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Hilo

$162+ Cheap flights from Ontario to Hilo (ONT - ITO)

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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ITO
Nov 22 — Nov 291
Sat 11/22
Sat 11/29
1 adult, Economy
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Find flight deals from Ontario to Hilo

Cheapest flights from Ontario to Hilo
Explore the most affordable flight options available from Ontario to Hilo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2025.

This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 12/26:00 amONT - ITO
2 stops12h 05mAlaska Airlines
Sat 12/67:44 pmITO - ONT
2 stops13h 35mAlaska Airlines
Deal found 10/22$496
This Alaska Airlines deal was found by Cheapflights users on 10/21. 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 12/167:00 amONT - ITO
1 stop11h 05mAlaska Airlines
Thu 12/2512:43 pmITO - ONT
1 stop7h 25mAlaska Airlines
Deal found 10/21$499
This Alaska Airlines deal was found by Cheapflights users on 10/20. 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 11/179:47 amONT - ITO
1 stop9h 33mAlaska Airlines
Mon 11/247:44 pmITO - ONT
2 stops12h 11mAlaska Airlines
Deal found 10/20$514
This Alaska Airlines deal was found by Cheapflights users on 10/21. 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 11/146:00 amONT - ITO
2 stops18h 22mAlaska Airlines
Tue 11/186:43 pmITO - ONT
2 stops14h 22mAlaska Airlines
Deal found 10/21$521
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 11/56:00 amONT - ITO
2 stops15h 01mAlaska Airlines
Sat 11/86:00 amITO - ONT
1 stop9h 14mAlaska Airlines
Deal found 10/22$564
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 10/319:45 amONT - ITO
1 stop9h 06mAlaska Airlines
Fri 11/76:00 amITO - ONT
1 stop9h 14mAlaska Airlines
Deal found 10/22$574
This Alaska Airlines deal was found by Cheapflights users on 10/20. 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 12/107:00 amONT - ITO
1 stop11h 05mAlaska Airlines
Sun 12/146:44 pmITO - ONT
2 stops14h 35mAlaska Airlines
Deal found 10/20$579
This Alaska Airlines deal was found by Cheapflights users on 10/21. 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 12/167:00 amONT - ITO
1 stop11h 05mAlaska Airlines
Wed 12/2412:43 pmITO - ONT
1 stop7h 25mAlaska Airlines
Deal found 10/21$587

Cheap flight deals from Ontario to Hilo

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Hilo (ITO). 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 October 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$391
(Alaska Airlines)

One-way from

$162
(Alaska Airlines)

Popular in

June

Cheapest in

February

Average price

$709
Provider with most accurate pricing for Ontario-Hilo Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Hilo Intl flights.
Search Deals
From Ontario to Hilo Intl
Search Deals
One-way flight from Ontario to Hilo Intl
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($82 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Hilo 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 October 23, 2025.
Use the filters below to find and compare flights from Ontario to Hilo that are best for you.

Fly from

Ontario

Fly to

Hilo

Route

Depart

Return

Price

OntarioHilo

ONT - ITO

ONTITO

Ontario

Sat 2/7

8:13 am-4:05 pm

1 stop9h 52m

Hilo Intl

Thu 2/12

12:00 pm-9:55 pm

1 stop7h 55m

$391

OntarioHilo

ONT - ITO

ONTITO

Ontario

Mon 1/19

8:13 am-4:05 pm

1 stop9h 52m

Hilo Intl

Thu 1/22

12:05 pm-10:28 pm

1 stop8h 23m

$424

OntarioHilo

ONT - ITO

ONTITO

Ontario

Tue 12/2

6:00 am-4:05 pm

2 stops12h 05m

Hilo Intl

Sat 12/6

4:35 pm-11:19 am

2 stops16h 44m

$496

OntarioHilo

ONT - ITO

ONTITO

Ontario

Fri 11/14

6:00 am-10:22 pm

2 stops18h 22m

Hilo Intl

Tue 11/18

6:43 pm-11:05 am

2 stops14h 22m

$521

OntarioHilo

ONT - ITO

ONTITO

Ontario

Fri 2/6

8:13 am-5:29 pm

1 stop11h 16m

Hilo Intl

Tue 2/10

12:05 pm-10:28 pm

1 stop8h 23m

$529

OntarioHilo

ONT - ITO

ONTITO

Ontario

Wed 11/5

6:00 am-7:01 pm

2 stops15h 01m

Hilo Intl

Sat 11/8

6:00 am-5:14 pm

1 stop9h 14m

$564

OntarioHilo

ONT - ITO

ONTITO

Ontario

Tue 12/16

7:00 am-4:05 pm

1 stop11h 05m

Hilo Intl

Wed 12/24

12:43 pm-10:08 pm

1 stop7h 25m

$587

OntarioHilo

ONT - ITO

ONTITO

Ontario

Mon 12/15

7:00 am-4:05 pm

1 stop11h 05m

Hilo Intl

Mon 12/22

7:42 am-10:08 pm

1 stop12h 26m

$589

OntarioHilo

ONT - ITO

ONTITO

Ontario

Mon 1/12

8:13 am-4:05 pm

1 stop9h 52m

$162

OntarioHilo

ONT - ITO

ONTITO

Ontario

Fri 1/16

11:53 am-10:34 pm

2 stops12h 41m

$239

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/23

Showing 1-10 of 18 results
1
2

Compare providers for flights from Ontario to Hilo

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Hilo in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Hilo flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Hilo flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Hilo flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Hilo 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 Ontario-Hilo 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 Ontario to Hilo

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

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

Currently, May is the cheapest month in which you can book a flight from Ontario to Hilo (average of $149). Flying from Ontario to Hilo in June is currently the most expensive (average of $251). 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.

Reviews of airlines servicing Hilo

Get insights into the airlines that provide service to Hilo. 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 Hilo. Reviews last updated October 23, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Hawaiian Airlines from Ontario to Hilo. 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.
Alaska Airlines
8.0
Very good
11,155 reviews

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
11,155 reviews
Alaska Airlines
8.0
Very good
11,155 reviews

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Southwest
8.0
Very good
4,237 reviews
Alaska Airlines
8.0
Very good
11,155 reviews

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Hawaiian Airlines
7.8
Good
2,788 reviews
Alaska Airlines
8.0
Very good
11,155 reviews

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Related info for your journey

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

    A quick flight from Ontario to Hilo can take about 9h 52m. Alaska Airlines provides one of the quickest options available for as low as $391. Ontario and Hilo are separated by a distance of 2491 mi.

  • What are the cheapest airlines flying from Ontario to Hilo round-trip?

    Hawaiian Airlines, at $372, was found to be the cheapest airline from Ontario to Hilo.Alternate airlines to your destination round-trip include Alaska Airlines and Southwest. Hawaiian Airlines is priced at 41% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

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

    Currently, May is the cheapest month in which you can book a flight from Ontario to Hilo (average of $149). Flying from Ontario to Hilo in June is currently the most expensive (average of $251). 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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Top 3 airlines flying from Ontario to Hilo

Discover the top 3 airlines that operate flights from Ontario to Hilo. 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 October 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$372Average$512FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$392Average$658FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$551Average$626FlexibilityNo cancel feeOn-time63%

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