Which layover airport has the shortest connection time from Ontario to Kailua-Kona?

Honolulu (HNL) has the shortest average layover time for this route: 1h 44m.

Which layover airport offers the lowest fares from Ontario to Kailua-Kona?

Flights via Sacramento (SMF) offer the lowest average round-trip price of $429.

What is the cheapest airline that flies from Ontario to Kona Intl?

Alaska Airlines is the most popular carrier operating from Ontario to Kona Intl

Which layover airport has the shortest travel time from Ontario to Kailua-Kona?

Flights connecting via Honolulu (HNL) have the shortest average one-way travel time: 9h 25m.

What airlines fly to Kailua-Kona?

United Airlines, Alaska Airlines and Hawaiian Airlines are the top three most popular airlines that fly to Kailua-Kona from Ontario according to our data. United Airlines is the first choice among our users, with 30% of people opting to fly with this airline when traveling to Kailua-Kona. Keep in mind that there are 6 different airlines that fly to Kailua-Kona on a routine basis, so you have a few additional options to choose from.

Which airport is the most popular layover for flights between Ontario and Kailua-Kona?

Honolulu (HNL) was the most common stop: 60% of momondo users choosing 1-stop flights on this route connected there.

When did momondo last update prices for flights from Ontario Airport to Kona Intl Airport?

Prices for flights from Ontario Airport to Kona Intl Airport were last updated today.

How many operators does momondo search for flights from Ontario Airport to Kona Intl Airport?

As of December 2025, there are 6 operators available to choose from for flights from Ontario Airport to Kona Intl Airport.

How old do you have to be to fly from Ontario Airport to Kona Intl Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Kona Intl Airport.

What documentation or ID do you need to fly to Kona Intl Airport?

The necessary travel and health documents for your Kona Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$121 Cheap Flights from Ontario to Kailua-Kona in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Ontario to Kailua-Kona

