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The Big Island

$176+ 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 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — KOA
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
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 August 20, 2025.

Round-trip from

$326
(lastminute.com)

One-way from

$176
(Hawaiian Airlines)

Popular in

June

Cheapest in

February

Average price

$429
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 ($63 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 August 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 August 20, 2025.

This Delta deal was found by Cheapflights users on 8/20. 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 9/116:00 amONT - KOA
1 stop14h 29mDelta
Wed 9/179:30 pmKOA - ONT
1 stop10h 39mDelta
Deal found 8/20$346
This Alaska Airlines deal was found by Cheapflights users on 8/18. 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 11/411:59 amONT - ITO
2 stops12h 20mAlaska Airlines
Wed 11/56:00 amITO - ONT
1 stop9h 14mAlaska Airlines
Deal found 8/18$356
This Alaska Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2911:59 amONT - KOA
1 stop12h 41mAlaska Airlines
Thu 11/67:14 amKOA - ONT
1 stop8h 00mAlaska Airlines
Deal found 8/18$357
This Delta deal was found by Cheapflights users on 8/18. 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 9/96:00 amONT - KOA
1 stop14h 34mDelta
Fri 9/199:30 pmKOA - ONT
1 stop10h 39mDelta
Deal found 8/18$361
This Alaska Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/296:00 amONT - ITO
2 stops14h 40mAlaska Airlines
Wed 11/56:00 amITO - ONT
1 stop9h 14mAlaska Airlines
Deal found 8/18$362
This Delta deal was found by Cheapflights users on 8/17. 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 9/96:00 amONT - KOA
1 stop14h 34mDelta
Wed 9/179:30 pmKOA - ONT
2 stops11h 47mDelta
Deal found 8/17$366
This Delta deal was found by Cheapflights users on 8/17. 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 9/116:00 amONT - KOA
1 stop14h 29mDelta
Fri 9/199:30 pmKOA - ONT
1 stop10h 39mDelta
Deal found 8/17$367
This Alaska Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2911:59 amONT - ITO
2 stops13h 25mAlaska Airlines
Fri 11/77:43 pmITO - ONT
2 stops12h 15mAlaska Airlines
Deal found 8/18$372
This Delta deal was found by Cheapflights users on 8/17. 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 9/86:00 amONT - KOA
1 stop14h 34mDelta
Wed 9/179:30 pmKOA - ONT
2 stops11h 47mDelta
Deal found 8/17$372
This Alaska Airlines deal was found by Cheapflights users on 8/18. 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 11/29:45 amONT - KOA
1 stop9h 37mAlaska Airlines
Wed 11/56:00 amKOA - ONT
1 stop9h 14mAlaska Airlines
Deal found 8/18$373
This Alaska Airlines deal was found by Cheapflights users on 8/19. 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 9/2310:09 amONT - KOA
1 stop10h 34mAlaska Airlines
Wed 10/811:57 amKOA - ONT
1 stop8h 54mAlaska Airlines
Deal found 8/19$375
This Alaska Airlines deal was found by Cheapflights users on 8/18. 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 11/49:45 amONT - ITO
1 stop8h 19mAlaska Airlines
Tue 11/47:43 pmITO - ONT
2 stops13h 22mAlaska Airlines
Deal found 8/18$377

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 August 20, 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

Tue 2/10

9:50 am-5:21 pm

1 stop9h 31m

Kona Intl

Tue 2/24

12:45 pm-9:55 pm

1 stop7h 10m

$326

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Thu 9/11

6:00 am-5:29 pm

1 stop14h 29m

Kona Intl

Wed 9/17

9:30 pm-11:09 am

1 stop10h 39m

$346

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Wed 2/11

9:50 am-5:21 pm

1 stop9h 31m

Kona Intl

Tue 3/3

12:45 pm-9:55 pm

1 stop7h 10m

$352

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Sun 1/11

9:50 am-5:21 pm

1 stop9h 31m

Kona Intl

Thu 1/15

7:00 am-9:55 pm

1 stop12h 55m

$352

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Wed 1/21

9:50 am-4:26 pm

1 stop8h 36m

Kona Intl

Wed 1/28

6:00 pm-9:55 pm

1 stop25h 55m

$353

OntarioHilo

ONT - ITO

ONTITO

Ontario

Tue 11/4

11:59 am-10:19 pm

2 stops12h 20m

Hilo Intl

Wed 11/5

6:00 am-5:14 pm

1 stop9h 14m

$356

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Wed 2/11

9:50 am-4:26 pm

1 stop8h 36m

Kona Intl

Wed 2/25

10:00 pm-10:39 am

1 stop10h 39m

$357

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Wed 1/14

9:50 am-4:26 pm

1 stop8h 36m

Kona Intl

Wed 1/21

10:00 pm-10:39 am

1 stop10h 39m

$357

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Wed 2/11

9:50 am-5:21 pm

1 stop9h 31m

Kona Intl

Thu 2/26

10:00 pm-10:39 am

1 stop10h 39m

$357

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 1/20

9:50 am-5:21 pm

1 stop9h 31m

Kona Intl

Wed 1/28

10:00 pm-10:39 am

1 stop10h 39m

$357

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Showing 1-10 of 40 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, October is the cheapest month in which you can book a flight from Ontario to The Big Island (average of $409). Flying from Ontario to The Big Island in June is currently the most expensive (average of $624). 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 August 20, 2025.

When flying from Ontario to The Big Island, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 August 20, 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
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,668 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,928 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 and Delta can get you from Ontario to The Big Island in just under 9h 31m. Your travel time can differ by up to 4h 58m. 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, October is the cheapest month in which you can book a flight from Ontario to The Big Island (average of $409). Flying from Ontario to The Big Island in June is currently the most expensive (average of $624). 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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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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$220Average$368FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$232Average$498FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$265Average$410FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$277Average$581FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$340Average$644FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$348Average$573FlexibilityNo cancel feeOn-time75%

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