$191+ 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 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — KOA
mai 15 — mai 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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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 abril 15, 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 abril 15, 2026.
This United Airlines deal was found by Cheapflights users on 4/12. 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.
dom 5/106:00 am
ONT
- KOA
1 stop7h 47m
United Airlines
ter 5/1911:04 pm
KOA
- ONT
1 stop7h 37m
United Airlines
Deal found 4/12![United Airlines logo]()
$390
This Delta deal was found by Cheapflights users on 4/13. 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.
ter 5/511:53 am
ONT
- KOA
1 stop10h 10m
Delta
qui 5/79:55 pm
KOA
- ONT
2 stops15h 22m
Delta
Deal found 4/13![Delta logo]()
$396
This United Airlines deal was found by Cheapflights users on 4/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 5/136:00 am
ONT
- KOA
1 stop7h 47m
United Airlines
qua 5/2012:02 pm
KOA
- ONT
1 stop7h 57m
United Airlines
Deal found 4/13![United Airlines logo]()
$407
This Delta deal was found by Cheapflights users on 4/13. 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.
ter 5/126:45 am
ONT
- KOA
1 stop13h 52m
Delta
dom 5/178:50 pm
KOA
- ONT
1 stop11h 22m
Delta
Deal found 4/13![Delta logo]()
$408
This Delta deal was found by Cheapflights users on 4/13. 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.
seg 5/411:53 am
ONT
- KOA
1 stop10h 10m
Delta
seg 5/118:50 pm
KOA
- ONT
1 stop11h 22m
Delta
Deal found 4/13![Delta logo]()
$410
This Southwest deal was found by Cheapflights users on 4/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 5/136:15 am
ONT
- KOA
2 stops11h 15m
Southwest
qua 5/208:25 pm
KOA
- ONT
1 stop8h 55m
Southwest
Deal found 4/13![Southwest logo]()
$411
This Delta deal was found by Cheapflights users on 4/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 5/126:45 am
ONT
- KOA
1 stop13h 52m
Delta
ter 5/198:50 pm
KOA
- ONT
1 stop12h 45m
Delta
Deal found 4/14![Delta logo]()
$413
This Delta deal was found by Cheapflights users on 4/13. 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.
ter 5/126:45 am
ONT
- KOA
1 stop13h 52m
Delta
sex 5/228:50 pm
KOA
- ONT
2 stops12h 29m
Delta
Deal found 4/13![Delta logo]()
$414
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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.
ter 5/510:39 am
ONT
- KOA
1 stop12h 13m
Multiple Airlines
qua 5/66:00 am
KOA
- ONT
1 stop12h 10m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$415
This Delta deal was found by Cheapflights users on 4/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 5/511:53 am
ONT
- KOA
1 stop10h 10m
Delta
dom 5/108:50 pm
KOA
- ONT
1 stop11h 22m
Delta
Deal found 4/14![Delta logo]()
$418
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 abril 15, 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 abril 15, 2026.
This Delta deal was found by Cheapflights users on 4/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 5/56:00 am
ONT
- KOA
2 stops16h 03m
Delta
qui 5/78:50 pm
KOA
- ONT
2 stops16h 27m
Delta
Deal found 4/14![Delta logo]()
$401
This Alaska Airlines deal was found by Cheapflights users on 4/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 8/99:11 am
ONT
- KOA
1 stop12h 05m
Multiple Airlines
sex 8/148:03 am
KOA
- ONT
1 stop12h 08m
Multiple Airlines
Deal found 4/10![Multiple Airlines logo]()
$508
This Delta deal was found by Cheapflights users on 4/13. 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.
dom 5/106:45 am
ONT
- KOA
1 stop13h 52m
Delta
sex 7/38:50 pm
KOA
- ONT
2 stops16h 52m
Delta
Deal found 4/13![Delta logo]()
$432
This Delta deal was found by Cheapflights users on 4/12. 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.
qui 8/206:00 am
ONT
- KOA
2 stops15h 34m
Delta
qua 8/269:45 pm
KOA
- ONT
2 stops15h 29m
Delta
Deal found 4/12![Delta logo]()
$437
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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.
seg 9/1412:10 pm
ONT
- KOA
1 stop12h 07m
Multiple Airlines
sex 9/1810:19 am
KOA
- ONT
1 stop8h 01m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$511
This Delta deal was found by Cheapflights users on 4/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 8/216:00 am
ONT
- KOA
2 stops15h 34m
Delta
qua 8/269:45 pm
KOA
- ONT
2 stops15h 29m
Delta
Deal found 4/11![Delta logo]()
$437
This Delta deal was found by Cheapflights users on 4/13. 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.
