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Kailua-Kona

$139+ 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 3/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — KOA
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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The best prices from Ontario to Kona Intl are usually found in April or May, booked 51 days in advance, depart on a Sunday or Wednesday and return on a Wednesday

Cheap 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 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$283
(Delta)

One-way from

$139
(Southwest)

Popular in

June

Cheapest in

April

Average price

$373
Provider with most accurate pricing for Ontario-Kona Intl flight deals.
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Provider most trusted by Cheapflights users for Ontario-Kona Intl flights.
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From Ontario to Kona Intl
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One-way flight from Ontario to Kona Intl
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Highest demand for flights based on searches. 8% potential increase in price ($38 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Ontario to Kailua-Kona

Cheapest flights from Ontario to Kailua-Kona
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 20, 2025.

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 9/47:00 amONT - KOA
1 stop13h 38mDelta
Thu 9/49:45 pmKOA - ONT
1 stop12h 38mDelta
Deal found 2/19$278
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.
Wed 9/101:34 pmONT - KOA
1 stop27h 08mAmerican Airlines
Wed 9/1711:20 pmKOA - ONT
1 stop9h 09mAmerican Airlines
Deal found 2/20$349
This Netflights 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/169:50 amONT - KOA
1 stop10h 36mAlaska Airlines
Thu 9/187:00 amKOA - ONT
1 stop11h 55mAlaska Airlines
Deal found 2/19$368
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/126:00 amONT - KOA
1 stop8h 48mUnited Airlines
Wed 3/1210:55 pmKOA - ONT
1 stop7h 59mUnited Airlines
Deal found 2/19$456
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.
Mon 2/246:40 amONT - KOA
1 stop8h 20mSouthwest
Sat 3/16:10 amKOA - ONT
2 stops10h 35mSouthwest
Deal found 2/20$466

Find flights from Ontario to Kailua-Kona within your budget

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 20, 2025.

Fly from

Ontario

Fly to

Kailua-Kona

Route

Depart

Return

Price

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Fri 4/25

5:45 am-5:39 pm

1 stop14h 54m

Kona Intl

Sun 5/4

8:20 pm-11:05 am

1 stop11h 45m

$283

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Thu 3/6

9:45 am-5:37 pm

1 stop9h 52m

Kona Intl

Wed 3/12

8:00 am-8:55 pm

1 stop9h 55m

$370

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Wed 3/12

6:00 am-11:48 am

1 stop8h 48m

Kona Intl

Wed 3/12

10:55 pm-9:54 am

1 stop7h 59m

$456

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 2/24

6:40 am-1:00 pm

1 stop8h 20m

Kona Intl

Sat 3/1

6:10 am-6:45 pm

2 stops10h 35m

$466

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Sun 4/13

7:20 pm-2:20 pm

1 stop22h 00m

Kona Intl

Fri 4/18

9:16 pm-9:01 am

1 stop8h 45m

$502

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 4/1

8:50 am-5:27 pm

1 stop11h 37m

Kona Intl

Tue 4/8

7:00 am-9:50 pm

1 stop11h 50m

$606

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Thu 3/13

7:05 am-12:05 pm

1 stop8h 00m

$139

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Sat 5/10

7:00 am-5:42 pm

1 stop13h 42m

$142

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 3/10

8:50 am-4:28 pm

1 stop10h 38m

$176

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Sun 5/4

6:00 am-11:44 am

1 stop8h 44m

$189

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 12 results
1
2

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.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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.
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.

Travel insights for flights from Ontario to Kailua-Kona

Get recent, data-driven insights about flights from Ontario to Kailua-Kona including ideal travel times, pricing trends, and 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 14, 2025.

To ensure you get the cheapest price possible for a flight from Ontario to Kailua-Kona, you should look to book at least 51 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, October is the cheapest month in which you can book a flight from Ontario to Kailua-Kona (average of $409). Flying from Ontario to Kailua-Kona in June is currently the most expensive (average of $621). 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 is the cheapest time of day to fly from ONT to KOA?

Find hourly flight availability from Ontario to Kailua-Kona. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

When flying from Ontario to Kailua-Kona, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 78% versus a flight at noon.

Rainfall in Kailua-Kona by month

Plan your trip to Kailua-Kona by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Kailua-Kona ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. February is typically the driest time to visit Kailua-Kona when rainfall is around 1.6 in.

Temperature in Kailua-Kona by month

Plan your trip to Kailua-Kona by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Kailua-Kona, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 71.6 F).

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 20, 2025.
To help decide which airline to fly from Ontario to Kailua-Kona, see what other customers have to say about Southwest, Alaska Airlines and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.0
Very good
9,697 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.0
Very good
8,219 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines
7.4
Good
8,765 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

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.

  • What are the cheapest airlines flying from Ontario to Kailua-Kona round-trip?

    Cheapflights users have booked flights from Ontario to Kailua-Kona round-trip from $283. Other airlines that can offer you cheap pricing are Alaska Airlines, from $370, and Southwest, from $435. Delta is currently priced 31% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Ontario to Kailua-Kona one-way?

    The cheapest airlines for a one-way flight from Ontario to Kailua-Kona are Southwest ($139), Delta ($142), and Alaska Airlines ($176).

  • Can I find deals for flights from Ontario to Kailua-Kona that include hotel bookings?

    Yes. In addition to deals on Ontario to Kailua-Kona flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Kailua-Kona?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Kailua-Kona.

  • Can I find deals for business class flights from Ontario to Kailua-Kona?

    Yes. Cheapflights offers flight deals from Ontario to Kailua-Kona by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Kailua-Kona?

    Currently, October is the cheapest month in which you can book a flight from Ontario to Kailua-Kona (average of $409). Flying from Ontario to Kailua-Kona in June is currently the most expensive (average of $621). 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.

See more FAQs

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Top 6 airlines flying from Ontario to Kailua-Kona

Discover the top 6 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 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$247Average$410FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$248Average$407FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$275Average$534FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$277Average$475FlexibilityNo cancel feeOn-time63%
DeltaCheapest$281Average$362FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$320Average$410FlexibilityNo cancel feeOn-time75%
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