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$174+ Cheap flights from Kailua-Kona to Ontario (KOA - 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
KOA — ONT
Nov 26 — Dec 31
Wed 11/26
Wed 12/3
1 adult, Economy
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Find flight deals from Kailua-Kona to Ontario

Cheapest flights from Kailua-Kona to Ontario
Explore the most affordable flight options available from Kailua-Kona to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 27, 2025.

This Alaska Airlines deal was found by Cheapflights users on 10/26. 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 12/28:44 amKOA - ONT
1 stop9h 39mAlaska Airlines
Mon 12/87:00 amONT - KOA
1 stop9h 02mAlaska Airlines
Deal found 10/26$348
This Alaska Airlines deal was found by Cheapflights users on 10/26. 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 12/28:44 amKOA - ONT
1 stop9h 39mAlaska Airlines
Wed 12/36:00 amONT - KOA
1 stop10h 40mAlaska Airlines
Deal found 10/26$377
This Alaska Airlines deal was found by Cheapflights users on 10/26. 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 12/28:44 amKOA - ONT
1 stop9h 39mAlaska Airlines
Fri 12/512:13 pmONT - KOA
1 stop11h 17mAlaska Airlines
Deal found 10/26$383
This American Airlines deal was found by Cheapflights users on 10/25. 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 11/269:35 pmKOA - ONT
1 stop9h 26mAmerican Airlines
Mon 12/14:47 pmONT - KOA
1 stop26h 00mAmerican Airlines
Deal found 10/25$416
This KAYAK deal was found by Cheapflights users on 10/26. 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.
Thu 12/181:07 pmKOA - ONT
1 stop7h 01mAlaska Airlines
Thu 1/18:00 amONT - KOA
1 stop10h 13mAlaska Airlines
Deal found 10/26$428
This Alaska Airlines deal was found by Cheapflights users on 10/26. 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.
Wed 12/39:10 pmKOA - ONT
1 stop12h 09mAlaska Airlines
Sun 12/76:00 amONT - KOA
1 stop13h 22mAlaska Airlines
Deal found 10/26$433
This American Airlines deal was found by Cheapflights users on 10/26. 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.
Thu 11/209:35 pmKOA - ONT
1 stop9h 38mAmerican Airlines
Mon 11/249:59 amONT - KOA
1 stop32h 48mAmerican Airlines
Deal found 10/26$449
This American Airlines deal was found by Cheapflights users on 10/26. 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 11/269:35 pmKOA - ONT
1 stop9h 26mAmerican Airlines
Mon 12/86:17 amONT - KOA
1 stop10h 56mAmerican Airlines
Deal found 10/26$458
This American Airlines deal was found by Cheapflights users on 10/26. 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 11/269:35 pmKOA - ONT
1 stop9h 26mAmerican Airlines
Fri 12/56:17 amONT - KOA
1 stop10h 56mAmerican Airlines
Deal found 10/26$469
This Alaska Airlines deal was found by Cheapflights users on 10/26. 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 12/211:00 amKOA - ONT
1 stop7h 23mAlaska Airlines
Thu 12/412:13 pmONT - KOA
1 stop11h 17mAlaska Airlines
Deal found 10/26$470
This Alaska Airlines deal was found by Cheapflights users on 10/26. 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 11/279:30 pmKOA - ONT
1 stop10h 25mAlaska Airlines
Thu 12/412:13 pmONT - KOA
1 stop11h 17mAlaska Airlines
Deal found 10/26$474
This Alaska Airlines deal was found by Cheapflights users on 10/27. 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 11/36:00 amKOA - ONT
1 stop9h 14mAlaska Airlines
Mon 11/1011:59 amONT - KOA
1 stop11h 41mAlaska Airlines
Deal found 10/27$477

Cheap flight deals from Kailua-Kona to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Kailua-Kona (KOA) 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 October 27, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$348
(Alaska Airlines)

One-way from

$174
(Alaska Airlines)

Popular in

April

Cheapest in

August

Average price

$465
Provider with most accurate pricing for Kona Intl-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Kona Intl-Ontario flights.
Search Deals
From Kona Intl to Ontario
Search Deals
One-way flight from Kona Intl to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($31 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Kailua-Kona 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 October 27, 2025.
Use the filters below to find and compare flights from Kailua-Kona to Ontario that are best for you.

