What is the cheapest airline that flies from Portland to Kaua'i?

United Airlines and Delta are the most popular carriers operating from Portland to Kaua'i

What airlines fly to Kaua'i?

Alaska Airlines, Delta and Hawaiian Airlines are the top three most popular airlines that fly to Kaua'i from Portland according to our data. Alaska Airlines is the first choice among our users, with 60% of people opting to fly with this airline when traveling to Kaua'i. Keep in mind that there are 6 different airlines that fly to Kaua'i on a routine basis, so you have a few additional options to choose from.

How many flights depart from Portland to Kaua'i on average per day?

The number of flights available between Portland and Kaua'i is 2 per day as of March 2026. The most frequent departure time is 7:00AM, with 100% of daily flights leaving at noon.

How many flights depart from Portland to Kaua'i on average per week?

The number of flights available between Portland and Kaua'i is 15 per week as of March 2026. The most frequent departure day is Sun, with 27% of weekly flights leaving on this day.

When did momondo last update prices for flights from Portland Airport to Kaua'i?

Prices for flights from Portland Airport to Kaua'i are updated daily.

How many operators does momondo search for flights from Portland Airport to Kaua'i?

There are 6 operators available for flights from Portland Airport to Kaua'i as of March 2026.

How old do you have to be to fly from Portland Airport to Kaua'i?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Kaua'i.

What documentation or ID do you need to fly to Kaua'i?

The required travel and health documents for your Kaua'i trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Kaua'i. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$138 Cheap Flights from Portland to Kaua'i in 2026

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Find the cheapest flights from Portland to Kaua'i

