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Ontario

$157+ 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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
KOA — ONT
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
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Cheap 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 January 26, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/24. 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 3/109:01 pm
KOA
-
ONT
1 stop20h 54m
Multiple Airlines
Tue 3/1712:02 pm
ONT
-
KOA
1 stop13h 03m
Multiple Airlines
Deal found 1/24$330
This Alaska Airlines deal was found by Cheapflights users on 1/25. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/116:00 am
KOA
-
ONT
1 stop11h 55m
Multiple Airlines
Wed 3/188:32 am
ONT
-
KOA
1 stop12h 34m
Multiple Airlines
Deal found 1/25$405
This Alaska Airlines deal was found by Cheapflights users on 1/24. 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 3/99:17 pm
KOA
-
ONT
1 stop10h 51m
Alaska Airlines
Mon 3/2310:33 am
ONT
-
KOA
1 stop9h 58m
Alaska Airlines
Deal found 1/24$415
This Alaska Airlines deal was found by Cheapflights users on 1/25. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/26:00 am
KOA
-
ONT
1 stop14h 28m
Multiple Airlines
Wed 2/48:13 am
ONT
-
KOA
1 stop14h 15m
Multiple Airlines
Deal found 1/25$447
This Alaska Airlines deal was found by Cheapflights users on 1/24. 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 5/1911:56 am
KOA
-
ONT
1 stop9h 00m
Alaska Airlines
Fri 5/296:00 am
ONT
-
KOA
1 stop11h 46m
Alaska Airlines
Deal found 1/24$448
This Alaska Airlines deal was found by Cheapflights users on 1/24. 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 3/127:09 am
KOA
-
ONT
1 stop10h 46m
Multiple Airlines
Sun 3/158:45 am
ONT
-
KOA
1 stop16h 30m
Multiple Airlines
Deal found 1/24$491
This Alaska Airlines deal was found by Cheapflights users on 1/24. 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 3/239:59 am
KOA
-
ONT
1 stop10h 00m
Multiple Airlines
Thu 3/2610:33 am
ONT
-
KOA
1 stop9h 58m
Multiple Airlines
Deal found 1/24$540
This United Airlines deal was found by Cheapflights users on 1/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/3012:00 pm
KOA
-
ONT
1 stop8h 06m
United Airlines
Mon 8/31:33 pm
ONT
-
KOA
1 stop8h 48m
United Airlines
Deal found 1/25$755
This Alaska Airlines deal was found by Cheapflights users on 1/23. 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.
Sun 2/89:10 pm
KOA
-
ONT
1 stop11h 49m
Alaska Airlines
Thu 2/1212:02 pm
ONT
-
KOA
1 stop12h 55m
Alaska Airlines
Deal found 1/23$772
This Alaska Airlines deal was found by Cheapflights users on 1/25. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/910:12 am
KOA
-
ONT
1 stop10h 16m
Multiple Airlines
Fri 2/136:08 pm
ONT
-
KOA
1 stop19h 45m
Multiple Airlines
Deal found 1/25$798

Find 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 January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$330
(Alaska Airlines)

One-way from

$157
(Delta)

Popular in

April

Cheapest in

August

Average price

$436
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. 4% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 26, 2026.
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 3/10

9:01 pm-8:55 pm

1 stop20h 54m

Ontario

Tue 3/17

12:02 pm-10:05 pm

1 stop13h 03m

$330

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Wed 3/11

6:00 am-8:55 pm

1 stop11h 55m

Ontario

Wed 3/18

8:32 am-6:06 pm

1 stop12h 34m

$405

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Mon 3/9

9:17 pm-11:08 am

1 stop10h 51m

Ontario

Mon 3/23

10:33 am-5:31 pm

1 stop9h 58m

$415

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Tue 5/19

11:56 am-11:56 pm

1 stop9h 00m

Ontario

Fri 5/29

6:00 am-2:46 pm

1 stop11h 46m

$448

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Thu 3/12

7:09 am-8:55 pm

1 stop10h 46m

Ontario

Sun 3/15

8:45 am-10:15 pm

1 stop16h 30m

$491

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Sun 2/8

9:10 pm-10:59 am

1 stop11h 49m

Ontario

Thu 2/12

12:02 pm-10:57 pm

1 stop12h 55m

$772

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Mon 2/9

10:12 am-10:28 pm

1 stop10h 16m

Ontario

Fri 2/13

6:08 pm-11:53 am

1 stop19h 45m

$798

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Sun 3/15

6:00 am-8:55 pm

1 stop11h 55m

Ontario

Sat 3/21

8:32 am-3:00 pm

1 stop9h 28m

$838

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Sat 2/21

12:30 pm-10:15 pm

1 stop7h 45m

Ontario

Tue 3/10

8:45 am-3:53 pm

1 stop10h 08m

$2,104

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Thu 3/5

7:09 am-10:15 pm

1 stop13h 06m

$162

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/23

Showing 1-10 of 18 results
1
2
  • Most accurate provider: When it comes to deals on Kailua-Kona-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Kailua-Kona-Ontario flight deals on Cheapflights vs. FlightHub >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 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 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 December is currently the most expensive (average of $217). 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 January 26, 2026.
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
4,268 reviews

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

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
4,268 reviews
Southwest
8.0
Very good
4,268 reviews

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

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 10h 51m. Airlines will cover a distance of 2547 mi.

  • 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 32% 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 December is currently the most expensive (average of $217). 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 January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$319Average$485FlexibilityNo cancel feeOn-time63%

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