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Kaua'i

$190+ 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LIH
Jun 28 — Jul 51
Sun 6/28
Sun 7/5
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 May 29, 2026.

This Trip.com deal was found by Cheapflights users on 5/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/259:31 am
ONT
-
LIH
1 stop12h 18m
Multiple Airlines
Tue 9/19:35 pm
LIH
-
ONT
1 stop10h 29m
Multiple Airlines
Deal found 5/26$375
This Alaska Airlines deal was found by Cheapflights users on 5/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/229:31 am
ONT
-
LIH
1 stop25h 09m
Multiple Airlines
Wed 9/239:35 pm
LIH
-
ONT
1 stop10h 41m
Multiple Airlines
Deal found 5/27$384
This Delta deal was found by Cheapflights users on 5/26. 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.
Sun 9/137:00 am
ONT
-
LIH
1 stop15h 20m
Delta
Tue 9/299:50 pm
LIH
-
ONT
1 stop10h 14m
Delta
Deal found 5/26$388
This Alaska Airlines deal was found by Cheapflights users on 5/25. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/109:11 am
ONT
-
LIH
1 stop7h 47m
Multiple Airlines
Tue 8/1810:28 pm
LIH
-
ONT
1 stop9h 36m
Multiple Airlines
Deal found 5/25$407
This Delta deal was found by Cheapflights users on 5/28. 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.
Sun 8/3011:45 am
ONT
-
LIH
1 stop10h 22m
Delta
Fri 9/119:45 pm
LIH
-
ONT
1 stop10h 29m
Delta
Deal found 5/28$408
This Kiwi.com deal was found by Cheapflights users on 5/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:20 am
ONT
-
LIH
1 stop10h 20m
Multiple Airlines
Fri 11/2011:31 pm
LIH
-
ONT
1 stop9h 38m
Multiple Airlines
Deal found 5/26$409
This Trip.com deal was found by Cheapflights users on 5/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:00 am
ONT
-
LIH
1 stop8h 10m
Multiple Airlines
Thu 10/2910:31 pm
LIH
-
ONT
1 stop9h 38m
Multiple Airlines
Deal found 5/28$421
This Vliegwinkel deal was found by Cheapflights users on 5/25. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:31 am
ONT
-
LIH
1 stop9h 11m
Multiple Airlines
Tue 10/611:15 am
LIH
-
ONT
1 stop7h 07m
Multiple Airlines
Deal found 5/25$422
This Alaska Airlines deal was found by Cheapflights users on 5/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/139:11 am
ONT
-
LIH
1 stop7h 47m
Multiple Airlines
Thu 7/2311:14 am
LIH
-
ONT
1 stop7h 31m
Multiple Airlines
Deal found 5/27$425
This Alaska Airlines deal was found by Cheapflights users on 5/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:20 am
ONT
-
LIH
1 stop8h 32m
Multiple Airlines
Mon 11/97:21 pm
LIH
-
ONT
1 stop24h 11m
Multiple Airlines
Deal found 5/29$426

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 May 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$375
(Trip.com)

One-way from

$190
(Alaska Airlines)

Popular in

June

Cheapest in

February

Average price

$450
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. 12% potential increase in price ($71 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 29, 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

Tue 8/11

2:05 pm-9:25 pm

1 stop10h 20m

Lihue

Tue 8/25

9:35 pm-11:04 am

1 stop10h 29m

$388

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Sun 8/30

11:45 am-7:07 pm

1 stop10h 22m

Lihue

Tue 9/8

9:45 pm-11:14 am

1 stop10h 29m

$408

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 7/15

1:50 pm-7:42 pm

1 stop8h 52m

Lihue

Mon 7/20

10:00 pm-3:29 pm

2 stops14h 29m

$485

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 11/10

7:20 am-4:32 pm

2 stops11h 12m

Lihue

Fri 11/20

11:31 pm-11:09 am

1 stop9h 38m

$495

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 7/15

6:00 am-6:58 pm

2 stops15h 58m

Lihue

Tue 7/21

8:31 pm-12:10 pm

2 stops12h 39m

$500

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Sat 6/27

9:11 am-5:02 pm

1 stop10h 51m

Lihue

Wed 7/1

10:28 pm-11:14 am

1 stop9h 46m

$505

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Fri 8/14

5:40 am-2:10 pm

2 stops11h 30m

Lihue

Wed 8/19

9:25 pm-11:50 am

1 stop11h 25m

$517

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 8/27

11:45 am-7:07 pm

1 stop10h 22m

Lihue

Thu 9/3

9:38 pm-11:04 am

1 stop10h 26m

$524

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 9/3

9:31 am-5:58 pm

1 stop11h 27m

Lihue

Tue 9/8

9:35 pm-11:16 am

1 stop10h 41m

$556

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 8/13

1:56 pm-7:44 pm

1 stop8h 48m

Lihue

Thu 8/20

10:48 pm-12:12 pm

1 stop10h 24m

$566

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/25

Showing 1-10 of 23 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, November is the cheapest month in which you can book a flight from Ontario to Kaua'i (average of $236). Flying from Ontario to Kaua'i in July is currently the most expensive (average of $505). 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 May 29, 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
4,264 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

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
4,264 reviews
Southwest
8.0
Very good
4,264 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

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
12,429 reviews
Southwest
8.0
Very good
4,264 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

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
8,419 reviews
Southwest
8.0
Very good
4,264 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

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?

    Delta can get you from Ontario to Kaua'i in just under 10h 25m. Your travel time can differ by up to . There are 2657 mi between Ontario and Kaua'i.

  • 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, November is the cheapest month in which you can book a flight from Ontario to Kaua'i (average of $236). Flying from Ontario to Kaua'i in July is currently the most expensive (average of $505). 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 3 airlines flying from Ontario to Kaua'i

Discover the top 3 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 May 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$236Average$541FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$341Average$561FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$441Average$588FlexibilityNo cancel feeOn-time63%

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