What is the cheapest airline that flies from Ontario to Kaua'i?

Alaska Airlines is the most popular carrier operating from Ontario to Kaua'i

What airlines fly to Kaua'i?

Hawaiian Airlines, Alaska Airlines and United Airlines are the top three most popular airlines that fly to Kaua'i from Ontario according to our data. Hawaiian Airlines is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Kaua'i. Keep in mind that there are 6 different airlines that fly to Kaua'i 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 Kaua'i?

Prices for flights from Ontario Airport to Kaua'i are updated daily.

How many operators does momondo search for flights from Ontario Airport to Kaua'i?

As of December 2025, there are 5 operators available to choose from for flights from Ontario Airport to Kaua'i.

How old do you have to be to fly from Ontario Airport to Kaua'i?

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 Kaua'i.

What documentation or ID do you need to fly to Kaua'i?

The required travel and health documents for your Kaua'i 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 Kaua'i. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$164 Cheap Flights from Ontario to Kaua'i in 2025/26

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Find the cheapest flights from Ontario to Kaua'i

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 6:15 pmONT-LIH

13h 15m2 stops

9:15 pm - 12:15 pmLIH-ONT

13h 00m1 stop

$294Southwest

Find Deal

Wed, Jan 21 - Tue, Jan 27

7:00 am - 6:15 pmONT-LIH

13h 15m2 stops

9:15 pm - 10:25 amLIH-ONT

11h 10m2 stops

$300Southwest

Find Deal

Wed, Jan 21 - Tue, Jan 27

11:53 am - 10:41 pmONT-LIH

12h 48m1 stop

12:11 pm - 10:28 pmLIH-ONT

8h 17m1 stop

$316Hawaiian Airlines

Find Deal

Thu, Jan 8 - Wed, Jan 14

6:14 am - 10:18 pmONT-LIH

18h 04m1 stop

10:19 pm - 10:44 pmLIH-ONT

21h 25m1 stop

$320Alaska Airlines

Find Deal

Tue, Mar 3 - Tue, Mar 10

6:05 am - 1:15 pmONT-LIH

9h 10m1 stop

10:00 am - 8:00 pmLIH-ONT

8h 00m1 stop

$322Southwest

Find Deal

Wed, Jan 14 - Mon, Jan 19

8:13 am - 2:56 pmONT-LIH

8h 43m1 stop

7:28 am - 10:28 pmLIH-ONT

13h 00m1 stop

$328Alaska Airlines

Find Deal

Wed, Jan 21 - Tue, Jan 27

7:30 am - 7:55 pmONT-LIH

14h 25m1 stop

10:45 pm - 1:56 pmLIH-ONT

13h 11m1 stop

$330Delta

Find Deal

Thu, Jan 8 - Wed, Jan 14

11:53 am - 10:41 pmONT-LIH

12h 48m1 stop

12:11 pm - 10:28 pmLIH-ONT

8h 17m1 stop

$333Alaska Airlines

Find Deal

Wed, Jan 7 - Thu, Jan 15

12:02 pm - 10:18 pmONT-LIH

12h 16m1 stop

10:19 pm - 11:08 amLIH-ONT

9h 49m1 stop

$337Alaska Airlines

Find Deal

Tue, Mar 3 - Mon, Mar 9

6:14 am - 10:18 pmONT-LIH

18h 04m1 stop

10:19 pm - 10:44 pmLIH-ONT

21h 25m1 stop

$339Alaska Airlines

Find Deal

Mon, Mar 2 - Tue, Mar 10

Hawaiian Airlines flights from Ontario to Kaua'i

Our best Hawaiian Airlines deals on Ontario to Kaua'i flight tickets

Hawaiian Airlines

Jan 8

ONT11:53 amOntario

12h 48m

1 stop

LIH10:41 pmLihue

Jan 14

LIH12:11 pmLihue

8h 17m

1 stop

ONT10:28 pmOntario

$316

Find similar

Hawaiian Airlines

Feb 2

ONT8:13 amOntario

10h 41m

1 stop

LIH4:54 pmLihue

Feb 5

LIH1:00 pmLihue

7h 28m

1 stop

ONT10:28 pmOntario

$368

Find similar

Hawaiian Airlines

Dec 17

ONT7:00 amOntario

8h 09m

1 stop

LIH1:09 pmLihue

Dec 21

LIH11:59 amLihue

10h 00m

1 stop

ONT11:59 pmOntario

$570

Find similar

Delta flights from Ontario to Kaua'i

Our best Delta deals on Ontario to Kaua'i flight tickets

Delta

Jan 8

ONT7:30 amOntario

14h 25m

1 stop

LIH7:55 pmLihue

Jan 14

LIH10:45 pmLihue

13h 11m

1 stop

ONT1:56 pmOntario

$330

Find similar

Delta

Mar 9

ONT6:00 amOntario

15h 50m

2 stops

LIH6:50 pmLihue

Mar 17

LIH8:30 pmLihue

11h 49m

1 stop

ONT11:19 amOntario

$342

Find similar

Delta

Mar 9

ONT6:00 amOntario

15h 50m

2 stops

LIH6:50 pmLihue

Mar 17

LIH8:30 pmLihue

11h 49m

1 stop

ONT11:19 amOntario

$382

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 1/21

7:00 am-6:15 pm

2 stops13h 15m

Lihue

Tue 1/27

9:15 pm-12:15 pm

1 stop13h 00m

$294

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 1/21

7:00 am-6:15 pm

2 stops13h 15m

Lihue

Tue 1/27

9:15 pm-10:25 am

2 stops11h 10m

$300

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 1/8

11:53 am-10:41 pm

1 stop12h 48m

Lihue

Wed 1/14

12:11 pm-10:28 pm

1 stop8h 17m

$316

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 3/3

6:14 am-10:18 pm

1 stop18h 04m

Lihue

Tue 3/10

10:19 pm-10:44 pm

1 stop21h 25m

$320

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 1/14

6:05 am-1:15 pm

1 stop9h 10m

Lihue

Mon 1/19

10:00 am-8:00 pm

1 stop8h 00m

$322

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 1/21

8:13 am-2:56 pm

