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Kaua'i

$176+ 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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LIH
Dec 17 — Dec 241
Wed 12/17
Wed 12/24
1 adult, Economy
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Find 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 November 17, 2025.

This Alaska Airlines deal was found by Cheapflights users on 11/17. 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 12/86:00 amONT - LIH
1 stop11h 51mAlaska Airlines
Wed 12/1011:25 pmLIH - ONT
1 stop9h 54mAlaska Airlines
Deal found 11/17$361
This Alaska Airlines deal was found by Cheapflights users on 11/16. 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 12/86:00 amONT - LIH
1 stop11h 51mAlaska Airlines
Thu 12/119:28 amLIH - ONT
1 stop8h 55mAlaska Airlines
Deal found 11/16$385
This Alaska Airlines deal was found by Cheapflights users on 11/16. 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 12/1112:13 pmONT - LIH
1 stop12h 12mAlaska Airlines
Mon 12/1511:25 pmLIH - ONT
1 stop9h 54mAlaska Airlines
Deal found 11/16$439
This Alaska Airlines deal was found by Cheapflights users on 11/16. 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 12/1112:13 pmONT - LIH
1 stop12h 12mAlaska Airlines
Sun 12/1411:25 pmLIH - ONT
1 stop9h 54mAlaska Airlines
Deal found 11/16$447
This Delta deal was found by Cheapflights users on 11/17. 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 12/36:00 amONT - LIH
2 stops16h 10mDelta
Wed 12/109:50 pmLIH - ONT
1 stop11h 23mDelta
Deal found 11/17$450
This Alaska Airlines deal was found by Cheapflights users on 11/16. 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 12/157:00 amONT - LIH
1 stop10h 39mAlaska Airlines
Tue 12/237:17 pmLIH - ONT
1 stop24h 51mAlaska Airlines
Deal found 11/16$459
This Delta deal was found by Cheapflights users on 11/16. 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.
Fri 12/56:00 amONT - LIH
2 stops16h 10mDelta
Fri 12/129:50 pmLIH - ONT
1 stop11h 23mDelta
Deal found 11/16$470
This Alaska Airlines deal was found by Cheapflights users on 11/17. 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 12/37:00 amONT - LIH
1 stop9h 30mAlaska Airlines
Wed 12/1011:25 pmLIH - ONT
1 stop9h 54mAlaska Airlines
Deal found 11/17$473
This Southwest deal was found by Cheapflights users on 11/16. 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.
Mon 12/1510:15 amONT - LIH
1 stop7h 55mSouthwest
Tue 12/238:10 amLIH - ONT
2 stops11h 50mSouthwest
Deal found 11/16$487
This Alaska Airlines deal was found by Cheapflights users on 11/17. 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 12/177:00 amONT - LIH
1 stop10h 39mAlaska Airlines
Wed 12/2410:30 amLIH - ONT
1 stop9h 38mAlaska Airlines
Deal found 11/17$498

Cheap 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 November 17, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$352
(Alaska Airlines)

One-way from

$176
(Alaska Airlines)

Popular in

June

Cheapest in

January

Average price

$466
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 ($82 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 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 November 17, 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

Sat 1/24

4:03 pm-10:41 pm

1 stop32h 38m

Lihue

Wed 2/4

10:20 pm-10:59 am

1 stop10h 39m

$322

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 12/8

6:40 am-6:33 pm

2 stops13h 53m

Lihue

Mon 12/15

9:50 pm-11:13 am

1 stop11h 23m

$331

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 1/22

8:13 am-4:54 pm

1 stop10h 41m

Lihue

Mon 1/26

1:00 pm-10:28 pm

1 stop7h 28m

$352

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 1/26

8:13 am-4:54 pm

1 stop10h 41m

Lihue

Mon 2/2

6:47 am-10:28 pm

1 stop13h 41m

$352

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 1/6

10:44 am-10:23 pm

1 stop13h 39m

Lihue

Tue 1/13

1:00 pm-10:28 pm

1 stop7h 28m

$374

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 1/8

11:53 am-10:41 pm

1 stop12h 48m

Lihue

Fri 1/16

10:20 pm-8:36 pm

1 stop20h 16m

$381

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Sun 1/18

6:00 am-10:41 pm

1 stop18h 41m

Lihue

Sun 1/25

10:20 pm-11:56 pm

1 stop23h 36m

$384

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 1/12

8:13 am-4:54 pm

1 stop10h 41m

Lihue

Sun 1/18

10:20 pm-10:59 am

1 stop10h 39m

$415

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 1/1

8:00 am-3:31 pm

1 stop9h 31m

Lihue

Thu 1/8

10:20 pm-10:59 am

1 stop10h 39m

$435

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 2/9

8:13 am-4:54 pm

1 stop10h 41m

Lihue

Thu 2/19

6:48 am-10:15 pm

1 stop13h 27m

$436

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/16

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, 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 November 17, 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
11,309 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
11,309 reviews
Alaska Airlines
8.0
Very good
11,309 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Southwest
8.0
Very good
4,244 reviews
Alaska Airlines
8.0
Very good
11,309 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Delta
7.9
Good
8,006 reviews
Alaska Airlines
8.0
Very good
11,309 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Hawaiian Airlines
7.8
Good
2,809 reviews
Alaska Airlines
8.0
Very good
11,309 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
United Airlines
7.4
Good
9,014 reviews
Alaska Airlines
8.0
Very good
11,309 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

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 and Delta can get you from Ontario to Kaua'i in just under 13h 53m. Your travel time can differ by up to 18h 45m. There are 2657 mi between Ontario and Kaua'i. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 5 airlines flying from Ontario to Kaua'i

Discover the top 5 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 November 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$230Average$345FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$368Average$512FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$393Average$646FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$404Average$605FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$406Average$624FlexibilityNo cancel feeOn-time75%

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