$172+ 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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — KOA
Aug 12 — Aug 191
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 July 13, 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 July 13, 2026.
This Southwest deal was found by Cheapflights users on 7/9. 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.
Wed 8/195:45 am
ONT
- KOA
1 stop9h 55m
Southwest
Wed 8/2610:00 am
KOA
- ONT
1 stop7h 05m
Southwest
Deal found 7/9![Southwest logo]()
$340
This Delta deal was found by Cheapflights users on 7/10. 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.
Wed 8/126:20 am
ONT
- KOA
1 stop14h 15m
Delta
Tue 8/188:42 pm
KOA
- ONT
1 stop11h 34m
Delta
Deal found 7/10![Delta logo]()
$344
This Southwest deal was found by Cheapflights users on 7/10. 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.
Wed 8/266:40 am
ONT
- KOA
2 stops10h 30m
Southwest
Wed 9/210:00 am
KOA
- ONT
1 stop7h 05m
Southwest
Deal found 7/10![Southwest logo]()
$346
This Delta deal was found by Cheapflights users on 7/8. 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 9/166:20 am
ONT
- KOA
1 stop14h 11m
Delta
Wed 9/238:50 pm
KOA
- ONT
2 stops12h 24m
Delta
Deal found 7/8![Delta logo]()
$350
This Delta deal was found by Cheapflights users on 7/9. 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
Wed 8/2610:05 pm
KOA
- ONT
2 stops11h 11m
Delta
Deal found 7/9![Delta logo]()
$355
This Priceline deal was found by Cheapflights users on 7/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:11 am
ONT
- KOA
1 stop9h 50m
Multiple Airlines
Thu 8/206:00 am
KOA
- ONT
1 stop13h 10m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$357
This Alaska Airlines deal was found by Cheapflights users on 7/9. 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 8/239:31 am
ONT
- KOA
1 stop25h 14m
Multiple Airlines
Thu 8/276:00 am
KOA
- ONT
1 stop13h 10m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$358
This Priceline deal was found by Cheapflights users on 7/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/269:31 am
ONT
- KOA
1 stop15h 19m
Multiple Airlines
Tue 9/110:25 pm
KOA
- ONT
1 stop9h 39m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$362
This Alaska Airlines deal was found by Cheapflights users on 7/10. 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.
Wed 10/142:13 pm
ONT
- KOA
1 stop9h 55m
Multiple Airlines
Wed 10/2111:47 am
KOA
- ONT
1 stop9h 06m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$366
This CheapOair deal was found by Cheapflights users on 7/9. 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.
Sat 9/1210:47 am
ONT
- KOA
1 stop27h 19m
Multiple Airlines
Wed 9/1610:25 pm
KOA
- ONT
1 stop9h 51m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$369
This Trip.com deal was found by Cheapflights users on 7/9. 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.
Thu 8/132:05 pm
ONT
- KOA
1 stop11h 05m
Multiple Airlines
Wed 8/196:00 am
KOA
- ONT
1 stop13h 10m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$370
This United Airlines deal was found by Cheapflights users on 7/9. 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.
Tue 10/131:52 pm
ONT
- KOA
1 stop10h 35m
United Airlines
Thu 10/2210:55 pm
KOA
- ONT
1 stop10h 23m
United Airlines
Deal found 7/9![United Airlines logo]()
$379
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 July 13, 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 July 13, 2026.
This Southwest deal was found by Cheapflights users on 7/9. 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.
Wed 8/195:45 am
ONT
- KOA
1 stop9h 55m
Southwest
Wed 8/2610:00 am
KOA
- ONT
1 stop7h 05m
Southwest
Deal found 7/9![Southwest logo]()
$340
This Alaska Airlines deal was found by Cheapflights users on 7/10. 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.
Wed 10/142:13 pm
ONT
- KOA
1 stop9h 55m
Multiple Airlines
Thu 10/2211:47 am
KOA
- ONT
1 stop9h 06m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$366
This United Airlines deal was found by Cheapflights users on 7/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:08 am
ONT
- KOA
1 stop7h 41m
United Airlines
Thu 9/310:50 pm
KOA
- ONT
1 stop10h 22m
United Airlines
Deal found 7/10![United Airlines logo]()
$404
This Alaska Airlines deal was found by Cheapflights users on 7/9. 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 8/812:04 pm
ONT
- KOA
1 stop10h 01m
Alaska Airlines
Fri 8/149:19 pm
KOA
- ONT
1 stop10h 55m
Alaska Airlines
Deal found 7/9![Alaska Airlines logo]()
$476
This Alaska Airlines deal was found by Cheapflights users on 7/12. 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 12/19:00 am
ONT
- KOA
1 stop14h 50m
Multiple Airlines
Tue 12/812:18 pm
KOA
- ONT
1 stop7h 10m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$425
This Southwest deal was found by Cheapflights users on 7/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:00 am
ONT
- KOA
1 stop13h 05m
Southwest
Thu 8/208:00 am
KOA
- ONT
2 stops11h 10m
Southwest
Deal found 7/12![Southwest logo]()
$452
This United Airlines deal was found by Cheapflights users on 7/9. 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.