Fly from

Kailua-Kona

Fly to

Ontario

Route

Depart

Return

Price

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Tue 12/2

8:44 am-8:23 pm

1 stop9h 39m

Ontario

Mon 12/8

7:00 am-2:02 pm

1 stop9h 02m

$348

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Tue 12/2

8:44 am-8:23 pm

1 stop9h 39m

Ontario

Wed 12/3

6:00 am-2:40 pm

1 stop10h 40m

$377

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Tue 12/2

8:44 am-8:23 pm

1 stop9h 39m

Ontario

Sat 12/6

6:00 am-5:22 pm

1 stop13h 22m

$383

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Wed 11/26

9:35 pm-9:01 am

1 stop9h 26m

Ontario

Mon 12/1

4:47 pm-4:47 pm

1 stop26h 00m

$416

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Wed 12/3

9:10 pm-11:19 am

1 stop12h 09m

Ontario

Sun 12/7

6:00 am-5:22 pm

1 stop13h 22m

$433

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Wed 11/26

9:35 pm-9:01 am

1 stop9h 26m

Ontario

Mon 12/8

6:17 am-3:13 pm

1 stop10h 56m

$458

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Wed 11/26

9:35 pm-9:01 am

1 stop9h 26m

Ontario

Tue 12/2

9:59 am-4:47 pm

1 stop8h 48m

$458

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Wed 11/26

9:35 pm-9:01 am

1 stop9h 26m

Ontario

Fri 11/28

9:59 am-4:47 pm

1 stop8h 48m

$469

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Wed 11/26

9:35 pm-9:01 am

1 stop9h 26m

Ontario

Fri 12/5

6:17 am-3:13 pm

1 stop10h 56m

$469

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Tue 12/2

11:00 am-8:23 pm

1 stop7h 23m

Ontario

Thu 12/4

12:13 pm-9:30 pm

1 stop11h 17m

$470

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 20 results
1
2

Compare providers for flights from Kailua-Kona to Ontario

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 Kailua-Kona to Ontario in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 Kailua-Kona-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Kailua-Kona-Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Kailua-Kona-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Kailua-Kona-Ontario flights, Cheapflights users trust eDreams the most. eDreams 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 Kailua-Kona-Ontario 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 Kailua-Kona to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Kailua-Kona 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 Kailua-Kona to Ontario

What is the cheapest month to book a flight from Kailua-Kona to Ontario?

Currently, May is the cheapest month in which you can book a flight from Kailua-Kona to Ontario (average of $83). Flying from Kailua-Kona to Ontario in June is currently the most expensive (average of $216). 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.

What is the cheapest time of day to fly from KOA to ONT?

Find hourly flight availability from Kailua-Kona to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 27, 2025.

One of the essential ways to save on airfare from Kailua-Kona to Ontario is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 44% on airfare.

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 October 27, 2025.
Read reviews from past customers who have flown Southwest from Kailua-Kona to Ontario. 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.
Southwest
8.0
Very good
4,236 reviews

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,236 reviews
Southwest
8.0
Very good
4,236 reviews

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Kailua-Kona to Ontario. 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 Kailua-Kona to Ontario?

    Departing from Kailua-Kona to Ontario will take you 9h 26m. Airlines will cover a distance of 2547 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Kailua-Kona to Ontario round-trip?

    Our cheapest airline available from Kailua-Kona to Ontario is Southwest. Our recent data shows that you can find tickets from as low as $319 on this airline. You may be able to fly from Kailua-Kona to Ontario for 31% less than the average price by searching for this airline.

  • Can I find deals for flights from Kailua-Kona to Ontario that include hotel bookings?

    Yes. In addition to deals on Kailua-Kona to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Kailua-Kona to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kailua-Kona to Ontario.

  • Can I find deals for business class flights from Kailua-Kona to Ontario?

    Yes. Cheapflights offers flight deals from Kailua-Kona 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 Kailua-Kona to Ontario?

    Currently, May is the cheapest month in which you can book a flight from Kailua-Kona to Ontario (average of $83). Flying from Kailua-Kona to Ontario in June is currently the most expensive (average of $216). 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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Top airline flying from Kailua-Kona to Ontario

Discover the top airline that operate flights from Kailua-Kona to Ontario. 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 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$319Average$485FlexibilityNo cancel feeOn-time63%

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