$164+ 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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — KOA
Apr 16 — Apr 231
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 March 17, 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 March 17, 2026.
This Alaska Airlines deal was found by Cheapflights users on 3/16. 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 4/2910:39 am
ONT
- KOA
1 stop12h 13m
Alaska Airlines
Wed 5/610:36 am
KOA
- ONT
1 stop10h 12m
Alaska Airlines
Deal found 3/16![Alaska Airlines logo]()
$332
This Delta deal was found by Cheapflights users on 3/12. 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.
Mon 4/2711:53 am
ONT
- KOA
1 stop10h 10m
Delta
Thu 5/78:55 pm
KOA
- ONT
1 stop11h 17m
Delta
Deal found 3/12![Delta logo]()
$336
This Delta deal was found by Cheapflights users on 3/12. 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.
Wed 5/66:00 am
ONT
- KOA
2 stops16h 03m
Delta
Wed 5/138:55 pm
KOA
- ONT
1 stop12h 40m
Delta
Deal found 3/12![Delta logo]()
$338
This Delta deal was found by Cheapflights users on 3/12. 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.
Mon 5/47:00 am
ONT
- KOA
1 stop15h 03m
Delta
Mon 5/118:55 pm
KOA
- ONT
2 stops16h 22m
Delta
Deal found 3/12![Delta logo]()
$340
This Delta deal was found by Cheapflights users on 3/12. 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.
Mon 4/276:00 am
ONT
- KOA
2 stops16h 03m
Delta
Wed 5/68:50 pm
KOA
- ONT
2 stops12h 29m
Delta
Deal found 3/12![Delta logo]()
$347
This Delta deal was found by Cheapflights users on 3/12. 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.
Mon 4/2711:53 am
ONT
- KOA
1 stop10h 10m
Delta
Fri 5/88:55 pm
KOA
- ONT
2 stops16h 22m
Delta
Deal found 3/12![Delta logo]()
$350
This Delta deal was found by Cheapflights users on 3/15. 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 4/2711:53 am
ONT
- KOA
1 stop10h 10m
Delta
Mon 5/48:50 pm
KOA
- ONT
1 stop11h 23m
Delta
Deal found 3/15![Delta logo]()
$351
This Delta deal was found by Cheapflights users on 3/12. 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.
Tue 5/57:00 am
ONT
- KOA
1 stop15h 03m
Delta
Wed 5/138:55 pm
KOA
- ONT
1 stop12h 40m
Delta
Deal found 3/12![Delta logo]()
$352
This Delta deal was found by Cheapflights users on 3/13. 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.
Tue 5/56:00 am
ONT
- KOA
2 stops16h 03m
Delta
Thu 5/78:55 pm
KOA
- ONT
1 stop11h 17m
Delta
Deal found 3/13![Delta logo]()
$358
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 March 17, 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 March 17, 2026.
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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 4/288:30 am
ONT
- KOA
1 stop10h 42m
Multiple Airlines
Wed 4/294:00 pm
KOA
- ONT
1 stop26h 10m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$362
This Delta deal was found by Cheapflights users on 3/12. 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.
Wed 5/66:00 am
ONT
- KOA
2 stops16h 03m
Delta
Mon 5/118:55 pm
KOA
- ONT
2 stops16h 22m
Delta
Deal found 3/12![Delta logo]()
$365
This United Airlines deal was found by Cheapflights users on 3/17. 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.
Sun 4/126:00 am
ONT
- KOA
1 stop7h 47m
United Airlines
Thu 4/1610:48 pm
KOA
- ONT
1 stop8h 08m
United Airlines
Deal found 3/17![United Airlines logo]()
$396
This Alaska Airlines deal was found by Cheapflights users on 3/15. 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.
Wed 8/1212:02 pm
ONT
- KOA
1 stop10h 06m
Alaska Airlines
Wed 8/199:30 pm
KOA
- ONT
1 stop10h 39m
Alaska Airlines
Deal found 3/15![Alaska Airlines logo]()
$433
This Southwest deal was found by Cheapflights users on 3/13. 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.
Fri 4/105:30 am
ONT
- KOA
1 stop10h 45m
Southwest
Tue 4/216:05 am
KOA
- ONT
2 stops10h 30m
Southwest
Deal found 3/13![Southwest logo]()
$445
This Delta deal was found by Cheapflights users on 3/12. 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.
Tue 5/57:00 am
ONT
- KOA
1 stop15h 03m
Delta
Sun 5/108:55 pm
KOA
- ONT
1 stop11h 17m
Delta
Deal found 3/12![Delta logo]()
$379
This Delta deal was found by Cheapflights users on 3/16. 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.