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:30 am - 6:47 pm

ONT

KOA

13h 17m1 stop

9:55 pm - 1:56 pm

KOA

ONT

14h 01m1 stop

$277Delta

Mon, Jan 26 - Tue, Feb 3

6:00 am - 6:38 pm

ONT

KOA

15h 38m1 stop

8:55 pm - 11:18 am

KOA

ONT

11h 23m1 stop

$289Delta

Mon, Mar 16 - Tue, Mar 24

7:30 am - 6:47 pm

ONT

KOA

13h 17m1 stop

8:55 pm - 12:16 pm

KOA

ONT

13h 21m1 stop

$304Delta

Mon, Jan 26 - Thu, Feb 5

5:10 pm - 6:47 pm

ONT

KOA

27h 37m2 stops

9:55 pm - 1:56 pm

KOA

ONT

14h 01m1 stop

$308Delta

Sun, Jan 25 - Tue, Feb 3

7:30 am - 7:39 pm

ONT

KOA

14h 09m1 stop

7:40 pm - 12:23 pm

KOA

ONT

13h 43m1 stop

$317Delta

Wed, Mar 4 - Mon, Mar 9

7:30 am - 7:39 pm

ONT

KOA

14h 09m1 stop

9:55 pm - 4:28 pm

KOA

ONT

15h 33m2 stops

$322Delta

Wed, Mar 4 - Wed, Mar 11

12:02 pm - 10:57 pm

ONT

KOA

12h 55m1 stop

8:45 am - 10:44 pm

KOA

ONT

11h 59m1 stop

$326Alaska Airlines

Tue, Mar 3 - Wed, Mar 4

11:53 am - 9:30 pm

ONT

KOA

11h 37m1 stop

11:59 am - 10:28 pm

KOA

ONT

8h 29m1 stop

$327Multiple Airlines

Wed, Jan 21 - Wed, Jan 28

7:30 am - 7:39 pm

ONT

KOA

14h 09m1 stop

9:55 pm - 1:54 pm

KOA

ONT

13h 59m1 stop

$330Delta

Mon, Mar 2 - Wed, Mar 4

7:30 am - 6:47 pm

ONT

KOA

13h 17m1 stop

8:55 pm - 12:16 pm

KOA

ONT

13h 21m1 stop

$331Delta

Wed, Jan 28 - Thu, Feb 5

Delta flights from Ontario to Kailua-Kona

Our best Delta deals on Ontario to Kailua-Kona flight tickets

Delta

Jan 26

ONT7:30 amOntario

13h 17m

1 stop

KOA6:47 pmKona Intl

Feb 3

KOA9:55 pmKona Intl

14h 01m

1 stop

ONT1:56 pmOntario

$277

Find similar

Delta

Mar 16

ONT6:00 amOntario

15h 38m

1 stop

KOA6:38 pmKona Intl

Mar 24

KOA8:55 pmKona Intl

11h 23m

1 stop

ONT11:18 amOntario

$289

Find similar

Delta

Jan 26

ONT7:30 amOntario

13h 17m

1 stop

KOA6:47 pmKona Intl

Feb 6

KOA8:55 pmKona Intl

13h 21m

1 stop

ONT12:16 pmOntario

$304

Find similar

Alaska Airlines flights from Ontario to Kailua-Kona

Our best Alaska Airlines deals on Ontario to Kailua-Kona flight tickets

Alaska Airlines

Mar 3

ONT12:02 pmOntario

12h 55m

1 stop

KOA10:57 pmKona Intl

Mar 4

KOA8:45 amKona Intl

11h 59m

1 stop

ONT10:44 pmOntario

$326

Find similar

Alaska Airlines

Mar 5

ONT12:02 pmOntario

12h 55m

1 stop

KOA10:57 pmKona Intl

Mar 10

KOA8:13 pmKona Intl

11h 55m

1 stop

ONT11:08 amOntario

$389

Find similar

Alaska Airlines

Mar 3

ONT7:00 amOntario

17h 57m

2 stops

KOA10:57 pmKona Intl

Mar 4

KOA8:45 amKona Intl

11h 59m

1 stop

ONT10:44 pmOntario

$390

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 1/26

7:30 am-6:47 pm

1 stop13h 17m

Kona Intl

Tue 2/3

9:55 pm-1:56 pm

1 stop14h 01m

$277

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 3/16

6:00 am-6:38 pm

1 stop15h 38m

Kona Intl

Tue 3/24

8:55 pm-11:18 am

1 stop11h 23m

$289

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 1/26

7:30 am-6:47 pm

1 stop13h 17m

Kona Intl

Thu 2/5

8:55 pm-12:16 pm

1 stop13h 21m

$304

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Sun 1/25

5:10 pm-6:47 pm

2 stops27h 37m

Kona Intl

Tue 2/3

9:55 pm-1:56 pm

1 stop14h 01m

$308

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Wed 3/4

7:30 am-7:39 pm

1 stop14h 09m

Kona Intl

Mon 3/9

7:40 pm-12:23 pm

1 stop13h 43m

$317

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Wed 3/4

7:30 am-7:39 pm

1 stop14h 09m

Kona Intl

Wed 3/11

9:55 pm-4:28 pm

2 stops15h 33m

$322

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 3/3

12:02 pm-10:57 pm

1 stop12h 55m

Kona Intl

Wed 3/4

8:45 am-10:44 pm

1 stop11h 59m

$326

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Wed 1/21

11:53 am-9:30 pm

1 stop11h 37m

Kona Intl

Wed 1/28

11:59 am-10:28 pm

1 stop8h 29m

$327

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 3/2

7:30 am-7:39 pm

1 stop14h 09m

Kona Intl

Wed 3/4

9:55 pm-1:54 pm

1 stop13h 59m

$330

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Wed 1/28

7:30 am-6:47 pm

1 stop13h 17m

Kona Intl

Thu 2/5

8:55 pm-12:16 pm

1 stop13h 21m

$331

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Kailua-Kona

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

Prices

Airlines

Layovers

What is the cheapest month to fly to Kailua-Kona?

