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The Big Island

$162+ Cheap flights from Ontario (ONT) to The Big Island

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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — KOA
Nov 21 — Nov 281
Fri 11/21
Fri 11/28
1 adult, Economy
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Cheap flight deals from Ontario to The Big Island

Keep the following information in mind while searching for Ontario to The Big Island flight deals. Data was last updated October 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$312
(Alaska Airlines)

One-way from

$162
(Alaska Airlines)

Popular in

June

Cheapest in

February

Average price

$349
Provider with most accurate pricing for Los Angeles-Kona Intl flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Kona Intl flights.
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From Ontario to The Big Island
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One-way flight from Ontario to The Big Island
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Highest demand for flights based on searches. 13% potential increase in price ($64 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Ontario to The Big Island

Cheapest flights from Ontario to The Big Island
Explore the most affordable flight options available from Ontario to The Big Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2025.

This Alaska Airlines deal was found by Cheapflights users on 10/21. 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 12/106:00 amONT - KOA
1 stop10h 40mAlaska Airlines
Wed 12/109:10 pmKOA - ONT
1 stop12h 09mAlaska Airlines
Deal found 10/21$316
This Alaska Airlines deal was found by Cheapflights users on 10/21. 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.
Tue 12/912:13 pmONT - KOA
1 stop11h 17mAlaska Airlines
Wed 12/109:10 pmKOA - ONT
1 stop12h 09mAlaska Airlines
Deal found 10/21$321
This Delta deal was found by Cheapflights users on 10/21. 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.
Mon 12/86:40 amONT - KOA
1 stop13h 40mDelta
Sun 12/148:43 pmKOA - ONT
2 stops13h 51mDelta
Deal found 10/21$326
This Alaska Airlines deal was found by Cheapflights users on 10/21. 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.
Thu 12/412:13 pmONT - KOA
1 stop11h 17mAlaska Airlines
Mon 12/159:10 pmKOA - ONT
1 stop12h 09mAlaska Airlines
Deal found 10/21$339
This Alaska Airlines deal was found by Cheapflights users on 10/21. 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.
Fri 12/56:00 amONT - KOA
1 stop13h 22mAlaska Airlines
Tue 12/169:10 pmKOA - ONT
1 stop12h 09mAlaska Airlines
Deal found 10/21$347
This Alaska Airlines deal was found by Cheapflights users on 10/21. 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 12/1012:13 pmONT - KOA
1 stop11h 17mAlaska Airlines
Thu 12/119:00 amKOA - ONT
1 stop12h 29mAlaska Airlines
Deal found 10/21$357
This American Airlines deal was found by Cheapflights users on 10/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/139:59 amONT - KOA
1 stop8h 48mAmerican Airlines
Wed 11/199:35 pmKOA - ONT
1 stop9h 26mAmerican Airlines
Deal found 10/21$358
This Alaska Airlines deal was found by Cheapflights users on 10/21. 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.
Sun 12/76:00 amONT - KOA
1 stop13h 22mAlaska Airlines
Thu 12/119:00 amKOA - ONT
1 stop12h 29mAlaska Airlines
Deal found 10/21$362
This Alaska Airlines deal was found by Cheapflights users on 10/21. 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.
Sat 12/612:13 pmONT - KOA
1 stop11h 17mAlaska Airlines
Mon 12/159:00 amKOA - ONT
1 stop12h 29mAlaska Airlines
Deal found 10/21$369
This Delta deal was found by Cheapflights users on 10/21. 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.
Sat 12/65:49 pmONT - KOA
1 stop26h 31mDelta
Thu 12/118:43 pmKOA - ONT
1 stop12h 30mDelta
Deal found 10/21$372
This Delta deal was found by Cheapflights users on 10/21. 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.
Fri 12/56:40 amONT - KOA
1 stop13h 41mDelta
Thu 12/118:43 pmKOA - ONT
1 stop12h 30mDelta
Deal found 10/21$376
This Alaska Airlines deal was found by Cheapflights users on 10/19. 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 12/26:00 amONT - ITO
2 stops12h 05mAlaska Airlines
Sat 12/69:31 amITO - ONT
1 stop8h 52mAlaska Airlines
Deal found 10/19$486

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to The Big Island 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 October 22, 2025.
Use the filters below to find and compare flights from Ontario to The Big Island that are best for you.

