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

Alaska Airlines and Delta are the most popular carriers operating from Ontario to Kaua'i

What airlines fly to Kaua'i?

United Airlines, Alaska Airlines and American Airlines are the top three most popular airlines that fly to Kaua'i from Ontario according to our data. United Airlines is the first choice among our users, with 29% of people opting to fly with this airline when traveling to Kaua'i. Keep in mind that there are 7 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 March 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.

$166 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.

8:30 am - 1:24 pm

ONT

LIH

7h 54m

1 stop

12:11 pm - 11:48 pm

LIH

ONT

8h 37m

1 stop

$347Multiple Airlines

Wed, Apr 29 - Wed, May 6

7:00 am - 5:40 pm

ONT

LIH

13h 40m

1 stop

8:20 pm - 1:39 pm

LIH

ONT

14h 19m

1 stop

$352Delta

Wed, Apr 22 - Tue, May 5

7:00 am - 5:40 pm

ONT

LIH

13h 40m

1 stop

8:20 pm - 1:39 pm

LIH

ONT

14h 19m

1 stop

$358Delta

Tue, Apr 21 - Thu, Apr 23

7:00 am - 5:40 pm

ONT

LIH

13h 40m

1 stop

8:20 pm - 1:39 pm

LIH

ONT

14h 19m

1 stop

$370Delta

Thu, Apr 16 - Tue, Apr 28

12:30 pm - 9:25 pm

ONT

LIH

11h 55m

2 stops

9:10 pm - 11:35 am

LIH

ONT

11h 25m

2 stops

$373Southwest

Tue, Apr 14 - Tue, Apr 21

7:00 am - 5:40 pm

ONT

LIH

13h 40m

1 stop

8:20 pm - 11:12 am

LIH

ONT

11h 52m

1 stop

$378Delta

Tue, Apr 21 - Wed, May 6

8:30 am - 3:39 pm

ONT

LIH

10h 09m

1 stop

9:00 pm - 9:10 pm

LIH

ONT

21h 10m

1 stop

$379Multiple Airlines

Tue, Apr 28 - Wed, Apr 29

7:00 am - 5:40 pm

ONT

LIH

13h 40m

1 stop

8:20 pm - 12:19 pm

LIH

ONT

12h 59m

2 stops

$384Delta

Tue, Apr 21 - Wed, May 6

8:30 am - 2:35 pm

ONT

LIH

9h 05m

1 stop

9:00 pm - 9:10 pm

LIH

ONT

21h 10m

1 stop

$385Multiple Airlines

Tue, Apr 28 - Wed, Apr 29

12:04 pm - 9:26 pm

ONT

LIH

12h 22m

1 stop

10:26 pm - 11:12 am

LIH

ONT

9h 46m

1 stop

$389Alaska Airlines

Thu, May 14 - Tue, May 19

United Airlines flights from Ontario to Kaua'i

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

United Airlines

Apr 18

ONT1:27 pmOntario

9h 26m

1 stop

LIH7:53 pmLihue

Apr 25

LIH11:00 pmLihue

10h 20m

1 stop

ONT12:20 pmOntario

$406

United Airlines

Apr 18

ONT1:27 pmOntario

9h 26m

1 stop

LIH7:53 pmLihue

Apr 25

LIH10:00 pmLihue

11h 20m

2 stops

ONT12:20 pmOntario

$442

United Airlines

Apr 15

ONT1:27 pmOntario

24h 56m

1 stop

LIH11:23 amLihue

Apr 24

LIH11:00 pmLihue

8h 08m

1 stop

ONT10:08 amOntario

$447

Delta flights from Ontario to Kaua'i

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

Delta

Apr 22

ONT7:00 amOntario

13h 40m

1 stop

LIH5:40 pmLihue

May 5

LIH8:20 pmLihue

14h 19m

1 stop

ONT1:39 pmOntario

$352

Delta

Apr 21

ONT7:00 amOntario

13h 40m

1 stop

LIH5:40 pmLihue

Apr 23

LIH8:20 pmLihue

14h 19m

1 stop

ONT1:39 pmOntario

$358

Delta

Apr 16

ONT7:00 amOntario

13h 40m

1 stop

LIH5:40 pmLihue

Apr 28

LIH8:20 pmLihue

14h 19m

1 stop

ONT1:39 pmOntario

$370

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 4/29

8:30 am-1:24 pm

1 stop7h 54m

Lihue

Wed 5/6

12:11 pm-11:48 pm

1 stop8h 37m

$347

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 4/22

7:00 am-5:40 pm

1 stop13h 40m

Lihue

Tue 5/5

8:20 pm-1:39 pm

1 stop14h 19m

$352

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 4/21

7:00 am-5:40 pm

1 stop13h 40m

Lihue

Thu 4/23

8:20 pm-1:39 pm

1 stop14h 19m

$358

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 4/16

7:00 am-5:40 pm

1 stop13h 40m

Lihue

Tue 4/28

8:20 pm-1:39 pm

1 stop14h 19m

$370

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 4/14

12:30 pm-9:25 pm

2 stops11h 55m

Lihue

Tue 4/21

9:10 pm-11:35 am

2 stops11h 25m

$373

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 4/21

7:00 am-5:40 pm

1 stop13h 40m

Lihue

Wed 5/6

8:20 pm-11:12 am

1 stop11h 52m

$378

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 4/28

8:30 am-3:39 pm

1 stop10h 09m

Lihue

Wed 4/29

9:00 pm-9:10 pm

1 stop21h 10m

$379

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 4/21

7:00 am-5:40 pm

1 stop13h 40m

Lihue

Wed 5/6

8:20 pm-12:19 pm

2 stops12h 59m

$384

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 4/28

8:30 am-2:35 pm

1 stop9h 05m

Lihue

Wed 4/29

9:00 pm-9:10 pm

1 stop21h 10m

$385

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 5/14

12:04 pm-9:26 pm

1 stop12h 22m

Lihue

Tue 5/19

10:26 pm-11:12 am

1 stop9h 46m

$389

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 $612 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 $389 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 23m
Direct flights	None

The fastest flight from Ontario to Kaua'i takes 8h 23m

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 March 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 A321neo, representing 14.29% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 11.19%, Boeing 737 MAX 8 at 10.96%, and Airbus A320neo at 10.66%.

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 8,292 reviews	Search Delta flights
Southwest	PriceFrom $361	Free Cancellation	Rating 8.0 4,318 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $377	Free Cancellation	Rating 7.9 12,052 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $393	Free Cancellation	Rating 7.4 9,427 reviews	Search United 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.