Mon 11/21:52 pm
ONT
- KOA
1 stop8h 40m
United Airlines
Wed 11/1111:59 pm
KOA
- ONT
1 stop10h 02m
United Airlines
Deal found 7/9![United Airlines logo]()
$454
This Alaska Airlines deal was found by Cheapflights users on 7/11. 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 9/56:05 pm
ONT
- KOA
1 stop20h 01m
Multiple Airlines
Wed 9/912:51 pm
KOA
- ONT
2 stops18h 00m
Multiple Airlines
Deal found 7/11![Multiple Airlines logo]()
$455
This Southwest deal was found by Cheapflights users on 7/9. 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.
Thu 9/105:40 am
ONT
- KOA
2 stops11h 30m
Southwest
Sun 9/138:00 am
KOA
- ONT
1 stop9h 10m
Southwest
Deal found 7/9![Southwest logo]()
$485
This United Airlines deal was found by Cheapflights users on 7/8. 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 9/244:03 pm
ONT
- KOA
1 stop8h 24m
United Airlines
Mon 9/2810:55 pm
KOA
- ONT
1 stop8h 28m
United Airlines
Deal found 7/8![United Airlines logo]()
$504
Last-minute flights from Ontario to Kailua-KonaDiscover last-minute flight deals from Ontario to Kailua-Kona. Data last updated July 13, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Kailua-Kona. Data last updated July 13, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/10. 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.
Wed 8/126:20 am
ONT
- KOA
1 stop14h 15m
Delta
Tue 8/188:42 pm
KOA
- ONT
1 stop11h 34m
Delta
Deal found 7/10![Delta logo]()
$344
This Trip.com deal was found by Cheapflights users on 7/9. 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.
Thu 8/132:05 pm
ONT
- KOA
1 stop11h 05m
Multiple Airlines
Wed 8/196:00 am
KOA
- ONT
1 stop13h 10m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$370
This Priceline deal was found by Cheapflights users on 7/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:11 am
ONT
- KOA
1 stop9h 50m
Multiple Airlines
Thu 8/206:00 am
KOA
- ONT
1 stop13h 10m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$357
This Southwest deal was found by Cheapflights users on 7/9. 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.
Wed 8/195:45 am
ONT
- KOA
1 stop9h 55m
Southwest
Wed 8/2610:00 am
KOA
- ONT
1 stop7h 05m
Southwest
Deal found 7/9![Southwest logo]()
$340
This Delta deal was found by Cheapflights users on 7/9. 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
Wed 8/268:42 pm
KOA
- ONT
1 stop11h 34m
Delta
Deal found 7/9![Delta logo]()
$350
This Booking.com deal was found by Cheapflights users on 7/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/199:31 am
ONT
- KOA
1 stop15h 19m
Multiple Airlines
Mon 8/243:17 pm
KOA
- ONT
1 stop27h 53m
Multiple Airlines
Deal found 7/11![Multiple Airlines logo]()
$392
This Alaska Airlines deal was found by Cheapflights users on 7/9. 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 8/239:31 am
ONT
- KOA
1 stop25h 14m
Multiple Airlines
Thu 8/276:00 am
KOA
- ONT
1 stop13h 10m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$358
This Priceline deal was found by Cheapflights users on 7/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/239:31 am
ONT
- KOA
1 stop11h 46m
Multiple Airlines
Wed 9/28:18 am
KOA
- ONT
1 stop10h 52m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$391
This Southwest deal was found by Cheapflights users on 7/10. 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.
Wed 8/266:40 am
ONT
- KOA
2 stops10h 30m
Southwest
Wed 9/210:00 am
KOA
- ONT
1 stop7h 05m
Southwest
Deal found 7/10![Southwest logo]()
$346
This Priceline deal was found by Cheapflights users on 7/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/269:31 am
ONT
- KOA
1 stop15h 19m
Multiple Airlines
Tue 9/110:25 pm
KOA
- ONT
1 stop9h 39m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$362
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 July 13, 2026.
Search for one-way flight options from Ontario to Kailua-Kona. Find affordable one-way fares based on user searches. Data last updated July 13, 2026.
