HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$204+ 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 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
LIH — ONT
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Kaua'i to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 October 30, 2025.

This Delta deal was found by Cheapflights users on 10/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/249:40 pmLIH - ONT
1 stop11h 26mDelta
Sat 11/296:00 amONT - LIH
2 stops16h 04mDelta
Deal found 10/30$472
This Alaska Airlines deal was found by Cheapflights users on 10/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1011:25 pmLIH - ONT
1 stop9h 54mAlaska Airlines
Wed 12/316:00 amONT - LIH
1 stop10h 25mAlaska Airlines
Deal found 10/30$507
This Alaska Airlines deal was found by Cheapflights users on 10/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2512:00 pmLIH - ONT
1 stop11h 01mAlaska Airlines
Sat 11/297:50 amONT - LIH
1 stop10h 32mAlaska Airlines
Deal found 10/30$523
This Alaska Airlines deal was found by Cheapflights users on 10/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/87:26 amLIH - ONT
1 stop7h 48mAlaska Airlines
Mon 11/1011:59 amONT - LIH
1 stop12h 26mAlaska Airlines
Deal found 10/30$555
This Alaska Airlines deal was found by Cheapflights users on 10/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/316:00 amLIH - ONT
1 stop8h 14mAlaska Airlines
Wed 11/199:47 amONT - LIH
1 stop9h 30mAlaska Airlines
Deal found 10/29$573
This American Airlines deal was found by Cheapflights users on 10/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2010:39 pmLIH - ONT
1 stop8h 34mAmerican Airlines
Thu 11/276:11 amONT - LIH
1 stop11h 43mAmerican Airlines
Deal found 10/30$599
This Alaska Airlines deal was found by Cheapflights users on 10/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/241:20 pmLIH - ONT
1 stop8h 35mAlaska Airlines
Fri 11/2810:49 amONT - LIH
1 stop13h 43mAlaska Airlines
Deal found 10/30$611
This United Airlines deal was found by Cheapflights users on 10/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/56:00 amLIH - ONT
2 stops9h 34mUnited Airlines
Wed 11/126:00 amONT - LIH
1 stop9h 13mUnited Airlines
Deal found 10/29$762
This United Airlines deal was found by Cheapflights users on 10/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/86:00 amLIH - ONT
2 stops9h 34mUnited Airlines
Mon 11/106:00 amONT - LIH
1 stop9h 13mUnited Airlines
Deal found 10/30$770
This Alaska Airlines deal was found by Cheapflights users on 10/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/56:49 amLIH - ONT
1 stop8h 25mAlaska Airlines
Wed 11/129:47 amONT - LIH
1 stop10h 13mAlaska Airlines
Deal found 10/29$1,908
This Alaska Airlines deal was found by Cheapflights users on 10/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/197:26 amLIH - ONT
1 stop7h 48mAlaska Airlines
Mon 11/247:50 amONT - LIH
1 stop12h 07mAlaska Airlines
Deal found 10/30$2,102
This Alaska Airlines deal was found by Cheapflights users on 10/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/279:20 amLIH - ONT
1 stop9h 11mAlaska Airlines
Mon 12/17:50 amONT - LIH
1 stop12h 07mAlaska Airlines
Deal found 10/29$2,488

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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$408
(Alaska Airlines)

One-way from

$204
(Alaska Airlines)

Popular in

June

Cheapest in

November

Average price

$431
Provider with most accurate pricing for Lihue-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lihue-Los Angeles flights.
Search Deals
From Kaua'i to Ontario
Search Deals
One-way flight from Kaua'i to Ontario
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($50 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

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 October 30, 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 1/8

