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 $1,086 to $6,659. That means the highest observed fare was about 6x higher than the lowest one.

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

One-way fares from Portland to Ko Samui are currently lower than usual. Average one-way flight prices are about $666, which is 46% below the typical average for this route.

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.

$660 CHEAP FLIGHTS from Portland to Ko Samui (PDX - USM)

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Cheapest round-trip

$1,086

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

Multiple Airlines

Fri 11/16Fri 11/23

PDX - USM • 2 stops

Cheapest one-way

$660

Typical prices: $661-$1,231

Cathay Pacific

Tue 3/6

PDX - USM • 3 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

Mon, Nov 16 - Mon, Nov 23

5:04 pm - 7:35 pmPDX Portland-USM Ko Samui

35h 31m2 stops Los Angeles Hong Kong Intl

11:40 am - 8:47 pmUSM Ko Samui-PDX Portland

24h 07m2 stops Hong Kong Intl Los Angeles

$1,086Multiple Airlines

Sat, Feb 27 - Thu, Mar 11

9:50 pm - 7:35 pmPDX Portland-USM Ko Samui

54h 45m2 stops San Francisco Hong Kong Intl

11:40 am - 11:54 pmUSM Ko Samui-PDX Portland

27h 14m2 stops Hong Kong Intl Los Angeles

$1,098Multiple Airlines

Sun, Nov 1 - Thu, Nov 26

10:46 am - 7:35 pmPDX Portland-USM Ko Samui

41h 49m2 stops Los Angeles Hong Kong Intl

11:40 am - 10:36 amUSM Ko Samui-PDX Portland

37h 56m2 stops Hong Kong Intl Los Angeles

$1,107Multiple Airlines

Mon, Nov 16 - Mon, Nov 23

5:04 pm - 7:35 pmPDX Portland-USM Ko Samui

35h 31m2 stops Los Angeles Hong Kong Intl

8:30 pm - 11:40 amUSM Ko Samui-PDX Portland

30h 10m3 stops Bangkok Suvarnabhumi Hong Kong Intl Seattle/Tacoma Intl

$1,118Multiple Airlines

Tue, Feb 16 - Tue, Feb 23

5:40 pm - 7:35 pmPDX Portland-USM Ko Samui

34h 55m2 stops Los Angeles Hong Kong Intl

4:30 pm - 9:46 amUSM Ko Samui-PDX Portland

32h 16m3 stops Bangkok Suvarnabhumi Hong Kong Intl San Francisco

$1,163Multiple Airlines

Sun, Nov 1 - Thu, Nov 26

5:04 pm - 7:35 pmPDX Portland-USM Ko Samui

35h 31m2 stops Los Angeles Hong Kong Intl

11:40 am - 9:43 amUSM Ko Samui-PDX Portland

37h 03m3 stops Hong Kong Intl Vancouver Intl Seattle/Tacoma Intl

$1,168Multiple Airlines

Sat, Mar 6 - Thu, Mar 11

9:30 pm - 7:35 pmPDX Portland-USM Ko Samui

55h 05m2 stops Los Angeles Hong Kong Intl

11:40 am - 11:54 pmUSM Ko Samui-PDX Portland

27h 14m2 stops Hong Kong Intl Los Angeles

$1,203Multiple Airlines

Mon, Nov 16 - Mon, Nov 23

6:53 am - 7:10 amPDX Portland-USM Ko Samui

33h 17m3 stops Los Angeles Hong Kong Intl Bangkok Suvarnabhumi

8:30 pm - 11:40 amUSM Ko Samui-PDX Portland

30h 10m3 stops Bangkok Suvarnabhumi Hong Kong Intl Seattle/Tacoma Intl

$1,207Multiple Airlines

Sat, Feb 27 - Thu, Mar 11

9:30 pm - 7:10 amPDX Portland-USM Ko Samui

42h 40m3 stops Los Angeles Hong Kong Intl Bangkok Suvarnabhumi

11:40 am - 8:31 pmUSM Ko Samui-PDX Portland

23h 51m2 stops Hong Kong Intl Los Angeles

$1,207Multiple Airlines

Tue, Feb 16 - Tue, Feb 23

7:15 am - 7:45 amPDX Portland-USM Ko Samui

33h 30m3 stops Seattle/Tacoma Intl Hong Kong Intl Bangkok Suvarnabhumi

9:10 pm - 12:22 pmUSM Ko Samui-PDX Portland

30h 12m3 stops Bangkok Suvarnabhumi Hong Kong Intl Seattle/Tacoma Intl

$1,207Multiple 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	$660

One-way 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 $1,086 to $6,659. That means the highest observed fare was about 6x higher than the lowest one.
How are flight prices from Portland to Ko Samui looking right now?
One-way fares from Portland to Ko Samui are currently lower than usual. Average one-way flight prices are about $666, which is 46% below the typical average for this route.
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
• Amari Koh Samui
• Melia Koh Samui

More options for your flight from Portland to Ko Samui

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$660 Find Cheap Flights from Portland to Ko Samui - Compare and Save

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

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

Flights to other popular destinations