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Cheap flights from Ontario to The Big Island from $141

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to The Big Island departing on 1/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Ontario to The Big Island

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
8:13 am - 3:50 pmONT-KOA
9h 37m1 stop
Alaska Airlines Logo
6:00 am - 10:28 pmKOA-ONT
14h 28m1 stop
$282Alaska Airlines
Find Deal
Thu, Jan 29 - Tue, Feb 3
Delta Logo
6:40 am - 6:21 pmONT-KOA
13h 41m1 stop
Delta Logo
8:43 pm - 11:13 amKOA-ONT
12h 30m1 stop
$291Delta
Find Deal
Thu, Dec 4 - Wed, Dec 10
Delta Logo
6:45 am - 6:55 pmONT-KOA
14h 10m1 stop
Delta Logo
8:45 pm - 12:34 pmKOA-ONT
13h 49m2 stops
$297Delta
Find Deal
Tue, Jan 6 - Mon, Jan 12
Alaska Airlines Logo
11:59 am - 9:40 pmONT-KOA
11h 41m1 stop
Alaska Airlines Logo
10:05 pm - 9:55 amKOA-ONT
9h 50m1 stop
$333Alaska Airlines
Find Deal
Tue, Nov 18 - Sun, Nov 23
Alaska Airlines Logo
12:13 pm - 9:30 pmONT-KOA
11h 17m1 stop
Alaska Airlines Logo
9:10 pm - 11:19 amKOA-ONT
12h 09m1 stop
$336Alaska Airlines
Find Deal
Thu, Dec 4 - Thu, Dec 11
Alaska Airlines Logo
12:13 pm - 9:30 pmONT-KOA
11h 17m1 stop
Alaska Airlines Logo
9:10 pm - 11:19 amKOA-ONT
12h 09m1 stop
$344Alaska Airlines
Find Deal
Mon, Dec 8 - Sun, Dec 14
Delta Logo
6:40 am - 6:21 pmONT-KOA
13h 41m1 stop
Delta Logo
8:43 pm - 10:47 pmKOA-ONT
24h 04m1 stop
$348Delta
Find Deal
Thu, Dec 4 - Fri, Dec 12
Delta Logo
6:40 am - 6:21 pmONT-KOA
13h 41m1 stop
Delta Logo
8:43 pm - 11:13 amKOA-ONT
12h 30m1 stop
$354Delta
Find Deal
Tue, Dec 2 - Wed, Dec 10
Southwest Logo
8:55 am - 6:10 pmONT-KOA
11h 15m2 stops
Southwest Logo
9:15 pm - 9:50 amKOA-ONT
10h 35m2 stops
$428Southwest
Find Deal
Wed, Nov 5 - Thu, Nov 13
Southwest Logo
8:55 am - 6:10 pmONT-KOA
11h 15m2 stops
Southwest Logo
9:15 pm - 12:10 pmKOA-ONT
12h 55m1 stop
$434Southwest
Find Deal
Wed, Nov 5 - Mon, Nov 10

Southwest flights from Ontario to The Big Island

Our best Southwest deals on Ontario to The Big Island flight tickets
Southwest
Nov 5
ONT8:55 amOntario
11h 15m
2 stops
KOA6:10 pmKona Intl
Nov 13
KOA9:15 pmKona Intl
10h 35m
2 stops
ONT9:50 amOntario
$428
Find similar
Southwest
Nov 5
ONT8:55 amOntario
11h 15m
2 stops
KOA6:10 pmKona Intl
Nov 10
KOA9:15 pmKona Intl
12h 55m
1 stop
ONT12:10 pmOntario
$434
Find similar
Southwest
Oct 25
ONT8:00 amOntario
13h 10m
2 stops
ITO6:10 pmHilo Intl
Dec 15
ITO8:00 amHilo Intl
9h 30m
2 stops
ONT7:30 pmOntario
$564
Find similar

Alaska Airlines flights from Ontario to The Big Island

Our best Alaska Airlines deals on Ontario to The Big Island flight tickets
Alaska Airlines
Jan 29
ONT8:13 amOntario
9h 37m
1 stop
KOA3:50 pmKona Intl
Feb 3
KOA6:00 amKona Intl
14h 28m
1 stop
ONT10:28 pmOntario
$282
Find similar
Alaska Airlines
Nov 18
ONT11:59 amOntario
11h 41m
1 stop
KOA9:40 pmKona Intl
Nov 23
KOA10:05 pmKona Intl
9h 50m
1 stop
ONT9:55 amOntario
$333
Find similar
Alaska Airlines
Dec 4
ONT12:13 pmOntario
11h 17m
1 stop
KOA9:30 pmKona Intl
Dec 11
KOA9:10 pmKona Intl
12h 09m
1 stop
ONT11:19 amOntario
$336
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated October 16, 2025.
Use the filters below to find and compare flights from Ontario to The Big Island that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Thu 1/29

