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Kaua'i

$172+ 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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LIH
Aug 11 — Aug 181
Tue 8/11
Tue 8/18
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 12, 2026.

This Southwest deal was found by Cheapflights users on 7/8. 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.
Mon 8/248:00 am
ONT
-
LIH
1 stop13h 05m
Southwest
Thu 8/278:20 am
LIH
-
ONT
1 stop8h 50m
Southwest
Deal found 7/8$335
This Southwest deal was found by Cheapflights users on 7/10. 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.
Sun 9/138:00 am
ONT
-
LIH
1 stop13h 05m
Southwest
Thu 9/176:15 am
LIH
-
ONT
1 stop10h 55m
Southwest
Deal found 7/10$340
This Delta deal was found by Cheapflights users on 7/9. 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.
Wed 11/411:56 am
ONT
-
LIH
1 stop10h 18m
Delta
Tue 11/1710:45 pm
LIH
-
ONT
1 stop10h 31m
Delta
Deal found 7/9$343
This Delta deal was found by Cheapflights users on 7/8. 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 8/3011:56 am
ONT
-
LIH
1 stop10h 20m
Delta
Thu 9/109:54 pm
LIH
-
ONT
1 stop10h 20m
Delta
Deal found 7/8$344
This Delta deal was found by Cheapflights users on 7/10. 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 11/97:00 am
ONT
-
LIH
1 stop15h 22m
Delta
Mon 11/1610:45 pm
LIH
-
ONT
1 stop10h 31m
Delta
Deal found 7/10$349
This Delta deal was found by Cheapflights users on 7/7. 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 8/411:56 am
ONT
-
LIH
1 stop10h 20m
Delta
Wed 8/129:55 pm
LIH
-
ONT
1 stop10h 21m
Delta
Deal found 7/7$350
This Delta deal was found by Cheapflights users on 7/10. 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 11/511:56 am
ONT
-
LIH
1 stop10h 18m
Delta
Mon 11/1610:45 pm
LIH
-
ONT
1 stop10h 31m
Delta
Deal found 7/10$354
This Delta deal was found by Cheapflights users on 7/8. 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.
Wed 11/46:00 am
ONT
-
LIH
2 stops16h 14m
Delta
Mon 11/910:45 pm
LIH
-
ONT
2 stops15h 27m
Delta
Deal found 7/8$355
This Delta deal was found by Cheapflights users on 7/9. 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 11/511:56 am
ONT
-
LIH
1 stop10h 18m
Delta
Tue 11/1710:45 pm
LIH
-
ONT
1 stop10h 31m
Delta
Deal found 7/9$398
This American Airlines deal was found by Cheapflights users on 7/9. 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.
Sat 11/1412:55 pm
ONT
-
LIH
1 stop28h 59m
American Airlines
Wed 11/1810:44 pm
LIH
-
ONT
1 stop8h 11m
American Airlines
Deal found 7/9$403

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 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$335
(Southwest)

One-way from

$172
(Delta)

Popular in

December

Cheapest in

February

Average price

$563
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 ($16 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 12, 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

Wed 11/4

9:00 am-2:25 pm

1 stop7h 25m

Lihue

Wed 11/11

8:25 am-10:10 pm

1 stop11h 45m

$335

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 11/4

11:56 am-8:14 pm

1 stop10h 18m

Lihue

Mon 11/9

10:45 pm-11:16 am

1 stop10h 31m

$344

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 11/5

11:56 am-8:14 pm

1 stop10h 18m

Lihue

Tue 11/17

10:45 pm-11:16 am

1 stop10h 31m

$398
Quickest round-trip

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 12/16

9:00 am-2:25 pm

1 stop7h 25m

Lihue

Wed 12/23

11:50 am-10:45 pm

1 stop8h 55m

$405

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Sun 11/8

11:56 am-8:14 pm

1 stop10h 18m

Lihue

Thu 11/19

10:45 pm-11:16 am

1 stop10h 31m

$408

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 11/4

11:56 am-8:14 pm

1 stop10h 18m

Lihue

Wed 11/18

10:45 pm-11:16 am

1 stop10h 31m

$408

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 8/24

9:31 am-7:31 pm

1 stop13h 00m

Lihue

Thu 8/27

9:00 am-10:10 pm

1 stop10h 10m

$419

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 8/27

11:56 am-7:16 pm

1 stop10h 20m

Lihue

Tue 9/1

9:55 pm-11:16 am

1 stop10h 21m

$424

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 8/5

2:05 pm-9:25 pm

1 stop10h 20m

Lihue

Thu 8/20

9:00 am-10:10 pm

1 stop10h 10m

$430

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 8/31

11:56 am-7:16 pm

1 stop10h 20m

Lihue

Thu 9/10

9:54 pm-11:14 am

1 stop10h 20m

$434

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/11

Showing 1-10 of 23 resultsSorted by cheapest first
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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, May is the cheapest month in which you can book a flight from Ontario to Kaua'i (average of $258). Flying from Ontario to Kaua'i in July is currently the most expensive (average of $518). 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 12, 2026.
Get a feel of what it's like to fly with Alaska Airlines and Southwest 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
7.9
Good
12,654 reviews

Boarding

8.1

Food

7.1

Overall

7.9

Crew

8.5

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.
Alaska Airlines
7.9
Good
12,654 reviews
Alaska Airlines
7.9
Good
12,654 reviews

Boarding

8.1

Food

7.1

Overall

7.9

Crew

8.5

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.
Southwest
7.9
Good
4,251 reviews
Alaska Airlines
7.9
Good
12,654 reviews

Boarding

8.1

Food

7.1

Overall

7.9

Crew

8.5

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

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 16m. Your travel time can differ by up to 2h 09m. 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, May is the cheapest month in which you can book a flight from Ontario to Kaua'i (average of $258). Flying from Ontario to Kaua'i in July is currently the most expensive (average of $518). 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

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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 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$329Average$574FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$471Average$588FlexibilityNo cancel feeOn-time63%

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