Fly from

Ontario

Fly to

The Big Island

Route

Depart

Return

Price

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Sun 1/11

8:13 am-3:50 pm

1 stop9h 37m

Kona Intl

Thu 1/15

6:00 am-10:28 pm

1 stop14h 28m

$324

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Sun 1/11

6:45 am-6:55 pm

1 stop14h 10m

Kona Intl

Thu 1/15

9:45 pm-12:34 pm

2 stops12h 49m

$373

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 11/10

6:00 am-12:45 pm

1 stop8h 45m

Kona Intl

Mon 11/17

9:15 pm-9:35 am

1 stop10h 20m

$389

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Sun 12/7

6:00 am-5:22 pm

1 stop13h 22m

Kona Intl

Tue 12/16

9:10 pm-8:03 pm

2 stops20h 53m

$392

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 11/11

9:47 am-6:25 pm

1 stop10h 38m

Kona Intl

Fri 11/14

9:20 pm-11:05 am

1 stop11h 45m

$415

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 1/5

7:00 am-2:45 pm

1 stop9h 45m

Kona Intl

Sun 1/11

9:10 pm-10:59 am

1 stop11h 49m

$419

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Fri 12/5

6:00 am-5:22 pm

1 stop13h 22m

Kona Intl

Fri 12/12

9:10 pm-11:19 am

1 stop12h 09m

$420

OntarioHilo

ONT - ITO

ONTITO

Ontario

Mon 1/19

8:13 am-4:05 pm

1 stop9h 52m

Hilo Intl

Thu 1/22

12:05 pm-10:28 pm

1 stop8h 23m

$424

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 11/4

11:59 am-9:40 pm

1 stop11h 41m

Kona Intl

Wed 11/12

9:20 pm-11:05 am

1 stop11h 45m

$426

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Thu 1/15

8:13 am-5:09 pm

1 stop10h 56m

Kona Intl

Mon 1/19

9:00 am-11:56 pm

1 stop12h 56m

$439

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/19

Showing 1-10 of 41 results
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Best time to book a flight from Ontario to The Big Island

Have a flexible travel schedule? Discover the best time to fly to The Big Island 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.

Cheapflights Insights

Everything you need to know about your flight from Ontario to The Big Island

What is the cheapest month to book a flight from Ontario to The Big Island?

Currently, May is the cheapest month in which you can book a flight from Ontario to The Big Island (average of $149). Flying from Ontario to The Big Island in June is currently the most expensive (average of $251). 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 FUI?

Find hourly flight availability from Ontario to The Big Island. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 22, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 78% on flights from Ontario to The Big Island by exploring options for tickets in the afternoon.

Reviews of airlines servicing The Big Island

Get insights into the airlines that provide service to The Big Island. 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 The Big Island. Reviews last updated October 22, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Ontario to The Big Island by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,150 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
11,150 reviews
Alaska Airlines
8.0
Very good
11,150 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Southwest
8.0
Very good
4,237 reviews
Alaska Airlines
8.0
Very good
11,150 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Delta
7.9
Good
7,979 reviews
Alaska Airlines
8.0
Very good
11,150 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Hawaiian Airlines
7.8
Good
2,788 reviews
Alaska Airlines
8.0
Very good
11,150 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
United Airlines
7.4
Good
8,988 reviews
Alaska Airlines
8.0
Very good
11,150 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Related info for your journey

Find useful and relevant information for your journey from Ontario to The Big Island. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to The Big Island?

    Most people fly from Ontario (ONT) if they book a flight from Ontario to The Big Island. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

  • How long is the flight from Ontario to The Big Island?

    Alaska Airlines, Delta, and Southwest can get you from Ontario to The Big Island in just under 8h 45m. Your travel time can differ by up to 5h 25m. The distance between Ontario and The Big Island is about 2547 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Ontario to The Big Island?

    When deciding which route to take from Ontario to The Big Island consider Ontario - Kona Intl, Ontario - Hilo Intl or Ontario - Waimea (Big Island) Waimea Kohala as they are the most popular.

  • Can I find deals for flights from Ontario to The Big Island that include hotel bookings?

    Yes. In addition to deals on Ontario to The Big Island flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to The Big Island?

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

  • Can I find deals for business class flights from Ontario to The Big Island?

    Yes. Cheapflights offers flight deals from Ontario to The Big Island 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 The Big Island?

    Currently, May is the cheapest month in which you can book a flight from Ontario to The Big Island (average of $149). Flying from Ontario to The Big Island in June is currently the most expensive (average of $251). 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.

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Alternative routes for Ontario to The Big Island

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Ontario to The Big Island

Discover the top 6 airlines that operate flights from Ontario to The Big Island. 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 October 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$232Average$451FlexibilityNo cancel feeOn-time85%
DeltaCheapest$233Average$370FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$265Average$407FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$277Average$578FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$308Average$504FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$320Average$573FlexibilityNo cancel feeOn-time75%

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