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Kaua'i

$159+ 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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LIH
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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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 December 23, 2025.

This Southwest deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/286:20 amONT - LIH
1 stop12h 05mSouthwest
Wed 12/319:10 pmLIH - ONT
1 stop10h 25mSouthwest
Deal found 12/21$603
This Southwest deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:15 amONT - LIH
1 stop7h 55mSouthwest
Tue 12/309:10 pmLIH - ONT
2 stops11h 25mSouthwest
Deal found 12/21$608
This Delta deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:38 amONT - LIH
1 stop13h 22mDelta
Wed 1/710:45 pmLIH - ONT
1 stop13h 11mDelta
Deal found 12/22$688
This United Airlines deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/296:00 amONT - LIH
1 stop9h 14mUnited Airlines
Thu 1/111:59 pmLIH - ONT
1 stop8h 02mUnited Airlines
Deal found 12/20$700
This United Airlines deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:00 amONT - LIH
1 stop9h 14mUnited Airlines
Wed 12/3111:59 pmLIH - ONT
1 stop8h 02mUnited Airlines
Deal found 12/22$713
This United Airlines deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:00 amONT - LIH
1 stop9h 14mUnited Airlines
Wed 12/3111:59 pmLIH - ONT
1 stop8h 02mUnited Airlines
Deal found 12/22$718
This United Airlines deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/276:39 pmONT - LIH
1 stop30h 05mUnited Airlines
Sat 1/1011:50 pmLIH - ONT
1 stop9h 28mUnited Airlines
Deal found 12/20$731
This Southwest deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/285:10 amONT - LIH
2 stops13h 15mSouthwest
Tue 12/309:10 pmLIH - ONT
2 stops11h 25mSouthwest
Deal found 12/21$739
This Delta deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:00 amONT - LIH
2 stops15h 54mDelta
Tue 12/306:00 amLIH - ONT
2 stops14h 49mDelta
Deal found 12/21$744
This United Airlines deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/276:39 pmONT - LIH
1 stop30h 05mUnited Airlines
Wed 12/3111:59 pmLIH - ONT
1 stop8h 02mUnited Airlines
Deal found 12/21$777
This Southwest deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/266:20 amONT - LIH
1 stop12h 05mSouthwest
Tue 12/3010:00 amLIH - ONT
1 stop9h 20mSouthwest
Deal found 12/21$783

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 December 23, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$331
(Alaska Airlines)

One-way from

$159
(Delta)

Popular in

June

Cheapest in

January

Average price

$531
Provider with most accurate pricing for Los Angeles-Lihue flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Lihue flights.
Search Deals
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 ($77 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 December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Kaua'i 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, Cheapflights users made 2,558,603 searches. Data last updated December 23, 2025.
Use the filters below to find and compare flights from Ontario to Kaua'i that are best for you.

Fly from

Ontario

Fly to

Kaua'i

Route

Depart

Return

Price

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 3/3

12:02 pm-10:18 pm

1 stop12h 16m

Lihue

Wed 3/4

10:17 am-10:15 pm

1 stop9h 58m

$365

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 1/20

6:00 am-7:55 pm

2 stops15h 55m

Lihue

Tue 1/27

10:45 pm-1:56 pm

1 stop13h 11m

$380

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Sun 2/1

8:13 am-1:56 pm

1 stop7h 43m

Lihue

Sun 2/8

1:00 pm-10:28 pm

1 stop7h 28m

$386

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 2/5

8:13 am-1:56 pm

1 stop7h 43m

Lihue

Thu 2/12

10:27 am-10:15 pm

1 stop9h 48m

$388

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 2/11

8:13 am-4:54 pm

1 stop10h 41m

Lihue

Thu 2/19

12:49 pm-10:15 pm

1 stop7h 26m

$388

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 3/5

12:02 pm-10:18 pm

1 stop12h 16m

Lihue

Thu 3/12

10:17 am-8:55 pm

1 stop7h 38m

$393

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 3/12

6:14 am-10:22 pm

2 stops19h 08m

Lihue

Tue 3/17

10:19 pm-11:59 pm

1 stop22h 40m

$418

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 2/12

8:41 am-2:30 pm

1 stop7h 49m

Lihue

Tue 2/17

6:48 am-10:15 pm

1 stop13h 27m

$438

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Sun 2/22

8:41 am-3:21 pm

1 stop8h 40m

Lihue

Thu 2/26

6:48 am-10:15 pm

1 stop13h 27m

$443

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Sun 3/8

6:00 am-5:40 pm

1 stop14h 40m

$159

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 21 results
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2
3

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 insights into the airlines that provide service to Kaua'i. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kaua'i. Reviews last updated December 23, 2025.
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
11,507 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.0

Overall

8.0

Comfort

7.8

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
11,507 reviews
Alaska Airlines
8.0
Very good
11,507 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.0

Overall

8.0

Comfort

7.8

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.
Southwest
8.0
Very good
4,253 reviews
Alaska Airlines
8.0
Very good
11,507 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.0

Overall

8.0

Comfort

7.8

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.
Delta
7.9
Good
8,014 reviews
Alaska Airlines
8.0
Very good
11,507 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.0

Overall

8.0

Comfort

7.8

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.
United Airlines
7.4
Good
9,104 reviews
Alaska Airlines
8.0
Very good
11,507 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.0

Overall

8.0

Comfort

7.8

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.

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?

    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?

    Delta can get you from Ontario to Kaua'i in just under 15h 55m. 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

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Top 4 airlines flying from Ontario to Kaua'i

Discover the top 4 airlines that operate flights from Ontario to Kaua'i. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$230Average$345FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$393Average$640FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$404Average$607FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$406Average$644FlexibilityNo cancel feeOn-time75%

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