Sat 4/186:00 am
ONT
- KOA
2 stops16h 03m
Delta
Wed 4/298:50 pm
KOA
- ONT
1 stop13h 49m
Delta
Deal found 3/16![Delta logo]()
$380
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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.
Thu 9/38:00 am
ONT
- KOA
1 stop16h 53m
Multiple Airlines
Thu 9/108:00 am
KOA
- ONT
1 stop11h 39m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$448
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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.
Sat 5/93:26 pm
ONT
- KOA
2 stops21h 10m
Alaska Airlines
Mon 5/1110:36 am
KOA
- ONT
1 stop10h 12m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$451
This United Airlines deal was found by Cheapflights users on 3/12. 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 4/291:27 pm
ONT
- KOA
1 stop9h 15m
United Airlines
Wed 5/611:04 pm
KOA
- ONT
1 stop7h 37m
United Airlines
Deal found 3/12![United Airlines logo]()
$452
This Delta deal was found by Cheapflights users on 3/12. 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.
Tue 9/17:00 am
ONT
- KOA
1 stop13h 51m
Delta
Mon 9/79:45 pm
KOA
- ONT
2 stops15h 29m
Delta
Deal found 3/12![Delta logo]()
$451
Last-minute flights from Ontario to Kailua-KonaDiscover last-minute flight deals from Ontario to Kailua-Kona. Data last updated March 17, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Kailua-Kona. Data last updated March 17, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 3/13. 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.
Tue 4/146:40 am
ONT
- KOA
1 stop8h 45m
Southwest
Thu 4/238:25 pm
KOA
- ONT
1 stop8h 55m
Southwest
Deal found 3/13![Southwest logo]()
$352
This Delta deal was found by Cheapflights users on 3/16. 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 4/156:00 am
ONT
- KOA
2 stops16h 03m
Delta
Wed 4/298:50 pm
KOA
- ONT
1 stop13h 49m
Delta
Deal found 3/16![Delta logo]()
$358
This Delta deal was found by Cheapflights users on 3/16. 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 4/156:00 am
ONT
- KOA
2 stops16h 03m
Delta
Mon 4/278:50 pm
KOA
- ONT
1 stop11h 23m
Delta
Deal found 3/16![Delta logo]()
$360
This Delta deal was found by Cheapflights users on 3/12. 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.
Wed 4/157:00 am
ONT
- KOA
1 stop15h 03m
Delta
Thu 4/238:50 pm
KOA
- ONT
1 stop13h 49m
Delta
Deal found 3/12![Delta logo]()
$361
This Delta deal was found by Cheapflights users on 3/16. 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.
Thu 4/166:00 am
ONT
- KOA
2 stops16h 03m
Delta
Mon 4/278:50 pm
KOA
- ONT
1 stop11h 23m
Delta
Deal found 3/16![Delta logo]()
$362
This Delta deal was found by Cheapflights users on 3/12. 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.
Mon 4/2711:53 am
ONT
- KOA
1 stop10h 10m
Delta
Thu 5/78:55 pm
KOA
- ONT
1 stop11h 17m
Delta
Deal found 3/12![Delta logo]()
$336
This Delta deal was found by Cheapflights users on 3/12. 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.
Mon 4/276:00 am
ONT
- KOA
2 stops16h 03m
Delta
Wed 5/68:50 pm
KOA
- ONT
2 stops12h 29m
Delta
Deal found 3/12![Delta logo]()
$347
This Delta deal was found by Cheapflights users on 3/12. 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.
Mon 4/2711:53 am
ONT
- KOA
1 stop10h 10m
Delta
Fri 5/88:55 pm
KOA
- ONT
2 stops16h 22m
Delta
Deal found 3/12![Delta logo]()
$350
This Delta deal was found by Cheapflights users on 3/15. 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 4/2711:53 am
ONT
- KOA
1 stop10h 10m
Delta
Mon 5/48:50 pm
KOA
- ONT
1 stop11h 23m
Delta
Deal found 3/15![Delta logo]()
$351
This Alaska Airlines deal was found by Cheapflights users on 3/16. 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 4/2910:39 am
ONT
- KOA
1 stop12h 13m
Alaska Airlines
Wed 5/610:36 am
KOA
- ONT
1 stop10h 12m
Alaska Airlines
Deal found 3/16![Alaska Airlines logo]()
$332
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 March 17, 2026.
Search for one-way flight options from Ontario to Kailua-Kona. Find affordable one-way fares based on user searches. Data last updated March 17, 2026.
