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Ontario

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

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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
KOA — ONT
Feb 21 — Feb 281
Sat 2/21
Sat 2/28
1 adult, Economy
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Cheap flight deals from The Big Island to Ontario

Cheapest flights from The Big Island to Ontario
Explore the most affordable flight options available from The Big Island to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 22, 2026.

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.
Tue 3/178:55 pm
KOA
-
ONT
1 stop11h 23m
Delta
Tue 3/316:00 am
ONT
-
KOA
2 stops15h 38m
Delta
Deal found 1/21$333
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2012:17 pm
KOA
-
ONT
1 stop7h 42m
Multiple Airlines
Mon 4/278:30 am
ONT
-
KOA
1 stop13h 46m
Multiple Airlines
Deal found 1/21$335
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 2/128:55 pm
KOA
-
ONT
1 stop13h 12m
Delta
Thu 2/196:00 am
ONT
-
KOA
1 stop11h 51m
Delta
Deal found 1/21$336
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/108:45 am
KOA
-
ONT
1 stop9h 10m
Multiple Airlines
Tue 3/2410:33 am
ONT
-
KOA
1 stop9h 58m
Multiple Airlines
Deal found 1/20$341
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.
Mon 3/167:40 pm
KOA
-
ONT
1 stop13h 43m
Delta
Tue 3/316:00 am
ONT
-
KOA
2 stops15h 38m
Delta
Deal found 1/21$342
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 3/1010:15 pm
KOA
-
ONT
2 stops15h 13m
Delta
Tue 3/246:00 am
ONT
-
KOA
2 stops15h 38m
Delta
Deal found 1/20$347
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.
Tue 3/177:09 am
KOA
-
ONT
1 stop10h 46m
Multiple Airlines
Tue 3/3110:33 am
ONT
-
KOA
1 stop9h 58m
Multiple Airlines
Deal found 1/21$361
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.
Tue 3/178:55 pm
KOA
-
ONT
1 stop11h 23m
Delta
Mon 3/306:00 am
ONT
-
KOA
2 stops15h 38m
Delta
Deal found 1/21$367
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2710:17 pm
KOA
-
ONT
1 stop10h 51m
Multiple Airlines
Wed 3/48:41 am
ONT
-
KOA
1 stop12h 36m
Multiple Airlines
Deal found 1/22$373
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.
Mon 3/167:40 pm
KOA
-
ONT
1 stop13h 43m
Delta
Mon 3/306:00 am
ONT
-
KOA
2 stops15h 38m
Delta
Deal found 1/21$376
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/512:51 pm
KOA
-
ONT
1 stop7h 37m
Multiple Airlines
Mon 2/98:13 am
ONT
-
KOA
1 stop8h 38m
Multiple Airlines
Deal found 1/21$382
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/19:59 am
ITO
-
ONT
1 stop8h 11m
Multiple Airlines
Mon 5/48:30 am
ONT
-
ITO
1 stop10h 44m
Multiple Airlines
Deal found 1/22$446

Find flight deals from The Big Island to Ontario

Keep the following information in mind while searching for The Big Island to Ontario flight deals. Data was last updated January 22, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$333
(Delta)

One-way from

$162
(Alaska Airlines)

Popular in

October

Cheapest in

August

Average price

$624
Provider with most accurate pricing for Hilo Intl-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Hilo Intl-Los Angeles flights.
Search Deals
From The Big Island to Ontario
Search Deals
One-way flight from The Big Island to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($31 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 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 The Big Island to Ontario 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 The Big Island to Ontario that are best for you.

Fly from

The Big Island

Fly to

Ontario

Route

Depart

Return

Price

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Wed 3/18

8:55 pm-11:18 am

1 stop11h 23m

Ontario

Wed 4/1

6:00 am-6:38 pm

2 stops15h 38m

$333

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Tue 3/17

8:55 pm-11:18 am

1 stop11h 23m

Ontario

Tue 3/31

6:00 am-6:38 pm

2 stops15h 38m

$333

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Tue 3/17

8:55 pm-11:18 am

1 stop11h 23m

Ontario

Wed 4/1

6:00 am-6:38 pm

2 stops15h 38m

$333

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Wed 3/18

8:55 pm-11:18 am

1 stop11h 23m

Ontario

Tue 3/31

6:00 am-6:38 pm

2 stops15h 38m

$333

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Thu 2/12

8:55 pm-12:07 pm

1 stop13h 12m

Ontario

Thu 2/19

6:00 am-3:51 pm

1 stop11h 51m

$336

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Mon 2/16

8:55 pm-12:07 pm

1 stop13h 12m

Ontario

Thu 2/19

6:00 am-3:51 pm

1 stop11h 51m

$336

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Tue 3/10

8:45 am-8:55 pm

1 stop9h 10m

Ontario

Tue 3/24

10:33 am-5:31 pm

1 stop9h 58m

$341

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Thu 2/12

8:55 pm-12:07 pm

1 stop13h 12m

Ontario

Mon 2/16

6:00 am-7:39 pm

2 stops15h 39m

$342

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Thu 2/12

8:55 pm-12:07 pm

1 stop13h 12m

Ontario

Tue 2/17

6:00 am-7:39 pm

2 stops15h 39m

$342

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Tue 3/10

7:40 pm-12:23 pm

1 stop13h 43m

Ontario

Tue 3/24

6:00 am-6:38 pm

2 stops15h 38m

$342

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 37 results
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Best time to book a flight from The Big Island to Ontario

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

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

Currently, May is the cheapest month in which you can book a flight from The Big Island to Ontario (average of $83). Flying from The Big Island to Ontario in December is currently the most expensive (average of $217). 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 Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated January 22, 2026.
Peruse reviews from past customers who have flown with Southwest from The Big Island to Ontario to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,267 reviews

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,267 reviews
Southwest
8.0
Very good
4,267 reviews

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from The Big Island to Ontario. 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 into for flights to Ontario from The Big Island?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly into when you book flights from The Big Island to Ontario.

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

    Departing from The Big Island to Ontario will take you 11h 23m. The distance between The Big Island and Ontario is about 2547 mi.

  • What are the cheapest airlines to fly from The Big Island to Ontario one-way?

    $178 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Southwest and Alaska Airlines, with prices starting from $180 and $242, respectively.

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

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

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

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

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

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

    Currently, May is the cheapest month in which you can book a flight from The Big Island to Ontario (average of $83). Flying from The Big Island to Ontario in December is currently the most expensive (average of $217). 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 The Big Island to Ontario

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

Discover the top airline that operate flights from The Big Island to Ontario. 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
SouthwestCheapest$319Average$485FlexibilityNo cancel feeOn-time63%

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