sex 5/86:45 am
ONT
- KOA
1 stop13h 52m
Delta
ter 6/308:50 pm
KOA
- ONT
2 stops23h 55m
Delta
Deal found 4/13![Delta logo]()
$498
This Delta deal was found by Cheapflights users on 4/10. 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.
ter 10/67:00 am
ONT
- KOA
1 stop13h 54m
Delta
qui 10/229:45 pm
KOA
- ONT
2 stops15h 27m
Delta
Deal found 4/10![Delta logo]()
$501
This Delta deal was found by Cheapflights users on 4/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 7/156:20 am
ONT
- KOA
1 stop14h 15m
Delta
ter 7/219:16 pm
KOA
- ONT
2 stops16h 19m
Delta
Deal found 4/14![Delta logo]()
$535
This Delta deal was found by Cheapflights users on 4/10. 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.
qua 7/155:16 pm
ONT
- KOA
2 stops27h 19m
Delta
qua 7/299:16 pm
KOA
- ONT
2 stops16h 19m
Delta
Deal found 4/10![Delta logo]()
$544
This Delta deal was found by Cheapflights users on 4/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 6/286:20 am
ONT
- KOA
1 stop14h 15m
Delta
seg 7/68:50 pm
KOA
- ONT
1 stop13h 12m
Delta
Deal found 4/14![Delta logo]()
$545
Last-minute flights from Ontario to Kailua-KonaDiscover last-minute flight deals from Ontario to Kailua-Kona. Data last updated abril 15, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Kailua-Kona. Data last updated abril 15, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 4/13. 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.
seg 5/411:53 am
ONT
- KOA
1 stop10h 10m
Delta
seg 5/118:50 pm
KOA
- ONT
1 stop11h 22m
Delta
Deal found 4/13![Delta logo]()
$410
This Delta deal was found by Cheapflights users on 4/13. 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.
ter 5/511:53 am
ONT
- KOA
1 stop10h 10m
Delta
qui 5/79:55 pm
KOA
- ONT
2 stops15h 22m
Delta
Deal found 4/13![Delta logo]()
$396
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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.
ter 5/510:39 am
ONT
- KOA
1 stop12h 13m
Multiple Airlines
qua 5/66:00 am
KOA
- ONT
1 stop12h 10m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$415
This Delta deal was found by Cheapflights users on 4/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 5/511:53 am
ONT
- KOA
1 stop10h 10m
Delta
dom 5/108:50 pm
KOA
- ONT
1 stop11h 22m
Delta
Deal found 4/14![Delta logo]()
$418
This United Airlines deal was found by Cheapflights users on 4/12. 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.
dom 5/106:00 am
ONT
- KOA
1 stop7h 47m
United Airlines
ter 5/1911:04 pm
KOA
- ONT
1 stop7h 37m
United Airlines
Deal found 4/12![United Airlines logo]()
$390
This Delta deal was found by Cheapflights users on 4/13. 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.
ter 5/126:45 am
ONT
- KOA
1 stop13h 52m
Delta
sex 5/228:50 pm
KOA
- ONT
1 stop11h 22m
Delta
Deal found 4/13![Delta logo]()
$408
This Delta deal was found by Cheapflights users on 4/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 5/126:45 am
ONT
- KOA
1 stop13h 52m
Delta
ter 5/198:50 pm
KOA
- ONT
1 stop12h 45m
Delta
Deal found 4/14![Delta logo]()
$413
This Delta deal was found by Cheapflights users on 4/13. 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.
ter 5/126:45 am
ONT
- KOA
1 stop13h 52m
Delta
sex 7/38:50 pm
KOA
- ONT
2 stops16h 52m
Delta
Deal found 4/13![Delta logo]()
$414
This United Airlines deal was found by Cheapflights users on 4/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 5/136:00 am
ONT
- KOA
1 stop7h 47m
United Airlines
qua 5/2012:02 pm
KOA
- ONT
1 stop7h 57m
United Airlines
Deal found 4/13![United Airlines logo]()
$407
This Southwest deal was found by Cheapflights users on 4/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 5/136:15 am
ONT
- KOA
2 stops11h 15m
Southwest
qua 5/208:25 pm
KOA
- ONT
1 stop8h 55m
Southwest
Deal found 4/13![Southwest logo]()
$411
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 abril 15, 2026.
Search for one-way flight options from Ontario to Kailua-Kona. Find affordable one-way fares based on user searches. Data last updated abril 15, 2026.
