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The Big Island

$169+ 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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — KOA
Jun 23 — Jun 301
Mon 6/23
Mon 6/30
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 June 18, 2025.

Round-trip from

$351
(CheapTickets.ch)

One-way from

$169
(KAYAK)

Popular in

June

Cheapest in

February

Average price

$520
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 June 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 June 18, 2025.

This CheapTickets.ch deal was found by Cheapflights users on 6/18. 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 CheapTickets.ch is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2910:09 amONT - KOA
1 stop9h 34mHawaiian Airlines
Thu 10/911:57 amKOA - ONT
1 stop8h 52mHawaiian Airlines
Deal found 6/18$351
This Alaska Airlines deal was found by Cheapflights users on 6/17. 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.
Thu 10/309:45 amONT - KOA
1 stop10h 46mAlaska Airlines
Mon 11/37:17 amKOA - ONT
1 stop7h 57mAlaska Airlines
Deal found 6/17$352
This Delta deal was found by Cheapflights users on 6/17. 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 8/266:00 amONT - KOA
1 stop14h 34mDelta
Mon 9/19:47 pmKOA - ONT
1 stop10h 03mDelta
Deal found 6/17$361
This Southwest deal was found by Cheapflights users on 6/17. 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.
Wed 12/36:40 amONT - KOA
1 stop8h 05mSouthwest
Wed 12/108:00 amKOA - ONT
2 stops9h 30mSouthwest
Deal found 6/17$366
This Alaska Airlines deal was found by Cheapflights users on 6/16. 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 12/37:00 amONT - ITO
2 stops14h 18mAlaska Airlines
Fri 12/56:00 amITO - ONT
2 stops11h 47mAlaska Airlines
Deal found 6/16$372
This Hawaiian Airlines deal was found by Cheapflights users on 6/16. 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.
Sat 11/19:45 amONT - ITO
1 stop10h 09mHawaiian Airlines
Wed 11/57:42 amITO - ONT
1 stop7h 32mHawaiian Airlines
Deal found 6/16$430
This United Airlines deal was found by Cheapflights users on 6/17. 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.
Tue 9/231:42 pmONT - KOA
1 stop8h 42mUnited Airlines
Tue 9/3010:05 pmKOA - ONT
1 stop11h 08mUnited Airlines
Deal found 6/17$542
This United Airlines deal was found by Cheapflights users on 6/16. 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 9/101:42 pmONT - ITO
2 stops30h 57mUnited Airlines
Tue 9/168:36 amITO - ONT
2 stops30h 01mUnited Airlines
Deal found 6/16$583
This Delta deal was found by Cheapflights users on 6/16. 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 12/15:51 pmONT - ITO
2 stops22h 31mDelta
Mon 12/86:49 pmITO - ONT
2 stops14h 01mDelta
Deal found 6/16$814
This United Airlines deal was found by Cheapflights users on 6/16. 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 9/101:42 pmONT - ITO
2 stops11h 35mMultiple Airlines
Tue 9/165:26 pmITO - ONT
3 stops15h 47mMultiple Airlines
Deal found 6/16$1,244
This American Airlines deal was found by Cheapflights users on 6/15. 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.
Mon 9/226:10 amONT - ITO
3 stops17h 20mAmerican Airlines
Mon 9/297:00 pmITO - ONT
2 stops13h 56mAmerican Airlines
Deal found 6/15$1,316

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 June 18, 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

Sun 9/14

3:04 pm-10:09 pm

1 stop10h 05m

Kona Intl

Thu 9/18

8:00 am-9:10 pm

1 stop10h 10m

$357

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 8/26

6:00 am-5:34 pm

1 stop14h 34m

Kona Intl

Mon 9/1

9:47 pm-10:50 am

1 stop10h 03m

$361

OntarioHilo

ONT - ITO

ONTITO

Ontario

Wed 9/10

6:00 am-5:39 pm

2 stops14h 39m

Hilo Intl

Tue 9/16

5:26 pm-10:44 am

2 stops14h 18m

$372

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Sun 7/13

6:00 am-1:40 pm

1 stop10h 40m

Kona Intl

Tue 7/22

9:30 pm-11:05 am

1 stop10h 35m

$427

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Fri 9/12

9:55 am-6:10 pm

2 stops11h 15m

Kona Intl

Tue 9/16

9:15 am-8:15 pm

1 stop8h 00m

$434

OntarioHilo

ONT - ITO

ONTITO

Ontario

Wed 9/10

8:35 am-2:26 pm

1 stop8h 51m

Hilo Intl

Tue 9/16

9:43 am-9:10 pm

1 stop8h 27m

$517

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 7/8

1:19 pm-7:21 pm

1 stop9h 02m

Kona Intl

Thu 7/17

10:50 pm-12:14 pm

1 stop10h 24m

$547

OntarioHilo

ONT - ITO

ONTITO

Ontario

Wed 9/10

1:42 pm-5:39 pm

2 stops30h 57m

Hilo Intl

Tue 9/16

8:36 am-5:37 pm

2 stops30h 01m

$583

OntarioHilo

ONT - ITO

ONTITO

Ontario

Wed 7/16

6:25 am-9:45 pm

2 stops18h 20m

Hilo Intl

Tue 7/29

4:25 pm-1:34 pm

2 stops18h 09m

$894

OntarioHilo

ONT - ITO

ONTITO

Ontario

Wed 9/10

1:42 pm-10:17 pm

2 stops11h 35m

Hilo Intl

Tue 9/16

5:26 pm-12:13 pm

3 stops15h 47m

$1,244

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/17

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.

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 June 18, 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 June 18, 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

Food

7.1

Crew

8.5

Comfort

7.8

Boarding

8.1

Overall

8.0

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

Food

7.1

Crew

8.5

Comfort

7.8

Boarding

8.1

Overall

8.0

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
4,280 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Comfort

7.8

Boarding

8.1

Overall

8.0

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
7,964 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Comfort

7.8

Boarding

8.1

Overall

8.0

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
7.8
Good
2,507 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Comfort

7.8

Boarding

8.1

Overall

8.0

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
8,810 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Comfort

7.8

Boarding

8.1

Overall

8.0

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 Hawaiian Airlines, which is currently one of the cheapest options available, starting at $169. Alaska Airlines flights start at $170 while deals on United Airlines start at $231 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 - Hilo Intl, Ontario - Kona 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 June 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$220Average$364FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$247Average$455FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$277Average$567FlexibilityNo cancel feeOn-time63%
Hawaiian AirlinesCheapest$283Average$512FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$340Average$534FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$351Average$575FlexibilityNo cancel feeOn-time75%

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