How long is the flight from Ontario to Kaua'i?

Alaska Airlines can get you from Ontario to Kaua'i in just under 12h 48m. Your travel time can differ by up to . There are 2657 mi between Ontario and Kaua'i.

What are the cheapest airlines to fly from Ontario to Kaua'i one-way?

$138 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on United Airlines and Southwest, with prices starting from $143 and $175, respectively.

In terms of precipitation, rainfall in Kaua'i ranges from 2.2 - 6.7 inches per month. January is typically the wettest month, when rainfall can reach 6.7 in. June is typically the driest time to visit Kaua'i when rainfall is around 2.2 in.

If weather is an important factor for your trip to Kaua'i, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 69.8 F).

What are the most popular airlines that fly from Ontario to Kaua'i?

Before booking your flight from Ontario to Kaua'i check out the most popular airlines for this route: Alaska Airlines, Southwest or United Airlines.

What is the cheapest time of day to fly from ONT to FUS?

When flying from Ontario to Kaua'i, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly from for flights from Ontario to Kaua'i?

Ontario (ONT) is the airport you will fly out of if you book a flight from Ontario to Kaua'i. It is only a 3.1 mi journey to Ontario (ONT) from Ontario’s city center.

Can I find deals for flights from Ontario to Kaua'i that include hotel bookings?

Yes. In addition to deals on Ontario to Kaua'i flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ontario to Kaua'i?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Kaua'i.

Can I find deals for business class flights from Ontario to Kaua'i?

Yes. Cheapflights offers flight deals from Ontario to Kaua'i by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$163+ Flights from Ontario to Kaua'i

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Cheap flight deals from Ontario to Kaua'i

Cheapest flights from Ontario to Kaua'i
Explore the most affordable flight options available from Ontario to Kaua'i. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 1, 2026.

Wed 12/316:00 amONT - LIH

1 stop10h 25mAlaska Airlines

Wed 1/710:20 pmLIH - ONT

1 stop10h 39mAlaska Airlines

Deal found 12/30

$717

Tue 12/306:00 amONT - LIH

1 stop10h 25mAlaska Airlines

Tue 1/611:59 amLIH - ONT

1 stop10h 00mAlaska Airlines

Deal found 12/29

$723

Tue 12/306:00 amONT - LIH

1 stop9h 14mUnited Airlines

Thu 1/111:59 pmLIH - ONT

1 stop8h 02mUnited Airlines

Deal found 12/30

$851

Wed 12/316:00 amONT - LIH

1 stop10h 48mUnited Airlines

Wed 1/76:00 amLIH - ONT

2 stops9h 43mUnited Airlines

Deal found 12/30

$986

Wed 12/316:00 amONT - LIH

1 stop9h 14mUnited Airlines

Sun 1/411:59 pmLIH - ONT

1 stop15h 44mUnited Airlines

Deal found 12/30

$1,127

Wed 12/316:00 amONT - LIH

1 stop10h 48mUnited Airlines

Sat 1/311:12 amLIH - ONT

2 stops20h 49mUnited Airlines

Deal found 12/30

$1,454

Wed 12/316:00 amONT - LIH

1 stop10h 25mMultiple Airlines

Sat 1/312:53 pmLIH - ONT

1 stop7h 15mMultiple Airlines

Deal found 12/30

$1,467

Best flights from Ontario to Kaua'i
Discover carefully curated flight deals from Ontario to Kaua'i that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated January 1, 2026.

