$190+ Cheap flights from Ontario to Kailua-Kona (ONT - KOA)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — KOA
Oct 10 — Oct 171
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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 September 10, 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 September 10, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/6. 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 11/37:30 am -
1 stop16h 19m
Wed 11/48:49 am -
1 stop10h 53m
Deal found 9/6![Multiple Airlines logo]()
$396
This Booking.com deal was found by Cheapflights users on 9/5. 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.
Tue 12/86:00 am -
1 stop18h 03m
Tue 12/157:04 am -
1 stop13h 35m
Deal found 9/5![Alaska Airlines logo]()
$397
This Expedia deal was found by Cheapflights users on 9/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:13 pm -
1 stop9h 52m
Tue 10/277:30 am -
1 stop10h 59m
Deal found 9/6![Multiple Airlines logo]()
$399
This Booking.com deal was found by Cheapflights users on 9/6. 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 11/46:00 am -
1 stop19h 15m
Mon 11/95:49 pm -
1 stop25h 53m
Deal found 9/6![Multiple Airlines logo]()
$400
This Priceline deal was found by Cheapflights users on 9/8. 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.
Wed 10/287:00 am -
1 stop9h 32m
Wed 11/47:30 am -
1 stop12h 12m
Deal found 9/8![Multiple Airlines logo]()
$401
This Gotogate deal was found by Cheapflights users on 9/7. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:00 am -
1 stop7h 43m
Thu 10/296:31 pm -
1 stop23h 58m
Deal found 9/7![Multiple Airlines logo]()
$402
This Priceline deal was found by Cheapflights users on 9/5. 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.
Mon 10/192:13 pm -
1 stop9h 52m
Thu 10/2211:19 am -
1 stop7h 10m
Deal found 9/5![Multiple Airlines logo]()
$406
This Delta deal was found by Cheapflights users on 9/6. 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 11/187:00 am -
1 stop14h 25m
Sun 11/2210:40 pm -
1 stop22h 20m
Deal found 9/6![Delta logo]()
$408
This Delta deal was found by Cheapflights users on 9/8. 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 11/187:00 am -
1 stop14h 25m
Thu 12/310:40 pm -
1 stop10h 37m
Deal found 9/8![Delta logo]()
$410
This Delta deal was found by Cheapflights users on 9/6. 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 10/206:20 am -
2 stops16h 06m
Tue 10/279:06 pm -
1 stop11h 10m
Deal found 9/6![Delta logo]()
$412
This Delta deal was found by Cheapflights users on 9/7. 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 10/226:20 am -
2 stops16h 06m
Mon 10/269:06 pm -
2 stops12h 30m
Deal found 9/7![Delta logo]()
$417
This Alaska Airlines deal was found by Cheapflights users on 9/5. 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 10/242:13 pm -
1 stop9h 52m
Mon 10/268:45 pm -
1 stop21h 44m
Deal found 9/5![Multiple Airlines logo]()
$428
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 September 10, 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 September 10, 2026.
This Southwest deal was found by Cheapflights users on 9/5. 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.
Sun 12/139:00 am -
1 stop7h 25m
Sun 12/208:00 am -
1 stop12h 45m
Deal found 9/5![Southwest logo]()
$435
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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.
Fri 1/157:00 am -
1 stop16h 49m
Tue 1/194:15 pm -
1 stop27h 03m
Deal found 9/9![Multiple Airlines logo]()
$436
This United Airlines deal was found by Cheapflights users on 9/6. 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 9/206:08 am -
1 stop7h 41m
Thu 10/110:55 pm -
1 stop10h 23m
Deal found 9/6![United Airlines logo]()
$507
This Delta deal was found by Cheapflights users on 9/5. 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 12/317:00 am -
1 stop14h 40m
Wed 1/610:45 pm -
1 stop21h 58m
Deal found 9/5![Delta logo]()
$529
This Alaska Airlines deal was found by Cheapflights users on 9/6. 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 1/107:00 am -
1 stop7h 47m
Sat 1/165:49 pm -
1 stop25h 29m
Deal found 9/6![Multiple Airlines logo]()
$436
This Southwest deal was found by Cheapflights users on 9/7. 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 2/97:00 am -
1 stop8h 00m
Sun 2/149:00 am -
1 stop9h 20m
Deal found 9/7![Southwest logo]()
$454
This Alaska Airlines deal was found by Cheapflights users on 9/7. 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 11/37:30 am -
1 stop16h 19m
Wed 11/49:19 am -
2 stops10h 23m
Deal found 9/7![Multiple Airlines logo]()
$461
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Wed 9/304:03 pm -
1 stop8h 24m
Tue 10/2010:55 pm -
1 stop8h 28m
Deal found 9/9![United Airlines logo]()
$520
This Southwest deal was found by Cheapflights users on 9/6. 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 11/66:05 am -
2 stops10h 20m
Mon 11/96:00 am -
2 stops10h 10m
Deal found 9/6![Southwest logo]()
$489
This Delta deal was found by Cheapflights users on 9/8. 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.
