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The Big Island

$149+ 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — KOA
Apr 8 — Apr 151
Tue 4/8
Tue 4/15
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 April 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$315
(Delta)

One-way from

$149
(United Airlines)

Popular in

December

Cheapest in

February

Average price

$349
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. 4% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 3, 2025.

This Delta deal was found by Cheapflights users on 4/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/156:00 amONT - KOA
1 stop14h 31mDelta
Sun 5/189:39 pmKOA - ONT
1 stop10h 25mDelta
Deal found 4/1$315
This American Airlines deal was found by Cheapflights users on 4/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/184:35 pmONT - KOA
1 stop25h 02mAmerican Airlines
Sun 5/259:10 pmKOA - ONT
1 stop8h 44mAmerican Airlines
Deal found 4/2$369
This Alaska Airlines deal was found by Cheapflights users on 4/2. 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 7/222:21 pmONT - KOA
1 stop10h 43mAlaska Airlines
Wed 7/3012:10 pmKOA - ONT
1 stop8h 49mAlaska Airlines
Deal found 4/2$392
This United Airlines deal was found by Cheapflights users on 4/2. 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.
Tue 5/276:00 amONT - KOA
1 stop8h 26mUnited Airlines
Mon 6/210:50 pmKOA - ONT
1 stop10h 24mUnited Airlines
Deal found 4/2$397
This Hawaiian Airlines deal was found by Cheapflights users on 4/2. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/289:45 amONT - ITO
1 stop9h 01mHawaiian Airlines
Mon 5/56:00 amITO - ONT
1 stop12h 50mHawaiian Airlines
Deal found 4/2$442
This Southwest deal was found by Cheapflights users on 4/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/196:20 amONT - KOA
1 stop8h 50mSouthwest
Sun 4/278:30 pmKOA - ONT
1 stop10h 20mSouthwest
Deal found 4/2$472
This Alaska Airlines deal was found by Cheapflights users on 4/2. 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.
Mon 9/158:35 amONT - ITO
1 stop12h 40mAlaska Airlines
Mon 9/227:49 amITO - ONT
1 stop10h 21mAlaska Airlines
Deal found 4/2$558
This United Airlines deal was found by Cheapflights users on 4/2. 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.
Mon 9/151:42 pmONT - ITO
2 stops28h 36mUnited Airlines
Mon 9/228:39 amITO - ONT
2 stops20h 59mUnited Airlines
Deal found 4/2$559
This Southwest deal was found by Cheapflights users on 4/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/68:30 amONT - ITO
2 stops14h 45mSouthwest
Tue 4/86:00 amITO - ONT
2 stops11h 10mSouthwest
Deal found 4/2$594
This Expedia deal was found by Cheapflights users on 4/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/196:00 amONT - MUE
2 stops18h 00mMultiple Airlines
Mon 5/267:25 pmMUE - ONT
2 stops12h 32mMultiple Airlines
Deal found 4/2$793
This American Airlines deal was found by Cheapflights users on 4/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:47 amONT - ITO
3 stops15h 31mMultiple Airlines
Wed 12/106:49 pmITO - ONT
2 stops14h 52mMultiple Airlines
Deal found 4/2$907
This American Airlines deal was found by Cheapflights users on 4/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1212:59 amONT - ITO
2 stops18h 55mAmerican Airlines
Thu 6/268:00 pmITO - ONT
2 stops19h 12mAmerican Airlines
Deal found 4/3$3,447

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 April 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 5/15

6:00 am-5:31 pm

1 stop14h 31m

Kona Intl

Sun 5/18

9:39 pm-11:04 am

1 stop10h 25m

$315

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Sun 5/18

4:35 pm-2:37 pm

1 stop25h 02m

Kona Intl

Sun 5/25

9:10 pm-8:54 am

1 stop8h 44m

$369

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 5/27

6:00 am-11:26 am

1 stop8h 26m

Kona Intl

Mon 6/2

10:50 pm-12:14 pm

1 stop10h 24m

$397

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Wed 6/4

9:50 am-5:28 pm

1 stop10h 38m

Kona Intl

Wed 6/4

9:44 pm-10:57 am

1 stop10h 13m

$407

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Sat 4/19

6:20 am-12:10 pm

1 stop8h 50m

Kona Intl

Sun 4/27

8:30 pm-9:50 am

1 stop10h 20m

$472

OntarioHilo

ONT - ITO

ONTITO

Ontario

Wed 4/30

4:29 pm-7:10 pm

2 stops29h 41m

Hilo Intl

Wed 5/7

3:05 pm-10:51 am

2 stops16h 46m

$583

OntarioHilo

ONT - ITO

ONTITO

Ontario

Sun 4/6

8:30 am-8:15 pm

2 stops14h 45m

Hilo Intl

Tue 4/8

6:00 am-8:10 pm

2 stops11h 10m

$594

OntarioHilo

ONT - ITO

ONTITO

Ontario

Wed 4/30

9:45 am-3:45 pm

1 stop9h 00m

Hilo Intl

Wed 5/7

9:30 am-9:50 pm

1 stop9h 20m

$639

OntarioWaimea (Big Island)

ONT - MUE

ONTMUE

Ontario

Mon 5/19

6:00 am-9:00 pm

2 stops18h 00m

Waimea (Big Island) Waimea Kohala

Mon 5/26

7:25 pm-10:57 am

2 stops12h 32m

$793

OntarioHilo

ONT - ITO

ONTITO

Ontario

Fri 6/13

1:36 pm-6:29 pm

2 stops31h 53m

Hilo Intl

Thu 6/26

7:00 pm-5:43 pm

2 stops19h 43m

$846

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/2

Showing 1-10 of 20 results
1
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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 April 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.

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 April 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
9,827 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,827 reviews
Alaska Airlines
8.0
Very good
9,827 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,274 reviews
Alaska Airlines
8.0
Very good
9,827 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,897 reviews
Alaska Airlines
8.0
Very good
9,827 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,347 reviews
Alaska Airlines
8.0
Very good
9,827 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,619 reviews
Alaska Airlines
8.0
Very good
9,827 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 United Airlines, which is currently one of the cheapest options available, starting at $149. Delta flights start at $152 while deals on Alaska Airlines start at $169 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 April 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$247Average$420FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$277Average$499FlexibilityNo cancel feeOn-time63%
DeltaCheapest$281Average$369FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$283Average$499FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$340Average$534FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$348Average$534FlexibilityNo cancel feeOn-time75%

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