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

United Airlines, Alaska Airlines, and American Airlines are the most popular carriers operating from Portland to Kaua'i

What airlines fly to Kaua'i?

Alaska Airlines, Hawaiian Airlines and Delta 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 44% 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.

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 September 2025.

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.

$116 Cheap Flights from Portland to Kaua'i in 2025/26

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Find the cheapest flights from Portland to Kaua'i

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

10:00 am - 7:47 pmPDX-LIH

11h 47m1 stop

10:45 pm - 8:37 amLIH-PDX

7h 52m1 stop

$313Delta

Find Deal

Thu, Feb 26 - Wed, Mar 4

5:45 pm - 10:45 amPDX-LIH

19h 00m1 stop

3:10 pm - 9:36 amLIH-PDX

16h 26m1 stop

$314Alaska Airlines

Find Deal

Wed, Feb 25 - Sun, Mar 1

1:38 pm - 8:31 pmPDX-LIH

8h 53m1 stop

10:45 pm - 7:11 pmLIH-PDX

18h 26m1 stop

$321Delta

Find Deal

Mon, Feb 23 - Sun, Mar 1

5:30 am - 7:47 pmPDX-LIH

16h 17m2 stops

10:26 pm - 1:14 pmLIH-PDX

12h 48m2 stops

$324Delta

Find Deal

Thu, Jan 22 - Tue, Jan 27

7:15 am - 11:55 amPDX-LIH

6h 40mnonstop

12:03 pm - 9:05 pmLIH-PDX

7h 02m1 stop

$325Alaska Airlines

Find Deal

Wed, Jan 7 - Wed, Jan 14

7:15 am - 11:55 amPDX-LIH

6h 40mnonstop

10:10 pm - 7:48 amLIH-PDX

7h 38m1 stop

$326Alaska Airlines

Find Deal

Wed, Jan 7 - Mon, Jan 12

5:30 am - 11:21 amPDX-LIH

8h 51m1 stop

12:50 pm - 12:28 amLIH-PDX

8h 38m1 stop

$331United Airlines

Find Deal

Thu, Oct 16 - Thu, Oct 23

5:00 am - 1:15 pmPDX-LIH

10h 15m1 stop

9:10 pm - 11:25 amLIH-PDX

12h 15m1 stop

$344Southwest

Find Deal

Wed, Nov 5 - Tue, Nov 11

10:40 am - 4:00 pmPDX-LIH

8h 20m1 stop

8:15 am - 9:45 pmLIH-PDX

10h 30m2 stops

$349Southwest

Find Deal

Thu, Oct 23 - Fri, Oct 31

7:00 am - 2:15 pmPDX-LIH

9h 15m1 stop

12:55 pm - 8:37 pmLIH-PDX

5h 42mnonstop

$372Hawaiian Airlines

Find Deal

Tue, Mar 3 - Wed, Mar 4

American Airlines flights from Portland to Kaua'i

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

American Airlines

Feb 6

PDX6:00 amPortland

15h 46m

1 stop

LIH7:46 pmLihue

Feb 11

LIH10:10 pmLihue

9h 56m

1 stop

PDX10:06 amPortland

$341

Find similar

American Airlines

Nov 7

PDX5:42 pmPortland

21h 36m

1 stop

LIH1:18 pmLihue

Nov 16

LIH10:39 pmLihue

10h 19m

1 stop

PDX10:58 amPortland

$374

Find similar

Alaska Airlines flights from Portland to Kaua'i

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

Alaska Airlines

Feb 25

PDX5:45 pmPortland

19h 00m

1 stop

LIH10:45 amLihue

Mar 1

LIH3:10 pmLihue

16h 26m

1 stop

PDX9:36 amPortland

$314

Find similar

Alaska Airlines

Jan 7

PDX7:15 amPortland

6h 40m

LIH11:55 amLihue

Jan 14

LIH12:03 pmLihue

7h 02m

1 stop

PDX9:05 pmPortland

$325

Find similar

Alaska Airlines

Jan 7

PDX7:15 amPortland

6h 40m

LIH11:55 amLihue

Jan 12

LIH10:10 pmLihue

7h 38m

1 stop

PDX7:48 amPortland

$326

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandLihue

PDX - LIH

PDXLIH

Portland

Thu 2/26

10:00 am-7:47 pm

1 stop11h 47m

Lihue

Wed 3/4

10:45 pm-8:37 am

1 stop7h 52m

$313

PortlandLihue

PDX - LIH

PDXLIH

Portland

Wed 2/25

5:45 pm-10:45 am

1 stop19h 00m

Lihue

Sun 3/1

3:10 pm-9:36 am

1 stop16h 26m

$314

PortlandLihue

PDX - LIH

PDXLIH

Portland

Mon 2/23

1:38 pm-8:31 pm

1 stop8h 53m

Lihue

Sun 3/1

10:45 pm-7:11 pm

1 stop18h 26m

$321

PortlandLihue

PDX - LIH

PDXLIH

Portland

Thu 1/22

5:30 am-7:47 pm

2 stops16h 17m

Lihue

Tue 1/27

10:26 pm-1:14 pm

2 stops12h 48m

$324

PortlandLihue

PDX - LIH

PDXLIH

Portland

Wed 1/7

7:15 am-11:55 am

Nonstop6h 40m

Lihue

Wed 1/14

12:03 pm-9:05 pm

1 stop7h 02m

$325

PortlandLihue

PDX - LIH

PDXLIH

Portland

Wed 1/7

7:15 am-11:55 am

Nonstop6h 40m

Lihue

Mon 1/12

10:10 pm-7:48 am

1 stop7h 38m

$326

PortlandLihue

PDX - LIH

PDXLIH

Portland

Thu 10/16

5:30 am-11:21 am

1 stop8h 51m

Lihue

Thu 10/23

12:50 pm-12:28 am

1 stop8h 38m

$331

PortlandLihue

PDX - LIH

PDXLIH

Portland

Wed 11/5

5:00 am-1:15 pm

1 stop10h 15m

Lihue

Tue 11/11

9:10 pm-11:25 am

1 stop12h 15m

$344

PortlandLihue

PDX - LIH

PDXLIH

Portland

Thu 10/23

10:40 am-4:00 pm

1 stop8h 20m

Lihue

Fri 10/31

8:15 am-9:45 pm

2 stops10h 30m

$349

PortlandLihue

PDX - LIH

PDXLIH

Portland

Tue 3/3

7:00 am-2:15 pm

1 stop9h 15m

Lihue

Wed 3/4

12:55 pm-8:37 pm

Nonstop5h 42m

$372

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

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 $385. The month of September is another great option to travel to Kaua'i, with average flight prices from Portland averaging around $446.

