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The Big Island

$186+ 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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — KOA
may. 19 — may. 261
lun. 5/19
lun. 5/26
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 mayo 14, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$396
(Alaska Airlines)

One-way from

$186
(Alaska Airlines)

Popular in

June

Cheapest in

February

Average price

$364
Provider with most accurate pricing for Los Angeles-Kona Intl flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Kona Intl flights.
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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. 11% potential increase in price ($51 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in May 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 mayo 14, 2025.

This Alaska Airlines deal was found by Cheapflights users on 5/14. 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.
lun. 8/256:00 amONT - KOA
1 stop12h 55mAlaska Airlines
jue. 9/48:00 amKOA - ONT
1 stop10h 10mAlaska Airlines
Deal found 5/14$377
This Delta deal was found by Cheapflights users on 5/14. 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.
mié. 8/277:00 amONT - KOA
1 stop13h 38mDelta
vie. 9/59:45 pmKOA - ONT
1 stop10h 08mDelta
Deal found 5/14$381
This Southwest deal was found by Cheapflights users on 5/14. 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.
sáb. 10/411:10 amONT - KOA
2 stops10h 00mSouthwest
mié. 10/86:00 amKOA - ONT
2 stops9h 40mSouthwest
Deal found 5/14$521
This Hawaiian Airlines deal was found by Cheapflights users on 5/13. 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.
mar. 10/711:07 amONT - ITO
1 stop9h 45mHawaiian Airlines
mar. 10/147:55 amITO - ONT
1 stop9h 42mHawaiian Airlines
Deal found 5/13$548
This United Airlines deal was found by Cheapflights users on 5/13. 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.
vie. 9/51:42 pmONT - KOA
1 stop8h 42mUnited Airlines
lun. 9/1511:00 pmKOA - ONT
1 stop10h 13mUnited Airlines
Deal found 5/13$567
This Hawaiian Airlines deal was found by Cheapflights users on 5/13. 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.
mié. 5/149:45 amONT - KOA
1 stop10h 42mHawaiian Airlines
mié. 5/2111:18 amKOA - ONT
1 stop7h 37mHawaiian Airlines
Deal found 5/13$582
This Alaska Airlines deal was found by Cheapflights users on 5/13. 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.
mar. 8/56:00 amONT - ITO
2 stops14h 38mAlaska Airlines
mar. 8/129:34 amITO - ONT
1 stop8h 53mAlaska Airlines
Deal found 5/13$591
This United Airlines deal was found by Cheapflights users on 5/13. 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.
sáb. 8/91:19 pmONT - ITO
2 stops31h 19mUnited Airlines
mar. 8/127:00 pmITO - ONT
2 stops19h 43mUnited Airlines
Deal found 5/13$711
This United Airlines deal was found by Cheapflights users on 5/12. 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.
mié. 5/286:00 amONT - ITO
2 stops12h 46mMultiple Airlines
dom. 6/15:35 pmITO - ONT
3 stops15h 39mMultiple Airlines
Deal found 5/12$1,354
This American Airlines deal was found by Cheapflights users on 5/13. 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.
jue. 6/1212:59 amONT - ITO
2 stops18h 55mAmerican Airlines
jue. 6/268:00 pmITO - ONT
2 stops19h 12mAmerican Airlines
Deal found 5/13$3,367
This Delta deal was found by Cheapflights users on 5/13. 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.
jue. 6/1911:25 amONT - ITO
2 stops13h 20mDelta
dom. 6/224:25 pmITO - ONT
2 stops13h 27mDelta
Deal found 5/13$5,112

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 mayo 14, 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

lun. 8/4

2:22 pm-10:04 pm

1 stop10h 42m

Kona Intl

mar. 8/19

12:10 pm-11:59 pm

1 stop8h 49m

$396

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

mar. 7/8

1:19 pm-7:21 pm

1 stop9h 02m

Kona Intl

mar. 7/15

10:15 pm-12:14 pm

2 stops10h 59m

$472

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

lun. 6/16

6:25 am-5:33 pm

1 stop14h 08m

Kona Intl

vie. 6/20

9:40 pm-2:25 pm

1 stop13h 45m

$511

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

mié. 6/25

8:30 am-5:55 pm

2 stops12h 25m

Kona Intl

mié. 7/2

10:00 am-10:50 pm

2 stops9h 50m

$573

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

mar. 5/20

9:50 am-2:50 pm

1 stop8h 00m

Kona Intl

vie. 5/23

10:45 am-9:55 pm

1 stop8h 10m

$579

OntarioHilo

ONT - ITO

ONTITO

Ontario

mar. 8/5

6:00 am-5:38 pm

2 stops14h 38m

Hilo Intl

mar. 8/12

9:34 am-9:27 pm

1 stop8h 53m

$591

OntarioHilo

ONT - ITO

ONTITO

Ontario

mar. 8/5

9:00 am-3:55 pm

1 stop9h 55m

Hilo Intl

mar. 8/12

9:34 am-9:27 pm

1 stop8h 53m

$709

OntarioHilo

ONT - ITO

ONTITO

Ontario

sáb. 8/9

1:19 pm-5:38 pm

2 stops31h 19m

Hilo Intl

mar. 8/12

7:00 pm-5:43 pm

2 stops19h 43m

$711

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

dom. 8/3

12:59 am-1:52 pm

2 stops15h 53m

Kona Intl

vie. 8/15

9:40 pm-4:24 pm

1 stop15h 44m

$795

OntarioHilo

ONT - ITO

ONTITO

Ontario

mié. 5/28

6:00 am-3:46 pm

2 stops12h 46m

Hilo Intl

dom. 6/1

5:35 pm-12:14 pm

3 stops15h 39m

$1,354

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/13

Showing 1-10 of 24 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 mayo 14, 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 mayo 14, 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

8.2

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.1

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

8.2

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.1

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
4,290 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.2

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.1

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
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.2

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,434 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.2

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.1

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
8,730 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.2

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.1

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 $186. Hawaiian Airlines flights start at $212 while deals on United Airlines start at $269 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.

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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 mayo 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$247Average$457FlexibilityNo cancel feeOn-time69%
DeltaCheapest$276Average$381FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$277Average$565FlexibilityNo cancel feeOn-time63%
Hawaiian AirlinesCheapest$283Average$514FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$340Average$534FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$348Average$540FlexibilityNo cancel feeOn-time75%

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