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 53% 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.

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

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

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

The number of flights available between Portland and Kaua'i is 6 per week as of December 2025. The most frequent departure day is Wed, with 33% 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 December 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.

$129 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

Enter your travel dates to find the best prices.

1:30 pm - 7:55 pm

PDX

LIH

8h 25m1 stop

10:45 pm - 12:44 pm

LIH

PDX

11h 59m1 stop

$306Delta

Wed, Jan 7 - Mon, Jan 12

7:37 pm - 7:55 pm

PDX

LIH

26h 18m1 stop

9:31 pm - 12:44 pm

LIH

PDX

13h 13m2 stops

$309Delta

Tue, Jan 6 - Mon, Jan 12

5:30 am - 6:31 pm

PDX

LIH

15h 01m2 stops

9:20 pm - 8:33 am

LIH

PDX

9h 13m1 stop

$311Delta

Wed, Jan 28 - Wed, Feb 4

5:15 pm - 7:55 pm

PDX

LIH

28h 40m1 stop

10:45 pm - 8:33 am

LIH

PDX

7h 48m1 stop

$313Delta

Mon, Jan 5 - Mon, Jan 12

5:35 am - 12:54 pm

PDX

LIH

9h 19m1 stop

2:10 pm - 12:39 am

LIH

PDX

8h 29m1 stop

$314United Airlines

Fri, Jan 30 - Wed, Feb 4

7:10 am - 6:31 pm

PDX

LIH

13h 21m2 stops

9:20 pm - 10:07 am

LIH

PDX

10h 47m1 stop

$316Delta

Wed, Jan 28 - Thu, Feb 5

5:35 am - 12:54 pm

PDX

LIH

9h 19m1 stop

2:10 pm - 12:43 am

LIH

PDX

8h 33m1 stop

$317United Airlines

Sat, Jan 24 - Fri, Jan 30

5:25 am - 3:55 pm

PDX

LIH

12h 30m1 stop

10:10 pm - 11:22 am

LIH

PDX

11h 12m1 stop

$319American Airlines

Tue, Jan 20 - Thu, Jan 29

6:01 am - 4:37 pm

PDX

LIH

12h 36m1 stop

10:10 pm - 10:39 am

LIH

PDX

10h 29m1 stop

$320American Airlines

Fri, Jan 23 - Wed, Jan 28

5:30 am - 6:21 pm

PDX

LIH

14h 51m2 stops

10:45 pm - 8:33 am

LIH

PDX

7h 48m1 stop

$321Delta

Fri, Jan 9 - Fri, Jan 16

Delta flights from Portland to Kaua'i

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

Delta

Jan 7

PDX1:30 pmPortland

8h 25m

1 stop

LIH7:55 pmLihue

Jan 12

LIH10:45 pmLihue

11h 59m

1 stop

PDX12:44 pmPortland

$306

Find similar

Delta

Jan 6

PDX7:37 pmPortland

26h 18m

1 stop

LIH7:55 pmLihue

Jan 12

LIH9:31 pmLihue

13h 13m

2 stops

PDX12:44 pmPortland

$309

Find similar

Delta

Jan 28

PDX5:30 amPortland

15h 01m

2 stops

LIH6:31 pmLihue

Feb 4

LIH9:20 pmLihue

9h 13m

1 stop

PDX8:33 amPortland

$311

Find similar

United Airlines flights from Portland to Kaua'i

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

United Airlines

Jan 30

PDX5:35 amPortland

9h 19m

1 stop

LIH12:54 pmLihue

Feb 4

LIH2:10 pmLihue

8h 29m

1 stop

PDX12:39 amPortland

$314

Find similar

United Airlines

Jan 24

PDX5:35 amPortland

9h 19m

1 stop

LIH12:54 pmLihue

Jan 30

LIH2:10 pmLihue

8h 33m

1 stop

PDX12:43 amPortland

$317

Find similar

United Airlines

Mar 1

PDX3:50 pmPortland

8h 54m

1 stop

LIH10:44 pmLihue

Mar 9

LIH11:13 pmLihue

10h 20m

1 stop

PDX12:33 pmPortland

$332

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandLihue

PDX - LIH

PDXLIH

Portland

Wed 1/7

1:30 pm-7:55 pm

1 stop8h 25m

Lihue

Mon 1/12

10:45 pm-12:44 pm

1 stop11h 59m

$306

PortlandLihue

PDX - LIH

PDXLIH

Portland

Tue 1/6

7:37 pm-7:55 pm

1 stop26h 18m

Lihue

Mon 1/12

9:31 pm-12:44 pm

2 stops13h 13m

$309

PortlandLihue

PDX - LIH

PDXLIH

Portland

Wed 1/28

5:30 am-6:31 pm

2 stops15h 01m

Lihue

Wed 2/4

9:20 pm-8:33 am

1 stop9h 13m

$311

PortlandLihue

PDX - LIH

PDXLIH

Portland

Mon 1/5

5:15 pm-7:55 pm

1 stop28h 40m

Lihue

Mon 1/12

10:45 pm-8:33 am

1 stop7h 48m

$313

PortlandLihue

PDX - LIH

PDXLIH

Portland

Fri 1/30

5:35 am-12:54 pm

1 stop9h 19m

Lihue

Wed 2/4

2:10 pm-12:39 am

1 stop8h 29m

$314

PortlandLihue

PDX - LIH