This United Airlines deal was found by Cheapflights users on 7/8. 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 8/236:08 am
ONT
- KOA
1 stop9h 40m
United Airlines
Deal found 7/8![United Airlines logo]()
$172
This Booking.com deal was found by Cheapflights users on 7/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/239:31 am
ONT
- KOA
1 stop11h 46m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$179
This Priceline deal was found by Cheapflights users on 7/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2511:13 am
ONT
- KOA
1 stop12h 55m
Alaska Airlines
Deal found 7/9![Alaska Airlines logo]()
$183
This Booking.com deal was found by Cheapflights users on 7/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1610:54 am
ONT
- KOA
1 stop27h 01m
Alaska Airlines
Deal found 7/9![Alaska Airlines logo]()
$192
This Priceline deal was found by Cheapflights users on 7/8. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/259:31 am
ONT
- KOA
1 stop11h 46m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$210
This Priceline deal was found by Cheapflights users on 7/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:20 am
ONT
- KOA
1 stop10h 42m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$213
This Priceline deal was found by Cheapflights users on 7/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1612:12 pm
ONT
- KOA
1 stop10h 15m
Alaska Airlines
Deal found 7/9![Alaska Airlines logo]()
$214
This Alaska Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/19:00 am
ONT
- KOA
1 stop14h 50m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$215
This Alaska Airlines deal was found by Cheapflights users on 7/8. 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 8/309:31 am
ONT
- KOA
1 stop28h 30m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$216
This Booking.com deal was found by Cheapflights users on 7/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/175:30 pm
ONT
- KOA
1 stop20h 02m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$217
This Priceline deal was found by Cheapflights users on 7/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:00 am
ONT
- KOA
1 stop10h 06m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$218
This Booking.com deal was found by Cheapflights users on 7/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:05 pm
ONT
- KOA
1 stop20h 01m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$219
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 July 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $340 (Southwest) |
One-way from | $172 (United Airlines) |
Popular in | December |
Cheapest in | January |
Average price | $548 |
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 July 13, 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
Wed 8/19
5:45 am-12:40 pm
1 stop9h 55m
Kona Intl
Wed 8/26
10:00 am-8:05 pm
1 stop7h 05m
$340
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Wed 10/14
2:13 pm-9:08 pm
1 stop9h 55m
Kona Intl
Thu 10/22
11:47 am-11:53 pm
1 stop9h 06m
$366
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Thu 8/27
6:08 am-10:49 am
1 stop7h 41m
Kona Intl
Thu 9/3
10:50 pm-12:12 pm
1 stop10h 22m
$404
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Tue 12/1
9:00 am-9:50 pm
1 stop14h 50m
Kona Intl
Tue 12/8
12:18 pm-9:28 pm
1 stop7h 10m
$425
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Mon 8/17
8:00 am-6:05 pm
1 stop13h 05m
Kona Intl
Thu 8/20
8:00 am-10:10 pm
2 stops11h 10m
$452
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Mon 11/2
1:52 pm-8:32 pm
1 stop8h 40m
Kona Intl
Wed 11/11
11:59 pm-12:01 pm
1 stop10h 02m
$454
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Sat 9/5
6:05 pm-11:06 am
1 stop20h 01m
Kona Intl
Wed 9/9
12:51 pm-9:51 am
2 stops18h 00m
$455
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Sat 8/8
12:04 pm-7:05 pm
1 stop10h 01m
Kona Intl
Fri 8/14
9:19 pm-11:14 am
1 stop10h 55m
$476
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Thu 9/10
5:40 am-2:10 pm
2 stops11h 30m
Kona Intl
Sun 9/13
8:00 am-8:10 pm
1 stop9h 10m
$485
Quickest round-trip
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Thu 9/24
4:03 pm-9:27 pm
1 stop8h 24m
Kona Intl
Mon 9/28
10:55 pm-10:23 am
1 stop8h 28m
$504
Showing 1-10 of 21 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 July.
| 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
Prices
More
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 December is currently the most expensive (average of $692). 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 67% 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 San Francisco (SFO) have the shortest average one-way travel time for 1-stop routes: 7h 44m.
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 1h 03m.
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 July 13, 2026.
Peruse reviews from past customers who have flown with Southwest,Alaska Airlines, andUnited Airlines 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.
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Related info for your journey
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Search flights from Ontario to Kailua-Kona by cabin class
Find flights from Ontario to Kailua-Kona, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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 July 13, 2026.
Ontario and Kailua-Kona flights
Browse other Ontario and Kailua-Kona flight options. Last updated on July 13, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on July 13, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Ontario to Kailua-Kona
Discover the top 3 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 July 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$309 | Average$492 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$335 | Average$459 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$365 | Average$496 | FlexibilityNo cancel fee | On-time63% |