$189+ Cheap flights from Ontario to Kailua-Kona (ONT - KOA)
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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — KOA
Jun 15 — Jun 221
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Kailua-Kona 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
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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 Kailua-Kona
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Cheapest flights from Ontario to Kailua-KonaExplore the most affordable flight options available from Ontario to Kailua-Kona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 16, 2026.
Explore the most affordable flight options available from Ontario to Kailua-Kona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 16, 2026.
This Alaska Airlines deal was found by Cheapflights users on 5/14. 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 8/179:11 am
ONT
- KOA
1 stop15h 39m
Multiple Airlines
Tue 8/188:03 am
KOA
- ONT
1 stop12h 08m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$378
This Delta deal was found by Cheapflights users on 5/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:20 am
ONT
- KOA
1 stop14h 15m
Delta
Tue 8/259:06 pm
KOA
- ONT
1 stop11h 13m
Delta
Deal found 5/13![Delta logo]()
$388
This Delta deal was found by Cheapflights users on 5/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:00 am
ONT
- KOA
2 stops14h 35m
Delta
Tue 8/259:06 pm
KOA
- ONT
2 stops11h 59m
Delta
Deal found 5/13![Delta logo]()
$399
This Kiwi.com deal was found by Cheapflights users on 5/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/152:05 pm
ONT
- KOA
1 stop11h 05m
Multiple Airlines
Wed 7/228:31 am
KOA
- ONT
1 stop10h 14m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$404
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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 7/299:11 am
ONT
- KOA
1 stop9h 50m
Multiple Airlines
Tue 8/118:03 am
KOA
- ONT
1 stop12h 08m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$407
This Southwest deal was found by Cheapflights users on 5/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/218:00 am
ONT
- KOA
1 stop13h 05m
Southwest
Wed 8/268:00 am
KOA
- ONT
1 stop9h 10m
Southwest
Deal found 5/11![Southwest logo]()
$408
This Delta deal was found by Cheapflights users on 5/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/96:20 am
ONT
- KOA
1 stop14h 15m
Delta
Tue 9/89:45 pm
KOA
- ONT
1 stop10h 29m
Delta
Deal found 5/12![Delta logo]()
$411
This Delta deal was found by Cheapflights users on 5/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:20 am
ONT
- KOA
1 stop14h 15m
Delta
Mon 8/319:45 pm
KOA
- ONT
2 stops15h 29m
Delta
Deal found 5/10![Delta logo]()
$417
This Delta deal was found by Cheapflights users on 5/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:00 am
ONT
- KOA
2 stops14h 35m
Delta
Wed 9/29:45 pm
KOA
- ONT
2 stops15h 29m
Delta
Deal found 5/10![Delta logo]()
$422
This Delta deal was found by Cheapflights users on 5/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:20 am
ONT
- KOA
1 stop14h 15m
Delta
Tue 9/19:45 pm
KOA
- ONT
2 stops15h 29m
Delta
Deal found 5/10![Delta logo]()
$423
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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 9/2212:10 pm
ONT
- KOA
1 stop10h 17m
Multiple Airlines
Wed 9/236:00 am
KOA
- ONT
1 stop12h 20m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$424
Best flights from Ontario to Kailua-KonaDiscover carefully curated flight deals from Ontario to Kailua-Kona that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 16, 2026.
Discover carefully curated flight deals from Ontario to Kailua-Kona that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 16, 2026.