The cheapest month to fly to Kailua-Kona from Ontario is in April. Flight prices, which tend to average around $337, are often lower during this time because this is during the off-season. The month of January is another great option to travel to Kailua-Kona, with average flight prices from Ontario averaging around $365.

What is the cheapest day to depart on your flight to Kailua-Kona?

The cheapest day to depart on your flight to Kailua-Kona is on a Wednesday when prices can be found for as low as $387. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Kailua-Kona on Saturday is $521.

What is the cheapest time of day to depart on your flight to Kailua-Kona?

Flying to Kailua-Kona from Ontario at noon is the least expensive time of day to depart. momondo users have found prices as low as $304 when looking at flights departing at noon. In contrast, the most expensive time of day to depart to Kailua-Kona is in the afternoon when prices are around $441.

How far in advance should I book a flight to Kailua-Kona?

You are more likely to see cheaper flights to Kailua-Kona from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Kailua-Kona for around $459 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kailua-Kona from Ontario for as low as $318 on momondo.

When to book flights from Ontario to Kailua-Kona

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Kailua-Kona according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Kailua-Kona (ONT to KOA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Kailua-Kona

Fastest flight time	8h 48m
Direct flights	None

The fastest flight from Ontario to Kailua-Kona takes 8h 48m

There are no direct flights from Ontario to Kailua-Kona. There are no popular flight routes from Ontario to Kailua-Kona.

Search flight deals

How far is Ontario to Kona Intl by plane?
A flight from Ontario to Kona Intl will travel around 2544.2 mi. A reasonable flight in good conditions will take 8h 48m.
When did momondo last update prices for flights from Ontario Airport to Kona Intl Airport?
Prices for flights from Ontario Airport to Kona Intl Airport were last updated today.
How many operators does momondo search for flights from Ontario Airport to Kona Intl Airport?
As of December 2025, there are 6 operators available to choose from for flights from Ontario Airport to Kona Intl Airport.
How old do you have to be to fly from Ontario Airport to Kona Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Kona Intl Airport.
What documentation or ID do you need to fly to Kona Intl Airport?
The necessary travel and health documents for your Kona Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Ontario to Kailua-Kona?
momondo data reveals that the most frequently booked airline on the route from Ontario to Kailua-Kona is Alaska Airlines, representing 37% of all bookings. The subsequent popular airlines are Southwest at 34%, Delta at 14%, and United Airlines at 7%.

Best airlines flying from Ontario to Kailua-Kona

Compare and see reviews for airlines that fly from Ontario to Kailua-Kona with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $220	Free Cancellation	Rating 7.9 8,015 reviews	Search Delta flights
United Airlines	PriceFrom $277	Free Cancellation	Rating 7.4 9,107 reviews	Search United Airlines flights
Southwest	PriceFrom $277	Free Cancellation	Rating 8.0 4,256 reviews	Search Southwest flights
Hawaiian Airlines	PriceFrom $283	Free Cancellation	Rating 7.8 2,820 reviews	Search Hawaiian Airlines flights
American Airlines	PriceFrom $308	Free Cancellation	Rating 7.2 11,051 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $332	Free Cancellation	Rating 8.0 11,518 reviews	Search Alaska Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Kailua-Kona?

Finding the right flight to Kailua-Kona from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Kailua-Kona quick and easy, saving you time and money.

Can I find flights from Ontario to Kailua-Kona with flexible booking policies on momondo?

All flight searches from Ontario to Kailua-Kona on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ontario to Kailua-Kona?

Once you have performed a search for Ontario to Kailua-Kona 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 Kailua-Kona right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Kailua-Kona, momondo offers a useful price alert feature which will track prices for flights to Kailua-Kona from Ontario and alert you when they change.