Wed 2/188:41 amONT - LIH

1 stop8h 40mMultiple Airlines

Thu 2/268:40 amLIH - ONT

1 stop11h 35mMultiple Airlines

Deal found 12/31

$365

Tue 1/2711:53 amONT - LIH

1 stop12h 48mAlaska Airlines

Wed 1/2810:20 pmLIH - ONT

1 stop10h 39mAlaska Airlines

Deal found 12/30

$393

Wed 2/187:30 amONT - LIH

1 stop13h 16mDelta

Thu 2/2610:40 pmLIH - ONT

2 stops15h 22mDelta

Deal found 12/31

$402

Mon 3/28:41 amONT - LIH

1 stop7h 49mMultiple Airlines

Mon 3/910:19 pmLIH - ONT

1 stop9h 49mMultiple Airlines

Deal found 12/29

$370

Mon 3/97:00 amONT - LIH

2 stops17h 18mAlaska Airlines

Tue 3/1710:19 pmLIH - ONT

1 stop22h 40mAlaska Airlines

Deal found 12/30

$396

Fri 3/68:41 amONT - LIH

1 stop8h 40mMultiple Airlines

Mon 3/910:19 pmLIH - ONT

1 stop9h 49mMultiple Airlines

Deal found 12/31

$381

Wed 1/147:30 amONT - LIH

1 stop14h 25mDelta

Wed 1/2110:45 pmLIH - ONT

1 stop22h 06mDelta

Deal found 12/31

$420

Sun 2/18:13 amONT - LIH

1 stop7h 43mMultiple Airlines

Sun 2/810:22 amLIH - ONT

1 stop10h 06mMultiple Airlines

Deal found 12/30

$406

Tue 1/2711:53 amONT - LIH

1 stop12h 48mMultiple Airlines

Wed 1/2810:22 amLIH - ONT

1 stop10h 06mMultiple Airlines

Deal found 12/29

$414

Sun 2/228:41 amONT - LIH

1 stop8h 40mMultiple Airlines

Thu 2/2610:27 amLIH - ONT

1 stop9h 48mMultiple Airlines

Deal found 12/30

$414

Fri 3/138:45 amONT - LIH

1 stop8h 45mMultiple Airlines

Wed 3/1811:46 amLIH - ONT

1 stop8h 13mMultiple Airlines

Deal found 12/29

$414

Last-minute flights from Ontario to Kaua'i
Discover last-minute flight deals from Ontario to Kaua'i. Data last updated January 1, 2026 and is based on user searches.

Wed 1/147:30 amONT - LIH

1 stop14h 25mDelta

Wed 1/2110:45 pmLIH - ONT

1 stop22h 06mDelta

Deal found 12/31

$420

Thu 1/156:00 amONT - LIH

2 stops14h 21mDelta

Tue 1/2010:45 pmLIH - ONT

1 stop13h 11mDelta

Deal found 12/30

$470

Fri 1/168:13 amONT - LIH

1 stop7h 47mMultiple Airlines

Wed 1/2110:20 pmLIH - ONT

1 stop10h 39mMultiple Airlines

Deal found 12/30

$474

Fri 1/168:13 amONT - LIH

1 stop8h 43mMultiple Airlines

Fri 1/2312:10 pmLIH - ONT

1 stop9h 46mMultiple Airlines

Deal found 12/31

$490

Thu 1/2211:53 amONT - LIH

1 stop12h 48mMultiple Airlines

Wed 1/2812:11 pmLIH - ONT

1 stop8h 17mMultiple Airlines

Deal found 12/31

$409

Tue 1/2711:53 amONT - LIH

1 stop12h 48mAlaska Airlines

Wed 1/2810:20 pmLIH - ONT

1 stop10h 39mAlaska Airlines

Deal found 12/30

$393

Tue 1/2711:53 amONT - LIH

1 stop12h 48mMultiple Airlines

Wed 1/2810:22 amLIH - ONT

1 stop10h 06mMultiple Airlines

Deal found 12/29

$414

Wed 1/2811:53 amONT - LIH

1 stop12h 48mAlaska Airlines

Wed 2/410:20 pmLIH - ONT

1 stop14h 48mAlaska Airlines

Deal found 12/29

$329

Sat 1/318:13 amONT - LIH

1 stop10h 09mMultiple Airlines

Sat 2/710:22 amLIH - ONT

1 stop10h 06mMultiple Airlines

Deal found 12/29

$406

One-way flights from Ontario to Kaua'i
Search for one-way flight options from Ontario to Kaua'i. Find affordable one-way fares based on user searches. Data last updated January 1, 2026.