10:20 pm-10:59 am

1 stop10h 39m

Ontario

Tue 1/20

8:13 am-4:54 pm

1 stop10h 41m

$413

LihueOntario

LIH - ONT

LIHONT

Lihue

Mon 1/12

10:20 pm-8:36 pm

1 stop20h 16m

Ontario

Wed 1/21

11:53 am-10:42 pm

1 stop12h 49m

$423

LihueOntario

LIH - ONT

LIHONT

Lihue

Mon 1/12

10:20 pm-3:08 pm

1 stop14h 48m

Ontario

Sat 1/17

4:03 pm-10:42 pm

1 stop32h 39m

$428

LihueOntario

LIH - ONT

LIHONT

Lihue

Mon 1/12

7:49 pm-3:08 pm

2 stops17h 19m

Ontario

Sun 1/18

6:00 am-10:42 pm

1 stop18h 42m

$437

LihueOntario

LIH - ONT

LIHONT

Lihue

Tue 3/10

12:03 pm-9:55 pm

1 stop6h 52m

Ontario

Wed 3/11

9:50 am-4:17 pm

1 stop9h 27m

$442

LihueOntario

LIH - ONT

LIHONT

Lihue

Thu 1/8

7:49 pm-3:08 pm

2 stops17h 19m

Ontario

Sat 1/17

4:03 pm-10:42 pm

1 stop32h 39m

$442

LihueOntario

LIH - ONT

LIHONT

Lihue

Mon 1/12

10:20 pm-5:05 pm

2 stops16h 45m

Ontario

Tue 1/20

8:13 am-4:54 pm

1 stop10h 41m

$450

LihueOntario

LIH - ONT

LIHONT

Lihue

Thu 1/8

7:49 pm-3:08 pm

2 stops17h 19m

Ontario

Wed 1/21

11:53 am-10:23 pm

2 stops12h 30m

$452

LihueOntario

LIH - ONT

LIHONT

Lihue

Thu 2/5

1:00 pm-10:28 pm

1 stop7h 28m

$204

LihueOntario

LIH - ONT

LIHONT

Lihue

Wed 12/17

11:58 am-9:43 pm

1 stop7h 45m

$204

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 20 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, January is the cheapest month in which you can book a flight from Kaua'i to Ontario (average of $138). Flying from Kaua'i to Ontario in May is currently the most expensive (average of $284). 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 October 30, 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
4,243 reviews

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

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
4,243 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

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 $413, Alaska Airlines can have you in Ontario from Kaua'i in 10h 39m. Airlines will cover a distance of 2657 mi.

  • 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, January is the cheapest month in which you can book a flight from Kaua'i to Ontario (average of $138). Flying from Kaua'i to Ontario in May is currently the most expensive (average of $284). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Kaua'i to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Honolulu to Las Vegas flights
Honolulu to Los Angeles flights
Honolulu to San Francisco flights
Honolulu to San Diego flights
Kailua-Kona to Los Angeles flights
Honolulu to San Jose flights
Honolulu to Long Beach flights
Honolulu to Oakland flights
Kahului to Las Vegas flights
Honolulu to Ontario flights
Kailua-Kona to Las Vegas flights
Kahului to Los Angeles flights
Honolulu to Sacramento flights
Honolulu to Burbank flights
Kailua-Kona to San Diego flights
Kailua-Kona to San Francisco flights
Honolulu to Santa Ana flights
Lihue to Los Angeles flights
Hilo to Las Vegas flights
Kahului to San Francisco flights
Kahului to Sacramento flights
Lihue to Las Vegas flights
Lihue to San Francisco flights
Kailua-Kona to Ontario flights
Honolulu to Reno flights
Kahului to San Diego flights
Lihue to Palm Springs flights
Kahului to San Jose flights
Kahului to Oakland flights
Kailua-Kona to Sacramento flights
Lihue to San Diego flights
Lihue to San Jose flights
Kailua-Kona to San Jose flights
Honolulu to Palm Springs flights
Lihue to Oakland flights
Lihue to Sacramento flights
Hilo to San Diego flights
Lihue to Ontario flights
Kahului to Ontario flights
Kahului to Long Beach flights
Kailua-Kona to Oakland flights
Kahului to Santa Ana flights
Hilo to San Francisco flights
Honolulu to Redding flights
Hilo to Ontario flights
Kahului to Reno flights
Hilo to Los Angeles flights
Hilo to Long Beach flights
Honolulu to Fresno flights
Kahului to Burbank flights

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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$321Average$517FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.