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Kaua'i

$145+ 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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LIH
Aug 24 — Aug 311
Mon 8/24
Mon 8/31
1 adult, Economy
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Cheap 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 25, 2026.

This Delta deal was found by Cheapflights users on 7/21. 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.
Sun 12/67:00 am
ONT
-
LIH
1 stop15h 22m
Delta
Tue 12/1510:45 pm
LIH
-
ONT
1 stop10h 31m
Delta
Deal found 7/21$290
This Delta deal was found by Cheapflights users on 7/21. 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.
Sun 12/67:00 am
ONT
-
LIH
1 stop15h 22m
Delta
Fri 12/1110:45 pm
LIH
-
ONT
2 stops15h 27m
Delta
Deal found 7/21$296
This Delta deal was found by Cheapflights users on 7/22. 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 8/3111:56 am
ONT
-
LIH
1 stop10h 20m
Delta
Thu 9/109:54 pm
LIH
-
ONT
1 stop10h 20m
Delta
Deal found 7/22$310
This Southwest deal was found by Cheapflights users on 7/22. 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.
Tue 11/109:00 am
ONT
-
LIH
1 stop11h 05m
Southwest
Tue 11/178:25 am
LIH
-
ONT
1 stop11h 45m
Southwest
Deal found 7/22$318
This Delta deal was found by Cheapflights users on 7/23. 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 8/1711:56 am
ONT
-
LIH
1 stop10h 20m
Delta
Tue 8/259:55 pm
LIH
-
ONT
1 stop10h 21m
Delta
Deal found 7/23$344
This Delta deal was found by Cheapflights users on 7/21. 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.
Sun 12/67:00 am
ONT
-
LIH
1 stop15h 22m
Delta
Thu 12/1010:45 pm
LIH
-
ONT
2 stops23h 03m
Delta
Deal found 7/21$356
This Delta deal was found by Cheapflights users on 7/21. 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 8/1711:56 am
ONT
-
LIH
1 stop10h 20m
Delta
Wed 8/269:55 pm
LIH
-
ONT
1 stop10h 21m
Delta
Deal found 7/21$365
This Delta deal was found by Cheapflights users on 7/21. 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 12/37:00 am
ONT
-
LIH
1 stop15h 22m
Delta
Tue 12/1510:45 pm
LIH
-
ONT
1 stop10h 31m
Delta
Deal found 7/21$369

Find 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 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$290
(Delta)

One-way from

$145
(Delta)

Popular in

December

Cheapest in

February

Average price

$557
Provider with most accurate pricing for Los Angeles Los Angeles-Lihue flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles 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. 3% potential increase in price ($15 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 July 2026
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 July 25, 2026.
Use the filters below to find and compare flights from Ontario to Kaua'i that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 8/17

11:56 am-7:16 pm

1 stop10h 20m

Lihue

Wed 8/26

9:55 pm-11:16 am

1 stop10h 21m

$344

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 9/15

5:45 am-4:10 pm

2 stops13h 25m

Lihue

Tue 9/22

7:10 pm-7:55 am

2 stops9h 45m

$388

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 8/25

9:31 am-9:57 pm

1 stop15h 26m

Lihue

Wed 8/26

9:00 am-10:10 pm

1 stop10h 10m

$415

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 12/7

9:00 am-6:05 pm

1 stop11h 05m

Lihue

Mon 12/14

6:15 am-5:45 pm

2 stops9h 30m

$435

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Fri 10/30

11:56 am-7:14 pm

1 stop10h 18m

Lihue

Wed 11/11

10:45 pm-11:16 am

1 stop10h 31m

$444

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 11/4

12:00 pm-10:19 pm

1 stop12h 19m

Lihue

Mon 11/9

7:21 pm-9:32 pm

1 stop24h 11m

$453

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 11/2

1:52 pm-10:30 pm

1 stop10h 38m

Lihue

Fri 11/13

11:59 pm-12:01 pm

1 stop10h 02m

$454
Quickest round-trip

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 8/20

1:56 pm-7:44 pm

1 stop8h 48m

Lihue

Thu 8/27

10:48 pm-12:12 pm

1 stop10h 24m

$479

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 11/4

6:00 am-8:14 pm

2 stops16h 14m

Lihue

Mon 11/9

10:45 pm-11:16 am

1 stop10h 31m

$490
Cheapest one-way

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 9/23

11:54 am-7:10 pm

1 stop10h 16m

$145

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/21

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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, September is the cheapest month in which you can book a flight from Ontario to Kaua'i (average of $361). Flying from Ontario to Kaua'i in December is currently the most expensive (average of $1,213). 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 25, 2026.
Get a feel of what it's like to fly with Southwest and Alaska Airlines 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.
Southwest
8.0
Very good
4,233 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
Southwest
8.0
Very good
4,233 reviews
Southwest
8.0
Very good
4,233 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
Alaska Airlines
7.9
Good
12,713 reviews
Southwest
8.0
Very good
4,233 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

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?

    Delta and Southwest can get you from Ontario to Kaua'i in just under 10h 20m. Your travel time can differ by up to 3h 05m. 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, September is the cheapest month in which you can book a flight from Ontario to Kaua'i (average of $361). Flying from Ontario to Kaua'i in December is currently the most expensive (average of $1,213). 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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Top 2 airlines flying from Ontario to Kaua'i

Discover the top 2 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 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$329Average$574FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$471Average$588FlexibilityNo cancel feeOn-time63%

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