When did momondo last update prices for flights from Portland Airport to Ko Samui Airport?

Prices for flights from Portland Airport to Ko Samui Airport are updated daily.

How old do you have to be to fly from Portland Airport to Ko Samui Airport?

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 Ko Samui Airport.

What documentation or ID do you need to fly to Ko Samui Airport?

The necessary travel and health documents for your Ko Samui Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$128 Cheap Flights from Portland to Ko Samui in 2025/26

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Find the cheapest flights from Portland to Ko Samui

Round-trip

One-way

Last minute

Cheap round-trip flights

3:15 pm - 9:20 amPDX-USM

27h 05m2 stops

9:10 pm - 9:15 amUSM-PDX

27h 05m2 stops

$1,073Multiple Airlines

Find Deal

jue., ene. 22 - mar., ene. 27

3:15 pm - 12:50 pmPDX-USM

30h 35m2 stops

7:10 pm - 9:15 amUSM-PDX

29h 05m2 stops

$1,084Multiple Airlines

Find Deal

jue., ene. 22 - mar., ene. 27

7:00 pm - 10:35 amPDX-USM

24h 35m2 stops

7:00 pm - 9:15 amUSM-PDX

29h 15m2 stops

$1,089Multiple Airlines

Find Deal

jue., ene. 22 - mar., ene. 27

3:15 pm - 9:20 amPDX-USM

27h 05m2 stops

9:10 pm - 9:15 amUSM-PDX

27h 05m2 stops

$1,115Multiple Airlines

Find Deal

sáb., feb. 14 - dom., feb. 22

7:00 pm - 6:15 pmPDX-USM

32h 15m2 stops

4:25 pm - 9:15 amUSM-PDX

31h 50m2 stops

$1,141Multiple Airlines

Find Deal

mié., feb. 4 - mié., feb. 18

7:00 pm - 11:35 amPDX-USM

25h 35m2 stops

1:25 pm - 9:15 amUSM-PDX

34h 50m2 stops

$1,142Multiple Airlines

Find Deal

mié., ene. 21 - sáb., ene. 31

7:00 pm - 6:15 pmPDX-USM

32h 15m2 stops

4:25 pm - 9:15 amUSM-PDX

31h 50m2 stops

$1,151Multiple Airlines

Find Deal

mié., feb. 4 - mié., feb. 18

7:30 am - 6:15 pmPDX-USM

43h 45m3 stops

1:25 pm - 1:19 pmUSM-PDX

38h 54m2 stops

$2,014Singapore Airlines

Find Deal

jue., ene. 22 - mar., ene. 27

7:10 am - 9:05 pmPDX-USM

46h 55m2 stops

8:15 am - 9:47 amUSM-PDX

40h 32m2 stops

$2,368Singapore Airlines

Find Deal

sáb., feb. 21 - jue., mar. 5

10:40 am - 10:35 amPDX-USM

32h 55m3 stops

7:35 pm - 4:57 pmUSM-PDX

36h 22m3 stops

$4,931Qatar Airways

Find Deal

jue., dic. 25 - vie., ene. 2

Singapore Airlines flights from Portland to Ko Samui

Our best Singapore Airlines deals on Portland to Ko Samui flight tickets

Singapore Airlines

Jan 22

PDX7:30 amPortland

43h 45m

3 stops

USM6:15 pmKo Samui

Jan 27

USM1:25 pmKo Samui

38h 54m

2 stops

PDX1:19 pmPortland

$2,014

Find similar

Singapore Airlines

Feb 21

PDX7:10 amPortland

46h 55m

2 stops

USM9:05 pmKo Samui

Mar 5

USM8:15 amKo Samui

40h 32m

2 stops

PDX9:47 amPortland

$2,368

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandKo Samui

PDX - USM

PDXUSM

Portland

jue. 1/22

3:15 pm-9:20 am

2 stops27h 05m

Ko Samui

mar. 1/27

9:10 pm-9:15 am

2 stops27h 05m

$1,073

PortlandKo Samui

PDX - USM

PDXUSM

Portland

jue. 1/22

3:15 pm-12:50 pm

2 stops30h 35m

Ko Samui

mar. 1/27

7:10 pm-9:15 am

2 stops29h 05m

$1,084

PortlandKo Samui

PDX - USM

PDXUSM

Portland

jue. 1/22

7:00 pm-10:35 am

2 stops24h 35m

Ko Samui

mar. 1/27

7:00 pm-9:15 am

2 stops29h 15m

$1,089

PortlandKo Samui

PDX - USM

PDXUSM

Portland

sáb. 2/14

3:15 pm-9:20 am

2 stops27h 05m

Ko Samui

dom. 2/22

9:10 pm-9:15 am

2 stops27h 05m

$1,115

PortlandKo Samui

PDX - USM

PDXUSM

Portland

mié. 2/4

7:00 pm-6:15 pm

2 stops32h 15m

Ko Samui