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 4:10 pm

PDX

LIH

13h 10m

1 stop

8:20 am - 10:40 pm

LIH

PDX

11h 20m

2 stops

$352Southwest

lun., avr. 27 - lun., mai 4

6:00 am - 12:22 pm

PDX

LIH

9h 22m

1 stop

9:30 pm - 10:20 am

LIH

PDX

9h 50m

1 stop

$366American Airlines

dim., mai 10 - dim., mai 17

6:00 am - 12:22 pm

PDX

LIH

9h 22m

1 stop

9:30 pm - 11:03 pm

LIH

PDX

22h 33m

1 stop

$367American Airlines

mar., mai 5 - ven., mai 8

7:00 am - 4:10 pm

PDX

LIH

12h 10m

1 stop

8:10 pm - 10:45 am

LIH

PDX

11h 35m

2 stops

$372Southwest

mer., avr. 22 - mer., avr. 29

10:45 am - 4:10 pm

PDX

LIH

8h 25m

1 stop

9:10 pm - 9:05 am

LIH

PDX

8h 55m

1 stop

$376Southwest

jeu., avr. 30 - lun., mai 4

9:07 pm - 9:46 am

PDX

LIH

15h 39m

1 stop

1:46 pm - 11:17 am

LIH

PDX

18h 31m

1 stop

$380Multiple Airlines

lun., mai 11 - lun., mai 18

6:00 am - 12:22 pm

PDX

LIH

9h 22m

1 stop

9:30 pm - 10:18 am

LIH

PDX

9h 48m

1 stop

$381American Airlines

jeu., avr. 23 - lun., avr. 27

6:00 am - 12:22 pm

PDX

LIH

9h 22m

1 stop

9:30 pm - 11:03 pm

LIH

PDX

22h 33m

1 stop

$382American Airlines

mar., mai 5 - mar., mai 12

5:35 pm - 10:56 am

PDX

LIH

20h 21m

1 stop

3:24 pm - 9:30 am

LIH

PDX

15h 06m

1 stop

$383Multiple Airlines

mar., avr. 28 - mer., avr. 29

9:08 pm - 9:52 am

PDX

LIH

15h 44m

1 stop

1:47 pm - 9:53 pm

LIH

PDX

29h 06m

1 stop

$384Multiple Airlines

mer., avr. 15 - jeu., avr. 23

Southwest flights from Portland to Kaua'i

Our best Southwest deals on Portland to Kaua'i flight tickets

Southwest

Apr 27

PDX6:00 amPortland

13h 10m

1 stop

LIH4:10 pmLihue

May 4

LIH8:20 amLihue

11h 20m

2 stops

PDX10:40 pmPortland

$352

Southwest

Apr 22

PDX7:00 amPortland

12h 10m

1 stop

LIH4:10 pmLihue

Apr 29

LIH8:10 pmLihue

11h 35m

2 stops

PDX10:45 amPortland

$372

Southwest

Apr 30

PDX10:45 amPortland

8h 25m

1 stop

LIH4:10 pmLihue

May 4

LIH9:10 pmLihue

8h 55m

1 stop

PDX9:05 amPortland

$376

United Airlines flights from Portland to Kaua'i

Our best United Airlines deals on Portland to Kaua'i flight tickets

United Airlines

May 1

PDX5:30 amPortland

8h 59m

1 stop

LIH11:29 amLihue

May 6

LIH1:16 pmLihue

8h 43m

1 stop

PDX12:59 amPortland

$402

United Airlines

May 12

PDX5:30 amPortland

8h 59m

1 stop

LIH11:29 amLihue

May 21

LIH1:17 pmLihue

8h 33m

1 stop

PDX12:50 amPortland

$431

United Airlines

Apr 9

PDX5:30 amPortland

12h 44m

2 stops

LIH3:14 pmLihue

Apr 13

LIH11:00 pmLihue

10h 25m

1 stop

PDX12:25 pmPortland

$1,004

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandLihue

PDX - LIH

PDXLIH

Portland

lun. 4/27

6:00 am-4:10 pm

1 stop13h 10m

Lihue

lun. 5/4

8:20 am-10:40 pm

2 stops11h 20m

$352

PortlandLihue

PDX - LIH

PDXLIH

Portland

dim. 5/10

6:00 am-12:22 pm

1 stop9h 22m

Lihue

dim. 5/17

9:30 pm-10:20 am

1 stop9h 50m

$366

PortlandLihue

PDX - LIH

PDXLIH

Portland

mar. 5/5

6:00 am-12:22 pm

1 stop9h 22m

Lihue

ven. 5/8

9:30 pm-11:03 pm

1 stop22h 33m

$367

PortlandLihue

PDX - LIH

PDXLIH

Portland

mer. 4/22

7:00 am-4:10 pm

1 stop12h 10m

Lihue

mer. 4/29

8:10 pm-10:45 am

2 stops11h 35m

$372

Quickest round-trip

PortlandLihue

PDX - LIH

PDXLIH

Portland

jeu. 4/30

10:45 am-4:10 pm

1 stop8h 25m

Lihue

lun. 5/4

9:10 pm-9:05 am

1 stop8h 55m

$376

PortlandLihue

PDX - LIH

PDXLIH

Portland

lun. 5/11

9:07 pm-9:46 am

1 stop15h 39m

Lihue

lun. 5/18

1:46 pm-11:17 am

1 stop18h 31m

$380

PortlandLihue

PDX - LIH

PDXLIH

Portland

jeu. 4/23

6:00 am-12:22 pm

1 stop9h 22m

Lihue

lun. 4/27

9:30 pm-10:18 am

1 stop9h 48m

$381

PortlandLihue

PDX - LIH

PDXLIH

Portland

mar. 5/5

6:00 am-12:22 pm

1 stop9h 22m

Lihue

mar. 5/12

9:30 pm-11:03 pm

1 stop22h 33m

$382

PortlandLihue

PDX - LIH

PDXLIH

Portland

mar. 4/28

5:35 pm-10:56 am

1 stop20h 21m

Lihue

mer. 4/29

3:24 pm-9:30 am

1 stop15h 06m

$383

PortlandLihue

PDX - LIH

PDXLIH

Portland

mer. 4/15

9:08 pm-9:52 am

1 stop15h 44m

Lihue

jeu. 4/23

1:47 pm-9:53 pm

1 stop29h 06m

$384

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portland to Kaua'i

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

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

In general, January is the cheapest month to fly from Portland to Kaua'i. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $417. The month of October is another great option to travel to Kaua'i, with average flight prices from Portland averaging around $460.

What is the cheapest day to depart on your flight to Kaua'i?

According to our data, Tuesday is the cheapest day to fly to Kaua'i from Portland. The lowest ticket price found for a Tuesday departure recently was $439. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $693. These prices are subject to change though, so be sure to set up a Price Alert for flights to Kaua'i.

What is the cheapest Portland to Kaua'i flight route?

