amONT - ITO
1 stop8h 50mAlaska Airlines
Deal found 9/10$626
This Hawaiian Airlines deal was found by Cheapflights users on 9/11. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/269:43 amITO - ONT
1 stop8h 27mHawaiian Airlines
Tue 9/3010:09 amONT - ITO
1 stop9h 47mHawaiian Airlines
Deal found 9/11$631
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/107:49 pmITO - ONT
2 stops13h 48mAlaska Airlines
Mon 10/135:45 pmONT - ITO
2 stops27h 04mAlaska Airlines
Deal found 9/10$634

Cheapflights Fare Finder

 
Customize your flight search to find flights from Hilo 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 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Hilo to Ontario that are best for you.

Fly from

Hilo

Fly to

Ontario

Route

Depart

Return

Price

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Thu 10/9

7:45 am-8:37 pm

1 stop9h 52m

Ontario

Mon 10/13

7:43 pm-5:49 pm

2 stops25h 06m

$549

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Fri 9/26

6:10 pm-10:44 am

2 stops13h 34m

Ontario

Tue 9/30

10:09 am-3:59 pm

1 stop8h 50m

$564

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Fri 10/10

12:32 pm-12:37 pm

2 stops21h 05m

Ontario

Tue 10/14

1:31 pm-7:05 am

2 stops20h 34m

$589

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Thu 9/25

9:43 am-9:10 pm

1 stop8h 27m

Ontario

Mon 9/29

10:09 am-3:59 pm

1 stop8h 50m

$626

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Fri 9/26

9:43 am-9:10 pm

1 stop8h 27m

Ontario

Tue 9/30

10:09 am-4:56 pm

1 stop9h 47m

$631

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Fri 10/10

7:49 pm-12:37 pm

2 stops13h 48m

Ontario

Mon 10/13

5:45 pm-5:49 pm

2 stops27h 04m

$634

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Thu 10/9

7:45 am-8:37 pm

1 stop9h 52m

Ontario

Mon 10/13

11:07 am-4:16 pm

1 stop8h 09m

$677

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Tue 9/23

7:47 am-9:10 pm

1 stop10h 23m

$234

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Wed 11/12

6:00 am-8:53 pm

2 stops12h 53m

$257

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Wed 9/24

9:43 am-9:10 pm

1 stop8h 27m

$281

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 14 results
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Best time to book a flight from Hilo to Ontario

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

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

Currently, August is the cheapest month in which you can book a flight from Hilo to Ontario (average of $246). Flying from Hilo to Ontario in March is currently the most expensive (average of $328). 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.

Related info for your journey

Find useful and relevant information for your journey from Hilo 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 Hilo to Ontario?

    A quick flight from Hilo to Ontario can take about 9h 52m. Alaska Airlines provides one of the quickest options available for as low as $549. There are 2491 mi between Hilo and Ontario.

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

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

  • How can I find direct flights from Hilo to Ontario?

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

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

    Yes. Cheapflights offers flight deals from Hilo 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 Hilo to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Hilo to Ontario (average of $246). Flying from Hilo to Ontario in March is currently the most expensive (average of $328). 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 Hilo to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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