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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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — KOA
Feb 21 — Feb 281
Sat 2/21
Sat 2/28
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 January 22, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:00 am
ONT
-
KOA
1 stop16h 52m
Alaska Airlines
Wed 5/139:25 pm
KOA
-
ONT
1 stop23h 33m
Alaska Airlines
Deal found 1/20$284
This Delta deal was found by Cheapflights users on 1/22. 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 3/911:59 am
ONT
-
KOA
1 stop9h 38m
Delta
Tue 3/178:55 pm
KOA
-
ONT
1 stop11h 23m
Delta
Deal found 1/22$286
This Kiwi.com deal was found by Cheapflights users on 1/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/156:00 am
ONT
-
KOA
1 stop10h 39m
Multiple Airlines
Tue 4/218:51 am
KOA
-
ONT
1 stop11h 08m
Multiple Airlines
Deal found 1/19$306
This Alaska Airlines deal was found by Cheapflights users on 1/19. 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 3/38:41 am
ONT
-
KOA
1 stop12h 36m
Multiple Airlines
Wed 3/46:00 am
KOA
-
ONT
1 stop14h 15m
Multiple Airlines
Deal found 1/19$318
This Travelocity deal was found by Cheapflights users on 1/19. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2210:39 am
ONT
-
KOA
1 stop12h 13m
Alaska Airlines
Wed 4/298:00 am
KOA
-
ONT
1 stop11h 32m
Alaska Airlines
Deal found 1/19$332
This Delta deal was found by Cheapflights users on 1/20. 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.
Tue 3/37:30 am
ONT
-
KOA
1 stop14h 09m
Delta
Tue 3/107:40 pm
KOA
-
ONT
1 stop13h 43m
Delta
Deal found 1/20$334
This Alaska Airlines deal was found by Cheapflights users on 1/21. 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.
Mon 4/206:00 am
ONT
-
KOA
1 stop10h 39m
Alaska Airlines
Wed 4/2910:36 am
KOA
-
ONT
1 stop10h 12m
Alaska Airlines
Deal found 1/21$336
This Delta deal was found by Cheapflights users on 1/21. 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.
Thu 4/166:00 am
ONT
-
KOA
2 stops15h 55m
Delta
Wed 4/228:55 pm
KOA
-
ONT
1 stop11h 18m
Delta
Deal found 1/21$337
This Delta deal was found by Cheapflights users on 1/19. 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.
Wed 4/156:00 am
ONT
-
KOA
2 stops15h 55m
Delta
Tue 4/218:55 pm
KOA
-
ONT
1 stop11h 18m
Delta
Deal found 1/19$338
This Delta deal was found by Cheapflights users on 1/20. 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.
Sun 3/16:00 am
ONT
-
KOA
2 stops15h 39m
Delta
Mon 3/97:40 pm
KOA
-
ONT
1 stop13h 43m
Delta
Deal found 1/20$340
This Delta deal was found by Cheapflights users on 1/20. 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.
Wed 3/186:00 am
ONT
-
KOA
2 stops15h 38m
Delta
Tue 3/247:40 pm
KOA
-
ONT
1 stop13h 43m
Delta
Deal found 1/20$342
This Alaska Airlines deal was found by Cheapflights users on 1/21. 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 4/86:00 am
ONT
-
KOA
1 stop19h 27m
Multiple Airlines
Wed 4/156:00 am
KOA
-
ONT
1 stop13h 59m
Multiple Airlines
Deal found 1/21$343

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 January 22, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$284
(Alaska Airlines)

One-way from

$162
(Alaska Airlines)

Popular in

June

Cheapest in

February

Average price

$336
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 ($66 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 22, 2026.
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 5/5

6:00 am-7:52 pm

1 stop16h 52m

Kona Intl

Wed 5/13

9:25 pm-11:58 pm

1 stop23h 33m

$284

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 3/9

11:59 am-6:37 pm

1 stop9h 38m

Kona Intl

Tue 3/17

8:55 pm-11:18 am

1 stop11h 23m

$286

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 4/20

6:00 am-1:39 pm

1 stop10h 39m

Kona Intl

Wed 4/29

10:36 am-11:48 pm

1 stop10h 12m

$336

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Sun 5/3

6:00 am-6:55 pm

2 stops15h 55m

Kona Intl

Mon 5/11

9:45 pm-12:49 pm

1 stop12h 04m

$340

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Thu 4/2

6:00 am-6:38 pm

2 stops15h 38m

Kona Intl

Thu 4/9

7:40 pm-12:23 pm

1 stop13h 43m

$342

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 4/7

7:08 pm-10:27 pm

1 stop30h 19m

Kona Intl

Wed 4/15

9:00 pm-10:59 pm

1 stop22h 59m

$345

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Thu 4/16

8:32 am-6:06 pm

1 stop12h 34m

Kona Intl

Tue 4/21

7:10 am-10:59 pm

1 stop12h 49m

$356

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 4/20

6:00 am-1:39 pm

1 stop10h 39m

Kona Intl

Mon 4/27

6:00 am-9:10 pm

1 stop12h 10m

$361

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 2/24

12:02 pm-10:57 pm

1 stop12h 55m

Kona Intl

Wed 2/25

10:17 pm-11:08 am

1 stop10h 51m

$363

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Sun 3/8

6:00 am-2:53 pm

1 stop11h 53m

Kona Intl

Thu 3/12

7:40 pm-12:23 pm

1 stop13h 43m

$366

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 42 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.

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 January 22, 2026.
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
11,775 reviews

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,775 reviews
Alaska Airlines
8.0
Very good
11,775 reviews

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Southwest
8.0
Very good
4,267 reviews
Alaska Airlines
8.0
Very good
11,775 reviews

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Delta
7.9
Good
8,087 reviews
Alaska Airlines
8.0
Very good
11,775 reviews

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
United Airlines
7.4
Good
9,192 reviews
Alaska Airlines
8.0
Very good
11,775 reviews

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
American Airlines
7.2
Good
11,173 reviews
Alaska Airlines
8.0
Very good
11,775 reviews

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

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 38m. Your travel time can differ by up to 7h 14m. 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 Southwest, which is currently one of the cheapest options available, starting at $155. Alaska Airlines flights start at $174 while deals on United Airlines start at $198 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

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Ontario to The Big Island

Discover the top 5 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 January 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$154Average$329FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$277Average$452FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$277Average$536FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$308Average$504FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$337Average$558FlexibilityNo cancel feeOn-time75%

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