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Kaua'i

$152+ 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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LIH
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
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 January 29, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/48:41 am
ONT
-
LIH
1 stop13h 47m
Multiple Airlines
Wed 3/116:48 am
LIH
-
ONT
1 stop11h 07m
Multiple Airlines
Deal found 1/28$323
This CheapOair deal was found by Cheapflights users on 1/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/156:00 am
ONT
-
LIH
1 stop18h 29m
Multiple Airlines
Wed 4/227:21 am
LIH
-
ONT
1 stop10h 49m
Multiple Airlines
Deal found 1/28$328
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/298:30 am
ONT
-
LIH
1 stop14h 59m
Multiple Airlines
Wed 5/67:21 am
LIH
-
ONT
1 stop10h 49m
Multiple Airlines
Deal found 1/27$337
This Alaska Airlines deal was found by Cheapflights users on 1/27. 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.
Wed 3/48:41 am
ONT
-
LIH
1 stop13h 47m
Multiple Airlines
Tue 3/107:28 am
LIH
-
ONT
1 stop10h 27m
Multiple Airlines
Deal found 1/27$359
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/38:41 am
ONT
-
LIH
1 stop7h 49m
Multiple Airlines
Mon 3/169:00 pm
LIH
-
ONT
1 stop20h 55m
Multiple Airlines
Deal found 1/27$362
This Alaska Airlines deal was found by Cheapflights users on 1/27. 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 3/26:14 am
ONT
-
LIH
1 stop11h 36m
Multiple Airlines
Thu 3/57:28 am
LIH
-
ONT
1 stop12h 47m
Multiple Airlines
Deal found 1/27$364
This Alaska Airlines deal was found by Cheapflights users on 1/27. 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.
Wed 3/48:41 am
ONT
-
LIH
1 stop12h 30m
Multiple Airlines
Mon 3/97:28 am
LIH
-
ONT
1 stop10h 27m
Multiple Airlines
Deal found 1/27$367
This CheapOair deal was found by Cheapflights users on 1/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/166:00 am
ONT
-
LIH
1 stop18h 29m
Multiple Airlines
Wed 4/226:48 am
LIH
-
ONT
1 stop11h 22m
Multiple Airlines
Deal found 1/28$369
This Alaska Airlines deal was found by Cheapflights users on 1/27. 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.
Wed 3/48:41 am
ONT
-
LIH
1 stop12h 30m
Multiple Airlines
Tue 3/176:00 am
LIH
-
ONT
1 stop11h 55m
Multiple Airlines
Deal found 1/27$370
This Alaska Airlines deal was found by Cheapflights users on 1/27. 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.
Wed 3/48:41 am
ONT
-
LIH
1 stop12h 30m
Multiple Airlines
Mon 3/169:00 pm
LIH
-
ONT
1 stop20h 55m
Multiple Airlines
Deal found 1/27$371
This Alaska Airlines deal was found by Cheapflights users on 1/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/98:45 am
ONT
-
LIH
1 stop14h 43m
Multiple Airlines
Tue 3/1711:27 am
LIH
-
ONT
1 stop9h 25m
Multiple Airlines
Deal found 1/28$372
This CheapOair deal was found by Cheapflights users on 1/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/166:00 am
ONT
-
LIH
1 stop18h 29m
Alaska Airlines
Thu 4/2310:26 pm
LIH
-
ONT
1 stop13h 06m
Alaska Airlines
Deal found 1/28$373

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 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$323
(Alaska Airlines)

One-way from

$152
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$404
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. 13% potential increase in price ($76 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 January 29, 2026.
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

Wed 3/4

8:41 am-8:28 pm

1 stop13h 47m

Lihue

Tue 3/10

7:28 am-8:55 pm

1 stop10h 27m

$359

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Sun 3/1

8:41 am-10:22 pm

1 stop15h 41m

Lihue

Wed 3/4

12:49 pm-10:15 pm

1 stop7h 26m

$409

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 5/19

12:01 pm-9:26 pm

1 stop12h 25m

Lihue

Mon 5/25

10:26 pm-11:07 am

1 stop9h 41m

$428

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Sun 4/12

8:32 am-2:08 pm

1 stop8h 36m

Lihue

Sun 4/19

6:47 am-10:59 pm

1 stop13h 12m

$431

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 3/3

8:41 am-8:28 pm

1 stop13h 47m

Lihue

Sat 3/7

10:12 am-11:15 pm

1 stop11h 03m

$434

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 2/24

8:41 am-10:22 pm

1 stop15h 41m

Lihue

Wed 2/25

9:57 am-11:08 am

2 stops23h 11m

$436

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Sat 3/7

8:41 am-5:02 pm

1 stop10h 21m

Lihue

Thu 3/12

8:52 am-8:55 pm

1 stop9h 03m

$444

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Fri 3/6

8:41 am-8:02 am

1 stop25h 21m

Lihue

Mon 3/16

9:00 pm-8:55 pm

1 stop20h 55m

$448

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 2/12

6:00 am-7:49 pm

2 stops15h 49m

Lihue

Thu 2/19

10:40 pm-4:02 pm

2 stops15h 22m

$449

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 4/29

11:05 am-4:10 pm

1 stop8h 05m

Lihue

Wed 5/6

8:20 am-10:15 pm

2 stops10h 55m

$452

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 22 results
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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 $175). 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 January 29, 2026.
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
11,808 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,808 reviews
Alaska Airlines
8.0
Very good
11,808 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Southwest
8.0
Very good
4,267 reviews
Alaska Airlines
8.0
Very good
11,808 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Delta
7.9
Good
8,127 reviews
Alaska Airlines
8.0
Very good
11,808 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
United Airlines
7.4
Good
9,215 reviews
Alaska Airlines
8.0
Very good
11,808 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

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?

    Alaska Airlines can get you from Ontario to Kaua'i in just under 12h 25m. 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?

    $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 $175). 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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Alternative routes for Ontario to Kaua'i

See prices for flight routes from nearby airports that may be better suited for you.
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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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$216Average$326FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$377Average$643FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$393Average$640FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$404Average$610FlexibilityNo cancel feeOn-time63%

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