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The Big Island

$171+ 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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — KOA
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 September 17, 2025.

Round-trip from

$360
(Delta)

One-way from

$171
(KAYAK)

Popular in

June

Cheapest in

February

Average price

$351
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 ($61 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 September 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 September 17, 2025.

This Delta deal was found by Cheapflights users on 9/16. 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
Tue 12/98:53 pmKOA - ONT
1 stop12h 17mDelta
Deal found 9/16$360
This Delta deal was found by Cheapflights users on 9/16. 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 11/47:35 amONT - KOA
2 stops14h 18mDelta
Sun 11/98:30 pmKOA - ONT
1 stop12h 36mDelta
Deal found 9/16$365
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 10/299:45 amONT - KOA
1 stop10h 47mAlaska Airlines
Wed 11/57:14 amKOA - ONT
1 stop8h 00mAlaska Airlines
Deal found 9/15$366
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 11/176:00 amONT - KOA
1 stop13h 44mAlaska Airlines
Mon 1/124:45 pmKOA - ONT
1 stop27h 10mAlaska Airlines
Deal found 9/15$371
This Delta deal was found by Cheapflights users on 9/17. 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 11/116:45 amONT - KOA
1 stop13h 28mDelta
Fri 11/148:30 pmKOA - ONT
2 stops17h 39mDelta
Deal found 9/17$372
This Southwest deal was found by Cheapflights users on 9/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/146:00 amONT - KOA
1 stop8h 45mSouthwest
Mon 11/179:15 pmKOA - ONT
1 stop12h 55mSouthwest
Deal found 9/17$373
This Delta deal was found by Cheapflights users on 9/15. 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 10/277:35 amONT - KOA
1 stop12h 55mDelta
Fri 10/319:30 pmKOA - ONT
1 stop13h 31mDelta
Deal found 9/15$374
This flugladen.de deal was found by Cheapflights users on 9/15. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/279:45 amONT - ITO
1 stop10h 11mHawaiian Airlines
Wed 11/56:00 amITO - ONT
1 stop9h 14mHawaiian Airlines
Deal found 9/15$375
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:13 pmONT - KOA
1 stop11h 17mAlaska Airlines
Wed 12/109:10 pmKOA - ONT
1 stop12h 09mAlaska Airlines
Deal found 9/17$375
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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 10/299:45 amONT - KOA
1 stop10h 47mAlaska Airlines
Mon 11/36:00 amKOA - ONT
1 stop9h 14mAlaska Airlines
Deal found 9/16$377
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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 10/289:45 amONT - KOA
1 stop10h 47mAlaska Airlines
Mon 11/39:20 pmKOA - ONT
1 stop11h 45mAlaska Airlines
Deal found 9/16$382
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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 11/1511:59 amONT - KOA
1 stop11h 41mAlaska Airlines
Sat 11/2210:05 pmKOA - ONT
1 stop9h 50mAlaska Airlines
Deal found 9/16$383

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 September 17, 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 11/4

7:35 am-7:53 pm

2 stops14h 18m

Kona Intl

Sun 11/9

8:30 pm-11:06 am

1 stop12h 36m

$365

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Wed 10/29

9:45 am-5:32 pm

1 stop10h 47m

Kona Intl

Wed 11/5

7:14 am-5:14 pm

1 stop8h 00m

$366

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 11/11

6:45 am-6:13 pm

1 stop13h 28m

Kona Intl

Fri 11/14

8:30 pm-4:09 pm

2 stops17h 39m

$372

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Sun 11/9

6:45 am-6:13 pm

1 stop13h 28m

Kona Intl

Mon 11/17

8:30 pm-11:06 am

1 stop12h 36m

$374

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 10/28

7:35 am-5:30 pm

1 stop12h 55m

Kona Intl

Fri 10/31

9:30 pm-2:01 pm

1 stop13h 31m

$374

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 10/27

7:35 am-5:30 pm

1 stop12h 55m

Kona Intl

Fri 10/31

9:30 pm-2:01 pm

1 stop13h 31m

$374

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 10/28

9:45 am-5:32 pm

1 stop10h 47m

Kona Intl

Mon 11/3

9:20 pm-11:05 am

1 stop11h 45m

$382

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Sat 11/15

11:59 am-9:40 pm

1 stop11h 41m

Kona Intl

Sat 11/22

10:05 pm-9:55 am

1 stop9h 50m

$383

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Sat 12/6

12:13 pm-9:30 pm

1 stop11h 17m

Kona Intl

Fri 12/12

9:00 am-11:29 pm

1 stop12h 29m

$384

OntarioHilo

ONT - ITO

ONTITO

Ontario

Tue 1/6

6:00 am-5:51 pm

2 stops13h 51m

Hilo Intl

Tue 1/13

10:53 am-9:55 pm

1 stop9h 02m

$440

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 35 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 September 17, 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 September 17, 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

Entertainment

7.1

Food

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Southwest
8.0
Very good
4,242 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,961 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Hawaiian Airlines
7.8
Good
2,729 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,926 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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?

    Delta and Alaska Airlines can get you from Ontario to The Big Island in just under 10h 47m. Your travel time can differ by up to 3h 31m. 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.

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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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$232Average$499FlexibilityNo cancel feeOn-time85%
DeltaCheapest$233Average$382FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$265Average$409FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$277Average$578FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$340Average$539FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$348Average$575FlexibilityNo cancel feeOn-time75%

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