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Ontario

$168+ 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
ITO — ONT
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
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 January 26, 2026.

This Expedia deal was found by Cheapflights users on 1/26. 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.
Mon 2/237:41 pm
ITO
-
ONT
1 stop24h 34m
Multiple Airlines
Mon 3/26:14 am
ONT
-
ITO
2 stops13h 27m
Multiple Airlines
Deal found 1/26$379
This Alaska Airlines deal was found by Cheapflights users on 1/25. 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 5/18:53 am
ITO
-
ONT
1 stop9h 17m
Multiple Airlines
Mon 5/48:30 am
ONT
-
ITO
1 stop9h 01m
Multiple Airlines
Deal found 1/25$446
This Alaska Airlines deal was found by Cheapflights users on 1/25. 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 2/39:55 am
ITO
-
ONT
1 stop10h 33m
Multiple Airlines
Wed 2/48:13 am
ONT
-
ITO
1 stop10h 00m
Multiple Airlines
Deal found 1/25$581
This Alaska Airlines deal was found by Cheapflights users on 1/25. 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 1/2611:11 am
ITO
-
ONT
1 stop9h 17m
Multiple Airlines
Fri 1/308:13 am
ONT
-
ITO
1 stop8h 19m
Multiple Airlines
Deal found 1/25$595
This Alaska Airlines deal was found by Cheapflights users on 1/24. 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 3/107:42 am
ITO
-
ONT
1 stop10h 13m
Multiple Airlines
Tue 3/178:45 am
ONT
-
ITO
1 stop11h 44m
Multiple Airlines
Deal found 1/24$600
This Alaska Airlines deal was found by Cheapflights users on 1/25. 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.
Wed 3/119:50 am
ITO
-
ONT
1 stop8h 05m
Multiple Airlines
Wed 3/188:32 am
ONT
-
ITO
1 stop10h 43m
Multiple Airlines
Deal found 1/25$625
This Alaska Airlines deal was found by Cheapflights users on 1/24. 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 6/210:44 am
ITO
-
ONT
1 stop8h 23m
Multiple Airlines
Sun 6/79:30 am
ONT
-
ITO
1 stop7h 41m
Multiple Airlines
Deal found 1/24$626

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 January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$446
(Alaska Airlines)

One-way from

$168
(Alaska Airlines)

Popular in

October

Cheapest in

August

Average price

$624
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. 5% potential increase in price ($31 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 26, 2026.
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

Mon 2/23

7:41 pm-10:15 pm

1 stop24h 34m

Ontario

Mon 3/2

6:14 am-5:41 pm

2 stops13h 27m

$379

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Fri 5/1

8:53 am-9:10 pm

1 stop9h 17m

Ontario

Mon 5/4

8:30 am-2:31 pm

1 stop9h 01m

$446

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Wed 3/11

9:50 am-8:55 pm

1 stop8h 05m

Ontario

Wed 3/18

8:32 am-4:15 pm

1 stop10h 43m

$625

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Tue 6/2

10:44 am-10:07 pm

1 stop8h 23m

Ontario

Sun 6/7

9:30 am-2:11 pm

1 stop7h 41m

$626

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Thu 3/12

6:00 am-8:55 pm

1 stop11h 55m

Ontario

Sun 3/15

8:45 am-10:35 pm

1 stop16h 50m

$692

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Sat 2/14

12:30 pm-10:15 pm

1 stop7h 45m

Ontario

Tue 2/17

8:41 am-5:29 pm

1 stop10h 48m

$727

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Sun 5/31

9:46 am-10:07 pm

1 stop9h 21m

Ontario

Sun 6/7

9:30 am-5:01 pm

1 stop10h 31m

$757

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Mon 2/9

12:09 pm-10:28 pm

1 stop8h 19m

Ontario

Fri 2/13

8:41 am-2:25 pm

1 stop7h 44m

$819

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Sun 2/8

12:09 pm-10:28 pm

1 stop8h 19m

Ontario

Thu 2/12

8:41 am-2:25 pm

1 stop7h 44m

$1,091

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Mon 2/23

6:44 pm-8:49 am

2 stops12h 05m

Ontario

Mon 3/2

9:53 am-9:24 pm

2 stops13h 31m

$1,123

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 18 results
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.

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, May is the cheapest month in which you can book a flight from Hilo to Ontario (average of $83). Flying from Hilo to Ontario in December is currently the most expensive (average of $217). 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.

  • 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, May is the cheapest month in which you can book a flight from Hilo to Ontario (average of $83). Flying from Hilo to Ontario in December is currently the most expensive (average of $217). 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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