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

$161 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Hawaiian Airlines and Alaska Airlines, with prices starting from $224 and $229, respectively.

What are the most popular airlines that fly from Ontario to Kaua'i?

Before booking your flight from Ontario to Kaua'i check out the most popular airlines for this route: American Airlines, Alaska Airlines or Delta.

How far in advance should I book a flight from Ontario to Kaua'i?

Users have found that booking a flight from Ontario to Kaua'i at least 26 days early can save you up to 27% on average compared to booking a flight this week. If booking 26 days before your flight isn’t an option for you, users have found flights from Ontario to Kaua'i for as little as $453 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $453 for flights departing within the next 3 days.

What is the cheapest month to fly from Ontario to Kaua'i?

Our data shows that September tends to be the cheapest month to fly to Kaua'i from Ontario. Users have commonly found prices around $434 for the month, but tickets can be as low as $153. Due to multiple factors, prepare for potentially higher prices in June.

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.

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.

$161+ Flights from Ontario to Kaua'i - Compare & Save Big

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

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.

Cheap flight deals from Ontario to Kaua'i

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$321 (Delta)
One-way from	$161 (Delta)
Popular in	June
Cheapest in	September
Average price	$464

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 ($81 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

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 April 29, 2025.

Mon 5/1911:44 amONT - LIH

1 stop10h 16mDelta

Wed 5/219:45 pmLIH - ONT

1 stop10h 19mDelta

Deal found 4/28

$321

Mon 11/39:50 amONT - LIH

1 stop9h 12mAlaska Airlines

Tue 11/410:10 pmLIH - ONT

1 stop10h 29mAlaska Airlines

Deal found 4/28

$415

Wed 8/276:00 amONT - LIH

1 stop8h 25mUnited Airlines

Sun 8/3111:10 pmLIH - ONT

1 stop10h 03mUnited Airlines

Deal found 4/28

$421

Wed 5/79:45 amONT - LIH

1 stop11h 26mHawaiian Airlines

Tue 5/1311:05 amLIH - ONT

1 stop7h 45mHawaiian Airlines

Deal found 4/28

$478

Fri 5/99:55 amONT - LIH

1 stop9h 05mSouthwest

Mon 5/129:00 amLIH - ONT

1 stop11h 00mSouthwest

Deal found 4/28

$495

Wed 6/117:02 pmONT - LIH

1 stop22h 14mAmerican Airlines

Wed 6/189:25 pmLIH - ONT

1 stop17h 47mAmerican Airlines

Deal found 4/28

$631

Best flights from Ontario to Kaua'i
Discover carefully curated flight deals from Ontario to Kaua'i that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 29, 2025.

Mon 5/1911:44 amONT - LIH

1 stop10h 16mDelta

Tue 5/209:45 pmLIH - ONT

1 stop13h 30mDelta

Deal found 4/28

$321

Wed 6/41:36 pmONT - LIH

1 stop9h 19mUnited Airlines

Sun 6/810:58 pmLIH - ONT

1 stop10h 16mUnited Airlines

Deal found 4/28

$446

Sat 5/311:46 amONT - LIH

1 stop12h 46mAlaska Airlines

Wed 5/710:32 pmLIH - ONT

1 stop9h 19mAlaska Airlines

Deal found 4/27

$447

Wed 5/79:45 amONT - LIH

1 stop11h 26mHawaiian Airlines

Tue 5/1311:05 amLIH - ONT

1 stop7h 45mHawaiian Airlines

Deal found 4/28

$478

Fri 5/99:55 amONT - LIH

1 stop9h 05mSouthwest

Mon 5/129:00 amLIH - ONT

1 stop11h 00mSouthwest

Deal found 4/28

$495

Wed 6/117:02 pmONT - LIH

1 stop22h 14mAmerican Airlines

Wed 6/189:25 pmLIH - ONT

1 stop17h 47mAmerican Airlines

Deal found 4/28

$631

Last-minute flights from Ontario to Kaua'i
Discover last-minute flight deals from Ontario to Kaua'i. Data last updated April 29, 2025 and is based on user searches.

