$141 Cheap Flights from Kailua-Kona (KOA) to Ontario (ONT)

View $141 flight on Fri, Jan 16, 2026Opens in a new window

Popular airlines from Kona Intl. Airport (KOA) to Los Angeles - Ontario Intl. Airport (ONT)

Cheap Flights from Kailua-Kona to Ontario (KOA-ONT)

Prices were available within the past 7 days and start at $141 for one-way flights and $228 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Thu, Jan 29 - Mon, Feb 2
KOA
Kona Coast
ONT
Ontario
$228 Roundtrip, found 3 days ago
$228
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Thu, Jan 29 from Kona Coast to Ontario, returning Mon, Feb 2, priced at $228 found 3 days ago
Southwest Airlines
Wed, Feb 18 - Wed, Feb 25
KOA
Kona Coast
ONT
Ontario
$268 Roundtrip, found 4 days ago
$268
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Wed, Feb 18 from Kona Coast to Ontario, returning Wed, Feb 25, priced at $268 found 4 days ago
Southwest Airlines
Wed, May 6 - Mon, May 11
KOA
Kona Coast
ONT
Ontario
$268 Roundtrip, found 4 days ago
$268
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Wed, May 6 from Kona Coast to Ontario, returning Mon, May 11, priced at $268 found 4 days ago
Alaska Airlines
Tue, Feb 3 - Sun, Feb 8
KOA
Kona Coast
ONT
Ontario
$275 Roundtrip, found 5 days ago
$275
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Tue, Feb 3 from Kona Coast to Ontario, returning Sun, Feb 8, priced at $275 found 5 days ago
Southwest Airlines
Thu, Feb 19 - Sun, Feb 22
KOA
Kona Coast
ONT
Ontario
$280 Roundtrip, found 4 days ago
$280
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Thu, Feb 19 from Kona Coast to Ontario, returning Sun, Feb 22, priced at $280 found 4 days ago
Alaska Airlines
Thu, Jan 22 - Wed, Jan 28
KOA
Kona Coast
ONT
Ontario
$281 Roundtrip, found 2 days ago
$281
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Thu, Jan 22 from Kona Coast to Ontario, returning Wed, Jan 28, priced at $281 found 2 days ago
Southwest Airlines
Fri, Jan 16 - Mon, Jan 19
KOA
Kona Coast
ONT
Ontario
$282 Roundtrip, found 2 days ago
$282
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Fri, Jan 16 from Kona Coast to Ontario, returning Mon, Jan 19, priced at $282 found 2 days ago
American Airlines
Mon, Jan 12 - Mon, Jan 19
KOA
Kona Coast
ONT
Ontario
$290 Roundtrip, found 3 days ago
$290
Roundtrip
found 3 days ago
Select American Airlines flight, departing Mon, Jan 12 from Kona Coast to Ontario, returning Mon, Jan 19, priced at $290 found 3 days ago
Delta
Mon, Jan 12 - Mon, Jan 19
KOA
Kona Coast
ONT
Ontario
$295 Roundtrip, found 3 days ago
$295
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, Jan 12 from Kona Coast to Ontario, returning Mon, Jan 19, priced at $295 found 3 days ago
Hawaiian Airlines
Wed, Feb 4 - Sun, Feb 8
KOA
Kona Coast
ONT
Ontario
$301 Roundtrip, found 2 days ago
$301
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Wed, Feb 4 from Kona Coast to Ontario, returning Sun, Feb 8, priced at $301 found 2 days ago

Find the cheapest month to fly from Kailua-Kona (KOA) to Ontario (ONT)

January is typically the cheapest month to fly

From $275 - $1,072 per traveler.

Alternative airports near Ontario

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to John Wayne SNA. Average driving time to city center is 42 minutes. Flights from $522
SNA
John Wayne
Average driving time to city center42 min
Flights from $522
Flights from Kailua-Kona (KOA) to Ontario (ONT)
Origin airport
Kona Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, Southwest Airlines, United
Roundtrip price
$228
Distance
2548 mi

Kailua-Kona to Ontario Flights

The cheapest times to fly from Kailua-Kona to Ontario

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 Kailua-Kona to Ontario are during the month of January. You can find some of the cheapest flights from Kailua-Kona to Ontario with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Kailua-Kona to Ontario

Sunday is one of the best days to book for cheap flights from Kailua-Kona to Ontario: 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 Kailua-Kona to Ontario

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 Kailua-Kona to Ontario in 2026. You can also book with separate airlines for your outbound and return journeys, from $141 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 Kailua-Kona to Ontario 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 Kailua-Kona to Ontario 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 Kona Intl. Airport (KOA) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Lock in a cheap one-way flight from $141 or cheap return flight from $228 from Kona Intl. Airport (KOA) to Los Angeles - Ontario Intl. Airport (ONT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Kona Intl. Airport (KOA) to Los Angeles - Ontario Intl. Airport (ONT)?
The cheapest month to fly from KOA to ONT is January, when there's less demand. Off-peak months are often when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Kona Intl. Airport (KOA) to Los Angeles - Ontario Intl. Airport (ONT)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from KOA to ONT. Then, sort your results by "Price (lowest to highest)" to snag the best deal available.
How many flights per day from Kona Intl. Airport (KOA) to Los Angeles - Ontario Intl. Airport (ONT)?
Direct flights from Kona Intl. Airport (KOA) to Los Angeles - Ontario Intl. Airport (ONT) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from KOA to ONT?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change depending on various factors, such as the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Kona Intl. Airport (KOA) to Los Angeles - Ontario Intl. Airport (ONT)?
To land at Los Angeles - Ontario Intl. Airport (ONT) on schedule, select a flight that takes off from Kona Intl. Airport (KOA) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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.
What airports do you fly into for Ontario from Kona Intl. Airport (KOA)?
Browse your flight options from Kona Intl. Airport (KOA) to Los Angeles Intl. Airport (LAX). This is the only Ontario airport you can arrive at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Kona Intl. Airport (KOA) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Waiting until right before your break to book a flight from KOA to ONT often results in higher prices. While you may come across some last-minute discounts, there's no guarantee. Keep your travel plans flexible for the best chance of snagging a bargain.
Is it cheaper to book a KOA to ONT flight and hotel package?
Booking a KOA to ONT flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Pick from our impressive range of accommodations and then add activities, flights and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Kona Intl. Airport (KOA) to Los Angeles - Ontario Intl. Airport (ONT)?
If you booked your KOA to ONT flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

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*Available to One Key members.