PDXLIH

Portland

Wed 1/28

7:10 am-6:31 pm

2 stops13h 21m

Lihue

Thu 2/5

9:20 pm-10:07 am

1 stop10h 47m

$316

PortlandLihue

PDX - LIH

PDXLIH

Portland

Sat 1/24

5:35 am-12:54 pm

1 stop9h 19m

Lihue

Fri 1/30

2:10 pm-12:43 am

1 stop8h 33m

$317

PortlandLihue

PDX - LIH

PDXLIH

Portland

Tue 1/20

5:25 am-3:55 pm

1 stop12h 30m

Lihue

Thu 1/29

10:10 pm-11:22 am

1 stop11h 12m

$319

PortlandLihue

PDX - LIH

PDXLIH

Portland

Fri 1/23

6:01 am-4:37 pm

1 stop12h 36m

Lihue

Wed 1/28

10:10 pm-10:39 am

1 stop10h 29m

$320

PortlandLihue

PDX - LIH

PDXLIH

Portland

Fri 1/9

5:30 am-6:21 pm

2 stops14h 51m

Lihue

Fri 1/16

10:45 pm-8:33 am

1 stop7h 48m

$321

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, September 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 $442. The month of January is another great option to travel to Kaua'i, with average flight prices from Portland averaging around $447.

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 $467. 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 $750. 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 $547 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 $446 on momondo.

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

There are 2 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	$314
Fastest flight time	6h 08m
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 $314. The best round-trip flight deal from Portland to Kaua'i found on momondo in the last 72 hours is $452.

The fastest flight from Portland to Kaua'i takes 6h 08m

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 December 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 18.53% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 12.16%, Boeing 737 MAX 9 at 8.47%, and Boeing 737-800 at 7.71%.

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 $237	Free Cancellation	Rating 7.9 8,008 reviews	Search Delta flights
Southwest	PriceFrom $257	Free Cancellation	Rating 7.9 4,252 reviews	Search Southwest flights
United Airlines	PriceFrom $295	Free Cancellation	Rating 7.4 9,095 reviews	Search United Airlines flights
Hawaiian Airlines	PriceFrom $297	Free Cancellation	Rating 7.8 2,818 reviews	Search Hawaiian Airlines flights
American Airlines	PriceFrom $310	Free Cancellation	Rating 7.2 11,048 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $322	Free Cancellation	Rating 8.0 11,429 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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Popular cities in Kaua'i

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Flights to Las Vegasfrom $40

Flights to Washington, D.C.from $49

Flights to Bostonfrom $55

Flights to Atlantafrom $49

Flights to Dallasfrom $52

Flights to Seattlefrom $58

Cheap flights from Portland to Kaua'i from $129

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 2/18. 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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Find the cheapest flights from Portland to Kaua'i

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Delta flights from Portland to Kaua'i

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

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Our best United 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

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 are 2 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.

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

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

What airlines fly to Kaua'i?

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

The number of flights available between Portland and Kaua'i is 6 per week as of December 2025. The most frequent departure day is Wed, with 33% of weekly flights leaving on this day.

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