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Kaua'i

$155+ 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LIH
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
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 July 31, 2025.

Round-trip from

$314
(Alaska Airlines)

One-way from

$155
(Alaska Airlines)

Popular in

June

Cheapest in

January

Average price

$566
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. 18% potential increase in price ($100 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 31, 2025.

This Alaska Airlines deal was found by Cheapflights users on 7/31. 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 9/226:00 amONT - LIH
1 stop10h 25mAlaska Airlines
Mon 9/2210:30 pmLIH - ONT
1 stop9h 14mAlaska Airlines
Deal found 7/31$314
This Delta deal was found by Cheapflights users on 7/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2511:40 amONT - LIH
1 stop10h 23mDelta
Wed 9/39:40 pmLIH - ONT
1 stop10h 10mDelta
Deal found 7/28$317
This American Airlines deal was found by Cheapflights users on 7/28. 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 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
Sat 9/209:40 pmLIH - ONT
1 stop17h 32mAmerican Airlines
Deal found 7/28$375
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Sun 9/141:42 pmONT - LIH
1 stop9h 16mUnited Airlines
Sun 9/2111:10 pmLIH - ONT
1 stop10h 03mUnited Airlines
Deal found 7/31$419
This Southwest deal was found by Cheapflights users on 7/29. 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 10/156:00 amONT - LIH
2 stops11h 35mSouthwest
Wed 10/2910:00 amLIH - ONT
1 stop9h 00mSouthwest
Deal found 7/29$426
This CheapTickets.ch deal was found by Cheapflights users on 7/30. 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 CheapTickets.ch is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/296:00 amONT - LIH
1 stop10h 25mHawaiian Airlines
Fri 10/107:40 amLIH - ONT
1 stop9h 57mHawaiian Airlines
Deal found 7/30$467

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 July 31, 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

Mon 9/22

6:00 am-1:25 pm

1 stop10h 25m

Lihue

Mon 9/22

10:30 pm-10:44 am

1 stop9h 14m

$314

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 8/25

11:40 am-7:03 pm

1 stop10h 23m

Lihue

Wed 9/3

9:40 pm-10:50 am

1 stop10h 10m

$317

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Sun 9/14

6:10 am-2:27 pm

1 stop11h 17m

Lihue

Sat 9/20

9:40 pm-6:12 pm

1 stop17h 32m

$375

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Sun 9/14

1:42 pm-7:58 pm

1 stop9h 16m

Lihue

Sun 9/21

11:10 pm-12:13 pm

1 stop10h 03m

$419

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 10/15

6:00 am-2:35 pm

2 stops11h 35m

Lihue

Wed 10/29

10:00 am-10:00 pm

1 stop9h 00m

$426

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 1/12

9:50 am-5:02 pm

1 stop9h 12m

$155

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Fri 9/12

11:50 am-6:59 pm

1 stop10h 09m

$192

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Sun 8/31

1:42 pm-7:58 pm

1 stop9h 16m

$210

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 10/20

1:31 pm-9:31 pm

1 stop11h 00m

$218

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 12/24

10:33 am-6:42 pm

1 stop10h 09m

$228

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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.

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 July 31, 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
10,000 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

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

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

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
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

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
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

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
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

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?

    $155 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $192 and $210, 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$177Average$335FlexibilityNo cancel feeOn-time71%
DeltaCheapest$230Average$380FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$361Average$598FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$363Average$571FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$365Average$539FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$385Average$617FlexibilityNo cancel feeOn-time75%

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