HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Kaua'i

$128+ Cheap flights from Portland (PDX) 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 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LIH
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland 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 Portland to Kaua'i

Cheapest flights from Portland to Kaua'i
Explore the most affordable flight options available from Portland to Kaua'i. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This American Airlines deal was found by Cheapflights users on 1/27. 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 4/146:00 am
PDX
-
LIH
1 stop9h 22m
American Airlines
Thu 4/239:30 pm
LIH
-
PDX
1 stop23h 03m
American Airlines
Deal found 1/27$336
This United Airlines deal was found by Cheapflights users on 1/26. 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.
Thu 2/193:50 pm
PDX
-
LIH
1 stop8h 54m
United Airlines
Mon 2/2311:59 pm
LIH
-
PDX
1 stop10h 39m
United Airlines
Deal found 1/26$338
This United Airlines deal was found by Cheapflights users on 1/28. 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.
Sat 2/281:40 pm
PDX
-
LIH
1 stop11h 04m
United Airlines
Fri 3/612:12 am
LIH
-
PDX
1 stop10h 21m
United Airlines
Deal found 1/28$341
This United Airlines deal was found by Cheapflights users on 1/26. 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.
Mon 3/23:50 pm
PDX
-
LIH
1 stop8h 54m
United Airlines
Fri 3/612:12 am
LIH
-
PDX
1 stop10h 21m
United Airlines
Deal found 1/26$343
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/45:35 pm
PDX
-
LIH
1 stop19h 11m
Multiple Airlines
Mon 3/93:50 pm
LIH
-
PDX
1 stop14h 52m
Multiple Airlines
Deal found 1/28$345
This United Airlines deal was found by Cheapflights users on 1/28. 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 5/105:30 am
PDX
-
LIH
1 stop8h 59m
United Airlines
Mon 5/181:03 pm
LIH
-
PDX
1 stop8h 56m
United Airlines
Deal found 1/28$348
This United Airlines deal was found by Cheapflights users on 1/28. 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.
Thu 4/91:39 pm
PDX
-
LIH
1 stop9h 14m
United Airlines
Thu 4/2311:00 pm
LIH
-
PDX
1 stop10h 26m
United Airlines
Deal found 1/28$349
This United Airlines deal was found by Cheapflights users on 1/28. 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.
Fri 2/271:40 pm
PDX
-
LIH
1 stop11h 04m
United Airlines
Thu 3/512:12 am
LIH
-
PDX
1 stop10h 21m
United Airlines
Deal found 1/28$354
This Alaska Airlines deal was found by Cheapflights users on 1/28. 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.
Sun 3/19:48 pm
PDX
-
LIH
1 stop15h 01m
Alaska Airlines
Mon 3/93:50 pm
LIH
-
PDX
1 stop14h 52m
Alaska Airlines
Deal found 1/28$355
This United Airlines deal was found by Cheapflights users on 1/28. 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.
Thu 2/261:40 pm
PDX
-
LIH
1 stop11h 04m
United Airlines
Thu 3/52:25 pm
LIH
-
PDX
1 stop8h 10m
United Airlines
Deal found 1/28$356
This Kiwi.com deal was found by Cheapflights users on 1/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/75:30 pm
PDX
-
LIH
1 stop7h 51m
Multiple Airlines
Mon 5/111:47 pm
LIH
-
PDX
1 stop18h 27m
Multiple Airlines
Deal found 1/29$361
This Southwest deal was found by Cheapflights users on 1/29. 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 3/39:55 am
PDX
-
LIH
1 stop8h 30m
Southwest
Sat 3/77:15 am
LIH
-
PDX
2 stops10h 50m
Southwest
Deal found 1/29$362

Find flight deals from Portland to Kaua'i

Keep the following information in mind while searching for Portland to Kaua'i flight deals. Data was last updated January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$336
(American Airlines)

One-way from

$128
(United Airlines)

Popular in

June

Cheapest in

September

Average price

$447

Good round-trip deal

$416 or less

Good one-way deal

$224 or less
Provider with most accurate pricing for Portland-Lihue flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Lihue flights.
Search Deals
From Portland to Kaua'i
Search Deals
One-way flight from Portland to Kaua'i
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($80 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Portland to Kaua'i.
Search Deals
Price to beat on a one-way flight from Portland to Kaua'i.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland 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 January 29, 2026.
Use the filters below to find and compare flights from Portland to Kaua'i that are best for you.

