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Cheap flights from Ontario to Kailua-Kona from $155

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 Kailua-Kona departing on 1/11. 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 Kailua-Kona

Cheap round-trip flights

Alaska Airlines Logo
9:50 am - 5:21 pmONT-KOA
9h 31m1 stop
Alaska Airlines Logo
6:00 am - 9:55 pmKOA-ONT
13h 55m1 stop
$310Alaska Airlines
Find Deal
Sun, Jan 11 - Thu, Jan 15
Southwest Logo
8:05 am - 1:05 pmONT-KOA
8h 00m1 stop
Southwest Logo
9:15 am - 9:55 pmKOA-ONT
9h 40m1 stop
$319Southwest
Find Deal
Mon, Sep 22 - Thu, Oct 9
Delta Logo
6:00 am - 5:34 pmONT-KOA
14h 34m1 stop
Delta Logo
9:30 pm - 11:09 amKOA-ONT
10h 39m1 stop
$340Delta
Find Deal
Mon, Sep 1 - Thu, Sep 11
Delta Logo
6:00 am - 5:29 pmONT-KOA
14h 29m1 stop
Delta Logo
9:30 pm - 11:08 amKOA-ONT
10h 38m1 stop
$351Delta
Find Deal
Sun, Sep 21 - Tue, Oct 7
Delta Logo
6:00 am - 5:34 pmONT-KOA
14h 34m1 stop
Delta Logo
9:47 pm - 10:50 amKOA-ONT
10h 03m1 stop
$356Delta
Find Deal
Tue, Sep 9 - Tue, Sep 9
Alaska Airlines Logo
9:45 am - 6:25 pmONT-KOA
10h 40m1 stop
Alaska Airlines Logo
1:03 pm - 11:56 pmKOA-ONT
8h 53m1 stop
$357Alaska Airlines
Find Deal
Wed, Nov 12 - Wed, Nov 19
Delta Logo
6:00 am - 5:34 pmONT-KOA
14h 34m1 stop
Delta Logo
9:47 pm - 10:50 amKOA-ONT
10h 03m1 stop
$360Delta
Find Deal
Mon, Sep 1 - Mon, Sep 8
Delta Logo
6:00 am - 5:34 pmONT-KOA
14h 34m1 stop
Delta Logo
9:47 pm - 10:50 amKOA-ONT
10h 03m1 stop
$361Delta
Find Deal
Thu, Aug 21 - Tue, Aug 26
Southwest Logo
6:00 am - 1:05 pmONT-KOA
10h 05m1 stop
Southwest Logo
9:15 am - 9:35 pmKOA-ONT
9h 20m1 stop
$376Southwest
Find Deal
Mon, Aug 25 - Mon, Sep 1
Southwest Logo
5:40 am - 2:25 pmONT-KOA
11h 45m2 stops
Southwest Logo
9:15 am - 8:15 pmKOA-ONT
8h 00m1 stop
$381Southwest
Find Deal
Mon, Aug 25 - Wed, Sep 3

Alaska Airlines flights from Ontario to Kailua-Kona

Our best Alaska Airlines deals on Ontario to Kailua-Kona flight tickets
Alaska Airlines
Jan 11
ONT9:50 amOntario
9h 31m
1 stop
KOA5:21 pmKona Intl
Jan 15
KOA6:00 amKona Intl
13h 55m
1 stop
ONT9:55 pmOntario
$310
Find similar
Alaska Airlines
Nov 12
ONT9:45 amOntario
10h 40m
1 stop
KOA6:25 pmKona Intl
Nov 19
KOA1:03 pmKona Intl
8h 53m
1 stop
ONT11:56 pmOntario
$357
Find similar
Alaska Airlines
Oct 1
ONT3:06 pmOntario
23h 10m
1 stop
KOA11:16 amKona Intl
Oct 8
KOA11:57 amKona Intl
8h 54m
1 stop
ONT11:51 pmOntario
$364
Find similar

