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.

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 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.

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.

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

What airlines fly to Kailua-Kona?

United Airlines, Hawaiian Airlines and American 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 38% 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.

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 February 2026, there are 5 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.

$150 Cheap Flights from Ontario to Kailua-Kona in 2026

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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.

8:41 am - 10:15 pm

ONT

KOA

15h 34m

1 stop

6:00 am - 10:15 pm

KOA

ONT

14h 15m

1 stop

$318Multiple Airlines

Tue, Mar 3 - Wed, Mar 4

8:45 am - 2:47 pm

ONT

KOA

9h 02m

1 stop

9:17 pm - 11:08 am

KOA

ONT

10h 51m

1 stop

$319Multiple Airlines

Wed, Mar 11 - Mon, Mar 16

8:30 am - 8:26 pm

ONT

KOA

14h 56m

1 stop

8:00 am - 11:58 pm

KOA

ONT

12h 58m

1 stop

$328Multiple Airlines

Wed, May 6 - Wed, May 13

11:53 am - 7:03 pm

ONT

KOA

10h 10m

1 stop

8:50 pm - 11:13 am

KOA

ONT

11h 23m

1 stop

$332Delta

Tue, Apr 21 - Wed, Apr 29

11:53 am - 7:03 pm

ONT

KOA

10h 10m

1 stop

8:50 pm - 1:39 pm

KOA

ONT

13h 49m

1 stop

$334Delta

Thu, Apr 16 - Tue, Apr 21

8:30 am - 7:16 am

ONT

KOA

25h 46m

1 stop

10:36 am - 11:48 pm

KOA

ONT

10h 12m

1 stop

$335Multiple Airlines

Tue, Apr 28 - Fri, May 8

6:00 am - 5:43 pm

ONT

KOA

14h 43m

2 stops

8:50 pm - 1:39 pm

KOA

ONT

13h 49m

1 stop

$338Delta

Tue, Apr 21 - Wed, Apr 29

8:45 am - 5:47 pm

ONT

KOA

12h 02m

1 stop

8:13 pm - 9:39 am

KOA

ONT

10h 26m

1 stop

$342Multiple Airlines

Tue, Mar 10 - Tue, Mar 17

6:00 am - 5:43 pm

ONT

KOA

14h 43m

2 stops

10:00 pm - 4:25 pm

KOA

ONT

15h 25m

2 stops

$343Delta

Tue, Apr 21 - Tue, Apr 28

6:00 am - 7:03 pm

ONT

KOA

16h 03m

2 stops

8:50 pm - 1:39 pm

KOA

ONT

13h 49m

1 stop

$348Delta

Mon, Apr 13 - Tue, Apr 21

Alaska Airlines flights from Ontario to Kailua-Kona

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

Alaska Airlines

Jun 2

ONT11:00 amOntario

26h 46m

1 stop

KOA10:46 amKona Intl

Jun 9

KOA11:56 amKona Intl

9h 00m

1 stop

ONT11:56 pmOntario

$369

Alaska Airlines

Feb 25

ONT12:02 pmOntario

12h 55m

1 stop

KOA10:57 pmKona Intl

Mar 11

KOA9:17 pmKona Intl

10h 51m

1 stop

ONT11:08 amOntario

$394

Alaska Airlines

May 5

ONT10:39 amOntario

12h 13m

1 stop

KOA7:52 pmKona Intl

May 17

KOA9:25 pmKona Intl

10h 42m

1 stop

ONT11:07 amOntario

$399

Southwest flights from Ontario to Kailua-Kona

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

Southwest

Apr 21

ONT11:05 amOntario

10h 00m

2 stops

KOA6:05 pmKona Intl

Apr 28

KOA10:00 amKona Intl

7h 50m

1 stop

ONT8:50 pmOntario

$371

Southwest

Feb 20

ONT6:20 amOntario

8h 55m

1 stop

KOA1:15 pmKona Intl

Feb 26

KOA9:25 pmKona Intl

10h 00m

1 stop

ONT9:25 amOntario

$461

Southwest

Feb 20

ONT5:30 amOntario

10h 15m

1 stop

KOA1:45 pmKona Intl

Feb 26

KOA6:00 amKona Intl

11h 15m

2 stops

ONT7:15 pmOntario

$467

Fly from

Fly to

Route

Depart

Return

Price

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 3/3

8:41 am-10:15 pm

1 stop15h 34m

Kona Intl

Wed 3/4

6:00 am-10:15 pm

1 stop14h 15m

$318

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Wed 3/11

8:45 am-2:47 pm

1 stop9h 02m

Kona Intl

Mon 3/16

9:17 pm-11:08 am

1 stop10h 51m

$319

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Wed 5/6

8:30 am-8:26 pm

1 stop14h 56m

Kona Intl

Wed 5/13

8:00 am-11:58 pm

1 stop12h 58m

$328

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 4/21

11:53 am-7:03 pm

1 stop10h 10m

Kona Intl

Wed 4/29

8:50 pm-11:13 am

1 stop11h 23m

$332

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Thu 4/16

11:53 am-7:03 pm

1 stop10h 10m

Kona Intl

Tue 4/21

8:50 pm-1:39 pm

1 stop13h 49m

$334

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 4/28

8:30 am-7:16 am

1 stop25h 46m

Kona Intl

Fri 5/8

10:36 am-11:48 pm

1 stop10h 12m

$335

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 4/21

6:00 am-5:43 pm

2 stops14h 43m

Kona Intl

Wed 4/29

8:50 pm-1:39 pm

1 stop13h 49m

$338

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 3/10

8:45 am-5:47 pm

1 stop12h 02m

Kona Intl

Tue 3/17

8:13 pm-9:39 am

1 stop10h 26m

$342

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 4/21

6:00 am-5:43 pm

2 stops14h 43m

Kona Intl

Tue 4/28

10:00 pm-4:25 pm

2 stops15h 25m

$343

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 4/13

6:00 am-7:03 pm

2 stops16h 03m

Kona Intl

Tue 4/21

8:50 pm-1:39 pm

1 stop13h 49m

$348

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 January. Flight prices, which tend to average around $370, are often lower during this time because this is during the off-season. The month of December is another great option to travel to Kailua-Kona, with average flight prices from Ontario averaging around $390.

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 $398. 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 $531.

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 $348 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 $460.

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 $503 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 $383 on momondo.

How have Ontario to Kailua-Kona flight prices changed over time?

As of February 2026, prices for Ontario to Kailua-Kona flights are approximately 146% more expensive when compared to flights at the same time last year.

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	7h 40m
Direct flights	None

The fastest flight from Ontario to Kailua-Kona takes 7h 40m

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 7h 40m.
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 February 2026, there are 5 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 35%, Delta at 16%, and United Airlines at 8%.

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 $154	Free Cancellation	Rating 7.9 8,203 reviews	Search Delta flights
United Airlines	PriceFrom $277	Free Cancellation	Rating 7.4 9,289 reviews	Search United Airlines flights
American Airlines	PriceFrom $308	Free Cancellation	Rating 7.2 11,288 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $332	Free Cancellation	Rating 8.0 11,882 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $381	Free Cancellation	Rating 8.0 4,284 reviews	Search Southwest 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.