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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.
ter 5/199:40 am
ONT
- KOA
1 stop10h 43m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$191
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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.
ter 5/510:39 am
ONT
- KOA
1 stop12h 13m
Alaska Airlines
Deal found 4/14![Alaska Airlines logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 4/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 5/28:30 am
ONT
- KOA
1 stop13h 46m
Multiple Airlines
Deal found 4/10![Multiple Airlines logo]()
$208
This Delta deal was found by Cheapflights users on 4/10. 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.
dom 5/246:45 am
ONT
- KOA
1 stop13h 52m
Delta
Deal found 4/10![Delta logo]()
$213
This Alaska Airlines deal was found by Cheapflights users on 4/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 7/72:05 pm
ONT
- KOA
1 stop11h 05m
Alaska Airlines
Deal found 4/15![Alaska Airlines logo]()
$217
This Delta deal was found by Cheapflights users on 4/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 7/106:20 am
ONT
- KOA
1 stop14h 15m
Delta
Deal found 4/14![Delta logo]()
$218
This Delta deal was found by Cheapflights users on 4/15. 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.
qui 8/137:00 am
ONT
- KOA
1 stop13h 51m
Delta
Deal found 4/15![Delta logo]()
$223
This Alaska Airlines deal was found by Cheapflights users on 4/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 5/1210:39 am
ONT
- KOA
1 stop12h 13m
Alaska Airlines
Deal found 4/10![Alaska Airlines logo]()
$230
This Southwest deal was found by Cheapflights users on 4/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 10/18:00 am
ONT
- KOA
1 stop13h 05m
Southwest
Deal found 4/13![Southwest logo]()
$235
This flugladen.de deal was found by Cheapflights users on 4/15. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 8/317:20 am
ONT
- KOA
1 stop8h 23m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$248
This United Airlines deal was found by Cheapflights users on 4/12. 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.
dom 5/31:30 pm
ONT
- KOA
1 stop9h 20m
United Airlines
Deal found 4/12![United Airlines logo]()
$250
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 abril 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $390 (United Airlines) |
One-way from | $191 (Alaska Airlines) |
Popular in | June |
Cheapest in | January |
Average price | $465 |
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 abril 15, 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
ter 5/5
6:00 am-7:03 pm
2 stops16h 03m
Kona Intl
qui 5/7
8:50 pm-4:17 pm
2 stops16h 27m
$401
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
dom 5/10
6:45 am-5:37 pm
1 stop13h 52m
Kona Intl
sex 7/3
8:50 pm-4:42 pm
2 stops16h 52m
$432
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
qui 8/20
6:00 am-6:34 pm
2 stops15h 34m
Kona Intl
qua 8/26
9:45 pm-4:14 pm
2 stops15h 29m
$437
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
sex 8/21
6:00 am-6:34 pm
2 stops15h 34m
Kona Intl
qua 8/26
9:45 pm-4:14 pm
2 stops15h 29m
$437
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
sex 5/8
6:45 am-5:37 pm
1 stop13h 52m
Kona Intl
ter 6/30
8:50 pm-11:45 pm
2 stops23h 55m
$498
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
ter 10/6
7:00 am-5:54 pm
1 stop13h 54m
Kona Intl
qui 10/22
9:45 pm-4:12 pm
2 stops15h 27m
$501
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
dom 8/9
9:11 am-6:16 pm
1 stop12h 05m
Kona Intl
sex 8/14
8:03 am-11:11 pm
1 stop12h 08m
$508
Quickest round-trip
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
seg 9/14
12:10 pm-9:17 pm
1 stop12h 07m
Kona Intl
sex 9/18
10:19 am-9:20 pm
1 stop8h 01m
$511
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
qua 7/15
6:20 am-5:35 pm
1 stop14h 15m
Kona Intl
ter 7/21
9:16 pm-4:35 pm
2 stops16h 19m
$535
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
qua 7/15
5:16 pm-5:35 pm
2 stops27h 19m
Kona Intl
qua 7/29
9:16 pm-4:35 pm
2 stops16h 19m
$544
Showing 1-10 of 22 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 April.
| 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?
Use this chart to determine the optimal time to book a round-trip flight from Ontario to Kailua-Kona. Price data was last updated on April 10, 2026.
To ensure you get the cheapest price possible for a flight from Ontario to Kailua-Kona, you should look to book at least 65 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, May is the cheapest month in which you can book a flight from Ontario to Kailua-Kona (average of $117). Flying from Ontario to Kailua-Kona in June is currently the most expensive (average of $277). 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 33% 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 abril 15, 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.
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
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 abril 15, 2026.
Ontario and Kailua-Kona flights
Browse other Ontario and Kailua-Kona flight options. Last updated on abril 15, 2026.
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Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 abril 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$154 | Average$364 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$297 | Average$452 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$317 | Average$506 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$381 | Average$585 | FlexibilityNo cancel fee | On-time63% |