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?

Only Economy Class is available on flights from Portland to Ko Samui.

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

Yes. Flexible dates can save you up to 30% on flights from Portland to Ko Samui. Sunday is the cheapest departure day at $1,282 round-trip on average, while Tuesday is the most expensive at $1,811, a difference of $529. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

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.

Have flight prices from Portland to Ko Samui changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $1,106 to $3,039. That means the highest observed fare was about 3x higher than the lowest one.

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 $13 for economy cars. Top options include: • Drive Car Rental • Alamo • Sixt • Enterprise Rent-A-Car • Thai Rent

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.

Which airline is the cheapest to fly from Portland to Ko Samui?

Cathay Pacific ($1,212) offered the cheapest round-trip ticket from Portland to Ko Samui in the last 5 days.

$1,106 CHEAP FLIGHTS from Portland to Ko Samui (PDX - USM)

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Cheapest round-trip

$1,106

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

Multiple Airlines

Tue 1/16Tue 1/23

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

Recent round-trip flight deals from Portland to Ko Samui

Sat, Jan 16 - Sat, Jan 23

8:06 pm - 7:35 pmPDX Portland-USM Ko Samui

56h 29m2 stops Los Angeles Hong Kong Intl

11:40 am - 9:26 amUSM Ko Samui-PDX Portland

36h 46m2 stops Hong Kong Intl San Francisco

$1,106Multiple Airlines

Sat, Jan 16 - Sat, Jan 23

8:06 pm - 7:10 amPDX Portland-USM Ko Samui

44h 04m3 stops Los Angeles Hong Kong Intl Bangkok Suvarnabhumi

11:40 am - 8:40 amUSM Ko Samui-PDX Portland

36h 00m2 stops Hong Kong Intl Los Angeles

$1,212Cathay Pacific

Sat, Jan 16 - Sat, Jan 23

7:30 am - 7:10 amPDX Portland-USM Ko Samui

32h 40m3 stops Seattle/Tacoma Intl Hong Kong Intl Bangkok Suvarnabhumi

8:20 pm - 1:50 pmUSM Ko Samui-PDX Portland

32h 30m3 stops Bangkok Suvarnabhumi Hong Kong Intl Los Angeles

$1,257Multiple Airlines

Thu, Nov 19 - Thu, Nov 26

6:04 pm - 7:35 pmPDX Portland-USM Ko Samui

34h 31m2 stops Los Angeles Hong Kong Intl

11:40 am - 8:28 amUSM Ko Samui-PDX Portland

35h 48m2 stops Hong Kong Intl Los Angeles

$1,268Multiple Airlines

Thu, Nov 19 - Thu, Nov 26

3:55 pm - 3:35 pmPDX Portland-USM Ko Samui

32h 40m3 stops Seattle/Tacoma Intl Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi

2:05 pm - 9:43 amUSM Ko Samui-PDX Portland

34h 38m3 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl Seattle/Tacoma Intl

$1,493Multiple Airlines

Thu, Nov 19 - Thu, Nov 26

10:00 am - 10:55 amPDX Portland-USM Ko Samui

33h 55m3 stops Vancouver Intl Incheon Intl Singapore Changi

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

36h 21m2 stops Bangkok Suvarnabhumi Vancouver Intl

$1,843Multiple Airlines

Tue, Dec 1 - Fri, Dec 11

7:10 pm - 7:35 pmPDX Portland-USM Ko Samui

57h 25m2 stops Vancouver Intl Hong Kong Intl

11:40 am - 1:50 pmUSM Ko Samui-PDX Portland

41h 10m2 stops Hong Kong Intl San Francisco

$2,368Multiple Airlines

Tue, Dec 1 - Fri, Dec 11

6:33 am - 7:45 amPDX Portland-USM Ko Samui

34h 12m3 stops Los Angeles Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi

9:10 pm - 1:50 pmUSM Ko Samui-PDX Portland

31h 40m3 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl San Francisco

$2,587Multiple Airlines

Tue, Dec 1 - Fri, Dec 11

6:33 am - 7:45 amPDX Portland-USM Ko Samui

34h 12m3 stops Los Angeles Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi

8:30 pm - 8:17 pmUSM Ko Samui-PDX Portland

38h 47m3 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl San Francisco

$2,813Multiple Airlines

Tue, Dec 1 - Fri, Dec 11

7:30 am - 7:45 amPDX Portland-USM Ko Samui

33h 15m3 stops Seattle/Tacoma Intl Hong Kong Intl Bangkok Suvarnabhumi

11:40 am - 1:50 pmUSM Ko Samui-PDX Portland

41h 10m2 stops Hong Kong Intl San Francisco

$2,973Cathay Pacific

Booking Insights

Price, demand and travel trends for Portland to Ko Samui flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Which airline is the cheapest to fly from Portland to Ko Samui?: Cathay Pacific ($1,212) offered the cheapest round-trip ticket from Portland to Ko Samui in the last 5 days.

Find deals

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	$1,106

Round-trip 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.

What cabin classes can I book on flights from Portland to Ko Samui?
Only Economy Class is available on flights from Portland to Ko Samui.
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 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.
Have flight prices from Portland to Ko Samui changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $1,106 to $3,039. That means the highest observed fare was about 3x higher than the lowest one.
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 $13 for economy cars. Top options include:

• Drive Car Rental
• Alamo
• Sixt
• Enterprise Rent-A-Car
• Thai Rent
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).
Can I save money by using flexible dates for flights from Portland to Ko Samui?
Yes. Flexible dates can save you up to 30% on flights from Portland to Ko Samui. Sunday is the cheapest departure day at $1,282 round-trip on average, while Tuesday is the most expensive at $1,811, a difference of $529.

Cheaper weekend fares like these are typical of routes dominated by weekday business travel.
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 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.

If your dates are flexible, aim for a Sunday departure and avoid flying on Tuesday. On this route, Sunday flights average $1,282, about $529 less than Tuesday fares (29% 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
• Melia Koh Samui
• 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

Price, demand and travel trends for Portland to Ko Samui flights

Which airline is the cheapest to fly 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

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