Fri 5/29:55 amONT - LIH

1 stop9h 05mSouthwest

Mon 5/56:15 amLIH - ONT

2 stops9h 35mSouthwest

Deal found 4/27

$492

Fri 5/26:15 amONT - LIH

1 stop11h 43mAmerican Airlines

Fri 5/99:40 pmLIH - ONT

1 stop8h 21mAmerican Airlines

Deal found 4/27

$497

Sat 5/311:46 amONT - LIH

1 stop12h 46mAlaska Airlines

Wed 5/710:32 pmLIH - ONT

1 stop9h 19mAlaska Airlines

Deal found 4/27

$447

Wed 5/79:45 amONT - LIH

1 stop11h 26mHawaiian Airlines

Tue 5/1311:05 amLIH - ONT

1 stop7h 45mHawaiian Airlines

Deal found 4/28

$478

Wed 5/76:00 amONT - LIH

1 stop8h 47mUnited Airlines

Sat 5/106:39 pmLIH - ONT

2 stops20h 22mUnited Airlines

Deal found 4/27

$670

Wed 5/76:00 amONT - LIH

1 stop8h 47mMultiple Airlines

Fri 5/167:40 amLIH - ONT

1 stop11h 15mMultiple Airlines

Deal found 4/27

$2,639

Fri 5/99:45 amONT - LIH

1 stop9h 57mAlaska Airlines

Mon 5/1210:32 pmLIH - ONT

1 stop9h 19mAlaska Airlines

Deal found 4/28

$483

Thu 5/291:36 pmONT - LIH

1 stop9h 19mUnited Airlines

Tue 6/310:58 pmLIH - ONT

1 stop10h 16mUnited Airlines

Deal found 4/27

$503

Fri 5/3011:44 amONT - LIH

1 stop10h 16mDelta

Wed 6/49:45 pmLIH - ONT

1 stop13h 30mDelta

Deal found 4/27

$362

One-way flights from Ontario to Kaua'i
Search for one-way flight options from Ontario to Kaua'i. Find affordable one-way fares based on user searches. Data last updated April 29, 2025.

Mon 5/1911:44 amONT - LIH

1 stop10h 16mDelta

Deal found 4/28

$161

Tue 5/279:50 amONT - LIH

1 stop11h 21mHawaiian Airlines

Deal found 4/28

$224

Sat 5/311:46 amONT - LIH

1 stop12h 46mAlaska Airlines

Deal found 4/28

$229

Sat 7/51:19 pmONT - LIH

1 stop9h 19mUnited Airlines

Deal found 4/27

$252

Wed 6/187:02 pmONT - LIH

1 stop22h 14mAmerican Airlines

Deal found 4/27

$406

Wed 6/1810:55 amONT - LIH

2 stops10h 05mSouthwest

Deal found 4/27

$407

Tue 6/36:00 amONT - LIH

3 stops18h 33mMultiple Airlines

Deal found 4/28

$614

Cheapflights Fare Finder

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

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Fri 5/30

11:44 am-7:00 pm

1 stop10h 16m

Lihue

Wed 6/4

9:45 pm-2:15 pm

1 stop13h 30m

$362

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Wed 6/4

1:36 pm-7:55 pm

1 stop9h 19m

Lihue

Sun 6/8

10:58 pm-12:14 pm

1 stop10h 16m

$438

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Fri 5/9

9:45 am-4:42 pm

1 stop9h 57m

Lihue

Mon 5/12

10:32 pm-10:51 am

1 stop9h 19m

$483

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Fri 5/9

9:45 am-4:13 pm

1 stop9h 28m

Lihue

Tue 5/13

11:33 am-9:50 pm

1 stop7h 17m

$490

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Fri 5/2

9:55 am-4:00 pm

1 stop9h 05m

Lihue

Mon 5/5

6:15 am-6:50 pm

2 stops9h 35m

$492

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Fri 5/2

6:15 am-2:58 pm

1 stop11h 43m

Lihue

Fri 5/9

9:40 pm-9:01 am

1 stop8h 21m

$497

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Mon 5/19

11:44 am-7:00 pm

1 stop10h 16m

$161

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 6/3

7:20 pm-11:46 am

1 stop19h 26m

$201

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Tue 5/27

9:50 am-6:11 pm

1 stop11h 21m

$224

OntarioLihue

ONT - LIH

ONTLIH

Ontario

Thu 5/29

1:36 pm-7:55 pm

1 stop9h 19m

$252

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 13 results

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 $440). Flying from Ontario to Kaua'i in June is currently the most expensive (average of $683). 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.