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 $297. 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 $753. 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 time of day to depart on your flight to Kaua'i?

The cheapest time of day to fly to Kaua'i is in the evening when flights can be purchased for as low as $261. In contrast, the most expensive time of day to depart to Kaua'i is in the afternoon when prices are around $691.

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 $535 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 $423 on momondo.

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

There is only 1 cabin class 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	$446
Fastest flight time	6h 16m
Direct flights	Every day
Airports in Kaua'i	1 airport

The best flight deal from Portland to Kaua'i found on momondo in the last 72 hours is $446

The fastest flight from Portland to Kaua'i takes 6h 16m

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

There is 1 airport near Kaua'i: 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 September 2025.
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 13.18% of all bookings. The subsequent popular models are Boeing 737 MAX 9 at 10.87%, Boeing 737-900 Passenger/BBJ3 (winglets) at 10.15%, and Boeing 737 MAX 8 at 9.45%.

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
Hawaiian Airlines	PriceFrom $244	Free Cancellation	Rating 7.8 2,751 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $245	Free Cancellation	Rating 7.9 7,973 reviews	Search Delta flights
American Airlines	PriceFrom $257	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $268	Free Cancellation	Rating 7.4 8,928 reviews	Search United Airlines flights
Southwest	PriceFrom $286	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $311	Free Cancellation	Rating 8.0 10,000 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.

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.

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Find better results for your trip to Kaua'i

Popular cities in Kaua'i

Flights to New Yorkfrom $50

Flights to Los Angelesfrom $49

Flights to Miamifrom $52

Flights to Chicagofrom $65

Flights to Orlandofrom $57

Flights to Las Vegasfrom $47

Flights to San Franciscofrom $59

Flights to Washington, D.C.from $60

Flights to Bostonfrom $68

Flights to Atlantafrom $51

Flights to Dallasfrom $60

Flights to Seattlefrom $86

Cheap flights from Portland to Kaua'i from $116

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 10/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

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Find the cheapest flights from Portland to Kaua'i

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

American Airlines flights from Portland to Kaua'i

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

Alaska Airlines flights from Portland to Kaua'i

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

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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

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 time of day to depart on your flight to Kaua'i?

The cheapest time of day to fly to Kaua'i is in the evening when flights can be purchased for as low as $261. In contrast, the most expensive time of day to depart to Kaua'i is in the afternoon when prices are around $691.

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?

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

There is only 1 cabin class 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.

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

United Airlines, Alaska Airlines, and American Airlines are the most popular carriers operating from Portland to Kaua'i

What airlines fly 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

Fastest flight time

Direct flights

Airports in Kaua'i

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

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

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

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

What is the most popular plane model from Portland to 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?

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

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

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

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

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

Popular cities in Kaua'i

Popular flights according to clicks in the last 7 days on momondo