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 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LIH
Apr 11 — Apr 181
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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 12, 2026.

This Delta deal was found by Cheapflights users on 3/11. 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 4/217:00 am
ONT
-
LIH
1 stop13h 40m
Delta
Thu 4/238:20 pm
LIH
-
ONT
1 stop14h 19m
Delta
Deal found 3/11$358
This Delta deal was found by Cheapflights users on 3/11. 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.
Thu 4/167:00 am
ONT
-
LIH
1 stop13h 40m
Delta
Tue 4/288:20 pm
LIH
-
ONT
1 stop14h 19m
Delta
Deal found 3/11$370
This Southwest deal was found by Cheapflights users on 3/10. 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.
Tue 4/2111:05 am
ONT
-
LIH
1 stop8h 05m
Southwest
Fri 4/249:10 pm
LIH
-
ONT
1 stop12h 05m
Southwest
Deal found 3/10$374
This Alaska Airlines deal was found by Cheapflights users on 3/7. 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 4/288:30 am
ONT
-
LIH
1 stop9h 05m
Multiple Airlines
Wed 4/296:40 pm
LIH
-
ONT
1 stop23h 30m
Multiple Airlines
Deal found 3/7$379
This CheapOair deal was found by Cheapflights users on 3/7. 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 4/2210:39 am
ONT
-
LIH
1 stop13h 47m
Alaska Airlines
Mon 4/2710:26 pm
LIH
-
ONT
1 stop13h 06m
Alaska Airlines
Deal found 3/7$387
This Alaska Airlines deal was found by Cheapflights users on 3/11. 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 5/1412:04 pm
ONT
-
LIH
1 stop12h 22m
Alaska Airlines
Tue 5/1910:26 pm
LIH
-
ONT
1 stop9h 46m
Alaska Airlines
Deal found 3/11$389
This Southwest deal was found by Cheapflights users on 3/10. 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 4/2911:05 am
ONT
-
LIH
1 stop8h 05m
Southwest
Sun 5/37:10 pm
LIH
-
ONT
2 stops10h 35m
Southwest
Deal found 3/10$390
This Delta deal was found by Cheapflights users on 3/10. 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.
Thu 4/307:00 am
ONT
-
LIH
1 stop13h 40m
Delta
Tue 5/58:20 pm
LIH
-
ONT
1 stop11h 53m
Delta
Deal found 3/10$398
This Delta deal was found by Cheapflights users on 3/11. 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 4/155:55 pm
ONT
-
LIH
1 stop26h 45m
Delta
Tue 4/288:20 pm
LIH
-
ONT
1 stop14h 19m
Delta
Deal found 3/11$404
This United Airlines deal was found by Cheapflights users on 3/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/181:27 pm
ONT
-
LIH
1 stop9h 26m
United Airlines
Sat 4/2511:00 pm
LIH
-
ONT
1 stop10h 20m
United Airlines
Deal found 3/11$406

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 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$358
(Delta)

One-way from

$176
(Alaska Airlines)

Popular in

June

Cheapest in

February

Average price

$457
Provider with most accurate pricing for Los Angeles Los Angeles-Lihue flight deals.
Provider most trusted by Cheapflights users for Los Angeles Los Angeles-Lihue flights.
From Ontario to Kaua'i
One-way flight from Ontario to Kaua'i
Highest demand for flights based on searches. 15% potential increase in price ($85 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Average for round-trip flights in March 2026

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 12, 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 4/28

8:30 am-2:35 pm

1 stop9h 05m

Lihue

Wed 4/29

7:55 pm-9:10 pm

1 stop22h 15m

$381

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 3/24

6:15 am-4:30 pm

2 stops13h 15m

Lihue

Mon 3/30

9:10 pm-1:25 pm

1 stop13h 15m

$466

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 7/6

2:09 pm-9:25 pm

1 stop10h 16m

Lihue

Mon 7/13

10:25 pm-11:14 am

1 stop9h 49m

$478

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Sun 4/12

8:32 am-10:29 am

1 stop28h 57m

Lihue

Sun 4/19

6:47 am-10:59 pm

1 stop13h 12m

$517

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 7/30

7:00 am-7:20 pm

1 stop15h 20m

Lihue

Mon 8/3

9:45 pm-11:14 am

1 stop10h 29m

$521
Quickest round-trip

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 4/20

6:00 am-11:23 am

1 stop8h 23m

Lihue

Mon 4/27

11:00 pm-9:56 am

1 stop7h 56m

$544

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 7/15

7:00 am-7:20 pm

1 stop15h 20m

Lihue

Tue 7/28

9:45 pm-12:49 pm

1 stop12h 04m

$546

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Sat 5/9

3:26 pm-8:26 am

2 stops20h 00m

Lihue

Sat 5/16

10:26 pm-11:10 am

1 stop9h 44m

$559

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 7/28

7:00 am-7:20 pm

1 stop15h 20m

Lihue

Fri 8/7

9:45 pm-10:40 pm

1 stop21h 55m

$580

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Sun 6/28

2:09 pm-9:25 pm

1 stop10h 16m

Lihue

Sun 7/5

10:25 pm-11:14 am

1 stop9h 49m

$584

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/7

Showing 1-10 of 23 resultsSorted by cheapest first
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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 $274). 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 12, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Southwest, 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.

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

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 and Alaska Airlines can get you from Ontario to Kaua'i in just under 10h 16m. Your travel time can differ by up to 2h 59m. 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 $274). 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 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$216Average$352FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$361Average$590FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$377Average$598FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$393Average$596FlexibilityNo cancel feeOn-time69%

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