Mon 2/168:41 amONT - LIH

1 stop8h 40mMultiple Airlines

Deal found 12/31

$163

Tue 2/108:13 amONT - LIH

1 stop10h 41mMultiple Airlines

Deal found 12/30

$173

Wed 3/1112:02 pmONT - LIH

1 stop12h 16mAlaska Airlines

Deal found 12/29

$178

Wed 2/118:13 amONT - LIH

1 stop10h 09mMultiple Airlines

Deal found 12/29

$192

Thu 3/1212:02 pmONT - LIH

1 stop12h 16mAlaska Airlines

Deal found 12/30

$197

Sat 1/318:13 amONT - LIH

1 stop10h 41mMultiple Airlines

Deal found 12/30

$203

Sat 2/74:03 pmONT - LIH

1 stop32h 38mAlaska Airlines

Deal found 12/29

$213

Fri 2/138:41 amONT - LIH

1 stop8h 40mMultiple Airlines

Deal found 12/30

$222

Wed 1/216:00 amONT - LIH

1 stop8h 54mUnited Airlines

Deal found 12/29

$228

Sat 2/284:02 pmONT - LIH

1 stop32h 16mAlaska Airlines

Deal found 12/30

$232

Wed 3/47:00 amONT - LIH

2 stops17h 18mAlaska Airlines

Deal found 12/29

$240

Mon 3/27:00 amONT - LIH

2 stops17h 18mAlaska Airlines

Deal found 12/29

$241

Find flight deals from Ontario to Kaua'i

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$329 (Alaska Airlines)
One-way from	$163 (Kiwi.com)
Popular in	June
Cheapest in	January
Average price	$381

Provider with most accurate pricing for Los Angeles-Lihue flight deals.

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Provider most trusted by Cheapflights users for Los Angeles-Lihue flights.

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From Ontario to Kaua'i

Search Deals

One-way flight from Ontario to Kaua'i

Search Deals

Highest demand for flights based on searches. 14% potential increase in price ($78 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in January 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 2/18

8:41 am-3:21 pm

1 stop8h 40m

Lihue

Thu 2/26

8:40 am-10:15 pm

1 stop11h 35m

$365

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 3/2

8:41 am-2:30 pm

1 stop7h 49m

Lihue

Mon 3/9

10:19 pm-11:08 am

1 stop9h 49m

$370

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Fri 3/6

8:41 am-3:21 pm

1 stop8h 40m

Lihue

Mon 3/9

10:19 pm-11:08 am

1 stop9h 49m

$381

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 1/27

11:53 am-10:41 pm

1 stop12h 48m

Lihue

Wed 1/28

10:20 pm-10:59 am

1 stop10h 39m

$393

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 3/9

7:00 am-9:18 pm

2 stops17h 18m

Lihue

Tue 3/17

10:19 pm-11:59 pm

1 stop22h 40m

$396

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 2/18

7:30 am-6:46 pm

1 stop13h 16m

Lihue

Thu 2/26

10:40 pm-4:02 pm

2 stops15h 22m

$402

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Sun 2/1

8:13 am-1:56 pm

1 stop7h 43m

Lihue

Sun 2/8

10:22 am-10:28 pm

1 stop10h 06m

$406

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 1/27

11:53 am-10:41 pm

1 stop12h 48m

Lihue

Wed 1/28

10:22 am-10:28 pm

1 stop10h 06m

$414

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Sun 2/22

8:41 am-3:21 pm

1 stop8h 40m

Lihue

Thu 2/26

10:27 am-10:15 pm

1 stop9h 48m

$414

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Fri 3/13

8:45 am-2:30 pm

1 stop8h 45m

Lihue

Wed 3/18

11:46 am-10:59 pm

1 stop8h 13m

$414

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/29

Showing 1-10 of 20 results

Best time to book a flight from Ontario to Kaua'i

Have a flexible travel schedule? Discover the best time to fly to Kaua'i from Ontario with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Kaua'i

What is the cheapest month to book a flight from Ontario to Kaua'i?

