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Kaua'i

$162+ 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LIH
Feb 23 — Mar 21
Mon 2/23
Mon 3/2
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 January 24, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/21. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/303:26 pm
ONT
-
LIH
1 stop33h 00m
Alaska Airlines
Thu 5/710:26 pm
LIH
-
ONT
1 stop17h 39m
Alaska Airlines
Deal found 1/21$284
This Kiwi.com deal was found by Cheapflights users on 1/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/258:41 am
ONT
-
LIH
1 stop11h 21m
Multiple Airlines
Tue 3/311:19 pm
LIH
-
ONT
1 stop9h 49m
Multiple Airlines
Deal found 1/22$305
This Delta deal was found by Cheapflights users on 1/22. 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.
Tue 4/217:30 am
ONT
-
LIH
1 stop13h 10m
Delta
Tue 5/58:25 pm
LIH
-
ONT
1 stop11h 48m
Delta
Deal found 1/22$333
This Alaska Airlines deal was found by Cheapflights users on 1/22. 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 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 3/910:19 pm
LIH
-
ONT
1 stop9h 49m
Multiple Airlines
Deal found 1/22$340
This Kiwi.com deal was found by Cheapflights users on 1/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2412:02 pm
ONT
-
LIH
1 stop12h 16m
Multiple Airlines
Tue 3/37:45 pm
LIH
-
ONT
1 stop24h 30m
Multiple Airlines
Deal found 1/23$346
This Delta deal was found by Cheapflights users on 1/22. 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.
Tue 4/217:30 am
ONT
-
LIH
1 stop13h 10m
Delta
Sun 5/109:45 pm
LIH
-
ONT
1 stop16h 31m
Delta
Deal found 1/22$356
This Alaska Airlines deal was found by Cheapflights users on 1/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/38:41 am
ONT
-
LIH
1 stop12h 30m
Multiple Airlines
Tue 3/1010:27 am
LIH
-
ONT
1 stop7h 28m
Multiple Airlines
Deal found 1/22$359
This Alaska Airlines deal was found by Cheapflights users on 1/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1312:01 pm
ONT
-
LIH
1 stop12h 25m
Multiple Airlines
Wed 5/208:19 am
LIH
-
ONT
1 stop10h 48m
Multiple Airlines
Deal found 1/22$364
This Delta deal was found by Cheapflights users on 1/22. 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.
Tue 4/217:30 am
ONT
-
LIH
1 stop13h 10m
Delta
Thu 5/79:45 pm
LIH
-
ONT
2 stops15h 29m
Delta
Deal found 1/22$367
This Delta deal was found by Cheapflights users on 1/22. 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.
Tue 4/217:30 am
ONT
-
LIH
1 stop13h 10m
Delta
Mon 5/119:45 pm
LIH
-
ONT
1 stop16h 31m
Delta
Deal found 1/22$369

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 24, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$284
(Alaska Airlines)

One-way from

$162
(Alaska Airlines)

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. 3% 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 24, 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

Tue 4/21

7:30 am-5:40 pm

1 stop13h 10m

Lihue

Mon 5/11

9:45 pm-5:16 pm

1 stop16h 31m

$369

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 4/21

7:30 am-5:40 pm

1 stop13h 10m

Lihue

Sun 5/10

9:45 pm-4:14 pm

2 stops15h 29m

$373

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Sun 4/12

8:32 am-2:08 pm

1 stop8h 36m

Lihue

Thu 4/16

6:47 am-10:59 pm

1 stop13h 12m

$396

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 3/2

6:14 am-3:50 pm

1 stop11h 36m

Lihue

Thu 3/5

10:27 am-10:15 pm

1 stop9h 48m

$397

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 2/24

6:05 am-1:15 pm

1 stop9h 10m

Lihue

Tue 3/3

9:15 pm-9:20 am

2 stops10h 05m

$398

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 4/21

7:30 am-5:40 pm

1 stop13h 10m

Lihue

Thu 5/7

9:45 pm-12:49 pm

1 stop12h 04m

$401

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Fri 4/17

8:32 am-2:08 pm

1 stop8h 36m

Lihue

Mon 4/20

6:47 am-10:59 pm

1 stop13h 12m

$407

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 4/22

7:30 am-5:40 pm

1 stop13h 10m

Lihue

Sun 5/10

9:45 pm-5:16 pm

1 stop16h 31m

$408

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 4/22

7:30 am-5:40 pm

1 stop13h 10m

Lihue

Thu 5/7

9:45 pm-4:14 pm

2 stops15h 29m

$419

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 4/22

7:30 am-5:40 pm

1 stop13h 10m

Lihue

Mon 5/11

9:45 pm-5:16 pm

1 stop16h 31m

$421

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/23

Showing 1-10 of 20 results
1
2

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 $174). 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 24, 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
11,785 reviews

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

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
11,785 reviews
Alaska Airlines
8.0
Very good
11,785 reviews

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

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
4,268 reviews
Alaska Airlines
8.0
Very good
11,785 reviews

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

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
8,112 reviews
Alaska Airlines
8.0
Very good
11,785 reviews

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

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
9,193 reviews
Alaska Airlines
8.0
Very good
11,785 reviews

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

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?

    Delta and Southwest can get you from Ontario to Kaua'i in just under 9h 10m. Your travel time can differ by up to 4h. 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 $174). 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.

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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 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$216Average$326FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$393Average$640FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$404Average$610FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$406Average$649FlexibilityNo cancel feeOn-time75%

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