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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 5/118:30 am
ONT
- KOA
1 stop7h 44m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$164
This United Airlines deal was found by Cheapflights users on 3/16. 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 4/81:27 pm
ONT
- KOA
1 stop9h 15m
United Airlines
Deal found 3/16![United Airlines logo]()
$166
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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 5/510:39 am
ONT
- KOA
1 stop12h 13m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$168
This Delta deal was found by Cheapflights users on 3/16. 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 4/227:00 am
ONT
- KOA
1 stop15h 03m
Delta
Deal found 3/16![Delta logo]()
$176
This Delta deal was found by Cheapflights users on 3/16. 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 4/86:00 am
ONT
- KOA
2 stops15h 38m
Delta
Deal found 3/16![Delta logo]()
$177
This Delta deal was found by Cheapflights users on 3/13. 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 5/47:00 am
ONT
- KOA
1 stop15h 03m
Delta
Deal found 3/13![Delta logo]()
$178
This Delta deal was found by Cheapflights users on 3/12. 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.
Wed 5/66:00 am
ONT
- KOA
2 stops16h 03m
Delta
Deal found 3/12![Delta logo]()
$179
This United Airlines deal was found by Cheapflights users on 3/16. 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 4/221:27 pm
ONT
- KOA
1 stop9h 15m
United Airlines
Deal found 3/16![United Airlines logo]()
$186
This Delta deal was found by Cheapflights users on 3/13. 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 4/66:00 am
ONT
- KOA
2 stops15h 38m
Delta
Deal found 3/13![Delta logo]()
$189
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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.
Sun 4/128:32 am
ONT
- KOA
1 stop16h 44m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$194
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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 4/2110:33 am
ONT
- KOA
1 stop9h 58m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$202
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 March 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $332 (Delta) |
One-way from | $164 (Alaska Airlines) |
Popular in | June |
Cheapest in | January |
Average price | $571 |
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 March 17, 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 4/28
8:30 am-4:12 pm
1 stop10h 42m
Kona Intl
Wed 4/29
4:00 pm-9:10 pm
1 stop26h 10m
$362
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Wed 5/6
6:00 am-7:03 pm
2 stops16h 03m
Kona Intl
Mon 5/11
8:55 pm-4:17 pm
2 stops16h 22m
$365
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Tue 5/5
7:00 am-7:03 pm
1 stop15h 03m
Kona Intl
Sun 5/10
8:55 pm-11:12 am
1 stop11h 17m
$379
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Sat 4/18
6:00 am-7:03 pm
2 stops16h 03m
Kona Intl
Wed 4/29
8:50 pm-1:39 pm
1 stop13h 49m
$380
Quickest round-trip
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Sun 4/12
6:00 am-10:47 am
1 stop7h 47m
Kona Intl
Thu 4/16
10:48 pm-9:56 am
1 stop8h 08m
$396
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Wed 8/12
12:02 pm-7:08 pm
1 stop10h 06m
Kona Intl
Wed 8/19
9:30 pm-11:09 am
1 stop10h 39m
$433
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Fri 4/10
5:30 am-1:15 pm
1 stop10h 45m
Kona Intl
Tue 4/21
6:05 am-7:35 pm
2 stops10h 30m
$445
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Thu 9/3
8:00 am-9:53 pm
1 stop16h 53m
Kona Intl
Thu 9/10
8:00 am-10:39 pm
1 stop11h 39m
$448
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Sat 5/9
3:26 pm-9:36 am
2 stops21h 10m
Kona Intl
Mon 5/11
10:36 am-11:48 pm
1 stop10h 12m
$451
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Tue 9/1
7:00 am-5:51 pm
1 stop13h 51m
Kona Intl
Mon 9/7
9:45 pm-4:14 pm
2 stops15h 29m
$451
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 March.
| 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 March 13, 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 $118). Flying from Ontario to Kailua-Kona in June is currently the most expensive (average of $274). 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’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.
Seattle (SEA) – 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.
Seattle (SEA) is the most affordable 1-stop option, with an average round-trip price of $487.
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 Las Vegas (LAS) have the shortest average one-way travel time for 1-stop routes: 8h 00m.
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 Las Vegas (LAS) offer the fastest connection on this route, with an average layover time of 2h 18m.
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 March 17, 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.
Entertainment
7.5
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Entertainment
7.5
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Entertainment
7.5
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Entertainment
7.5
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Entertainment
7.5
Crew
8.6
Comfort
8.0
Overall
8.0
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 March 17, 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 March 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$154 | Average$364 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$277 | Average$464 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$317 | Average$501 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$381 | Average$591 | FlexibilityNo cancel fee | On-time63% |