$162+ 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 4/26. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — KOA
Mar 25 — Apr 11
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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Best
Last-minute
One-way
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 February 23, 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 February 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/58:30 am
ONT
- KOA
1 stop7h 44m
Multiple Airlines
Thu 5/710:36 am
KOA
- ONT
1 stop10h 12m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$301
This Delta deal was found by Cheapflights users on 2/20. 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 4/1611:53 am
ONT
- KOA
1 stop10h 10m
Delta
Thu 4/238:50 pm
KOA
- ONT
1 stop11h 23m
Delta
Deal found 2/20![Delta logo]()
$334
This Delta deal was found by Cheapflights users on 2/19. 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 4/216:00 am
ONT
- KOA
2 stops16h 03m
Delta
Tue 4/288:50 pm
KOA
- ONT
1 stop13h 49m
Delta
Deal found 2/19![Delta logo]()
$338
This Delta deal was found by Cheapflights users on 2/19. 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 5/278:55 pm
KOA
- ONT
1 stop12h 58m
Delta
Deal found 2/19![Delta logo]()
$339
This Delta deal was found by Cheapflights users on 2/22. 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
Thu 5/78:55 pm
KOA
- ONT
2 stops12h 24m
Delta
Deal found 2/22![Delta logo]()
$340
This Delta deal was found by Cheapflights users on 2/20. 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 4/155:55 pm
ONT
- KOA
1 stop28h 08m
Delta
Thu 4/238:50 pm
KOA
- ONT
1 stop11h 23m
Delta
Deal found 2/20![Delta logo]()
$351
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 February 23, 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 February 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/58:30 am
ONT
- KOA
1 stop7h 44m
Multiple Airlines
Thu 5/710:36 am
KOA
- ONT
1 stop10h 12m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$301
This Delta deal was found by Cheapflights users on 2/19. 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 4/1611:53 am
ONT
- KOA
1 stop10h 10m
Delta
Thu 4/238:50 pm
KOA
- ONT
1 stop13h 49m
Delta
Deal found 2/19![Delta logo]()
$334
This Southwest deal was found by Cheapflights users on 2/20. 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 4/2111:05 am
ONT
- KOA
2 stops13h 20m
Southwest
Tue 4/2810:00 am
KOA
- ONT
1 stop7h 50m
Southwest
Deal found 2/20![Southwest logo]()
$382
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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 5/610:39 am
ONT
- KOA
1 stop12h 13m
Alaska Airlines
Sun 5/1010:36 am
KOA
- ONT
1 stop10h 12m
Alaska Airlines
Deal found 2/19![Alaska Airlines logo]()
$442
This United Airlines deal was found by Cheapflights users on 2/22. 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 5/66:00 am
ONT
- KOA
1 stop7h 47m
United Airlines
Mon 5/1111:04 pm
KOA
- ONT
1 stop7h 37m
United Airlines
Deal found 2/22![United Airlines logo]()
$455
This Delta deal was found by Cheapflights users on 2/19. 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 5/278:55 pm
KOA
- ONT
1 stop12h 58m
Delta
Deal found 2/19![Delta logo]()
$339
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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 4/2310:39 am
ONT
- KOA
1 stop12h 13m
Multiple Airlines
Sun 4/269:00 pm
KOA
- ONT
1 stop21h 10m
Multiple Airlines
Deal found 2/20![Multiple Airlines logo]()
$414
This Delta deal was found by Cheapflights users on 2/20. 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 4/147:00 am
ONT
- KOA
1 stop15h 03m
Delta
Tue 4/218:50 pm
KOA
- ONT
1 stop13h 49m
Delta
Deal found 2/20![Delta logo]()
$419
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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 4/216:00 am
ONT
- KOA
2 stops15h 06m
Multiple Airlines
Tue 4/281:14 pm
KOA
- ONT
2 stops17h 31m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$429
This CheapOair deal was found by Cheapflights users on 2/19. 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.