This Alaska Airlines deal was found by Cheapflights users on 5/11. 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 8/112:05 pm
ONT
- KOA
1 stop11h 05m
Alaska Airlines
Sun 8/169:19 pm
KOA
- ONT
1 stop10h 55m
Alaska Airlines
Deal found 5/11![Alaska Airlines logo]()
$417
This Southwest deal was found by Cheapflights users on 5/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/68:00 am
ONT
- KOA
1 stop9h 10m
Southwest
Tue 10/136:00 am
KOA
- ONT
1 stop11h 35m
Southwest
Deal found 5/10![Southwest logo]()
$425
This Alaska Airlines deal was found by Cheapflights users on 5/14. 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 7/139:11 am
ONT
- KOA
1 stop13h 20m
Multiple Airlines
Tue 7/286:00 am
KOA
- ONT
1 stop12h 45m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$425
This Delta deal was found by Cheapflights users on 5/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/76:00 am
ONT
- KOA
2 stops14h 51m
Delta
Fri 9/119:45 pm
KOA
- ONT
2 stops11h 44m
Delta
Deal found 5/15![Delta logo]()
$489
This United Airlines deal was found by Cheapflights users on 5/11. 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 8/131:56 pm
ONT
- KOA
1 stop8h 39m
United Airlines
Thu 8/2012:04 pm
KOA
- ONT
1 stop7h 55m
United Airlines
Deal found 5/11![United Airlines logo]()
$521
This Alaska Airlines deal was found by Cheapflights users on 5/13. 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 7/72:05 pm
ONT
- KOA
1 stop11h 05m
Multiple Airlines
Wed 7/298:31 am
KOA
- ONT
1 stop10h 14m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$430
This Alaska Airlines deal was found by Cheapflights users on 5/14. 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 7/72:05 pm
ONT
- KOA
1 stop11h 05m
Multiple Airlines
Tue 7/145:51 pm
KOA
- ONT
1 stop24h 54m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$431
This Alaska Airlines deal was found by Cheapflights users on 5/13. 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 8/32:05 pm
ONT
- KOA
1 stop11h 05m
Alaska Airlines
Sun 8/99:19 pm
KOA
- ONT
1 stop10h 55m
Alaska Airlines
Deal found 5/13![Alaska Airlines logo]()
$509
This Alaska Airlines deal was found by Cheapflights users on 5/14. 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 7/142:05 pm
ONT
- KOA
1 stop11h 05m
Multiple Airlines
Fri 7/176:00 am
KOA
- ONT
1 stop12h 45m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$480
This Alaska Airlines deal was found by Cheapflights users on 5/14. 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 9/227:10 am
ONT
- KOA
2 stops17h 40m
Multiple Airlines
Wed 9/238:18 am
KOA
- ONT
1 stop10h 02m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$484
This Alaska Airlines deal was found by Cheapflights users on 5/14. 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 6/299:11 am
ONT
- KOA
1 stop9h 17m
Multiple Airlines
Mon 7/610:51 am
KOA
- ONT
1 stop7h 54m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$515
Last-minute flights from Ontario to Kailua-KonaDiscover last-minute flight deals from Ontario to Kailua-Kona. Data last updated May 16, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Kailua-Kona. Data last updated May 16, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 5/13. 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 6/36:00 am
ONT
- KOA
1 stop11h 40m
Alaska Airlines
Wed 6/1011:58 am
KOA
- ONT
1 stop8h 53m
Alaska Airlines
Deal found 5/13![Alaska Airlines logo]()
$457
This United Airlines deal was found by Cheapflights users on 5/11. 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 6/41:50 pm
ONT
- KOA
1 stop8h 41m
United Airlines
Thu 6/1110:50 pm
KOA
- ONT
1 stop10h 22m
United Airlines
Deal found 5/11![United Airlines logo]()
$441
This Alaska Airlines deal was found by Cheapflights users on 5/11. 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 6/412:04 pm
ONT
- KOA
1 stop9h 51m
Alaska Airlines
Tue 6/99:25 pm
KOA
- ONT
1 stop10h 49m
Alaska Airlines
Deal found 5/11![Alaska Airlines logo]()
$484
This SmartFares deal was found by Cheapflights users on 5/11. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/512:04 pm
ONT
- KOA
1 stop9h 51m
Alaska Airlines
Thu 6/119:19 pm
KOA
- ONT
1 stop10h 55m
Alaska Airlines
Deal found 5/11![Alaska Airlines logo]()
$487
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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 6/219:11 am
