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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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — KOA
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$361
(Alaska Airlines)

One-way from

$176
(Alaska Airlines)

Popular in

June

Cheapest in

February

Average price

$506
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. 12% potential increase in price ($58 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 July 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 July 3, 2025.

This SmartFares deal was found by Cheapflights users on 7/3. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/253:06 pmONT - KOA
1 stop10h 03mHawaiian Airlines
Mon 9/299:32 pmKOA - ONT
1 stop10h 12mHawaiian Airlines
Deal found 7/3$341
This Alaska Airlines deal was found by Cheapflights users on 7/1. 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 10/81:31 pmONT - KOA
1 stop11h 09mAlaska Airlines
Wed 10/1511:57 amKOA - ONT
1 stop8h 52mAlaska Airlines
Deal found 7/1$361
This Delta deal was found by Cheapflights users on 7/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/186:00 amONT - KOA
1 stop14h 34mDelta
Mon 8/259:47 pmKOA - ONT
1 stop10h 03mDelta
Deal found 7/2$364
This Southwest deal was found by Cheapflights users on 7/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/88:05 amONT - KOA
1 stop8h 00mSouthwest
Fri 9/129:15 amKOA - ONT
2 stops10h 30mSouthwest
Deal found 7/1$366
This Alaska Airlines deal was found by Cheapflights users on 7/2. 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 8/196:00 amONT - ITO
2 stops14h 38mAlaska Airlines
Wed 8/277:47 amITO - ONT
1 stop10h 23mAlaska Airlines
Deal found 7/2$383
This lastminute.com deal was found by Cheapflights users on 7/2. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/199:00 amONT - ITO
1 stop9h 55mHawaiian Airlines
Wed 8/277:47 amITO - ONT
1 stop10h 23mHawaiian Airlines
Deal found 7/2$426
This United Airlines deal was found by Cheapflights users on 7/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/36:00 amONT - KOA
1 stop8h 36mUnited Airlines
Wed 9/311:00 pmKOA - ONT
1 stop10h 13mUnited Airlines
Deal found 7/2$456
This Southwest deal was found by Cheapflights users on 7/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/248:00 amONT - ITO
2 stops11h 00mSouthwest
Sun 10/266:00 amITO - ONT
2 stops10h 50mSouthwest
Deal found 7/3$564
This United Airlines deal was found by Cheapflights users on 7/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/251:42 pmONT - ITO
2 stops21h 25mUnited Airlines
Wed 9/38:36 amITO - ONT
2 stops30h 01mUnited Airlines
Deal found 7/1$684

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 July 3, 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

Thu 9/25

3:06 pm-10:09 pm

1 stop10h 03m

Kona Intl

Mon 9/29

9:32 pm-10:44 am

1 stop10h 12m

$341

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Thu 9/18

3:06 pm-10:09 pm

1 stop10h 03m

Kona Intl

Mon 9/22

9:32 pm-10:44 am

1 stop10h 12m

$361

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 8/18

6:00 am-5:34 pm

1 stop14h 34m

Kona Intl

Mon 8/25

9:47 pm-10:50 am

1 stop10h 03m

$364

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 9/8

8:05 am-1:05 pm

1 stop8h 00m

Kona Intl

Fri 9/12

9:15 am-10:45 pm

2 stops10h 30m

$366

OntarioHilo

ONT - ITO

ONTITO

Ontario

Tue 8/19

6:00 am-5:38 pm

2 stops14h 38m

Hilo Intl

Wed 8/27

7:47 am-9:10 pm

1 stop10h 23m

$383

OntarioHilo

ONT - ITO

ONTITO

Ontario

Tue 8/19

9:00 am-3:55 pm

1 stop9h 55m

Hilo Intl

Wed 8/27

7:47 am-9:10 pm

1 stop10h 23m

$426

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Wed 9/3

6:00 am-11:36 am

1 stop8h 36m

Kona Intl

Wed 9/3

11:00 pm-12:13 pm

1 stop10h 13m

$456

OntarioHilo

ONT - ITO

ONTITO

Ontario

Mon 8/25

1:42 pm-8:07 am

2 stops21h 25m

Hilo Intl

Wed 9/3

8:36 am-5:37 pm

2 stops30h 01m

$684

OntarioHilo

ONT - ITO

ONTITO

Ontario

Fri 7/11

5:59 pm-4:54 pm

2 stops25h 55m

Hilo Intl

Thu 7/24

4:25 pm-8:47 am

2 stops13h 22m

$814

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 9/23

10:09 am-5:43 pm

1 stop10h 34m

$176

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 19 results
1
2

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 July 3, 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 July 3, 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

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

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

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

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
4,266 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

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

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

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
2,545 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

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
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

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.

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

    To fly one-way, consider booking your trip with Alaska Airlines, which is currently one of the cheapest options available, starting at $176. Southwest flights start at $186 while deals on Delta start at $206 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, 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$233Average$368FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$247Average$448FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$251Average$513FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$277Average$567FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$340Average$534FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$348Average$601FlexibilityNo cancel feeOn-time75%

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