Fri 3/137:00 am
ONT
- KOA
2 stops12h 58m
Multiple Airlines
Tue 3/178:13 pm
KOA
- ONT
1 stop10h 26m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$458
Last-minute flights from Ontario to Kailua-KonaDiscover last-minute flight deals from Ontario to Kailua-Kona. Data last updated February 23, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Kailua-Kona. Data last updated February 23, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 2/22. 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 3/98:45 am
ONT
- KOA
1 stop12h 02m
Multiple Airlines
Tue 3/178:13 pm
KOA
- ONT
1 stop10h 26m
Multiple Airlines
Deal found 2/22![Multiple Airlines logo]()
$427
This Delta deal was found by Cheapflights users on 2/20. 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 3/106:00 am
ONT
- KOA
1 stop11h 53m
Delta
Tue 3/178:55 pm
KOA
- ONT
1 stop11h 23m
Delta
Deal found 2/20![Delta logo]()
$431
This Delta deal was found by Cheapflights users on 2/20. 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 3/106:00 am
ONT
- KOA
1 stop11h 53m
Delta
Mon 3/168:55 pm
KOA
- ONT
1 stop17h 18m
Delta
Deal found 2/20![Delta logo]()
$444
This Alaska Airlines deal was found by Cheapflights users on 2/21. 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 3/118:45 am
ONT
- KOA
1 stop13h 32m
Multiple Airlines
Wed 3/2510:16 am
KOA
- ONT
1 stop9h 43m
Multiple Airlines
Deal found 2/21![Multiple Airlines logo]()
$422
This Delta deal was found by Cheapflights users on 2/22. 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 3/186:00 am
ONT
- KOA
2 stops15h 38m
Delta
Tue 3/248:55 pm
KOA
- ONT
2 stops16h 33m
Delta
Deal found 2/22![Delta logo]()
$385
This Alaska Airlines deal was found by Cheapflights users on 2/21. 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 3/188:32 am
ONT
- KOA
1 stop13h 44m
Multiple Airlines
Wed 3/2510:16 am
KOA
- ONT
1 stop9h 43m
Multiple Airlines
Deal found 2/21![Multiple Airlines logo]()
$416
This American Airlines deal was found by Cheapflights users on 2/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/227:59 pm
ONT
- KOA
1 stop22h 15m
American Airlines
Thu 3/269:40 pm
KOA
- ONT
1 stop8h 11m
American Airlines
Deal found 2/22![American Airlines logo]()
$415
This American Airlines deal was found by Cheapflights users on 2/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/237:59 pm
ONT
- KOA
1 stop22h 15m
American Airlines
Thu 3/269:40 pm
KOA
- ONT
1 stop8h 11m
American Airlines
Deal found 2/20![American Airlines logo]()
$435
This Alaska Airlines deal was found by Cheapflights users on 2/22. 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 3/2410:33 am
ONT
- KOA
1 stop9h 58m
Multiple Airlines
Wed 3/258:51 am
KOA
- ONT
1 stop11h 08m
Multiple Airlines
Deal found 2/22![Multiple Airlines logo]()
$413
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 February 23, 2026.
Search for one-way flight options from Ontario to Kailua-Kona. Find affordable one-way fares based on user searches. Data last updated February 23, 2026.
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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 4/268:30 am
ONT
- KOA
1 stop13h 46m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$162
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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
Deal found 2/20![Multiple Airlines logo]()
$164
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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 5/610:39 am
ONT
- KOA
1 stop12h 13m
Alaska Airlines
Deal found 2/19![Alaska Airlines logo]()
$166
This United Airlines deal was found by Cheapflights users on 2/20. 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
Deal found 2/20![United Airlines logo]()
$167
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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 4/2310:39 am
ONT
- KOA
1 stop12h 13m
Alaska Airlines
Deal found 2/19![Alaska Airlines logo]()
$168
This Delta deal was found by Cheapflights users on 2/21. 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 3/316:00 am
ONT
- KOA
2 stops15h 38m
Delta
Deal found 2/21![Delta logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/258:30 am
ONT
- KOA
1 stop12h 41m
Multiple Airlines
Deal found 2/20![Multiple Airlines logo]()
$182
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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 4/248:30 am
ONT
- KOA
1 stop11h 37m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$194
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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 stop11h 37m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$197
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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 5/910:39 am
ONT
- KOA
1 stop12h 13m
Alaska Airlines
Deal found 2/20![Alaska Airlines logo]()
$198
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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 4/216:00 am
ONT
- KOA
1 stop10h 39m
Alaska Airlines
Deal found 2/19![Alaska Airlines logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/128:49 am
ONT
- KOA
2 stops31h 48m
Multiple Airlines
Deal found 2/20![Multiple Airlines logo]()
$203
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 February 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $301 (Kiwi.com) |
One-way from | $162 (Alaska Airlines) |
Popular in | June |
Cheapest in | January |
Average price | $582 |
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 February 23, 2026.