ONT
- KOA
1 stop13h 20m
Multiple Airlines
Tue 6/308:03 am
KOA
- ONT
1 stop12h 08m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$480
This Kiwi.com deal was found by Cheapflights users on 5/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/239:11 am
ONT
- KOA
1 stop12h 34m
Multiple Airlines
Mon 6/299:19 pm
KOA
- ONT
1 stop10h 55m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$474
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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 6/259:11 am
ONT
- KOA
1 stop9h 17m
Multiple Airlines
Thu 7/26:00 am
KOA
- ONT
1 stop12h 45m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$470
This CheapOair deal was found by Cheapflights users on 5/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/299:11 am
ONT
- KOA
1 stop7h 51m
Multiple Airlines
Mon 7/66:30 pm
KOA
- ONT
1 stop24h 15m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$471
This Alaska Airlines deal was found by Cheapflights users on 5/14. 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 6/309:11 am
ONT
- KOA
1 stop9h 50m
Multiple Airlines
Wed 7/86:00 am
KOA
- ONT
1 stop12h 45m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$425
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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 6/309:11 am
ONT
- KOA
1 stop9h 50m
Multiple Airlines
Tue 7/78:45 pm
KOA
- ONT
1 stop22h 00m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$426
One-way flights from Ontario to Kailua-KonaSearch for one-way flight options from Ontario to Kailua-Kona. Find affordable one-way fares based on user searches. Data last updated May 16, 2026.
Search for one-way flight options from Ontario to Kailua-Kona. Find affordable one-way fares based on user searches. Data last updated May 16, 2026.
This Trip.com deal was found by Cheapflights users on 5/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/179:11 am
ONT
- KOA
1 stop9h 50m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$189
This Trip.com deal was found by Cheapflights users on 5/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/112:05 pm
ONT
- KOA
1 stop11h 05m
Alaska Airlines
Deal found 5/13![Alaska Airlines logo]()
$192
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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 8/189:11 am
ONT
- KOA
1 stop24h 34m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$196
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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 6/289:11 am
ONT
- KOA
1 stop13h 20m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$213
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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 7/72:05 pm
ONT
- KOA
1 stop11h 05m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 5/11. 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.
Sat 8/12:05 pm
ONT
- KOA
1 stop11h 05m
Alaska Airlines
Deal found 5/11![Alaska Airlines logo]()
$223
This Southwest deal was found by Cheapflights users on 5/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:00 am
ONT
- KOA
1 stop13h 05m
Southwest
Deal found 5/10![Southwest logo]()
$248
This United Airlines deal was found by Cheapflights users on 5/12. 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.
Wed 8/196:00 am
ONT
- KOA
1 stop7h 49m
United Airlines
Deal found 5/12![United Airlines logo]()
$249
This Alaska Airlines deal was found by Cheapflights users on 5/14. 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 9/227:20 am
ONT
- KOA
1 stop13h 57m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$250
This Alaska Airlines deal was found by Cheapflights users on 5/11. 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.
Sat 7/252:05 pm
ONT
- KOA
1 stop11h 05m
Alaska Airlines
Deal found 5/11![Alaska Airlines logo]()
$252
Find flight deals from Ontario to Kailua-Kona
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Kailua-Kona (KOA). 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 May 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $378 (Alaska Airlines) |
One-way from | $189 (Trip.com) |
Popular in | June |
Cheapest in | January |
Average price | $412 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Kailua-Kona 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 May 16, 2026.
