HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Hilo

$172+ 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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ITO
Nov 1 — Nov 81
Sat 11/1
Sat 11/8
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Hilo with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$314
(KAYAK)

One-way from

$172
(Alaska Airlines)

Popular in

June

Cheapest in

September

Average price

$605
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 ($80 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

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 2, 2025.

This KAYAK deal was found by Cheapflights users on 10/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2911:59 amONT - ITO
2 stops13h 27mAlaska Airlines
Fri 10/316:00 amITO - ONT
1 stop8h 14mAlaska Airlines
Deal found 10/1$314
This Alaska Airlines deal was found by Cheapflights users on 10/2. 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 11/116:00 amONT - ITO
2 stops16h 30mAlaska Airlines
Fri 11/148:56 amITO - ONT
2 stops12h 36mAlaska Airlines
Deal found 10/2$344
This Alaska Airlines deal was found by Cheapflights users on 10/2. 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 10/279:45 amONT - ITO
1 stop10h 11mAlaska Airlines
Fri 10/316:00 amITO - ONT
1 stop8h 14mAlaska Airlines
Deal found 10/2$409
This KAYAK deal was found by Cheapflights users on 10/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:00 amONT - ITO
2 stops16h 30mAlaska Airlines
Sun 11/166:00 amITO - ONT
1 stop9h 14mAlaska Airlines
Deal found 10/1$429
This KAYAK deal was found by Cheapflights users on 10/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/216:00 amONT - ITO
2 stops14h 49mAlaska Airlines
Tue 10/285:26 pmITO - ONT
2 stops14h 39mAlaska Airlines
Deal found 10/2$439
This Alaska Airlines deal was found by Cheapflights users on 10/2. 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 11/116:00 amONT - ITO
2 stops16h 30mAlaska Airlines
Sat 11/156:00 amITO - ONT
1 stop9h 14mAlaska Airlines
Deal found 10/2$449
This Alaska Airlines deal was found by Cheapflights users on 10/1. 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 11/49:47 amONT - ITO
1 stop9h 33mAlaska Airlines
Fri 11/76:00 amITO - ONT
1 stop9h 14mAlaska Airlines
Deal found 10/1$454

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 2, 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

Tue 11/11

6:00 am-8:30 pm

2 stops16h 30m

Hilo Intl

Fri 11/14

8:56 am-11:32 pm

2 stops12h 36m

$344

OntarioHilo

ONT - ITO

ONTITO

Ontario

Wed 10/29

11:59 am-10:26 pm

2 stops13h 27m

Hilo Intl

Fri 10/31

6:00 am-8:53 pm

2 stops11h 53m

$369

OntarioHilo

ONT - ITO

ONTITO

Ontario

Wed 1/7

8:13 am-4:05 pm

1 stop9h 52m

Hilo Intl

Thu 1/15

10:56 am-10:28 pm

1 stop9h 32m

$369

OntarioHilo

ONT - ITO

ONTITO

Ontario

Wed 1/7

11:53 am-10:34 pm

2 stops12h 41m

Hilo Intl

Tue 1/13

12:05 pm-10:28 pm

1 stop8h 23m

$379

OntarioHilo

ONT - ITO

ONTITO

Ontario

Mon 10/27

9:45 am-4:56 pm

1 stop10h 11m

Hilo Intl

Fri 10/31

6:00 am-5:14 pm

1 stop8h 14m

$409

OntarioHilo

ONT - ITO

ONTITO

Ontario

Thu 1/8

8:13 am-4:05 pm

1 stop9h 52m

Hilo Intl

Wed 1/14

12:05 pm-10:28 pm

1 stop8h 23m

$409

OntarioHilo

ONT - ITO

ONTITO

Ontario

Wed 1/7

8:13 am-4:05 pm

1 stop9h 52m

Hilo Intl

Fri 1/16

12:05 pm-10:28 pm

1 stop8h 23m

$414

OntarioHilo

ONT - ITO

ONTITO

Ontario

Wed 11/12

6:00 am-8:30 pm

2 stops16h 30m

Hilo Intl

Sun 11/16

6:00 am-5:14 pm

1 stop9h 14m

$429

OntarioHilo

ONT - ITO

ONTITO

Ontario

Wed 1/7

11:53 am-10:34 pm

2 stops12h 41m

Hilo Intl

Sat 1/10

9:00 pm-3:08 pm

2 stops16h 08m

$448

OntarioHilo

ONT - ITO

ONTITO

Ontario

Thu 1/8

11:53 am-10:34 pm

2 stops12h 41m

Hilo Intl

Sat 1/10

9:00 pm-3:08 pm

2 stops16h 08m

$448

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/1

Showing 1-10 of 20 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, March is the cheapest month in which you can book a flight from Ontario to Hilo (average of $330). Flying from Ontario to Hilo in December is currently the most expensive (average of $722). 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 2, 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
10,994 reviews

Crew

8.5

Entertainment

7.0

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

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
10,994 reviews
Alaska Airlines
8.0
Very good
10,994 reviews

Crew

8.5

Entertainment

7.0

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

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
4,248 reviews
Alaska Airlines
8.0
Very good
10,994 reviews

Crew

8.5

Entertainment

7.0

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

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
2,762 reviews
Alaska Airlines
8.0
Very good
10,994 reviews

Crew

8.5

Entertainment

7.0

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

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 16h 30m. Alaska Airlines provides one of the quickest options available for as low as $344. 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 $374, 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, March is the cheapest month in which you can book a flight from Ontario to Hilo (average of $330). Flying from Ontario to Hilo in December is currently the most expensive (average of $722). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Hilo

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Honolulu flights
San Francisco to Honolulu flights
Los Angeles to Kahului flights
San Francisco to Kahului flights
Los Angeles to Kailua-Kona flights
Ontario to Honolulu flights
San Francisco to Kailua-Kona flights
San Francisco to Lihue flights
San Jose to Honolulu flights
Los Angeles to Lihue flights
San Diego to Honolulu flights
Oakland to Honolulu flights
San Jose to Kahului flights
Las Vegas to Honolulu flights
Oakland to Kahului flights
San Diego to Kahului flights
Sacramento to Honolulu flights
Long Beach to Honolulu flights
Sacramento to Kahului flights
Oakland to Lihue flights
Ontario to Kahului flights
Santa Ana to Honolulu flights
Burbank to Honolulu flights
San Diego to Lihue flights
Oakland to Kailua-Kona flights
San Diego to Kailua-Kona flights
Ontario to Kailua-Kona flights
Las Vegas to Kahului flights
San Jose to Lihue flights
Sacramento to Lihue flights
Sacramento to Kailua-Kona flights
San Jose to Kailua-Kona flights
Las Vegas to Kailua-Kona flights
Ontario to Lihue flights
Santa Ana to Kahului flights
Fresno to Honolulu flights
Los Angeles to Hilo flights
Santa Ana to Kailua-Kona flights
Las Vegas to Lihue flights
Reno to Honolulu flights
Santa Ana to Hilo flights
Long Beach to Kahului flights
San Francisco to Hilo flights
Monterey to Honolulu flights
Los Angeles to Hoolehua flights
Reno to Lihue flights
Long Beach to Lihue flights
Palm Springs to Honolulu flights
Reno to Kahului flights

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 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$374Average$582FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$392Average$658FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$501Average$626FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.