Which airports can I use when flying from Portland to Ko Samui?

Flights from Portland to Ko Samui usually depart from Portland (PDX) and arrive at Ko Samui (USM).

What cabin classes can I book on flights from Portland to Ko Samui?

Two cabin classes are available on flights from Portland to Ko Samui: • Economy Class • Premium Economy Class

Can I save money by using flexible dates for flights from Portland to Ko Samui?

Yes. Being flexible with your travel dates can save you up to 33% on the Portland to Ko Samui route. Monday is the cheapest departure day at $1,220 round-trip on average, while Tuesday is the most expensive at $1,811, a difference of $591. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

What popular places can I visit in Ko Samui?

Some of the most popular sights in Ko Samui are Lamai Beach, Chaweng Beach and Fishermans Village. These are among the most viewed places in Ko Samui on KAYAK.

Do I need a passport to fly from Portland to Ko Samui?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

How are flight prices from Portland to Ko Samui looking right now?

One-way fares from Portland to Ko Samui are currently in line with typical prices for this route. Average one-way fares are about $658.

What is the time difference between Portland and Ko Samui?

Ko Samui is 14 hours ahead of Portland (Indochina Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Ko Samui Airport (USM)?

Ko Samui Airport (USM) hosts 5 major car rental companies, with daily rates starting from around $14 for economy cars. Top options include: · Drive Car Rental · Alamo · Sixt · Enterprise Rent-A-Car · Hertz

How much should I expect to pay for a Portland to Ko Samui flight?

Round-trip flights from Portland to Ko Samui range from $1,282 to $1,322, with an average of $1,322 over the past 12 months. Anything below $1,282 counts as a good deal.

Cheap Flights from Portland to Ko Samui | KAYAK

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Cheapest round-trip

$1,208

Typical prices: $1,282-$1,322

Cathay Pacific

Sat 10/20Sat 10/27

PDX - USM • 2 stops

Cheapest one-way

$570

Typical prices: $661-$661

Multiple Airlines

Fri 2/9

PDX - USM • 2 stops

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Flight Deals

Cheap Flights from Portland to Ko Samui (PDX-USM)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Portland to Ko Samui