8:13 am-3:50 pm

1 stop9h 37m

Kona Intl

Tue 2/3

6:00 am-10:28 pm

1 stop14h 28m

$282

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Thu 12/4

6:40 am-6:21 pm

1 stop13h 41m

Kona Intl

Wed 12/10

8:43 pm-11:13 am

1 stop12h 30m

$291

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 1/6

6:45 am-6:55 pm

1 stop14h 10m

Kona Intl

Mon 1/12

8:45 pm-12:34 pm

2 stops13h 49m

$297

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 11/18

11:59 am-9:40 pm

1 stop11h 41m

Kona Intl

Sun 11/23

10:05 pm-9:55 am

1 stop9h 50m

$333

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Thu 12/4

12:13 pm-9:30 pm

1 stop11h 17m

Kona Intl

Thu 12/11

9:10 pm-11:19 am

1 stop12h 09m

$336

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 12/8

12:13 pm-9:30 pm

1 stop11h 17m

Kona Intl

Sun 12/14

9:10 pm-11:19 am

1 stop12h 09m

$344

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Thu 12/4

6:40 am-6:21 pm

1 stop13h 41m

Kona Intl

Fri 12/12

8:43 pm-10:47 pm

1 stop24h 04m

$348

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 12/2

6:40 am-6:21 pm

1 stop13h 41m

Kona Intl

Wed 12/10

8:43 pm-11:13 am

1 stop12h 30m

$354

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Wed 11/5

8:55 am-6:10 pm

2 stops11h 15m

Kona Intl

Thu 11/13

9:15 pm-9:50 am

2 stops10h 35m

$428

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Wed 11/5

8:55 am-6:10 pm

2 stops11h 15m

Kona Intl

Mon 11/10

9:15 pm-12:10 pm

1 stop12h 55m

$434

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to The Big Island from

How to get the cheapest flight ticket from Ontario to The Big Island

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to The Big Island?

The month of April is, on average, the cheapest month to fly to The Big Island from Ontario, with most prices found around $354. If you’re not able to fly to The Big Island in April, then February is your next best option. Flight prices from Ontario to The Big Island during February average around $365.

What is the cheapest day to depart on your flight to The Big Island?

The cheapest day to depart from Ontario to The Big Island is on a Sunday when prices can be found for as low as $376. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Ontario to The Big Island for around $506.

What is the cheapest time of day to depart on your flight to The Big Island?

The cheapest time of day to fly to The Big Island is in the afternoon when flights can be purchased for as low as $104. Flights to The Big Island are more costly at noon, with an average ticket price of $462. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to The Big Island?

You are more likely to see cheaper flights to The Big Island from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to The Big Island for around $454 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to The Big Island from Ontario for as low as $318 on momondo.

Can stopping save me money on Ontario to The Big Island flights?

No. A direct flight is the cheapest option for a flight between Ontario to The Big Island.

Cheap Ontario to The Big Island flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to The Big Island

Direct flights

None
There are no direct flights from Ontario to The Big Island. There are no popular flight routes from Ontario to The Big Island.
Search flight deals

  • When did momondo last update prices for flights from Ontario Airport to The Big Island?

    Prices for flights from Ontario Airport to The Big Island are updated daily.

  • How many operators does momondo search for flights from Ontario Airport to The Big Island?

  • How old do you have to be to fly from Ontario Airport to The Big Island?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to The Big Island.

  • What documentation or ID do you need to fly to The Big Island?

    The required travel and health documents for your The Big Island trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at The Big Island. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Ontario to The Big Island?

Best airlines flying from Ontario to The Big Island

Compare and see reviews for airlines that fly from Ontario to The Big Island with momondo
Airline
Rating
Free Cancellation
Price
Hawaiian AirlinesPriceFrom $232Free CancellationRating
7.8
2,781 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $233Free CancellationRating
7.9
7,982 reviews
Search Delta flights
United AirlinesPriceFrom $265Free CancellationRating
7.4
8,982 reviews
Search United Airlines flights
SouthwestPriceFrom $277Free CancellationRating
8.0
4,240 reviews
Search Southwest flights
American AirlinesPriceFrom $308Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $332Free CancellationRating
8.0
11,102 reviews
Search Alaska Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to The Big Island?

It is quick and easy to find Ontario to The Big Island flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to The Big Island that suits you.

Can I find flights from Ontario to The Big Island with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ontario to The Big Island flights to just show those with flexible booking policies.

How can momondo help me find flights from Ontario to The Big Island?

Once you have performed a search for Ontario to The Big Island flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ontario to The Big Island right now. Can momondo alert me if prices change?

Price alerts on flights to The Big Island from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your The Big Island trip

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Find better results for your trip to The Big Island

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