Use the filters below to find and compare flights from Ontario to Kailua-Kona that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Tue 8/11
2:05 pm-10:10 pm
1 stop11h 05m
Kona Intl
Sun 8/16
9:19 pm-11:14 am
1 stop10h 55m
$417
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Tue 10/6
8:00 am-2:10 pm
1 stop9h 10m
Kona Intl
Tue 10/13
6:00 am-8:35 pm
1 stop11h 35m
$425
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Mon 7/13
9:11 am-7:31 pm
1 stop13h 20m
Kona Intl
Tue 7/28
6:00 am-9:45 pm
1 stop12h 45m
$425
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Tue 7/7
2:05 pm-10:10 pm
1 stop11h 05m
Kona Intl
Wed 7/29
8:31 am-9:45 pm
1 stop10h 14m
$430
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Tue 7/7
2:05 pm-10:10 pm
1 stop11h 05m
Kona Intl
Tue 7/14
5:51 pm-9:45 pm
1 stop24h 54m
$431
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Tue 7/14
2:05 pm-10:10 pm
1 stop11h 05m
Kona Intl
Fri 7/17
6:00 am-9:45 pm
1 stop12h 45m
$480
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Tue 9/22
7:10 am-9:50 pm
2 stops17h 40m
Kona Intl
Wed 9/23
8:18 am-9:20 pm
1 stop10h 02m
$484
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Mon 9/7
6:00 am-5:51 pm
2 stops14h 51m
Kona Intl
Fri 9/11
9:45 pm-12:29 pm
2 stops11h 44m
$489
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Mon 8/3
2:05 pm-10:10 pm
1 stop11h 05m
Kona Intl
Sun 8/9
9:19 pm-11:14 am
1 stop10h 55m
$509
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Mon 6/29
9:11 am-3:28 pm
1 stop9h 17m
Kona Intl
Mon 7/6
10:51 am-9:45 pm
1 stop7h 54m
$515
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from Ontario to Kailua-Kona
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 Kailua-Kona in May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Ontario-Kailua-Kona flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Kailua-Kona flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Kailua-Kona flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Kailua-Kona 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-Kailua-Kona 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 Kailua-Kona
Have a flexible travel schedule? Discover the best time to fly to Kailua-Kona from Ontario with our price prediction graph.
ONT-KOA
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 Kailua-Kona
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How far ahead should I book a flight from Ontario to Kailua-Kona?
To ensure you get the cheapest price possible for a flight from Ontario to Kailua-Kona, you should look to book at least 64 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Ontario to Kailua-Kona?
Currently, January is the cheapest month in which you can book a flight from Ontario to Kailua-Kona (average of $369). Flying from Ontario to Kailua-Kona in June is currently the most expensive (average of $704). 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.
How much does it cost to fly round-trip from Ontario to Kailua-Kona?
What’s the top layover airport for flights from Ontario to Kailua-Kona?
Share of 1-stop round-trip flights from Ontario to Kailua-Kona chosen by Cheapflights users in the past 12 months, using the same layover each way.
San Francisco (SFO) – chosen by Cheapflights users on 50% of 1-stop itineraries from Ontario to Kailua-Kona on Cheapflights.
What’s the cheapest layover airport for flights from Ontario to Kailua-Kona?
Average round-trip fare for 1-stop flights from Ontario to Kailua-Kona, chosen by Cheapflights users in the past 12 months, with the same layover each way.
San Francisco (SFO) is the most affordable 1-stop option, with an average round-trip price of $477.
What’s the fastest layover option from Ontario to Kailua-Kona?
Shortest average travel time for 1-stop one-way flights from Ontario to Kailua-Kona, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via San Francisco (SFO) have the shortest average one-way travel time for 1-stop routes: 7h 47m.
Which airport typically offers the quickest layover for flights from Ontario to Kailua-Kona?
Average layover duration for 1-stop one-way flights from Ontario to Kailua-Kona, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via San Francisco (SFO) offer the fastest connection on this route, with an average layover time of 0h 50m.
Reviews of airlines servicing Kailua-Kona
Get insights into the airlines that provide service to Kailua-Kona. 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 Kailua-Kona. Reviews last updated May 16, 2026.
Peruse reviews from past customers who have flown with Southwest,Alaska Airlines, andDelta from Ontario to Kailua-Kona to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Related info for your journey
Find useful and relevant information for your journey from Ontario to Kailua-Kona. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Other flights to Kailua-Kona
Explore flights to Kailua-Kona departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on May 16, 2026.
Ontario and Kailua-Kona flights
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Top 4 airlines flying from Ontario to Kailua-Kona
Discover the top 4 airlines that operate flights from Ontario to Kailua-Kona. 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 May 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$154 | Average$422 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$317 | Average$504 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$335 | Average$426 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$381 | Average$529 | FlexibilityNo cancel fee | On-time63% |