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$207+ 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 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
ITO — ONT
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$697
(Alaska Airlines)

One-way from

$207
(Alaska Airlines)

Popular in

July

Cheapest in

November

Average price

$654
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. 11% potential increase in price ($72 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 6/278:37 amITO - ONT
2 stops12h 36mAlaska Airlines
Tue 7/12:21 pmONT - ITO
2 stops19h 39mAlaska Airlines
Deal found 6/11$697
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/276:00 amITO - ONT
3 stops13h 52mMultiple Airlines
Tue 7/11:19 pmONT - ITO
2 stops11h 26mMultiple Airlines
Deal found 6/11$1,413
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/167:00 pmITO - ONT
2 stops19h 39mUnited Airlines
Mon 6/301:19 pmONT - ITO
2 stops21h 49mUnited Airlines
Deal found 6/10$2,435

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 12, 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

Fri 6/27

8:37 am-12:13 am

2 stops12h 36m

Ontario

Tue 7/1

2:21 pm-7:00 am

2 stops19h 39m

$697

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Fri 6/27

6:00 am-10:52 pm

3 stops13h 52m

Ontario

Tue 7/1

1:19 pm-9:45 pm

2 stops11h 26m

$1,413

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Fri 9/26

9:42 am-9:10 pm

1 stop8h 28m

$207

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Tue 7/1

5:25 pm-12:14 pm

2 stops15h 49m

$344

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Sat 6/21

8:00 pm-2:29 pm

2 stops15h 29m

$437

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Tue 7/22

9:34 am-9:27 pm

1 stop8h 53m

$539

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Fri 7/18

10:44 am-12:00 pm

2 stops22h 16m

$750

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated June 12, 2025.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • What are the cheapest airlines to fly from Hilo to Ontario one-way?

    For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $207. Users have also found prices from $344 and $437 on United Airlines and Delta, respectively.

  • 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

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