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

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

Rainfall in Kaua'i by month

In terms of precipitation, rainfall in Kaua'i ranges from 2.2 - 6.7 inches per month. January is typically the wettest month, when rainfall can reach 6.7 in. June is typically the driest time to visit Kaua'i when rainfall is around 2.2 in.

Temperature in Kaua'i by month

If weather is an important factor for your trip to Kaua'i, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 69.8 F).

Reviews of airlines servicing Kaua'i

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines

8.0

Very good

9,961 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Southwest

8.0

Very good

4,292 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta

8.0

Very good

7,929 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Hawaiian Airlines

7.9

Good

2,402 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines

7.4

Good

8,696 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

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.
What are the cheapest airlines to fly from Ontario to Kaua'i one-way?
$161 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Hawaiian Airlines and Alaska Airlines, with prices starting from $224 and $229, respectively.
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 $440). Flying from Ontario to Kaua'i in June is currently the most expensive (average of $683). 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

Alternative routes for Ontario to Kaua'i

Los Angeles to Honolulu flights

San Francisco to Honolulu flights

Los Angeles to Kahului flights

Los Angeles to Lihue flights

Ontario to Honolulu flights

San Diego to Honolulu flights

San Francisco to Kahului flights

Los Angeles to Kailua-Kona flights

San Jose to Honolulu flights

San Francisco to Kailua-Kona flights

Las Vegas to Honolulu flights

San Francisco to Lihue flights

Sacramento to Honolulu flights

Oakland to Honolulu flights

Long Beach to Honolulu flights

San Diego to Kahului flights

San Jose to Kahului flights

San Diego to Lihue flights

Sacramento to Kahului flights

Ontario to Kahului flights

Oakland to Kahului flights

San Diego to Kailua-Kona flights

Las Vegas to Kahului flights

San Jose to Lihue flights

Long Beach to Kahului flights

Oakland to Lihue flights

Sacramento to Kailua-Kona flights

Ontario to Lihue flights

Santa Ana to Honolulu flights

Ontario to Kailua-Kona flights

Sacramento to Lihue flights

Fresno to Honolulu flights

Las Vegas to Kailua-Kona flights

San Jose to Kailua-Kona flights

Burbank to Honolulu flights

Oakland to Kailua-Kona flights

Santa Ana to Kahului flights

Reno to Honolulu flights

Los Angeles to Hilo flights

Burbank to Kahului flights

San Francisco to Hilo flights

Santa Ana to Kailua-Kona flights

Las Vegas to Lihue flights

Santa Ana to Lihue flights

Palm Springs to Honolulu flights

San Luis Obispo to Honolulu flights

Long Beach to Lihue flights

Medford to Honolulu flights

Ontario to Hilo flights

Fresno to Lihue flights

Top 6 airlines flying from Ontario to Kaua'i

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$177	Average$368	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$289	Average$381	FlexibilityNo cancel fee	On-timeN/A
Hawaiian Airlines	Cheapest$298	Average$541	FlexibilityNo cancel fee	On-time85%
Southwest	Cheapest$362	Average$603	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$363	Average$584	FlexibilityNo cancel fee	On-time69%
Alaska Airlines	Cheapest$428	Average$677	FlexibilityNo cancel fee	On-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.

$161+ 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 5/19. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Kaua'i with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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 April 29, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Kaua'i

Cheapest flights from Ontario to Kaua'iExplore 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 April 29, 2025.

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 April 29, 2025.

Cheapflights Fare Finder

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

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.

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?

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

Find hourly flight availability from Ontario to Kaua'i. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2025.

Rainfall in Kaua'i by month

Plan your trip to Kaua'i by taking into account the average rainfall totals by month.

Temperature in Kaua'i by month

Plan your trip to Kaua'i by taking into account the average temperature totals by month.

Reviews of airlines servicing Kaua'i

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?

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

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

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

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

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

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.

Top 6 airlines flying from Ontario to Kaua'i

100% Free

Book with Flexibility

Travel Smart

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 April 29, 2025.