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Ontario

$172+ 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 11/25. Fares are subject to change and may not be available on all flights or dates of travel.
ITO — ONT
Jul 11 — Jul 181
Sat 7/11
Sat 7/18
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 June 11, 2026.

This Booking.com deal was found by Cheapflights users on 6/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/15:59 pm
ITO
-
ONT
1 stop25h 33m
Multiple Airlines
Thu 1/289:00 am
ONT
-
ITO
1 stop8h 13m
Multiple Airlines
Deal found 6/8$517
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 8/277:44 pm
ITO
-
ONT
2 stops11h 07m
Multiple Airlines
Mon 8/317:12 am
ONT
-
ITO
2 stops12h 00m
Multiple Airlines
Deal found 6/10$535
This Booking.com deal was found by Cheapflights users on 6/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/147:02 pm
ITO
-
ONT
2 stops15h 07m
Multiple Airlines
Thu 7/169:20 pm
ONT
-
ITO
2 stops23h 57m
Multiple Airlines
Deal found 6/8$565
This Southwest deal was found by Cheapflights users on 6/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/246:55 pm
ITO
-
ONT
2 stops11h 10m
Southwest
Sun 6/288:00 am
ONT
-
ITO
1 stop13h 10m
Southwest
Deal found 6/9$585
This Expedia deal was found by Cheapflights users on 6/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/247:02 pm
ITO
-
ONT
2 stops15h 07m
Multiple Airlines
Sun 6/287:00 am
ONT
-
ITO
2 stops11h 13m
Multiple Airlines
Deal found 6/9$595
This Alaska Airlines deal was found by Cheapflights users on 6/9. 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.
Sat 7/411:27 am
ITO
-
ONT
1 stop7h 18m
Multiple Airlines
Fri 7/109:11 am
ONT
-
ITO
1 stop8h 16m
Multiple Airlines
Deal found 6/9$665
This Booking.com deal was found by Cheapflights users on 6/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/96:00 am
ITO
-
ONT
2 stops14h 56m
Multiple Airlines
Sat 6/2010:54 am
ONT
-
ITO
2 stops14h 05m
Multiple Airlines
Deal found 6/8$675
This Booking.com deal was found by Cheapflights users on 6/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/247:02 pm
ITO
-
ONT
2 stops15h 07m
Multiple Airlines
Tue 6/306:02 am
ONT
-
ITO
2 stops15h 15m
Multiple Airlines
Deal found 6/7$685
This Booking.com deal was found by Cheapflights users on 6/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/239:26 am
ITO
-
ONT
2 stops11h 26m
Multiple Airlines
Mon 7/279:11 am
ONT
-
ITO
1 stop8h 16m
Multiple Airlines
Deal found 6/10$695
This Booking.com deal was found by Cheapflights users on 6/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/136:00 am
ITO
-
ONT
1 stop12h 45m
Multiple Airlines
Mon 6/1512:04 pm
ONT
-
ITO
2 stops12h 55m
Multiple Airlines
Deal found 6/10$715

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 June 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$517
(Booking.com)

One-way from

$172
(Southwest)

Popular in

October

Cheapest in

August

Average price

$635
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 ($38 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 11, 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

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Sun 11/1

8:45 pm-9:32 pm

1 stop22h 47m

Ontario

Thu 1/28

7:30 am-5:27 pm

2 stops11h 57m

$526

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Thu 8/27

7:44 pm-9:51 am

2 stops11h 07m

Ontario

Mon 8/31

7:12 am-4:12 pm

2 stops12h 00m

$535

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Sun 8/23

7:44 pm-11:04 am

2 stops12h 20m

Ontario

Thu 8/27

3:07 pm-7:03 am

2 stops18h 56m

$565
Quickest round-trip

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Wed 6/24

8:00 am-8:45 pm

1 stop9h 45m

Ontario

Sun 6/28

8:00 am-6:10 pm

1 stop13h 10m

$575
Cheapest one-way

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Sun 10/25

12:48 pm-9:01 pm

1 stop29h 13m

$265

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Mon 8/10

7:44 pm-1:09 pm

2 stops14h 25m

$268

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Mon 10/19

9:26 am-11:42 pm

2 stops11h 16m

$268
Quickest one-way

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Fri 10/16

9:26 am-9:22 pm

1 stop8h 56m

$288

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Sun 10/18

9:26 am-9:22 pm

1 stop8h 56m

$288

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Sun 10/25

6:55 pm-10:20 am

2 stops12h 25m

$298

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 14 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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