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Ontario

$177+ Cheap flights from Kaua'i to Ontario (ONT)

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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
LIH — ONT
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Kaua'i to Ontario

Keep the following information in mind while searching for Kaua'i to Ontario flight deals. Data was last updated September 16, 2025.

Round-trip from

$375
(Alaska Airlines)

One-way from

$177
(Trip.com)

Popular in

June

Cheapest in

November

Average price

$371
From Kaua'i to Ontario
Search Deals
One-way flight from Kaua'i to Ontario
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Highest demand for flights based on searches. 11% potential increase in price ($55 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Kaua'i to Ontario

Cheapest flights from Kaua'i to Ontario
Explore the most affordable flight options available from Kaua'i to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 12/411:25 pmLIH - ONT
1 stop9h 54mAlaska Airlines
Mon 12/812:13 pmONT - LIH
1 stop12h 12mAlaska Airlines
Deal found 9/15$375
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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 10/2210:47 amLIH - ONT
1 stop10h 16mAlaska Airlines
Tue 10/289:45 amONT - LIH
1 stop10h 37mAlaska Airlines
Deal found 9/14$432
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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.
Tue 9/2310:15 amLIH - ONT
1 stop7h 55mAlaska Airlines
Thu 9/2511:39 amONT - LIH
1 stop12h 51mAlaska Airlines
Deal found 9/16$527
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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 9/2210:30 pmLIH - ONT
1 stop9h 14mAlaska Airlines
Thu 9/2511:39 amONT - LIH
1 stop12h 51mAlaska Airlines
Deal found 9/16$531
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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.
Tue 9/1610:30 pmLIH - ONT
1 stop9h 14mAlaska Airlines
Fri 9/2610:09 amONT - LIH
1 stop9h 08mAlaska Airlines
Deal found 9/16$535
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 9/1610:15 amLIH - ONT
1 stop7h 55mAlaska Airlines
Thu 9/2511:39 amONT - LIH
1 stop12h 51mAlaska Airlines
Deal found 9/15$560
This Delta deal was found by Cheapflights users on 9/16. 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.
Thu 10/99:40 pmLIH - ONT
1 stop22h 01mDelta
Wed 10/1511:48 amONT - LIH
1 stop10h 17mDelta
Deal found 9/16$570
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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.
Tue 9/238:30 amLIH - ONT
1 stop9h 40mAlaska Airlines
Fri 9/2610:09 amONT - LIH
1 stop8h 39mAlaska Airlines
Deal found 9/16$585
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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 9/2210:30 pmLIH - ONT
1 stop9h 14mAlaska Airlines
Fri 9/2610:09 amONT - LIH
1 stop9h 08mAlaska Airlines
Deal found 9/16$590
This Delta deal was found by Cheapflights users on 9/16. 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.
Tue 9/234:16 pmLIH - ONT
2 stops15h 53mDelta
Thu 9/2511:50 amONT - LIH
1 stop10h 09mDelta
Deal found 9/16$612
This Delta deal was found by Cheapflights users on 9/16. 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.
Mon 9/227:55 pmLIH - ONT
2 stops12h 14mDelta
Thu 9/2511:50 amONT - LIH
1 stop10h 09mDelta
Deal found 9/16$632
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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 12/2211:59 amLIH - ONT
1 stop10h 00mAlaska Airlines
Mon 12/296:00 amONT - LIH
1 stop10h 25mAlaska Airlines
Deal found 9/14$673

Cheapflights Fare Finder

 
Customize your flight search to find flights from Kaua'i to Ontario 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 September 16, 2025.
Use the filters below to find and compare flights from Kaua'i to Ontario that are best for you.

Fly from

Kaua'i

Fly to

Ontario

Route

Depart

Return

Price

LihueOntario

LIH - ONT

LIHONT

Lihue

Thu 12/4

11:25 pm-11:19 am

1 stop9h 54m

Ontario

Mon 12/8

12:13 pm-10:25 pm

1 stop12h 12m

$375

LihueOntario

LIH - ONT

LIHONT

Lihue

Wed 10/22

10:47 am-12:03 am

1 stop10h 16m

Ontario

Tue 10/28

9:45 am-5:22 pm

1 stop10h 37m

$432

LihueOntario

LIH - ONT

LIHONT

Lihue

Tue 3/10

11:14 am-9:55 pm

1 stop7h 41m

Ontario

Wed 3/11

9:50 am-4:57 pm

1 stop10h 07m

$468

LihueOntario

LIH - ONT

LIHONT

Lihue

Thu 10/9

9:40 pm-10:41 pm

1 stop22h 01m

Ontario

Wed 10/15

11:48 am-7:05 pm

1 stop10h 17m

$570

LihueOntario

LIH - ONT

LIHONT

Lihue

Tue 3/10

9:09 am-9:55 pm

2 stops9h 46m

Ontario

Wed 3/11

9:50 am-4:57 pm

1 stop10h 07m

$600

LihueOntario

LIH - ONT

LIHONT

Lihue

Mon 12/22

11:59 am-11:59 pm

1 stop10h 00m

Ontario

Mon 12/29

6:00 am-2:25 pm

1 stop10h 25m

$673

LihueOntario

LIH - ONT

LIHONT

Lihue

Thu 11/6

6:49 am-5:14 pm

1 stop8h 25m

$183

LihueOntario

LIH - ONT

LIHONT

Lihue

Thu 1/8

10:10 pm-10:39 am

1 stop10h 29m

$188

LihueOntario

LIH - ONT

LIHONT

Lihue

Thu 12/4

11:25 pm-11:19 am

1 stop9h 54m

$188

LihueOntario

LIH - ONT

LIHONT

Lihue

Thu 2/19

12:37 pm-9:55 pm

1 stop7h 18m

$204

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 17 results
1
2

Best time to book a flight from Kaua'i to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Kaua'i 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 Kaua'i to Ontario

What is the cheapest month to book a flight from Kaua'i to Ontario?

Currently, August is the cheapest month in which you can book a flight from Kaua'i to Ontario (average of $246). Flying from Kaua'i to Ontario in March is currently the most expensive (average of $327). 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 Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated September 16, 2025.
Read through reviews of airlines operating flights from Kaua'i to Ontario, such as Southwest. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Kaua'i to Ontario. 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 into for flights to Ontario from Kaua'i?

    Most people fly into Ontario (ONT) if they book a flight to Ontario from Kaua'i. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

  • How long is the flight from Kaua'i to Ontario?

    For as low as $468, Alaska Airlines can have you in Ontario from Kaua'i in 7h 41m. Airlines will cover a distance of 2657 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from Kaua'i to Ontario that include hotel bookings?

    Yes. In addition to deals on Kaua'i to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Kaua'i to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kaua'i to Ontario.

  • Can I find deals for business class flights from Kaua'i to Ontario?

    Yes. Cheapflights offers flight deals from Kaua'i to Ontario 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 Kaua'i to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Kaua'i to Ontario (average of $246). Flying from Kaua'i to Ontario in March is currently the most expensive (average of $327). 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 Kaua'i to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Kaua'i to Ontario

Discover the top airline that operate flights from Kaua'i to Ontario. 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$321Average$517FlexibilityNo cancel feeOn-time63%

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