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The Big Island

$114+ 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — KOA
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheap 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 December 4, 2025.

This Delta deal was found by Cheapflights users on 12/1. 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 12/236:00 amONT - KOA
1 stop11h 48mDelta
Sun 1/118:45 pmKOA - ONT
1 stop15h 11mDelta
Deal found 12/1$319
This Delta deal was found by Cheapflights users on 12/1. 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 12/236:00 amONT - KOA
1 stop11h 48mDelta
Fri 1/98:45 pmKOA - ONT
2 stops13h 31mDelta
Deal found 12/1$459
This Delta deal was found by Cheapflights users on 12/1. 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 12/226:00 amONT - KOA
1 stop11h 48mDelta
Sun 1/118:45 pmKOA - ONT
1 stop15h 11mDelta
Deal found 12/1$519
This Alaska Airlines deal was found by Cheapflights users on 12/2. 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 12/187:00 amONT - KOA
1 stop9h 45mAlaska Airlines
Thu 12/251:05 pmKOA - ONT
1 stop8h 54mAlaska Airlines
Deal found 12/2$522
This Trip.com deal was found by Cheapflights users on 12/3. 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 12/87:00 amONT - KOA
1 stop8h 09mAlaska Airlines
Wed 12/179:10 pmKOA - ONT
1 stop10h 40mAlaska Airlines
Deal found 12/3$539
This Alaska Airlines deal was found by Cheapflights users on 12/2. 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 - KOA
1 stop13h 22mAlaska Airlines
Tue 12/99:10 pmKOA - ONT
1 stop12h 09mAlaska Airlines
Deal found 12/2$551
This Alaska Airlines deal was found by Cheapflights users on 12/2. 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 12/126:00 amONT - KOA
1 stop10h 40mAlaska Airlines
Sun 12/1411:00 amKOA - ONT
1 stop8h 43mAlaska Airlines
Deal found 12/2$553
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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 12/97:00 amONT - KOA
1 stop8h 09mAlaska Airlines
Sat 12/138:44 amKOA - ONT
1 stop9h 39mAlaska Airlines
Deal found 12/3$568
This Alaska Airlines deal was found by Cheapflights users on 12/1. 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 12/246:05 pmONT - KOA
1 stop22h 40mAlaska Airlines
Sun 1/119:10 pmKOA - ONT
1 stop11h 49mAlaska Airlines
Deal found 12/1$570
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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 12/87:00 amONT - ITO
1 stop10h 17mAlaska Airlines
Wed 12/1712:05 pmITO - ONT
1 stop7h 38mAlaska Airlines
Deal found 12/3$571
This Alaska Airlines deal was found by Cheapflights users on 12/2. 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 12/66:00 amONT - KOA
1 stop13h 22mAlaska Airlines
Mon 12/88:44 amKOA - ONT
1 stop9h 39mAlaska Airlines
Deal found 12/2$573
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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 12/87:00 amONT - ITO
1 stop10h 17mAlaska Airlines
Mon 12/1512:05 pmITO - ONT
1 stop7h 38mAlaska Airlines
Deal found 12/3$588

Find 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 December 4, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$255
(Southwest)

One-way from

$114
(Southwest)

Popular in

June

Cheapest in

February

Average price

$507
Provider with most accurate pricing for Los Angeles-Kona Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Kona Intl flights.
Search Deals
From Ontario to The Big Island
Search Deals
One-way flight from Ontario to The Big Island
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($63 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 4, 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 1/13

7:00 am-1:15 pm

1 stop8h 15m

Kona Intl

Wed 1/28

9:25 pm-9:20 am

2 stops9h 55m

$260

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Fri 1/23

6:05 am-1:45 pm

1 stop9h 40m

Kona Intl

Tue 1/27

10:00 am-7:35 pm

1 stop7h 35m

$293

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 1/6

7:00 am-1:15 pm

1 stop8h 15m

Kona Intl

Tue 1/13

10:00 am-7:35 pm

1 stop7h 35m

$295

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 1/13

8:13 am-4:00 pm

1 stop9h 47m

Kona Intl

Wed 1/21

9:10 pm-10:59 am

1 stop11h 49m

$303

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Thu 2/19

7:30 am-6:30 pm

2 stops13h 00m

Kona Intl

Wed 2/25

8:59 pm-12:07 pm

2 stops13h 08m

$316

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Wed 2/4

6:00 am-7:57 pm

2 stops15h 57m

Kona Intl

Tue 2/10

10:55 pm-4:15 pm

2 stops15h 20m

$318

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 4/21

11:30 am-9:41 pm

1 stop13h 11m

Kona Intl

Wed 4/29

12:00 pm-11:48 pm

1 stop8h 48m

$331

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 1/12

6:00 am-3:51 pm

1 stop11h 51m

Kona Intl

Tue 1/13

8:45 pm-1:56 pm

1 stop15h 11m

$337

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 1/12

8:13 am-4:00 pm

1 stop9h 47m

Kona Intl

Tue 1/13

12:51 pm-10:28 pm

1 stop7h 37m

$355

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Sat 2/21

5:45 am-6:10 pm

2 stops14h 25m

Kona Intl

Fri 2/27

10:00 am-11:20 pm

2 stops11h 20m

$355

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

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, 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 December 4, 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 December 4, 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
11,396 reviews

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.
Alaska Airlines
8.0
Very good
11,396 reviews
Alaska Airlines
8.0
Very good
11,396 reviews

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.
Southwest
8.0
Very good
4,253 reviews
Alaska Airlines
8.0
Very good
11,396 reviews

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.
Delta
7.9
Good
8,011 reviews
Alaska Airlines
8.0
Very good
11,396 reviews

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.
Hawaiian Airlines
7.8
Good
2,815 reviews
Alaska Airlines
8.0
Very good
11,396 reviews

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.
United Airlines
7.4
Good
9,063 reviews
Alaska Airlines
8.0
Very good
11,396 reviews

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.

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?

    Southwest, Alaska Airlines, and Hawaiian Airlines can get you from Ontario to The Big Island in just under 8h 15m. Your travel time can differ by up to 1h 45m. 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 cheapest airlines to fly from Ontario to The Big Island one-way?

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $123. Alaska Airlines flights start at $174 while deals on Hawaiian Airlines start at $207 one-way.

  • 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.

See more FAQs

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Alternative routes for Ontario to The Big Island

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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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$220Average$387FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$232Average$375FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$265Average$411FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$277Average$537FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$308Average$504FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$332Average$556FlexibilityNo cancel feeOn-time75%

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