Mon 12/147:00 am -
1 stop14h 56m
Tue 12/229:50 pm -
1 stop17h 08m
Deal found 9/8![Delta logo]()
$577
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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 11/77:30 am -
1 stop11h 47m
Tue 11/108:49 am -
1 stop10h 53m
Deal found 9/9![Multiple Airlines logo]()
$478
Last-minute flights from Ontario to Kailua-KonaDiscover last-minute flight deals from Ontario to Kailua-Kona. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Kailua-Kona. Data last updated September 10, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 9/9. 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.
Fri 10/168:00 am -
1 stop13h 10m
Tue 10/2010:00 am -
1 stop9h 15m
Deal found 9/9![Southwest logo]()
$440
This Priceline deal was found by Cheapflights users on 9/5. 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.
Mon 10/192:13 pm -
1 stop9h 52m
Thu 10/2211:19 am -
1 stop7h 10m
Deal found 9/5![Multiple Airlines logo]()
$406
This Expedia deal was found by Cheapflights users on 9/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:13 pm -
1 stop9h 52m
Tue 10/277:30 am -
1 stop10h 59m
Deal found 9/6![Multiple Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 9/6. 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 10/206:20 am -
2 stops16h 06m
Tue 10/279:06 pm -
1 stop11h 10m
Deal found 9/6![Delta logo]()
$412
This Delta deal was found by Cheapflights users on 9/7. 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 10/226:20 am -
2 stops16h 06m
Mon 10/269:06 pm -
2 stops12h 30m
Deal found 9/7![Delta logo]()
$417
This Alaska Airlines deal was found by Cheapflights users on 9/7. 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 10/226:56 pm -
1 stop29h 09m
Thu 10/298:45 pm -
1 stop21h 44m
Deal found 9/7![Multiple Airlines logo]()
$435
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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.
Fri 10/237:00 am -
1 stop7h 43m
Mon 10/267:15 pm -
1 stop23h 14m
Deal found 9/9![Multiple Airlines logo]()
$436
This Alaska Airlines deal was found by Cheapflights users on 9/5. 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 10/242:13 pm -
1 stop9h 52m
Mon 10/268:45 pm -
1 stop21h 44m
Deal found 9/5![Multiple Airlines logo]()
$428
This Alaska Airlines deal was found by Cheapflights users on 9/6. 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 10/256:02 am -
1 stop18h 03m
Sat 10/318:48 am -
1 stop9h 41m
Deal found 9/6![Multiple Airlines logo]()
$433
This Gotogate deal was found by Cheapflights users on 9/7. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:00 am -
1 stop7h 43m
Thu 10/296:31 pm -
1 stop23h 58m
Deal found 9/7![Multiple Airlines logo]()
$402
This Priceline deal was found by Cheapflights users on 9/8. 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.
Wed 10/287:00 am -
1 stop9h 32m
Wed 11/47:30 am -
1 stop12h 12m
Deal found 9/8![Multiple Airlines logo]()
$401
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 September 10, 2026.
Search for one-way flight options from Ontario to Kailua-Kona. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
This Booking.com deal was found by Cheapflights users on 9/6. 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.
Fri 10/237:00 am -
1 stop8h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Multiple Airlines logo]()
$190
This Trip.com deal was found by Cheapflights users on 9/9. 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.
Mon 10/267:00 am -
1 stop13h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$197
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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 12/139:00 am -
1 stop14h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$201
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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 10/2011:13 am -
1 stop12h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Alaska Airlines logo]()
$205
This Booking.com deal was found by Cheapflights users on 9/5. 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.