1 stop8h 43m

Lihue

Tue 1/27

7:28 am-10:28 pm

1 stop13h 00m

$328

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 1/8

7:30 am-7:55 pm

1 stop14h 25m

Lihue

Wed 1/14

10:45 pm-1:56 pm

1 stop13h 11m

$330

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 1/7

11:53 am-10:41 pm

1 stop12h 48m

Lihue

Thu 1/15

12:11 pm-10:28 pm

1 stop8h 17m

$333

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 3/3

12:02 pm-10:18 pm

1 stop12h 16m

Lihue

Mon 3/9

10:19 pm-11:08 am

1 stop9h 49m

$337

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 3/2

6:14 am-10:18 pm

1 stop18h 04m

Lihue

Tue 3/10

10:19 pm-10:44 pm

1 stop21h 25m

$339

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 Kaua'i

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

What is the cheapest month to fly to Kaua'i?

In general, September is the cheapest month to fly from Ontario to Kaua'i. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $407. The month of November is another great option to travel to Kaua'i, with average flight prices from Ontario averaging around $450.

What is the cheapest day to depart on your flight to Kaua'i?

According to our data, Thursday is the cheapest day to fly to Kaua'i from Ontario. The lowest ticket price found for a Thursday departure recently was $298. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $610. These prices are subject to change though, so be sure to set up a Price Alert for flights to Kaua'i.

What is the cheapest time of day to depart on your flight to Kaua'i?

The cheapest time of day to fly to Kaua'i is in the morning when flights can be purchased for as low as $496. In contrast, the most expensive time of day to depart to Kaua'i is at noon when prices are around $525.

How far in advance should I book a flight to Kaua'i?

You are more likely to see cheaper flights to Kaua'i from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Kaua'i for around $628 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kaua'i from Ontario for as low as $473 on momondo.

Can stopping save me money on Ontario to Kaua'i flights?

No. A direct flight is the cheapest option for a flight between Ontario to Kaua'i.

Cheap Ontario to Kaua'i flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Kaua'i

Fastest flight time	8h 09m
Direct flights	None

The fastest flight from Ontario to Kaua'i takes 8h 09m

There are no direct flights from Ontario to Kaua'i. There are no popular flight routes from Ontario to Kaua'i.

Search flight deals

When did momondo last update prices for flights from Ontario Airport to Kaua'i?
Prices for flights from Ontario Airport to Kaua'i are updated daily.
How many operators does momondo search for flights from Ontario Airport to Kaua'i?
As of December 2025, there are 5 operators available to choose from for flights from Ontario Airport to Kaua'i.
How old do you have to be to fly from Ontario Airport to Kaua'i?
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 Kaua'i.
What documentation or ID do you need to fly to Kaua'i?
The required travel and health documents for your Kaua'i 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 Kaua'i. 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 Kaua'i?
momondo data reveals that the most frequently booked plane model on the route from Ontario to Kaua'i is Airbus A320neo, representing 14.66% of all bookings. The subsequent popular models are Airbus A320-100/200 at 11.19%, Boeing 737 MAX 8 at 10.28%, and Airbus A321neo at 9.45%.

Best airlines flying from Ontario to Kaua'i

Compare and see reviews for airlines that fly from Ontario to Kaua'i with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $230	Free Cancellation	Rating 7.9 8,009 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom $265	Free Cancellation	Rating 7.8 2,815 reviews	Search Hawaiian Airlines flights
United Airlines	PriceFrom $393	Free Cancellation	Rating 7.4 9,064 reviews	Search United Airlines flights
Southwest	PriceFrom $404	Free Cancellation	Rating 8.0 4,253 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $406	Free Cancellation	Rating 8.0 11,390 reviews	Search Alaska Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Kaua'i?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to Kaua'i. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Ontario to Kaua'i with flexible booking policies on momondo?

Yes. All flights to Kaua'i from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Ontario to Kaua'i?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Kaua'i from Ontario.

I’m not ready to book a flight from Ontario to Kaua'i right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to Kaua'i flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.