Tue, Oct 20 - Tue, Oct 27

5:03 pm - 7:40 pmPDX Portland-USM Ko Samui

36h 37m2 stops Los Angeles Los Angeles Hong Kong Intl

2:25 pm - 9:31 amUSM Ko Samui-PDX Portland

33h 06m3 stops Bangkok Suvarnabhumi Hong Kong Intl Los Angeles Los Angeles

$1,208Multiple Airlines

Sun, Jan 17 - Mon, Jan 25

2:46 pm - 7:35 pmPDX Portland-USM Ko Samui

37h 49m2 stops San Francisco Hong Kong Intl

8:30 pm - 9:26 amUSM Ko Samui-PDX Portland

27h 56m2 stops Bangkok Suvarnabhumi Vancouver Intl

$1,223Multiple Airlines

Tue, Oct 20 - Tue, Oct 27

7:03 am - 7:10 amPDX Portland-USM Ko Samui

34h 07m3 stops Los Angeles Los Angeles Hong Kong Intl Bangkok Suvarnabhumi

2:25 pm - 9:31 amUSM Ko Samui-PDX Portland

33h 06m3 stops Bangkok Suvarnabhumi Hong Kong Intl Los Angeles Los Angeles

$1,252Multiple Airlines

Fri, Oct 23 - Fri, Oct 30

7:18 am - 7:45 amPDX Portland-USM Ko Samui

34h 27m3 stops San Francisco Hong Kong Intl Bangkok Suvarnabhumi

8:30 am - 11:16 pmUSM Ko Samui-PDX Portland

28h 46m3 stops Bangkok Suvarnabhumi Hong Kong Intl Los Angeles Los Angeles

$1,308Multiple Airlines

Tue, Oct 20 - Tue, Oct 27

7:18 am - 7:40 pmPDX Portland-USM Ko Samui

46h 22m2 stops San Francisco Hong Kong Intl

9:10 pm - 2:41 pmUSM Ko Samui-PDX Portland

31h 31m2 stops Bangkok Suvarnabhumi Vancouver Intl

$1,321Multiple Airlines

Fri, Oct 23 - Fri, Oct 30

6:18 pm - 7:35 pmPDX Portland-USM Ko Samui

35h 17m2 stops Los Angeles Los Angeles Hong Kong Intl

11:40 am - 11:16 pmUSM Ko Samui-PDX Portland

25h 36m2 stops Hong Kong Intl Los Angeles Los Angeles

$1,345Multiple Airlines

Sun, Jan 17 - Mon, Jan 25

7:09 am - 8:40 amPDX Portland-USM Ko Samui

34h 31m3 stops San Francisco Tokyo Haneda Bangkok Suvarnabhumi

9:10 pm - 6:31 pmUSM Ko Samui-PDX Portland

36h 21m2 stops Bangkok Suvarnabhumi Vancouver Intl

$1,613Multiple Airlines

Fri, Oct 23 - Fri, Oct 30

10:10 am - 8:10 amPDX Portland-USM Ko Samui

32h 00m2 stops Vancouver Intl Bangkok Suvarnabhumi

6:40 pm - 2:41 pmUSM Ko Samui-PDX Portland

34h 01m3 stops Bangkok Suvarnabhumi Incheon Intl Vancouver Intl

$1,833Multiple Airlines

Tue, Dec 1 - Fri, Dec 11

7:40 pm - 12:35 pmPDX Portland-USM Ko Samui

25h 55m3 stops Seattle/Tacoma Intl Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi

9:10 pm - 10:44 pmUSM Ko Samui-PDX Portland

40h 34m3 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl Seattle/Tacoma Intl

$2,453Multiple Airlines

Tue, Dec 1 - Fri, Dec 11

7:40 pm - 12:35 pmPDX Portland-USM Ko Samui

25h 55m3 stops Seattle/Tacoma Intl Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi

9:10 pm - 10:44 pmUSM Ko Samui-PDX Portland

40h 34m3 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl Seattle/Tacoma Intl

$2,499Multiple Airlines

Useful Info

Expert advice

Our travel experts

Harriet Baskas

Expert on Alaska Airlines and JetBlue

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Cheapest flight	$570

Flight from Portland to Ko Samui

When to book flights from Portland to Ko Samui

Are your dates flexible? Find out the best times to travel from Portland to Ko Samui based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Which airports can I use when flying from Portland to Ko Samui?
Flights from Portland to Ko Samui usually depart from Portland (PDX) and arrive at Ko Samui (USM).
What cabin classes can I book on flights from Portland to Ko Samui?
Two cabin classes are available on flights from Portland to Ko Samui:

• Economy Class
• Premium Economy Class
Can I save money by using flexible dates for flights from Portland to Ko Samui?
Yes. Being flexible with your travel dates can save you up to 33% on the Portland to Ko Samui route. Monday is the cheapest departure day at $1,220 round-trip on average, while Tuesday is the most expensive at $1,811, a difference of $591. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
What popular places can I visit in Ko Samui?
Some of the most popular sights in Ko Samui are Lamai Beach, Chaweng Beach and Fishermans Village. These are among the most viewed places in Ko Samui on KAYAK.
Do I need a passport to fly from Portland to Ko Samui?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
How are flight prices from Portland to Ko Samui looking right now?
One-way fares from Portland to Ko Samui are currently in line with typical prices for this route. Average one-way fares are about $658.
What is the time difference between Portland and Ko Samui?
Ko Samui is 14 hours ahead of Portland (Indochina Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.
What car rental options are available at Ko Samui Airport (USM)?
Ko Samui Airport (USM) hosts 5 major car rental companies, with daily rates starting from around $14 for economy cars. Top options include:
· Drive Car Rental
· Alamo
· Sixt
· Enterprise Rent-A-Car
· Hertz
How much should I expect to pay for a Portland to Ko Samui flight?
Round-trip flights from Portland to Ko Samui range from $1,282 to $1,322, with an average of $1,322 over the past 12 months. Anything below $1,282 counts as a good deal.

If your dates can be flexible, aim for a Monday departure instead of Tuesday. On this route, Monday flights average $1,220 - about $591 less than Tuesday (33% savings) based on the last 12 months.
If you're arriving late at night and need somewhere to stay, check out these hotels close to Ko Samui Airport.
- Ozo Chaweng Samui - Sha Extra Plus
- Avani Chaweng Samui Hotel & Beach Club - Adults Only
- Amari Koh Samui

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Everything you should know

Cheap Flights from Portland to Ko Samui (PDX-USM)

Recent round-trip flight deals from Portland to Ko Samui

Recent one-way flight deals from Portland to Ko Samui

Recent last minute flight deals from Portland to Ko Samui

Expert advice for your flight from Portland to Ko Samui

Key details for Portland to Ko Samui flights

Cheapest flight

When to book flights from Portland to Ko Samui

Your Portland to Ko Samui flight questions, answered

Your guide to booking Portland to Ko Samui flights

More options for your flight from Portland to Ko Samui

Complete your trip to Ko Samui with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from Portland to Ko Samui

Find direct flights to and from Portland and Ko Samui

Flights from domestic origins to Ko Samui

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