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The Big Island

$139+ 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 3/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — KOA
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$283
(Delta)

One-way from

$139
(Southwest)

Popular in

December

Cheapest in

April

Average price

$328
Provider with most accurate pricing for Los Angeles-Kona Intl flight deals.
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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. 6% potential increase in price ($27 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 20, 2025.

This Delta deal was found by Cheapflights users on 2/19. 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.
Thu 9/47:00 amONT - KOA
1 stop13h 38mDelta
Thu 9/49:45 pmKOA - ONT
1 stop12h 38mDelta
Deal found 2/19$278
This American Airlines deal was found by Cheapflights users on 2/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/101:34 pmONT - KOA
1 stop27h 08mAmerican Airlines
Wed 9/1711:20 pmKOA - ONT
1 stop9h 09mAmerican Airlines
Deal found 2/20$349
This Netflights deal was found by Cheapflights users on 2/19. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/169:50 amONT - KOA
1 stop10h 36mAlaska Airlines
Thu 9/187:00 amKOA - ONT
1 stop11h 55mAlaska Airlines
Deal found 2/19$368
This United Airlines deal was found by Cheapflights users on 2/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/126:00 amONT - KOA
1 stop8h 48mUnited Airlines
Wed 3/1210:55 pmKOA - ONT
1 stop7h 59mUnited Airlines
Deal found 2/19$456
This Southwest deal was found by Cheapflights users on 2/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/246:40 amONT - KOA
1 stop8h 20mSouthwest
Sat 3/16:10 amKOA - ONT
2 stops10h 35mSouthwest
Deal found 2/20$466
This Southwest deal was found by Cheapflights users on 2/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1311:15 amONT - ITO
2 stops12h 00mSouthwest
Wed 3/196:00 amITO - ONT
2 stops10h 00mSouthwest
Deal found 2/19$514
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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.
Fri 3/79:45 amONT - ITO
1 stop8h 23mAlaska Airlines
Tue 3/1110:24 amITO - ONT
1 stop7h 31mAlaska Airlines
Deal found 2/20$564
This United Airlines deal was found by Cheapflights users on 2/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/76:00 amONT - ITO
2 stops28h 06mUnited Airlines
Tue 3/118:25 amITO - ONT
2 stops22h 29mUnited Airlines
Deal found 2/20$711
This Hawaiian Airlines deal was found by Cheapflights users on 2/20. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/138:50 amONT - ITO
1 stop8h 47mHawaiian Airlines
Sun 3/3010:24 amITO - ONT
1 stop7h 31mHawaiian Airlines
Deal found 2/20$751
This StudentUniverse deal was found by Cheapflights users on 2/20. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/76:00 amONT - MUE
2 stops17h 00mMultiple Airlines
Tue 3/117:17 amMUE - ONT
2 stops10h 38mMultiple Airlines
Deal found 2/20$786
This Delta deal was found by Cheapflights users on 2/20. 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.
Mon 5/55:30 pmONT - ITO
2 stops27h 31mDelta
Mon 5/194:16 pmITO - ONT
2 stops17h 57mDelta
Deal found 2/20$794
This United deal was found by Cheapflights users on 2/19. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/136:00 amONT - ITO
2 stops11h 37mMultiple Airlines
Mon 3/175:35 pmITO - ONT
2 stops13h 19mMultiple Airlines
Deal found 2/19$1,307

Find flights from Ontario to The Big Island within your budget

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 February 20, 2025.

Fly from

Ontario

Fly to

The Big Island

Route

Depart

Return

Price

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Fri 4/25

5:45 am-5:39 pm

1 stop14h 54m

Kona Intl

Sun 5/4

8:20 pm-11:05 am

1 stop11h 45m

$283

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Thu 3/6

9:45 am-5:37 pm

1 stop9h 52m

Kona Intl

Wed 3/12

8:00 am-8:55 pm

1 stop9h 55m

$370

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Wed 3/12

6:00 am-11:48 am

1 stop8h 48m

Kona Intl

Wed 3/12

10:55 pm-9:54 am

1 stop7h 59m

$456

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 2/24

6:40 am-1:00 pm

1 stop8h 20m

Kona Intl

Sat 3/1

6:10 am-6:45 pm

2 stops10h 35m

$466

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Sun 4/13

7:20 pm-2:20 pm

1 stop22h 00m

Kona Intl

Fri 4/18

9:16 pm-9:01 am

1 stop8h 45m

$502

OntarioHilo

ONT - ITO

ONTITO

Ontario

Thu 3/13

11:15 am-8:15 pm

2 stops12h 00m

Hilo Intl

Wed 3/19

6:00 am-7:00 pm

2 stops10h 00m

$514

OntarioHilo

ONT - ITO

ONTITO

Ontario

Thu 3/13

8:50 am-4:00 pm

1 stop10h 10m

Hilo Intl

Wed 3/19

8:40 am-8:55 pm

1 stop9h 15m

$574

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 4/1

8:50 am-5:27 pm

1 stop11h 37m

Kona Intl

Tue 4/8

7:00 am-9:50 pm

1 stop11h 50m

$606

OntarioHilo

ONT - ITO

ONTITO

Ontario

Fri 3/7

6:00 am-6:04 pm

2 stops14h 04m

Hilo Intl

Mon 3/10

5:35 pm-9:54 am

2 stops13h 19m

$648

OntarioHilo

ONT - ITO

ONTITO

Ontario

Fri 3/28

8:50 am-2:36 pm

1 stop8h 46m

Hilo Intl

Tue 4/1

8:40 am-8:55 pm

1 stop9h 15m

$751

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 23 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.

Travel insights for flights from Ontario to The Big Island

Get recent, data-driven insights about flights from Ontario to The Big Island including ideal travel times, pricing trends, and more.

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 $621). 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 February 20, 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.

Rainfall in The Big Island by month

Plan your trip to The Big Island by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in The Big Island ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. February is typically the driest time to visit The Big Island when rainfall is around 1.6 in.

Temperature in The Big Island by month

Plan your trip to The Big Island by taking into account the average temperature totals by month.

If weather is an important factor for your trip to The Big Island, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 71.6 F).

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 February 20, 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines 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.
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Food

7.1

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Food

7.1

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.0
Very good
9,692 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Food

7.1

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.0
Very good
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Food

7.1

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Food

7.1

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines
7.4
Good
8,766 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Food

7.1

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

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 Southwest, which is currently one of the cheapest options available, starting at $139. Delta flights start at $142 while deals on Alaska Airlines start at $176 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 (Kamuela) 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 $621). 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$247Average$410FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$248Average$486FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$275Average$534FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$277Average$475FlexibilityNo cancel feeOn-time63%
DeltaCheapest$281Average$362FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$320Average$410FlexibilityNo cancel feeOn-time75%
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