Fly from

Portland

Fly to

Kaua'i

Route

Depart

Return

Price

PortlandLihue

PDX - LIH

PDXLIH

Portland

Tue 4/14

7:05 am-9:45 am

1 stop29h 40m

Lihue

Wed 4/22

1:14 pm-5:42 am

1 stop13h 28m

$365

PortlandLihue

PDX - LIH

PDXLIH

Portland

Tue 3/3

7:00 am-11:27 am

Nonstop6h 27m

Lihue

Mon 3/9

3:50 pm-9:42 am

1 stop14h 52m

$377

PortlandLihue

PDX - LIH

PDXLIH

Portland

Tue 4/14

7:05 am-9:45 am

1 stop29h 40m

Lihue

Wed 4/22

12:11 pm-8:45 pm

Nonstop5h 34m

$379

PortlandLihue

PDX - LIH

PDXLIH

Portland

Tue 3/3

3:52 pm-12:47 pm

2 stops22h 55m

Lihue

Wed 3/4

9:00 pm-10:56 am

2 stops11h 56m

$402

PortlandLihue

PDX - LIH

PDXLIH

Portland

Sun 4/26

7:00 am-10:56 am

1 stop30h 56m

Lihue

Sun 5/3

4:20 pm-8:48 pm

1 stop25h 28m

$405

PortlandLihue

PDX - LIH

PDXLIH

Portland

Wed 4/15

1:35 pm-8:30 pm

2 stops9h 55m

Lihue

Thu 5/21

10:26 pm-9:32 am

1 stop8h 06m

$422

PortlandLihue

PDX - LIH

PDXLIH

Portland

Sun 5/10

7:00 am-9:44 am

1 stop29h 44m

Lihue

Sun 5/17

3:39 pm-9:50 am

1 stop15h 11m

$425

PortlandLihue

PDX - LIH

PDXLIH

Portland

Tue 4/14

7:05 am-6:40 pm

2 stops14h 35m

Lihue

Wed 4/22

8:20 pm-8:25 am

1 stop9h 05m

$428

PortlandLihue

PDX - LIH

PDXLIH

Portland

Thu 2/19

3:50 pm-10:44 pm

1 stop8h 54m

$128

PortlandLihue

PDX - LIH

PDXLIH

Portland

Thu 3/5

1:30 pm-10:57 pm

1 stop11h 27m

$128

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 17 results
1
2

Best time to book a flight from Portland to Kaua'i

Have a flexible travel schedule? Discover the best time to fly to Kaua'i from Portland 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 Portland to Kaua'i

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

Currently, April is the cheapest month in which you can book a flight from Portland to Kaua'i (average of $240). Flying from Portland to Kaua'i in July is currently the most expensive (average of $368). 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 PDX to FUS?

Find hourly flight availability from Portland 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 January 29, 2026.

When flying from Portland 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.

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 January 29, 2026.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Portland 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
8.0
Very good
11,807 reviews

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,807 reviews
Alaska Airlines
8.0
Very good
11,807 reviews

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Southwest
8.0
Very good
4,267 reviews
Alaska Airlines
8.0
Very good
11,807 reviews

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Delta
7.9
Good
8,128 reviews
Alaska Airlines
8.0
Very good
11,807 reviews

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Hawaiian Airlines
7.8
Good
2,830 reviews
Alaska Airlines
8.0
Very good
11,807 reviews

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
United Airlines
7.4
Good
9,215 reviews
Alaska Airlines
8.0
Very good
11,807 reviews

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

Related info for your journey

Find useful and relevant information for your journey from Portland 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 Portland to Kaua'i?

    Located just 6.0 mi from the city center, Portland (PDX) is the airport most travelers will use when flying to Kaua'i from Portland.

  • How popular is this Portland to Kaua'i flight route?

    The Portland to Kaua'i flight path was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Portland to Kaua'i?

    A quick flight from Portland to Kaua'i can take about 6h 27m. Alaska Airlines provides one of the quickest options available for as low as $377. The distance between Portland and Kaua'i is about 2628 mi. All flights are typically nonstop.

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

    The cheapest airlines for a one-way flight from Portland to Kaua'i are United Airlines ($115), American Airlines ($128), and Southwest ($128).

  • What are the cheapest flights from Portland to Kaua'i?

    Looking at all options, your cheapest flight can be booked for $206. While the most popular route (Portland - Lihue) can be booked for $256 on average, our data indicates $523 when flying from Portland to Kaua'i.

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

    Yes. In addition to deals on Portland to Kaua'i flights, Cheapflights offers vacation packages that include both flights and hotel.

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

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Kaua'i.

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

    Yes. Cheapflights offers flight deals from Portland 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 Portland to Kaua'i?

    Currently, April is the cheapest month in which you can book a flight from Portland to Kaua'i (average of $240). Flying from Portland to Kaua'i in July is currently the most expensive (average of $368). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Kaua'i

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Honolulu flights
Portland to Kahului flights
Portland to Kailua-Kona flights
Portland to Lihue flights
Boise to Honolulu flights
Boise to Kahului flights
Boise to Lihue flights
Eugene to Honolulu flights
Redmond to Kahului flights
Boise to Kailua-Kona flights
Eugene to Kahului flights
Eugene to Kailua-Kona flights
Medford to Lihue flights
Redmond to Honolulu flights
Medford to Honolulu flights
Portland to Hilo flights
Medford to Kahului flights
Medford to Kailua-Kona flights
Redmond to Kailua-Kona flights
Redmond to Lihue flights
Eugene to Lihue flights
Boise to Hilo flights
Yakima to Honolulu flights
Portland to Kapalua flights
Eugene to Hilo flights
Boise to Kapalua flights
Portland to Waimea (Big Island) flights
Yakima to Lihue flights
Portland to Hana flights
Medford to Hilo flights
Eugene to Kapalua flights
Medford to Kapalua flights
Boise to Hana flights
Portland to Lanai City flights
Portland to Hoolehua flights
Pendleton to Honolulu flights
North Bend to Kahului flights
Redmond to Kapalua flights

Top 6 airlines flying from Portland to Kaua'i

Discover the top 6 airlines that operate flights from Portland 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$200Average$391FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$217Average$463FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$256Average$543FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$273Average$461FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$284Average$610FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$339Average$595FlexibilityNo cancel feeOn-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.