Delta flights from Ontario to Kailua-Kona

Our best Delta deals on Ontario to Kailua-Kona flight tickets
Delta
Sep 1
ONT6:00 amOntario
14h 34m
1 stop
KOA5:34 pmKona Intl
Sep 11
KOA9:30 pmKona Intl
10h 39m
1 stop
ONT11:09 amOntario
$340
Find similar
Delta
Sep 21
ONT6:00 amOntario
14h 29m
1 stop
KOA5:29 pmKona Intl
Oct 7
KOA9:30 pmKona Intl
10h 38m
1 stop
ONT11:08 amOntario
$351
Find similar
Delta
Sep 9
ONT6:00 amOntario
14h 34m
1 stop
KOA5:34 pmKona Intl
Sep 9
KOA9:47 pmKona Intl
10h 03m
1 stop
ONT10:50 amOntario
$356
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Kailua-Kona 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 July 29, 2025.
Use the filters below to find and compare flights from Ontario to Kailua-Kona that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Sun 1/11

9:50 am-5:21 pm

1 stop9h 31m

Kona Intl

Thu 1/15

6:00 am-9:55 pm

1 stop13h 55m

$310

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 9/22

8:05 am-1:05 pm

1 stop8h 00m

Kona Intl

Thu 10/9

9:15 am-9:55 pm

1 stop9h 40m

$319

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 9/1

6:00 am-5:34 pm

1 stop14h 34m

Kona Intl

Thu 9/11

9:30 pm-11:09 am

1 stop10h 39m

$340

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Sun 9/21

6:00 am-5:29 pm

1 stop14h 29m

Kona Intl

Tue 10/7

9:30 pm-11:08 am

1 stop10h 38m

$351

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Tue 9/9

6:00 am-5:34 pm

1 stop14h 34m

Kona Intl

Tue 9/9

9:47 pm-10:50 am

1 stop10h 03m

$356

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Wed 11/12

9:45 am-6:25 pm

1 stop10h 40m

Kona Intl

Wed 11/19

1:03 pm-11:56 pm

1 stop8h 53m

$357

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 9/1

6:00 am-5:34 pm

1 stop14h 34m

Kona Intl

Mon 9/8

9:47 pm-10:50 am

1 stop10h 03m

$360

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Thu 8/21

6:00 am-5:34 pm

1 stop14h 34m

Kona Intl

Tue 8/26

9:47 pm-10:50 am

1 stop10h 03m

$361

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 8/25

6:00 am-1:05 pm

1 stop10h 05m

Kona Intl

Mon 9/1

9:15 am-9:35 pm

1 stop9h 20m

$376

OntarioKailua-Kona

ONT - KOA

ONTKOA

Ontario

Mon 8/25

5:40 am-2:25 pm

2 stops11h 45m

Kona Intl

Wed 9/3

9:15 am-8:15 pm

1 stop8h 00m

$381

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 Kailua-Kona from

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

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 $354, are often lower during this time because this is during the off-season. The month of February is another great option to travel to Kailua-Kona, with average flight prices from Ontario averaging around $375.

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 $382. 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 $499.

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 $310 when looking at flights departing at noon. In contrast, the most expensive time of day to depart to Kailua-Kona is in the evening when prices are around $686.

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 $469 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 $357 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

Best Price Found

$155

Fastest flight time

7h 48m

Direct flights

None

Airports in Kailua-Kona

1 airport
The best one-way flight to Kailua-Kona from Ontario in the past 72 hours is $155. The best round-trip flight deal from Ontario to Kailua-Kona found on momondo in the last 72 hours is $310.
The fastest flight from Ontario to Kailua-Kona takes 7h 48m
There are no direct flights from Ontario to Kailua-Kona. Popular non-direct route for this connection is Ontario Airport - Kona Intl Airport.
There is 1 airport near Kailua-Kona: Kona Intl (KOA)
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 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?

  • 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?

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
DeltaPriceFrom $220Free CancellationRating
8.0
7,977 reviews
Search Delta flights
American AirlinesPriceFrom $247Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Hawaiian AirlinesPriceFrom $251Free CancellationRating
7.8
2,605 reviews
Search Hawaiian Airlines flights
United AirlinesPriceFrom $265Free CancellationRating
7.4
8,899 reviews
Search United Airlines flights
SouthwestPriceFrom $277Free CancellationRating
8.0
4,238 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $348Free CancellationRating
8.0
10,000 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.

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