mié. 2/18

4:25 pm-9:15 am

2 stops31h 50m

$1,141

PortlandKo Samui

PDX - USM

PDXUSM

Portland

mié. 1/21

7:00 pm-11:35 am

2 stops25h 35m

Ko Samui

sáb. 1/31

1:25 pm-9:15 am

2 stops34h 50m

$1,142

PortlandKo Samui

PDX - USM

PDXUSM

Portland

mié. 2/4

7:00 pm-6:15 pm

2 stops32h 15m

Ko Samui

mié. 2/18

4:25 pm-9:15 am

2 stops31h 50m

$1,151

PortlandKo Samui

PDX - USM

PDXUSM

Portland

jue. 1/22

7:30 am-6:15 pm

3 stops43h 45m

Ko Samui

mar. 1/27

1:25 pm-1:19 pm

2 stops38h 54m

$2,014

PortlandKo Samui

PDX - USM

PDXUSM

Portland

sáb. 2/21

7:10 am-9:05 pm

2 stops46h 55m

Ko Samui

jue. 3/5

8:15 am-9:47 am

2 stops40h 32m

$2,368

PortlandKo Samui

PDX - USM

PDXUSM

Portland

jue. 12/25

10:40 am-10:35 am

3 stops32h 55m

Ko Samui

vie. 1/2

7:35 pm-4:57 pm

3 stops36h 22m

$4,931

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Portland to Ko Samui

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 day to depart on your flight to Ko Samui?

Our data shows that Friday is the least expensive day to fly to Ko Samui. Tickets to fly out on this day can be as low as $243. Flights from Portland to Ko Samui on a Saturday will generally be more expensive and average around $496. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Ko Samui?

Our data shows that the cheapest Portland to Ko Samui flights are usually those with departure times in the morning. Our users have found flights to Ko Samui in the morning for as low as $168. At noon is when there is more demand to fly to Ko Samui, so prices are often more expensive at around $508 per ticket.

When to book flights from Portland to Ko Samui

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Ko Samui according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Portland to Ko Samui (PDX to USM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Ko Samui

Direct flights	None

There are no direct flights from Portland to Ko Samui. There are no popular flight routes from Portland to Ko Samui.

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How far is Portland to Ko Samui by plane?
There are 7797.0 mi between Portland and Ko Samui. 23h 20m is a normal flight duration for this route.
When did momondo last update prices for flights from Portland Airport to Ko Samui Airport?
Prices for flights from Portland Airport to Ko Samui Airport are updated daily.
How old do you have to be to fly from Portland Airport to Ko Samui Airport?
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 Ko Samui Airport.
What documentation or ID do you need to fly to Ko Samui Airport?
The necessary travel and health documents for your Ko Samui Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Ko Pha Ngan

Ko Tao

Khanom

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Ko Samui?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ko Samui from Portland.

Can I find flights from Portland to Ko Samui with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Portland to Ko Samui flights to just show those with flexible booking policies.

How can momondo help me find flights from Portland to Ko Samui?

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 Ko Samui from Portland.

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

If you are simply researching potential flights to Ko Samui, momondo offers a useful price alert feature which will track prices for flights to Ko Samui from Portland and alert you when they change.