HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Kaua'i

$204+ 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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LIH
nov. 29 — dic. 61
sáb. 11/29
sáb. 12/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Kaua'i 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 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 octubre 30, 2025.

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.
dom. 12/77:00 amONT - LIH
1 stop9h 30mAlaska Airlines
vie. 12/1211:25 pmLIH - ONT
1 stop9h 54mAlaska Airlines
Deal found 10/29$413
This Alaska Airlines deal was found by Cheapflights users on 10/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/912:13 pmONT - LIH
1 stop12h 12mAlaska Airlines
dom. 12/1411:25 pmLIH - ONT
1 stop9h 54mAlaska Airlines
Deal found 10/28$422
This Alaska Airlines deal was found by Cheapflights users on 10/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/412:13 pmONT - LIH
1 stop12h 12mAlaska Airlines
sáb. 12/611:25 pmLIH - ONT
1 stop9h 54mAlaska Airlines
Deal found 10/28$431
This Alaska Airlines deal was found by Cheapflights users on 10/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/1112:13 pmONT - LIH
1 stop12h 12mAlaska Airlines
dom. 12/1411:25 pmLIH - ONT
1 stop9h 54mAlaska Airlines
Deal found 10/28$441
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/1212:13 pmONT - LIH
1 stop12h 12mAlaska Airlines
jue. 1/151:00 pmLIH - ONT
1 stop7h 28mAlaska Airlines
Deal found 10/30$469
This Alaska Airlines deal was found by Cheapflights users on 10/27. 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.
mié. 11/129:47 amONT - LIH
1 stop10h 13mAlaska Airlines
mié. 12/311:25 pmLIH - ONT
1 stop9h 54mAlaska Airlines
Deal found 10/27$470
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.
dom. 12/77:00 amONT - LIH
1 stop10h 39mAlaska Airlines
sáb. 12/1311:25 pmLIH - ONT
1 stop9h 54mAlaska Airlines
Deal found 10/29$483
This Alaska Airlines deal was found by Cheapflights users on 10/27. 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.
jue. 11/1311:59 amONT - LIH
1 stop12h 26mAlaska Airlines
mar. 11/1811:25 pmLIH - ONT
1 stop9h 40mAlaska Airlines
Deal found 10/27$486
This Alaska Airlines deal was found by Cheapflights users on 10/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/159:47 amONT - LIH
1 stop8h 30mAlaska Airlines
mar. 11/1811:25 pmLIH - ONT
1 stop9h 40mAlaska Airlines
Deal found 10/28$490
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/129:50 amONT - LIH
1 stop8h 25mSouthwest
jue. 1/158:10 amLIH - ONT
2 stops12h 00mSouthwest
Deal found 10/30$494
This KAYAK deal was found by Cheapflights users on 10/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/1112:13 pmONT - LIH
1 stop12h 12mAlaska Airlines
mar. 12/306:48 amLIH - ONT
1 stop13h 20mAlaska Airlines
Deal found 10/27$501

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 octubre 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

January

Average price

$418
Provider with most accurate pricing for Los Angeles-Lihue flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Lihue flights.
Search Deals
From Ontario to Kaua'i
Search Deals
One-way flight from Ontario to Kaua'i
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($87 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($16 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 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 octubre 30, 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

mié. 2/25

9:50 am-5:34 pm

1 stop9h 44m

Lihue

mié. 3/4

12:37 pm-9:55 pm

1 stop7h 18m

$408

OntarioLihue

ONT - LIH

ONTLIH

Ontario

dom. 12/7

7:00 am-2:30 pm

1 stop9h 30m

Lihue

vie. 12/12

11:25 pm-11:19 am

1 stop9h 54m

$413

OntarioLihue

ONT - LIH

ONTLIH

Ontario

mar. 12/9

12:13 pm-10:25 pm

1 stop12h 12m

Lihue

dom. 12/14

11:25 pm-11:19 am

1 stop9h 54m

$422

OntarioLihue

ONT - LIH

ONTLIH

Ontario

mar. 3/3

9:50 am-4:57 pm

1 stop9h 07m

Lihue

jue. 3/5

12:03 pm-9:55 pm

1 stop7h 52m

$428

OntarioLihue

ONT - LIH

ONTLIH

Ontario

jue. 1/15

8:13 am-4:54 pm

1 stop10h 41m

Lihue

jue. 1/22

11:00 am-10:28 pm

1 stop9h 28m

$430

OntarioLihue

ONT - LIH

ONTLIH

Ontario

jue. 1/15

8:13 am-4:54 pm

1 stop10h 41m

Lihue

mié. 1/21

11:00 am-10:28 pm

1 stop9h 28m

$430

OntarioLihue

ONT - LIH

ONTLIH

Ontario

lun. 1/12

11:53 am-10:42 pm

1 stop12h 49m

Lihue

sáb. 1/17

1:00 pm-10:28 pm

1 stop7h 28m

$456

OntarioLihue

ONT - LIH

ONTLIH

Ontario

jue. 1/29

11:53 am-10:23 pm

2 stops12h 30m

Lihue

jue. 2/5

7:49 pm-3:08 pm

2 stops17h 19m

$462

OntarioLihue

ONT - LIH

ONTLIH

Ontario

lun. 3/2

11:30 am-10:15 pm

1 stop12h 45m

Lihue

mar. 3/10

9:10 pm-6:17 pm

1 stop18h 07m

$462

OntarioLihue

ONT - LIH

ONTLIH

Ontario

mié. 11/12

9:47 am-6:00 pm

1 stop10h 13m

Lihue

mié. 12/3

11:25 pm-11:19 am

1 stop9h 54m

$470

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 20 results
1
2

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 $150). Flying from Ontario to Kaua'i in June is currently the most expensive (average of $269). 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 octubre 30, 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
11,220 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
11,220 reviews
Alaska Airlines
8.0
Very good
11,220 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Southwest
8.0
Very good
4,243 reviews
Alaska Airlines
8.0
Very good
11,220 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Delta
7.9
Good
7,998 reviews
Alaska Airlines
8.0
Very good
11,220 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Hawaiian Airlines
7.8
Good
2,798 reviews
Alaska Airlines
8.0
Very good
11,220 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
United Airlines
7.4
Good
8,996 reviews
Alaska Airlines
8.0
Very good
11,220 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

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?

    Alaska Airlines and Hawaiian Airlines can get you from Ontario to Kaua'i in just under 9h 07m. Your travel time can differ by up to 37m. There are 2657 mi between Ontario and Kaua'i. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $150). Flying from Ontario to Kaua'i in June is currently the most expensive (average of $269). 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 Ontario to Kaua'i

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

Top 5 airlines flying from Ontario to Kaua'i

Discover the top 5 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 octubre 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$230Average$345FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$265Average$512FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$393Average$646FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$404Average$605FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$417Average$624FlexibilityNo cancel feeOn-time75%

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.