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Kaua'i

$217+ 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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LIH
Apr 25 — May 21
Sat 4/25
Sat 5/2
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 March 26, 2026.

This Southwest deal was found by Cheapflights users on 3/23. 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 4/176:00 am
ONT
-
LIH
1 stop13h 10m
Southwest
Thu 4/239:10 pm
LIH
-
ONT
1 stop12h 00m
Southwest
Deal found 3/23$370
This Southwest deal was found by Cheapflights users on 3/24. 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.
Wed 4/155:55 am
ONT
-
LIH
1 stop13h 15m
Southwest
Wed 4/229:10 pm
LIH
-
ONT
1 stop12h 00m
Southwest
Deal found 3/24$376
This Southwest deal was found by Cheapflights users on 3/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/155:55 am
ONT
-
LIH
1 stop13h 15m
Southwest
Tue 4/219:10 pm
LIH
-
ONT
1 stop11h 55m
Southwest
Deal found 3/22$396
This Southwest deal was found by Cheapflights users on 3/23. 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 4/165:30 am
ONT
-
LIH
1 stop10h 40m
Southwest
Sun 4/199:10 pm
LIH
-
ONT
1 stop12h 00m
Southwest
Deal found 3/23$429
This American Airlines deal was found by Cheapflights users on 3/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/136:15 am
ONT
-
LIH
1 stop12h 00m
American Airlines
Tue 4/219:30 pm
LIH
-
ONT
1 stop11h 04m
American Airlines
Deal found 3/23$432
This Delta deal was found by Cheapflights users on 3/26. 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.
Mon 8/1711:55 am
ONT
-
LIH
1 stop10h 25m
Delta
Tue 8/259:45 pm
LIH
-
ONT
1 stop10h 29m
Delta
Deal found 3/26$434
This Delta deal was found by Cheapflights users on 3/26. 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.
Mon 8/1711:55 am
ONT
-
LIH
1 stop10h 25m
Delta
Thu 8/209:45 pm
LIH
-
ONT
2 stops15h 29m
Delta
Deal found 3/26$440

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 March 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$370
(Southwest)

One-way from

$217
(Delta)

Popular in

June

Cheapest in

February

Average price

$459
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. 15% potential increase in price ($85 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 March 2026
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 March 26, 2026.
Use the filters below to find and compare flights from Ontario to Kaua'i that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Fri 4/17

6:00 am-4:10 pm

1 stop13h 10m

Lihue

Thu 4/23

9:10 pm-12:10 pm

1 stop12h 00m

$370

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 8/26

5:45 am-12:35 pm

1 stop9h 50m

Lihue

Sun 8/30

8:20 am-8:10 pm

1 stop8h 50m

$505

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 6/23

8:00 am-6:05 pm

1 stop13h 05m

Lihue

Tue 6/30

9:10 pm-7:30 am

1 stop7h 20m

$527

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 5/28

11:52 am-7:06 pm

1 stop10h 14m

Lihue

Wed 6/10

9:55 pm-11:17 am

1 stop10h 22m

$541

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 7/15

2:09 pm-9:25 pm

1 stop10h 16m

Lihue

Tue 7/28

10:25 pm-1:13 pm

1 stop11h 48m

$544

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 7/22

2:09 pm-9:25 pm

1 stop10h 16m

Lihue

Wed 7/29

10:25 pm-11:14 am

1 stop9h 49m

$544

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 7/13

2:09 pm-9:25 pm

1 stop10h 16m

Lihue

Mon 7/20

10:25 pm-1:13 pm

1 stop11h 48m

$551
Quickest round-trip

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 4/20

6:00 am-11:23 am

1 stop8h 23m

Lihue

Thu 4/23

11:00 pm-9:56 am

1 stop7h 56m

$557

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Fri 7/17

11:59 am-7:03 pm

1 stop10h 04m

Lihue

Mon 7/20

9:55 pm-4:35 pm

2 stops15h 40m

$557

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 5/28

1:50 pm-7:42 pm

1 stop8h 52m

Lihue

Wed 6/3

10:44 pm-12:12 pm

1 stop10h 28m

$564

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/21

Showing 1-10 of 24 resultsSorted by cheapest first
1
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, September is the cheapest month in which you can book a flight from Ontario to Kaua'i (average of $181). Flying from Ontario to Kaua'i in June is currently the most expensive (average of $279). 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 March 26, 2026.
Get a feel of what it's like to fly with Southwest,Alaska Airlines, andDelta 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.
Southwest
8.0
Very good
4,331 reviews

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..
Southwest
8.0
Very good
4,331 reviews
Southwest
8.0
Very good
4,331 reviews

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..
Alaska Airlines
7.9
Good
12,119 reviews
Southwest
8.0
Very good
4,331 reviews

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..
Delta
7.9
Good
8,336 reviews
Southwest
8.0
Very good
4,331 reviews

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..
United Airlines
7.4
Good
9,488 reviews
Southwest
8.0
Very good
4,331 reviews

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for 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?

    Southwest, Delta, and Alaska Airlines can get you from Ontario to Kaua'i in just under 10h 14m. Your travel time can differ by up to 2h 56m. There are 2657 mi between Ontario and Kaua'i. Both multi-stop and nonstop flights can be found to your destination and back.

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

    $175 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on United Airlines and Alaska Airlines, with prices starting from $186 and $213, 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, September is the cheapest month in which you can book a flight from Ontario to Kaua'i (average of $181). Flying from Ontario to Kaua'i in June is currently the most expensive (average of $279). 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 March 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$216Average$352FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$258Average$527FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$361Average$610FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$377Average$577FlexibilityNo cancel feeOn-time75%

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