How long is the flight from Kaua'i to Ontario?

For as low as $319, Alaska Airlines can have you in Ontario from Kaua'i in 10h 39m. Airlines will cover a distance of 2657 mi.

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 $170. Southwest flights start at $191 while deals on United Airlines start at $218 one-way.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

What is the cheapest time of day to fly from FUS to ONT?

When flying from Kaua'i to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

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.

$183+ Flights from Kaua'i to Ontario

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Cheap 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 December 18, 2025.

Tue 12/2311:59 pmLIH - ONT

1 stop8h 02mUnited Airlines

Thu 1/86:00 amONT - LIH

1 stop8h 54mUnited Airlines

Deal found 12/16

$565

Mon 12/2211:59 pmLIH - ONT

1 stop8h 02mUnited Airlines

Thu 1/86:00 amONT - LIH

1 stop8h 54mUnited Airlines

Deal found 12/16

$567

Sun 12/2111:59 pmLIH - ONT

1 stop8h 02mUnited Airlines

Thu 1/86:00 amONT - LIH

1 stop8h 54mUnited Airlines

Deal found 12/16

$570

Wed 12/2411:59 pmLIH - ONT

1 stop15h 52mUnited Airlines

Thu 1/86:00 amONT - LIH

1 stop8h 54mUnited Airlines

Deal found 12/16

$625

Fri 12/1911:59 pmLIH - ONT

1 stop8h 00mUnited Airlines

Sun 12/216:00 amONT - LIH

1 stop10h 48mUnited Airlines

Deal found 12/17

$703

Sat 12/2011:59 amLIH - ONT

1 stop10h 00mAlaska Airlines

Mon 12/2210:44 amONT - LIH

1 stop13h 39mAlaska Airlines

Deal found 12/16

$1,117

Best flights from Kaua'i to Ontario
Discover carefully curated flight deals from Kaua'i to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

Thu 1/2210:20 pmLIH - ONT

1 stop10h 39mAlaska Airlines

Mon 1/266:00 amONT - LIH

1 stop18h 41mAlaska Airlines

Deal found 12/15

$319

Thu 1/226:00 amLIH - ONT

2 stops15h 56mMultiple Airlines

Mon 1/266:00 amONT - LIH

1 stop18h 41mMultiple Airlines

Deal found 12/15

$354

Mon 1/121:00 pmLIH - ONT

1 stop7h 28mHawaiian Airlines

Mon 1/198:13 amONT - LIH

1 stop10h 09mHawaiian Airlines

Deal found 12/16

$415

Sat 1/3110:22 amLIH - ONT

1 stop10h 06mMultiple Airlines

Mon 2/238:41 amONT - LIH

1 stop8h 40mMultiple Airlines

Deal found 12/15

$386

Wed 5/610:25 pmLIH - ONT

1 stop9h 28mMultiple Airlines

Mon 5/118:45 amONT - LIH

1 stop10h 33mMultiple Airlines

Deal found 12/17

$432

Sun 1/1110:20 pmLIH - ONT

1 stop10h 39mMultiple Airlines

Tue 1/138:13 amONT - LIH

1 stop10h 41mMultiple Airlines

Deal found 12/17

$477

Fri 4/176:00 amLIH - ONT

1 stop12h 55mMultiple Airlines

Sun 4/268:45 amONT - LIH

1 stop8h 15mMultiple Airlines

Deal found 12/17

$564

Last-minute flights from Kaua'i to Ontario
Discover last-minute flight deals from Kaua'i to Ontario. Data last updated December 18, 2025 and is based on user searches.

Sun 12/2111:59 pmLIH - ONT

1 stop8h 02mUnited Airlines

Thu 1/86:00 amONT - LIH

1 stop8h 54mUnited Airlines

Deal found 12/16

$570

Mon 12/2211:59 pmLIH - ONT

1 stop8h 02mUnited Airlines

Thu 1/86:00 amONT - LIH

1 stop8h 54mUnited Airlines

Deal found 12/16

$567

Tue 12/2311:59 pmLIH - ONT

1 stop8h 02mUnited Airlines

Thu 1/86:00 amONT - LIH

1 stop8h 54mUnited Airlines

Deal found 12/16

$565

Wed 12/2411:59 pmLIH - ONT

1 stop15h 52mUnited Airlines

Thu 1/86:00 amONT - LIH

1 stop8h 54mUnited Airlines

Deal found 12/16

$625

Sun 1/1110:20 pmLIH - ONT

1 stop10h 39mMultiple Airlines

Tue 1/138:13 amONT - LIH

1 stop10h 41mMultiple Airlines

Deal found 12/17

$477

Mon 1/121:00 pmLIH - ONT

1 stop7h 28mHawaiian Airlines

Mon 1/198:13 amONT - LIH

1 stop10h 09mHawaiian Airlines

Deal found 12/16

$415

Thu 1/2210:20 pmLIH - ONT

1 stop10h 39mAlaska Airlines

Mon 1/266:00 amONT - LIH

1 stop18h 41mAlaska Airlines

Deal found 12/16

$319

Thu 1/2211:00 amLIH - ONT

2 stops21h 59mMultiple Airlines

Mon 1/266:00 amONT - LIH

1 stop18h 41mMultiple Airlines

Deal found 12/16

$354

Sat 1/3110:22 amLIH - ONT

1 stop10h 06mMultiple Airlines

Mon 2/238:41 amONT - LIH

1 stop8h 40mMultiple Airlines

Deal found 12/15

$386

Sat 1/319:31 pmLIH - ONT

2 stops16h 44mDelta

Mon 2/236:00 amONT - LIH

2 stops14h 31mDelta

Deal found 12/15

$574

One-way flights from Kaua'i to Ontario
Search for one-way flight options from Kaua'i to Ontario. Find affordable one-way fares based on user searches. Data last updated December 18, 2025.

