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, United Airlines and American 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 30% 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 January 2026, there are 4 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.

$153 Cheap Flights from Ontario to Kaua'i in 2026

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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.

8:41 am - 8:28 pm

ONT

LIH

13h 47m

1 stop

7:28 am - 8:55 pm

LIH

ONT

10h 27m

1 stop

$305Multiple Airlines

Wed, Mar 4 - Wed, Mar 11

6:00 am - 9:26 pm

ONT

LIH

18h 26m

1 stop

7:21 am - 9:10 pm

LIH

ONT

10h 49m

1 stop

$328Multiple Airlines

Wed, Apr 29 - Wed, May 6

8:41 am - 3:21 pm

ONT

LIH

8h 40m

1 stop

11:19 pm - 11:08 am

LIH

ONT

9h 49m

1 stop

$330Multiple Airlines

Wed, Feb 25 - Tue, Mar 3

8:41 am - 4:57 pm

ONT

LIH

10h 16m

1 stop

7:28 am - 10:15 pm

LIH

ONT

12h 47m

1 stop

$344Multiple Airlines

Sun, Feb 22 - Fri, Feb 27

12:02 pm - 10:18 pm

ONT

LIH

12h 16m

1 stop

7:45 pm - 10:15 pm

LIH

ONT

24h 30m

1 stop

$346Multiple Airlines

Tue, Feb 24 - Tue, Mar 3

8:41 am - 7:11 pm

ONT

LIH

12h 30m

1 stop

10:12 am - 8:55 pm

LIH

ONT

7h 43m

1 stop

$347Multiple Airlines

Sat, Mar 7 - Wed, Mar 11

8:41 am - 7:11 pm

ONT

LIH

12h 30m

1 stop

10:12 am - 10:15 pm

LIH

ONT

10h 03m

1 stop

$363Multiple Airlines

Mon, Mar 2 - Thu, Mar 5

12:01 pm - 9:26 pm

ONT

LIH

12h 25m

1 stop

8:19 am - 10:07 pm

LIH

ONT

10h 48m

1 stop

$364Multiple Airlines

Wed, May 13 - Wed, May 20

10:33 am - 9:29 pm

ONT

LIH

13h 56m

1 stop

12:26 pm - 10:59 pm

LIH

ONT

7h 33m

1 stop

$368Multiple Airlines

Wed, Apr 15 - Tue, Apr 21

5:55 am - 2:25 pm

ONT

LIH

10h 30m

2 stops

8:10 pm - 10:25 am

LIH

ONT

11h 15m

1 stop

$379Southwest

Wed, Mar 4 - Wed, Mar 11

Southwest flights from Ontario to Kaua'i

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

Southwest

Mar 4

ONT5:55 amOntario

10h 30m

2 stops

LIH2:25 pmLihue

Mar 11

LIH8:10 pmLihue

11h 15m

1 stop

ONT10:25 amOntario

$379

Southwest

Mar 4

ONT5:55 amOntario

10h 30m

2 stops

LIH2:25 pmLihue

Mar 11

LIH8:10 pmLihue

10h 10m

2 stops

ONT9:20 amOntario

$384

Southwest

Feb 4

ONT6:05 amOntario

9h 10m

1 stop

LIH1:15 pmLihue

Feb 9

LIH9:15 pmLihue

13h 00m

1 stop

ONT12:15 pmOntario

$466

United Airlines flights from Ontario to Kaua'i

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

United Airlines

Feb 21

ONT1:53 pmOntario

10h 51m

1 stop

LIH10:44 pmLihue

Feb 28

LIH11:59 pmLihue

10h 39m

1 stop

ONT12:38 pmOntario

$441

United Airlines

Mar 5

ONT6:15 amOntario

8h 53m

1 stop

LIH1:08 pmLihue

Mar 10

LIH11:13 pmLihue

10h 05m

1 stop

ONT12:18 pmOntario

$444

United Airlines

Mar 5

ONT1:40 pmOntario

11h 17m

1 stop

LIH10:57 pmLihue

Mar 9

LIH11:13 pmLihue

10h 05m

1 stop

ONT12:18 pmOntario

$456

Fly from

Fly to

Route

Depart

Return

Price

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 3/4

8:41 am-8:28 pm

1 stop13h 47m

Lihue

Wed 3/11

7:28 am-8:55 pm

1 stop10h 27m

$305

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 4/29

6:00 am-9:26 pm

1 stop18h 26m

Lihue

Wed 5/6

7:21 am-9:10 pm

1 stop10h 49m

$328

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 2/25

8:41 am-3:21 pm

1 stop8h 40m

Lihue

Tue 3/3

11:19 pm-11:08 am

1 stop9h 49m

$330

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Sun 2/22

8:41 am-4:57 pm

1 stop10h 16m

Lihue

Fri 2/27

7:28 am-10:15 pm

1 stop12h 47m

$344

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 2/24

12:02 pm-10:18 pm

1 stop12h 16m

Lihue

Tue 3/3

7:45 pm-10:15 pm

1 stop24h 30m

$346

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Sat 3/7

8:41 am-7:11 pm

1 stop12h 30m

Lihue

Wed 3/11

10:12 am-8:55 pm

1 stop7h 43m

$347

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 3/2

8:41 am-7:11 pm

1 stop12h 30m

Lihue

Thu 3/5

10:12 am-10:15 pm

1 stop10h 03m

$363

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 5/13

12:01 pm-9:26 pm

1 stop12h 25m

Lihue

Wed 5/20

8:19 am-10:07 pm

1 stop10h 48m

$364

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 4/15

10:33 am-9:29 pm

1 stop13h 56m

Lihue

Tue 4/21

12:26 pm-10:59 pm

1 stop7h 33m

$368

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 3/4

5:55 am-2:25 pm

2 stops10h 30m

Lihue

Wed 3/11

8:10 pm-10:25 am

1 stop11h 15m

$379

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 $411.

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 $620 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 $440 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	7h 47m
Direct flights	None

The fastest flight from Ontario to Kaua'i takes 7h 47m

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 January 2026, there are 4 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 12.21% of all bookings. The subsequent popular models are Airbus A321neo at 11.28%, Airbus A320-100/200 at 11.00%, and Boeing 737 MAX 8 at 9.97%.

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 $216	Free Cancellation	Rating 7.9 8,113 reviews	Search Delta flights
United Airlines	PriceFrom $393	Free Cancellation	Rating 7.4 9,198 reviews	Search United Airlines flights
Southwest	PriceFrom $404	Free Cancellation	Rating 8.0 4,268 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $406	Free Cancellation	Rating 8.0 11,792 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.