Use the filters below to find and compare flights from Ontario to Kailua-Kona that are best for you.
Fly from
Ontario
Fly to
Kailua-Kona
Route
Depart
Return
Price
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Tue 5/5
8:30 am-1:14 pm
1 stop7h 44m
Kona Intl
Thu 5/7
10:36 am-11:48 pm
1 stop10h 12m
$301
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Thu 4/16
11:53 am-7:03 pm
1 stop10h 10m
Kona Intl
Thu 4/23
8:50 pm-1:39 pm
1 stop13h 49m
$334
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Tue 5/5
7:00 am-7:03 pm
1 stop15h 03m
Kona Intl
Wed 5/27
8:55 pm-12:53 pm
1 stop12h 58m
$339
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Tue 4/21
11:05 am-9:25 pm
2 stops13h 20m
Kona Intl
Tue 4/28
10:00 am-8:50 pm
1 stop7h 50m
$382
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Thu 4/23
10:39 am-7:52 pm
1 stop12h 13m
Kona Intl
Sun 4/26
9:00 pm-9:10 pm
1 stop21h 10m
$414
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Tue 4/14
7:00 am-7:03 pm
1 stop15h 03m
Kona Intl
Tue 4/21
8:50 pm-1:39 pm
1 stop13h 49m
$419
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Tue 4/21
6:00 am-6:06 pm
2 stops15h 06m
Kona Intl
Tue 4/28
1:14 pm-9:45 am
2 stops17h 31m
$429
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Wed 5/6
10:39 am-7:52 pm
1 stop12h 13m
Kona Intl
Sun 5/10
10:36 am-11:48 pm
1 stop10h 12m
$442
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Wed 5/6
6:00 am-10:47 am
1 stop7h 47m
Kona Intl
Mon 5/11
11:04 pm-9:41 am
1 stop7h 37m
$455
OntarioKailua-Kona
ONT - KOA
ONTKOA
Ontario
Fri 3/13
7:00 am-4:58 pm
2 stops12h 58m
Kona Intl
Tue 3/17
8:13 pm-9:39 am
1 stop10h 26m
$458
Showing 1-10 of 20 results
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 February.
| 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
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 February 20, 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, December is the cheapest month in which you can book a flight from Ontario to Kailua-Kona (average of $167). Flying from Ontario to Kailua-Kona in June is currently the most expensive (average of $253). 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 February 23, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta 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
Boarding
8.1
Entertainment
7.0
Crew
8.5
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Overall
8.0
Boarding
8.1
Entertainment
7.0
Crew
8.5
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Overall
8.0
Boarding
8.1
Entertainment
7.0
Crew
8.5
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Overall
8.0
Boarding
8.1
Entertainment
7.0
Crew
8.5
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Overall
8.0
Boarding
8.1
Entertainment
7.0
Crew
8.5
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
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 February 23, 2026.
Ontario and Kailua-Kona flights
Browse other Ontario and Kailua-Kona flight options. Last updated on February 23, 2026.
Other flights from Ontario
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Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Ontario to Kailua-Kona
Discover the top 4 airlines that operate flights from Ontario to Kailua-Kona. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 23, 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$508 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$381 | Average$559 | FlexibilityNo cancel fee | On-time63% |