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Ontario

$255+ 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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
ITO — ONT
May 23 — May 301
Sat 5/23
Sat 5/30
1 adult, Economy
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Cheap 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 April 23, 2026.

This Alaska Airlines deal was found by Cheapflights users on 4/19. 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 9/299:26 am
ITO
-
ONT
1 stop8h 54m
Multiple Airlines
Wed 9/307:20 am
ONT
-
ITO
1 stop10h 53m
Multiple Airlines
Deal found 4/19$510
This Alaska Airlines deal was found by Cheapflights users on 4/21. 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 8/1811:27 am
ITO
-
ONT
1 stop7h 18m
Multiple Airlines
Tue 8/257:20 am
ONT
-
ITO
1 stop8h 54m
Multiple Airlines
Deal found 4/21$515
This Expedia deal was found by Cheapflights users on 4/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:42 am
ITO
-
ONT
1 stop11h 35m
Multiple Airlines
Wed 6/106:02 am
ONT
-
ITO
2 stops15h 15m
Multiple Airlines
Deal found 4/19$585
This Alaska Airlines deal was found by Cheapflights users on 4/18. 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 5/59:59 am
ITO
-
ONT
1 stop8h 11m
Multiple Airlines
Wed 5/610:39 am
ONT
-
ITO
2 stops13h 54m
Multiple Airlines
Deal found 4/18$590
This Alaska Airlines deal was found by Cheapflights users on 4/18. 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.
Mon 5/49:59 am
ITO
-
ONT
2 stops10h 49m
Multiple Airlines
Fri 5/86:00 am
ONT
-
ITO
2 stops14h 39m
Multiple Airlines
Deal found 4/18$595
This Expedia deal was found by Cheapflights users on 4/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/610:56 am
ITO
-
ONT
1 stop7h 14m
Multiple Airlines
Wed 6/106:02 am
ONT
-
ITO
2 stops15h 15m
Multiple Airlines
Deal found 4/19$605
This Alaska Airlines deal was found by Cheapflights users on 4/21. 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 5/2911:27 am
ITO
-
ONT
1 stop7h 50m
Multiple Airlines
Fri 6/129:11 am
ONT
-
ITO
1 stop8h 16m
Multiple Airlines
Deal found 4/21$625
This Alaska Airlines deal was found by Cheapflights users on 4/21. 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 5/2911:27 am
ITO
-
ONT
1 stop7h 50m
Multiple Airlines
Sun 6/77:00 am
ONT
-
ITO
2 stops11h 14m
Multiple Airlines
Deal found 4/21$635

Find 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 April 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$510
(Alaska Airlines)

One-way from

$255
(Trip.com)

Popular in

October

Cheapest in

August
Provider with most accurate pricing for Hilo Intl-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Hilo Intl-Ontario flights.
Search Deals
From Hilo Intl to Ontario
Search Deals
One-way flight from Hilo Intl to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($37 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
Search Deals

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 April 23, 2026.
Use the filters below to find and compare flights from Hilo to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Tue 9/29

9:26 am-9:20 pm

1 stop8h 54m

Ontario

Wed 9/30

7:20 am-3:13 pm

1 stop10h 53m

$510

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Tue 6/2

7:59 pm-10:21 am

2 stops11h 22m

Ontario

Tue 6/9

6:00 am-6:14 pm

2 stops15h 14m

$585

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Thu 6/4

9:26 am-10:17 pm

1 stop9h 51m

Ontario

Sun 6/7

7:00 am-3:14 pm

2 stops11h 14m

$655

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Sat 5/23

7:44 pm-10:21 am

2 stops11h 37m

Ontario

Sun 6/28

9:11 am-2:27 pm

1 stop8h 16m

$685
Cheapest one-way
Quickest one-way

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Wed 5/20

11:27 am-10:17 pm

1 stop7h 50m

$268

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Wed 8/12

7:59 pm-9:56 am

2 stops10h 57m

$268

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Tue 8/11

8:45 pm-1:09 pm

2 stops13h 24m

$268

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Fri 5/29

11:27 am-10:17 pm

1 stop7h 50m

$288

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Fri 5/22

11:27 am-10:17 pm

1 stop7h 50m

$288

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Thu 5/21

9:26 am-10:17 pm

1 stop9h 51m

$308

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 13 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on Hilo-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Hilo-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Hilo-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Hilo-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Hilo-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

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.

  • 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.

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