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Kaua'i

$177+ 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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LIH
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Round-trip from

$353
(Delta)

One-way from

$177
(Southwest)

Popular in

June

Cheapest in

January

Average price

$616
From Ontario to Kaua'i
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One-way flight from Ontario to Kaua'i
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Highest demand for flights based on searches. 17% potential increase in price ($94 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 12, 2025.

This Delta deal was found by Cheapflights users on 6/10. 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 8/2811:40 amONT - LIH
1 stop10h 23mDelta
Mon 9/19:40 pmLIH - ONT
1 stop10h 10mDelta
Deal found 6/10$353
This Southwest deal was found by Cheapflights users on 6/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/86:00 amONT - LIH
2 stops11h 35mSouthwest
Wed 10/1510:00 amLIH - ONT
1 stop9h 00mSouthwest
Deal found 6/11$406
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/119:00 amONT - LIH
1 stop28h 30mAlaska Airlines
Tue 8/1911:01 amLIH - ONT
2 stops20h 43mAlaska Airlines
Deal found 6/10$506
This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/146:10 amONT - LIH
1 stop11h 17mAmerican Airlines
Fri 9/199:45 pmLIH - ONT
1 stop8h 36mAmerican Airlines
Deal found 6/10$523
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Tue 8/196:00 amONT - LIH
1 stop8h 25mUnited Airlines
Thu 8/2812:57 pmLIH - ONT
1 stop20h 16mUnited Airlines
Deal found 6/11$554

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 June 12, 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

Thu 8/28

11:40 am-7:03 pm

1 stop10h 23m

Lihue

Wed 9/3

9:40 pm-10:50 am

1 stop10h 10m

$353

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 8/14

5:50 am-4:00 pm

1 stop13h 10m

Lihue

Thu 8/21

7:05 pm-8:15 am

2 stops10h 10m

$488

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 8/11

9:00 am-10:30 am

1 stop28h 30m

Lihue

Tue 8/19

11:01 am-10:44 am

2 stops20h 43m

$506

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 8/19

6:00 am-11:25 am

1 stop8h 25m

Lihue

Thu 8/28

12:57 pm-12:13 pm

1 stop20h 16m

$554

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 9/4

9:55 am-4:00 pm

1 stop9h 05m

$177

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 9/3

11:40 am-7:03 pm

1 stop10h 23m

$212

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 9/1

6:17 am-1:56 pm

1 stop10h 39m

$213

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 9/4

8:35 am-3:47 pm

1 stop10h 12m

$229

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 8/19

6:00 am-3:51 pm

2 stops12h 51m

$254

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 8/25

1:42 pm-7:58 pm

1 stop9h 16m

$262

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 11 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 $440). Flying from Ontario to Kaua'i in June is currently the most expensive (average of $689). 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.

What is the cheapest time of day to fly from ONT to FUS?

Find hourly flight availability from Ontario to Kaua'i. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

When flying from Ontario to Kaua'i, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Kaua'i by month

Plan your trip to Kaua'i by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Kaua'i ranges from 2.2 - 6.7 inches per month. January is typically the wettest month, when rainfall can reach 6.7 in. June is typically the driest time to visit Kaua'i when rainfall is around 2.2 in.

Temperature in Kaua'i by month

Plan your trip to Kaua'i by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Kaua'i, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 69.8 F).

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 June 12, 2025.
Read through reviews of airlines operating flights from Ontario to Kaua'i, such as Alaska Airlines, Southwest and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • What are the cheapest airlines to fly from Ontario to Kaua'i one-way?

    $177 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on Delta and American Airlines, with prices starting from $212 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, January is the cheapest month in which you can book a flight from Ontario to Kaua'i (average of $440). Flying from Ontario to Kaua'i in June is currently the most expensive (average of $689). 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 6 airlines flying from Ontario to Kaua'i

Discover the top 6 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$177Average$385FlexibilityNo cancel feeOn-time71%
DeltaCheapest$236Average$381FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$340Average$533FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$361Average$594FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$363Average$571FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$428Average$625FlexibilityNo cancel feeOn-time75%

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