Fly from Portland to Lihue for the best Portland - Kaua'i flight prices

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

You are more likely to see cheaper flights to Kaua'i from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Kaua'i for around $549 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kaua'i from Portland for as low as $434 on momondo.

What cabin class options are available on Portland to Kaua'i flights?

There are 3 cabin classes available to choose from on Portland to Kaua'i flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Portland to Kaua'i flights?

No. A direct flight is the cheapest option for a flight between Portland to Kaua'i.

Cheap Portland to Kaua'i flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Kaua'i

Best Price Found	$333
Fastest flight time	6h 00m
Direct flights	Every day
Airports in Kaua'i	1 airport

The best one-way flight to Kaua'i from Portland in the past 72 hours is $333. The best round-trip flight deal from Portland to Kaua'i found on momondo in the last 72 hours is $597.

The fastest flight from Portland to Kaua'i takes 6h 00m

Direct flights go from Portland to Kaua'i every day.

There is 1 airport in Kaua'i. From Portland there are direct flights to Lihue (LIH).

Search flight deals

When did momondo last update prices for flights from Portland Airport to Kaua'i?
Prices for flights from Portland Airport to Kaua'i are updated daily.
How many operators does momondo search for flights from Portland Airport to Kaua'i?
There are 6 operators available for flights from Portland Airport to Kaua'i as of March 2026.
How old do you have to be to fly from Portland Airport to Kaua'i?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Kaua'i.
What documentation or ID do you need to fly to Kaua'i?
The required travel and health documents for your Kaua'i trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Kaua'i. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Portland to Kaua'i?
momondo data reveals that the most frequently booked plane model on the route from Portland to Kaua'i is Boeing 737-800 Passenger/BBJ2 (winglets), representing 22.09% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 13.69%, Boeing 737-800 at 9.21%, and Airbus A321neo at 7.30%.

Best airlines flying from Portland to Kaua'i

Compare and see reviews for airlines that fly from Portland to Kaua'i with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $201	Free Cancellation	Rating 7.9 8,360 reviews	Search Delta flights
American Airlines	PriceFrom $217	Free Cancellation	Rating 7.1 11,530 reviews	Search American Airlines flights
United Airlines	PriceFrom $256	Free Cancellation	Rating 7.4 9,517 reviews	Search United Airlines flights
Southwest	PriceFrom $257	Free Cancellation	Rating 8.0 4,329 reviews	Search Southwest flights
Hawaiian Airlines	PriceFrom $289	Free Cancellation	Rating 7.8 2,837 reviews	Search Hawaiian Airlines flights
Alaska Airlines	PriceFrom $357	Free Cancellation	Rating 7.9 12,138 reviews	Search Alaska Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Kaua'i?

It is quick and easy to find Portland to Kaua'i flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Kaua'i that suits you.

Can I find flights from Portland to Kaua'i with flexible booking policies on momondo?

momondo does allow users to show only those flights to Kaua'i from Portland which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Portland to Kaua'i?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Kaua'i from Portland.

I’m not ready to book a flight from Portland to Kaua'i right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Kaua'i from Portland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Flights to New Yorkfrom $48

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Flights to San Franciscofrom $68

Flights to Las Vegasfrom $54

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Flights to Bostonfrom $76

Flights to Atlantafrom $50

Flights to Dallasfrom $55

Flights to Fort Lauderdalefrom $56

Cheap flights from Portland to Kaua'i from $138

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Kaua'i departing on 4/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Southwest flights from Portland to Kaua'i

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How to get the cheapest flight ticket from Portland to Kaua'i

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

What is the cheapest day to depart on your flight to Kaua'i?

What is the cheapest Portland to Kaua'i flight route?

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

What cabin class options are available on Portland to Kaua'i flights?

Can stopping save me money on Portland to Kaua'i flights?

What is the cheapest airline that flies from Portland to Kaua'i?

What airlines fly to Kaua'i?

How many flights depart from Portland to Kaua'i on average per day?

How many flights depart from Portland to Kaua'i on average per week?

Cheap Portland to Kaua'i flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Kaua'i

Best Price Found

Fastest flight time

Direct flights

Airports in Kaua'i

Best airlines flying from Portland to Kaua'i

Compare and see reviews for airlines that fly from Portland to Kaua'i with momondo

Why use momondo?

An easier way to manage your Kaua'i trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Kaua'i

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