Tue 10/277:00 am -
1 stop26h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Multiple Airlines logo]()
$207
This Delta deal was found by Cheapflights users on 9/9. 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.
Mon 10/266:00 am -
2 stops14h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Delta logo]()
$211
This Delta deal was found by Cheapflights users on 9/6. 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 10/126:20 am -
1 stop14h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Delta logo]()
$232
This Alaska Airlines deal was found by Cheapflights users on 9/7. 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.
Fri 1/227:00 am -
1 stop16h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$235
This Booking.com deal was found by Cheapflights users on 9/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/36:10 pm -
1 stop19h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Alaska Airlines logo]()
$239
This Delta deal was found by Cheapflights users on 9/8. 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 9/306:00 am -
1 stop14h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Delta logo]()
$244
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 September 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $374 (Alaska Airlines) |
One-way from | $190 (Booking.com) |
Popular in | December |
Cheapest in | January |
Average price | $511 |
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 7,457,451 searches. Data last updated September 10, 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
Quickest round-trip
OntarioKailua-Kona
ONT Ontario - KOA Kona Intl
ONTKOA
Ontario
Sun 10/18
7:00 am-12:16 pm
1 stop8h 16m
Kona Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$201
OntarioKailua-Kona
ONT Ontario - KOA Kona Intl
ONTKOA
Ontario
Mon 10/19
6:20 am-5:38 pm
1 stop14h 18m
Kona Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$232
OntarioKailua-Kona
ONT Ontario - KOA Kona Intl
ONTKOA
Ontario
Tue 10/6
6:20 am-5:38 pm
1 stop14h 18m
Kona Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$239
OntarioKailua-Kona
ONT Ontario - KOA Kona Intl
ONTKOA
Ontario
Fri 10/30
11:00 am-9:30 pm
2 stops13h 30m
Kona Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$245
OntarioKailua-Kona
ONT Ontario - KOA Kona Intl
ONTKOA
Ontario
Thu 10/22
6:56 pm-9:05 pm
1 stop29h 09m
Kona Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$259
OntarioKailua-Kona
ONT Ontario - KOA Kona Intl
ONTKOA
Ontario
Wed 10/14
1:52 pm-9:27 pm
1 stop10h 35m
Kona Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$260
OntarioKailua-Kona
ONT Ontario - KOA Kona Intl
ONTKOA
Ontario
Wed 10/21
1:52 pm-9:27 pm
1 stop10h 35m
Kona Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$260
OntarioKailua-Kona
ONT Ontario - KOA Kona Intl
ONTKOA
Ontario
Tue 10/13
1:52 pm-9:27 pm
1 stop10h 35m
Kona Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$260
OntarioKailua-Kona
ONT Ontario - KOA Kona Intl
ONTKOA
Ontario
Wed 2/17
1:33 pm-8:49 pm
1 stop9h 16m
Kona Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$260
OntarioKailua-Kona
ONT Ontario - KOA Kona Intl
ONTKOA
Ontario
Sun 12/13
9:00 am-2:25 pm
1 stop7h 25m
Kona Intl
Sun 12/20
8:00 am-10:45 pm
1 stop12h 45m
$435
Showing 1-10 of 20 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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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
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 $358). Flying from Ontario to Kailua-Kona in December is currently the most expensive (average of $833). 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?
Airfare is typical for this route at the moment.
Ontario to Kailua-Kona flights typically cost between $379 and $650 in November.The cheapest round-trip price found within the last 5 days was $396 on Multiple Airlines (Nov 3-Nov 4).
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 September 10, 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
Crew
8.6
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Overall
8.0
Crew
8.6
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Overall
8.0
Crew
8.6
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Overall
8.0
Crew
8.6
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Overall
8.0
Crew
8.6
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - 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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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 September 10, 2026.
Ontario and Kailua-Kona flights
Browse other Ontario and Kailua-Kona flight options. Last updated on September 10, 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 September 10, 2026.
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 7,457,451 searches. Data last updated September 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$296 | Average$574 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$307 | Average$524 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$335 | Average$464 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$379 | Average$539 | FlexibilityNo cancel fee | On-time63% |