$224 Cheap Flights from Ontario (ONT) to Hilo (ITO)

View $224 flight on Tue, May 6, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Ontario to Hilo (ONT-ITO)

Prices were available within the past 7 days and start at $224 for one-way flights and $507 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Mon, May 12 - Sun, May 18
ONT
Ontario
ITO
Hawaii Island
$507 Roundtrip, found 1 day ago
$507
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Mon, May 12 from Ontario to Hawaii Island, returning Sun, May 18, priced at $507 found 1 day ago
Hawaiian Airlines
Mon, May 12 - Sun, May 18
ONT
Ontario
ITO
Hawaii Island
$510 Roundtrip, found 1 day ago
$510
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Mon, May 12 from Ontario to Hawaii Island, returning Sun, May 18, priced at $510 found 1 day ago
Hawaiian Airlines
Tue, Jun 3 - Thu, Jun 19
ONT
Ontario
ITO
Hawaii Island
$516 Roundtrip, found 1 day ago
$516
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Tue, Jun 3 from Ontario to Hawaii Island, returning Thu, Jun 19, priced at $516 found 1 day ago
Hawaiian Airlines
Tue, Jun 3 - Thu, Jun 19
ONT
Ontario
ITO
Hawaii Island
$520 Roundtrip, found 1 day ago
$520
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Tue, Jun 3 from Ontario to Hawaii Island, returning Thu, Jun 19, priced at $520 found 1 day ago
Southwest Airlines
Mon, May 5 - Mon, May 12
ONT
Ontario
ITO
Hawaii Island
$544 Roundtrip, found 4 days ago
$544
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Mon, May 5 from Ontario to Hawaii Island, returning Mon, May 12, priced at $544 found 4 days ago
Alaska Airlines
Wed, Sep 17 - Thu, Sep 25
ONT
Ontario
ITO
Hawaii Island
$544 Roundtrip, found 3 days ago
$544
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Sep 17 from Ontario to Hawaii Island, returning Thu, Sep 25, priced at $544 found 3 days ago
Southwest Airlines
Tue, Nov 4 - Tue, Nov 11
ONT
Ontario
ITO
Hawaii Island
$546 Roundtrip, found 5 days ago
$546
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Tue, Nov 4 from Ontario to Hawaii Island, returning Tue, Nov 11, priced at $546 found 5 days ago
Hawaiian Airlines
Tue, Sep 16 - Wed, Sep 17
ONT
Ontario
ITO
Hawaii Island
$547 Roundtrip, found 1 day ago
$547
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Tue, Sep 16 from Ontario to Hawaii Island, returning Wed, Sep 17, priced at $547 found 1 day ago
United
Mon, Oct 27 - Mon, Nov 3
ONT
Ontario
ITO
Hawaii Island
$569 Roundtrip, found 2 hours ago
$569
Roundtrip
found 2 hours ago
Select United flight, departing Mon, Oct 27 from Ontario to Hawaii Island, returning Mon, Nov 3, priced at $569 found 2 hours ago
Delta
Sun, Apr 27 - Sat, May 3
ONT
Ontario
ITO
Hawaii Island
$728 Roundtrip, found 2 days ago
$728
Roundtrip
found 2 days ago
Select Delta flight, departing Sun, Apr 27 from Ontario to Hawaii Island, returning Sat, May 3, priced at $728 found 2 days ago
Flights from Ontario (ONT) to Hilo (ITO)
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Hilo Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, Southwest Airlines, United
Roundtrip price
$506
Distance
2493 mi

Ontario to Hilo Flights

The cheapest times to fly from Ontario to Hilo

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Ontario to Hilo are during the month of May. You can find some of the cheapest flights from Ontario to Hilo with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ontario to Hilo

Sunday is one of the best days to book for cheap flights from Ontario to Hilo: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Ontario to Hilo

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Ontario to Hilo in 2025. You can also book with separate airlines for your outbound and return journeys, from $224 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Ontario to Hilo flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Ontario to Hilo airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Los Angeles - Ontario Intl. Airport (ONT) to Hilo Intl. Airport (ITO) cost?
Discover the latest flight deals from ONT to ITO by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ONT to ITO?
The cheapest flights from ONT to ITO are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from ONT to ITO?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from ONT to ITO. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Los Angeles - Ontario Intl. Airport (ONT) to Hilo Intl. Airport (ITO)?
There are no daily nonstop flights from Los Angeles - Ontario Intl. Airport (ONT) to Hilo Intl. Airport (ITO). But you can book flights with layovers. Filter your search on Expedia to include one or more stops, and you’ll be cruising above the clouds in no time.
What day of the week has the most flights from ONT to ITO?
You’ll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Los Angeles - Ontario Intl. Airport (ONT) to Hilo Intl. Airport (ITO)?
To land at Hilo Intl. Airport (ITO) on schedule, select a flight that takes off from Los Angeles - Ontario Intl. Airport (ONT) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Los Angeles - Ontario Intl. Airport (ONT) to Hilo Intl. Airport (ITO) last-minute?
Last-minute bookings from ONT to ITO are usually more expensive. To lock in the best prices, start looking for flights well in advance. That said, if you can play around with your travel dates, it’s possible to land a cheap fare just before your departure.
Is it cheaper to book an ONT to ITO flight and hotel package?
Compared with arranging hotels and flights separately, booking an ONT to ITO flight and hotel package with Expedia could result in significant savings. What’s more, managing everything in one place takes the hassle out of travel planning. Simply secure your flights and choose from our extensive range of hotels, then customize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Los Angeles - Ontario Intl. Airport (ONT) to Hilo Intl. Airport (ITO)?
If you booked your ONT to ITO flight within the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you’d like more information.

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*Available to One Key members.