Currently, January is the cheapest month in which you can book a flight from Ontario to Kaua'i (average of $155). Flying from Ontario to Kaua'i in June is currently the most expensive (average of $269). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Kaua'i

Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Ontario to Kaua'i by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

11,596 reviews

Reviews

1 / 20

2.0

Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

Alaska Airlines

8.0

Very good

11,596 reviews

Alaska Airlines

8.0

Very good

11,596 reviews

Reviews

1 / 20

2.0

Mediocre

Art,Dec 2025

SAN - OGG

Southwest

8.0

Very good

4,253 reviews

Alaska Airlines

8.0

Very good

11,596 reviews

Reviews

1 / 20

2.0

Mediocre

Art,Dec 2025

SAN - OGG

Delta

7.9

Good

8,013 reviews

Alaska Airlines

8.0

Very good

11,596 reviews

Reviews

1 / 20

2.0

Mediocre

Art,Dec 2025

SAN - OGG

United Airlines

7.4

Good

9,128 reviews

Alaska Airlines

8.0

Very good

11,596 reviews

Reviews

1 / 20

2.0

Mediocre

Art,Dec 2025

SAN - OGG

Related info for your journey

What airport do you fly from for flights from Ontario to Kaua'i?
Ontario (ONT) is the airport you will fly out of if you book a flight from Ontario to Kaua'i. It is only a 3.1 mi journey to Ontario (ONT) from Ontario’s city center.
How long is the flight from Ontario to Kaua'i?
Alaska Airlines can get you from Ontario to Kaua'i in just under 12h 48m. Your travel time can differ by up to . There are 2657 mi between Ontario and Kaua'i.
What are the cheapest airlines to fly from Ontario to Kaua'i one-way?
$138 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on United Airlines and Southwest, with prices starting from $143 and $175, respectively.
Can I find deals for flights from Ontario to Kaua'i that include hotel bookings?
Yes. In addition to deals on Ontario to Kaua'i flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Kaua'i?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Kaua'i.
Can I find deals for business class flights from Ontario to Kaua'i?
Yes. Cheapflights offers flight deals from Ontario to Kaua'i by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Ontario to Kaua'i?
Currently, January is the cheapest month in which you can book a flight from Ontario to Kaua'i (average of $155). Flying from Ontario to Kaua'i in June is currently the most expensive (average of $269). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Ontario to Kaua'i

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$230	Average$345	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$393	Average$640	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$404	Average$607	FlexibilityNo cancel fee	On-time63%
Alaska Airlines	Cheapest$406	Average$644	FlexibilityNo cancel fee	On-time75%

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$163+ Cheap flights from Ontario (ONT) to Kaua'i

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/16. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Ontario to Kaua'i

Cheapest flights from Ontario to Kaua'iExplore the most affordable flight options available from Ontario to Kaua'i. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 1, 2026.

Explore the most affordable flight options available from Ontario to Kaua'i. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 1, 2026.

Find flight deals from Ontario to Kaua'i

Keep the following information in mind while searching for Ontario to Kaua'i flight deals. Data was last updated January 1, 2026.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Kaua'i that are best for you.

Best time to book a flight from Ontario to Kaua'i

Have a flexible travel schedule? Discover the best time to fly to Kaua'i from Ontario with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Kaua'i

What is the cheapest month to book a flight from Ontario to Kaua'i?

Reviews of airlines servicing Kaua'i

Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Ontario to Kaua'i by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Kaua'i. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Ontario to Kaua'i?

How long is the flight from Ontario to Kaua'i?

What are the cheapest airlines to fly from Ontario to Kaua'i one-way?

Can I find deals for flights from Ontario to Kaua'i that include hotel bookings?

How can I find direct flights from Ontario to Kaua'i?

Can I find deals for business class flights from Ontario to Kaua'i?

What is the cheapest month to book a flight from Ontario to Kaua'i?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Kaua'i

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Ontario to Kaua'i

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Cheapest flights from Ontario to Kaua'i
Explore the most affordable flight options available from Ontario to Kaua'i. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 1, 2026.