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$331+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
ITO — ONT
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
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 July 1, 2025.

Round-trip from

$372
(Alaska Airlines)

One-way from

$331
(Alaska Airlines)

Popular in

July

Cheapest in

November

Average price

$687
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 ($71 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 1, 2025.

This Alaska Airlines deal was found by Cheapflights users on 6/29. 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 9/116:00 amITO - ONT
2 stops15h 03mAlaska Airlines
Mon 9/156:00 amONT - ITO
2 stops14h 39mAlaska Airlines
Deal found 6/29$372
This Hawaiian Airlines deal was found by Cheapflights users on 6/29. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/119:43 amITO - ONT
1 stop8h 27mHawaiian Airlines
Mon 9/1510:09 amONT - ITO
1 stop8h 50mHawaiian Airlines
Deal found 6/29$534
This Southwest deal was found by Cheapflights users on 6/30. 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 7/306:55 pmITO - ONT
2 stops10h 10mSouthwest
Sat 8/165:25 amONT - ITO
2 stops12h 15mSouthwest
Deal found 6/30$594
This United Airlines deal was found by Cheapflights users on 6/30. 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.
Tue 7/157:00 pmITO - ONT
3 stops14h 14mUnited Airlines
Sat 7/195:05 amONT - ITO
2 stops16h 24mUnited Airlines
Deal found 6/30$1,527
This Delta deal was found by Cheapflights users on 6/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/67:00 pmITO - ONT
2 stops12h 50mDelta
Thu 9/1111:50 amONT - ITO
2 stops13h 27mDelta
Deal found 6/29$1,704
This American Airlines deal was found by Cheapflights users on 6/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/307:00 pmITO - ONT
2 stops20h 08mAmerican Airlines
Sat 8/166:17 amONT - ITO
3 stops15h 12mAmerican Airlines
Deal found 6/30$1,725

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 July 1, 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

Thu 9/11

6:00 am-12:03 am

2 stops15h 03m

Ontario

Mon 9/15

6:00 am-5:39 pm

2 stops14h 39m

$372

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Thu 9/11

9:43 am-9:10 pm

1 stop8h 27m

Ontario

Mon 9/15

10:09 am-3:59 pm

1 stop8h 50m

$534

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Wed 7/30

6:55 pm-8:05 am

2 stops10h 10m

Ontario

Sat 8/16

5:25 am-2:40 pm

2 stops12h 15m

$594

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Tue 7/15

7:00 pm-12:14 pm

3 stops14h 14m

Ontario

Sat 7/19

5:05 am-6:29 pm

2 stops16h 24m

$1,527

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Sat 9/6

7:00 pm-10:50 am

2 stops12h 50m

Ontario

Thu 9/11

11:50 am-10:17 pm

2 stops13h 27m

$1,704

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Wed 7/30

7:00 pm-6:08 pm

2 stops20h 08m

Ontario

Sat 8/16

6:17 am-6:29 pm

3 stops15h 12m

$1,725

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Wed 10/15

6:13 pm-8:37 pm

1 stop23h 24m

$331

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Wed 7/16

7:00 pm-5:43 pm

2 stops19h 43m

$382

HiloOntario

ITO - ONT

ITOONT

Hilo Intl

Wed 7/16

9:34 am-9:27 pm

1 stop8h 53m

$799

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

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.

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 July 1, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from Hilo to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

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

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,273 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

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
7,973 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,539 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

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
8,858 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

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 $331. Users have also found prices from $382 and $799 on United Airlines and Hawaiian Airlines, 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

See prices for flight routes from nearby airports that may be better suited for you.
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