Thu 1/151:00 pmLIH - ONT

1 stop7h 28mMultiple Airlines

Deal found 12/16

$183

Tue 4/2810:25 pmLIH - ONT

1 stop9h 28mAlaska Airlines

Deal found 12/17

$188

Mon 1/2611:00 amLIH - ONT

1 stop9h 28mMultiple Airlines

Deal found 12/16

$193

Mon 2/91:00 pmLIH - ONT

1 stop7h 28mMultiple Airlines

Deal found 12/15

$194

Tue 1/1310:20 pmLIH - ONT

1 stop20h 16mAlaska Airlines

Deal found 12/15

$198

Tue 4/710:25 pmLIH - ONT

1 stop9h 28mAlaska Airlines

Deal found 12/16

$199

Sun 1/2512:11 pmLIH - ONT

1 stop8h 17mMultiple Airlines

Deal found 12/16

$203

Fri 2/1310:27 amLIH - ONT

1 stop9h 48mMultiple Airlines

Deal found 12/16

$204

Mon 3/1610:19 pmLIH - ONT

1 stop21h 25mAlaska Airlines

Deal found 12/16

$208

Fri 5/810:25 pmLIH - ONT

1 stop9h 28mAlaska Airlines

Deal found 12/15

$209

Sat 2/1412:49 pmLIH - ONT

1 stop7h 26mMultiple Airlines

Deal found 12/16

$223

Sat 1/2410:22 amLIH - ONT

1 stop10h 06mMultiple Airlines

Deal found 12/16

$224

Find flight deals from Kaua'i to Ontario

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$319 (Alaska Airlines)
One-way from	$183 (Alaska Airlines)
Popular in	June
Cheapest in	February
Average price	$386

Provider with most accurate pricing for Lihue-Los Angeles flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lihue-Los Angeles flights.

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From Kaua'i to Ontario

Search Deals

One-way flight from Kaua'i to Ontario

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($42 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 December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

LihueOntario

LIH - ONT

LIHONT

Lihue

Thu 1/22

10:20 pm-10:59 am

1 stop10h 39m

Ontario

Mon 1/26

6:00 am-10:41 pm

1 stop18h 41m

$319

LihueOntario

LIH - ONT

LIHONT

Lihue

Thu 1/22

6:00 am-11:56 pm

2 stops15h 56m

Ontario

Mon 1/26

6:00 am-10:41 pm

1 stop18h 41m

$354

LihueOntario

LIH - ONT

LIHONT

Lihue

Sat 1/31

10:22 am-10:28 pm

1 stop10h 06m

Ontario

Mon 2/23

8:41 am-3:21 pm

1 stop8h 40m

$386

LihueOntario

LIH - ONT

LIHONT

Lihue

Mon 1/12

1:00 pm-10:28 pm

1 stop7h 28m

Ontario

Mon 1/19

8:13 am-4:22 pm

1 stop10h 09m

$415

LihueOntario

LIH - ONT

LIHONT

Lihue

Wed 5/6

10:25 pm-10:53 am

1 stop9h 28m

Ontario

Mon 5/11

8:45 am-4:18 pm

1 stop10h 33m

$432

LihueOntario

LIH - ONT

LIHONT

Lihue

Sun 1/11

10:20 pm-10:59 am

1 stop10h 39m

Ontario

Tue 1/13

8:13 am-4:54 pm

1 stop10h 41m

$477

LihueOntario

LIH - ONT

LIHONT

Lihue

Fri 4/17

6:00 am-9:55 pm

1 stop12h 55m

Ontario

Sun 4/26

8:45 am-2:00 pm

1 stop8h 15m

$564

LihueOntario

LIH - ONT

LIHONT

Lihue

Thu 1/15

1:00 pm-10:28 pm

1 stop7h 28m

$183

LihueOntario

LIH - ONT

LIHONT

Lihue

Tue 2/24

10:27 am-10:15 pm

1 stop9h 48m

$183

LihueOntario

LIH - ONT

LIHONT

Lihue

Wed 5/6

10:25 pm-10:53 am

1 stop9h 28m

$188

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 18 results

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

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

7.9

Good

4,250 reviews

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

7.9

Good

4,250 reviews

Southwest

7.9

Good

4,250 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Related info for your journey

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 $319, Alaska Airlines can have you in Ontario from Kaua'i in 10h 39m. Airlines will cover a distance of 2657 mi.
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 $170. Southwest flights start at $191 while deals on United Airlines start at $218 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, 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

Top airline flying from Kaua'i to Ontario

Airline	Cheapest	Average	Flexibility	On-time
Southwest	Cheapest$321	Average$517	FlexibilityNo cancel fee	On-time63%

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$183+ 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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Kaua'i to Ontario with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Kaua'i to Ontario

Cheapest flights from Kaua'i to OntarioExplore 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 December 18, 2025.

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 December 18, 2025.

Find 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 December 18, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Kaua'i to Ontario that are best for you.

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.

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?

Reviews of airlines servicing Ontario

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.

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?

How long is the flight from Kaua'i to Ontario?

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

Can I find deals for flights from Kaua'i to Ontario that include hotel bookings?

How can I find direct flights from Kaua'i to Ontario?

Can I find deals for business class flights from Kaua'i to Ontario?

What is the cheapest month to book a flight from Kaua'i to Ontario?

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

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Top airline flying from Kaua'i to Ontario

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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 December 18, 2025.