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Ontario

$160+ 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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
LIH — ONT
Aug 6 — Aug 131
Wed 8/6
Wed 8/13
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 August 1, 2025.

Round-trip from

$319
(Delta)

One-way from

$160
(Alaska Airlines)

Popular in

July

Cheapest in

October

Average price

$453
From Kaua'i to Ontario
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One-way flight from Kaua'i to Ontario
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Highest demand for flights based on searches. 19% potential increase in price ($100 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 August 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 August 1, 2025.

This Delta deal was found by Cheapflights users on 7/30. 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.
Thu 9/49:40 pmLIH - ONT
1 stop10h 10mDelta
Sun 9/711:40 amONT - LIH
1 stop10h 23mDelta
Deal found 7/30$319
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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 9/1710:30 pmLIH - ONT
1 stop9h 14mAlaska Airlines
Mon 9/2911:39 amONT - LIH
1 stop12h 51mAlaska Airlines
Deal found 7/31$359
This United Airlines deal was found by Cheapflights users on 7/30. 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.
Sun 8/2411:10 pmLIH - ONT
1 stop10h 03mUnited Airlines
Wed 9/36:00 amONT - LIH
1 stop8h 25mUnited Airlines
Deal found 7/30$419
This American Airlines deal was found by Cheapflights users on 7/30. 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.
Tue 8/199:16 pmLIH - ONT
1 stop11h 16mAmerican Airlines
Fri 8/297:02 pmONT - LIH
1 stop21h 54mAmerican Airlines
Deal found 7/30$562
This Southwest deal was found by Cheapflights users on 7/30. 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.
Tue 8/198:40 pmLIH - ONT
2 stops10h 40mSouthwest
Fri 8/299:55 amONT - LIH
1 stop9h 05mSouthwest
Deal found 7/30$595

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 August 1, 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 9/4

9:40 pm-10:50 am

1 stop10h 10m

Ontario

Mon 9/8

12:00 pm-7:03 pm

1 stop10h 03m

$319

LihueOntario

LIH - ONT

LIHONT

Lihue

Wed 9/17

10:30 pm-10:44 am

1 stop9h 14m

Ontario

Mon 9/29

11:39 am-9:30 pm

1 stop12h 51m

$359

LihueOntario

LIH - ONT

LIHONT

Lihue

Sun 8/24

11:10 pm-12:13 pm

1 stop10h 03m

Ontario

Wed 9/3

6:00 am-11:25 am

1 stop8h 25m

$419

LihueOntario

LIH - ONT

LIHONT

Lihue

Tue 8/19

9:16 pm-11:32 am

1 stop11h 16m

Ontario

Fri 8/29

7:02 pm-1:56 pm

1 stop21h 54m

$562

LihueOntario

LIH - ONT

LIHONT

Lihue

Tue 8/19

8:40 pm-10:20 am

2 stops10h 40m

Ontario

Fri 8/29

9:55 am-4:00 pm

1 stop9h 05m

$595

LihueOntario

LIH - ONT

LIHONT

Lihue

Mon 9/22

10:30 pm-10:44 am

1 stop9h 14m

$160

LihueOntario

LIH - ONT

LIHONT

Lihue

Mon 10/13

9:40 pm-11:08 am

1 stop10h 28m

$192

LihueOntario

LIH - ONT

LIHONT

Lihue

Mon 10/20

10:58 pm-12:13 pm

1 stop10h 15m

$210

LihueOntario

LIH - ONT

LIHONT

Lihue

Mon 10/13

8:40 pm-11:15 am

2 stops11h 35m

$247

LihueOntario

LIH - ONT

LIHONT

Lihue

Wed 12/31

10:17 pm-8:37 am

1 stop8h 20m

$252

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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 $328). 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 August 1, 2025.
Read through reviews of airlines operating flights from Kaua'i to Ontario, such as Alaska Airlines, Southwest, and Delta. 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • What are the cheapest airlines to fly from Kaua'i to Ontario one-way?

    To fly one-way, consider booking your trip with Alaska Airlines, which is currently one of the cheapest options available, starting at $160. Delta flights start at $192 while deals on United Airlines start at $210 one-way.

  • 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 $328). 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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