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

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Find the cheapest flights from Portland to Ko Samui

Round-trip

One-way

Cheap round-trip flights

7:00 pm - 9:20 amPDX-USM

23h 20m2 stops

8:30 pm - 9:15 amUSM-PDX

27h 45m2 stops

$1,052

Find Deal

Thu, Jan 22 - Tue, Jan 27

9:40 am - 7:45 amPDX-USM

31h 05m3 stops

7:10 pm - 4:28 pmUSM-PDX

36h 18m3 stops

$1,099

Find Deal

Thu, Jan 22 - Tue, Jan 27

7:00 pm - 1:05 pmPDX-USM

28h 05m2 stops

9:10 pm - 9:15 amUSM-PDX

27h 05m2 stops

$1,117

Find Deal

Tue, Oct 28 - Sat, Nov 8

7:30 am - 6:15 pmPDX-USM

43h 45m3 stops

4:25 pm - 1:19 pmUSM-PDX

35h 54m2 stops

$1,553Singapore Airlines

Find Deal

Thu, Jan 22 - Tue, Jan 27

1:15 pm - 2:45 pmPDX-USM

35h 30m2 stops

10:55 am - 11:20 amUSM-PDX

38h 25m2 stops

$1,563KLM

Find Deal

Sat, Sep 20 - Tue, Sep 23

7:30 am - 6:15 pmPDX-USM

43h 45m3 stops

4:25 pm - 1:19 pmUSM-PDX

35h 54m2 stops

$1,573Singapore Airlines

Find Deal

Thu, Jan 22 - Tue, Jan 27

11:07 am - 7:20 amPDX-USM

30h 13m3 stops

8:45 am - 8:49 pmUSM-PDX

26h 04m3 stops

$1,677Cathay Pacific

Find Deal

Thu, Oct 9 - Sat, Oct 18

7:00 am - 7:20 amPDX-USM

34h 20m3 stops

10:55 am - 11:24 pmUSM-PDX

26h 29m2 stops

$1,685Cathay Pacific

Find Deal

Thu, Oct 9 - Sat, Oct 18

1:15 pm - 2:45 pmPDX-USM

35h 30m2 stops

10:55 am - 11:20 amUSM-PDX

38h 25m2 stops

$1,709KLM

Find Deal

Sat, Sep 20 - Tue, Sep 23

10:40 am - 10:40 amPDX-USM

33h 00m3 stops

7:10 pm - 4:27 pmUSM-PDX

36h 17m3 stops

$3,692Qatar Airways

Find Deal

Thu, Dec 25 - Fri, Jan 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

USM4:25 pmKo Samui

35h 54m

2 stops

PDX1:19 pmPortland

$1,553

Find similar

Singapore Airlines

Jan 22

PDX7:30 amPortland

43h 45m

3 stops

USM6:15 pmKo Samui

Jan 27

USM4:25 pmKo Samui

35h 54m

2 stops

PDX1:19 pmPortland

$1,573

Find similar

KLM flights from Portland to Ko Samui

Our best KLM deals on Portland to Ko Samui flight tickets

KLM

Sep 20

PDX1:15 pmPortland

35h 30m

2 stops

USM2:45 pmKo Samui

Sep 23

USM10:55 amKo Samui

38h 25m

2 stops

PDX11:20 amPortland

$1,563

Find similar

KLM

Sep 20

PDX1:15 pmPortland

35h 30m

2 stops

USM2:45 pmKo Samui

Sep 23

USM10:55 amKo Samui

38h 25m

2 stops

PDX11:20 amPortland

$1,709

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Thu 1/22

7:00 pm-9:20 am

2 stops23h 20m

Ko Samui

Tue 1/27

8:30 pm-9:15 am

2 stops27h 45m

$1,052

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Thu 1/22

9:40 am-7:45 am

3 stops31h 05m

Ko Samui

Tue 1/27

7:10 pm-4:28 pm

3 stops36h 18m

$1,099

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Tue 10/28

7:00 pm-1:05 pm

2 stops28h 05m

Ko Samui

Sat 11/8

9:10 pm-9:15 am

2 stops27h 05m

$1,117

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Thu 1/22

7:30 am-6:15 pm

3 stops43h 45m

Ko Samui

Tue 1/27

4:25 pm-1:19 pm

2 stops35h 54m

$1,553

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Sat 9/20

1:15 pm-2:45 pm

2 stops35h 30m

Ko Samui

Tue 9/23

10:55 am-11:20 am

2 stops38h 25m

$1,563

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Thu 1/22

7:30 am-6:15 pm

3 stops43h 45m

Ko Samui

Tue 1/27

4:25 pm-1:19 pm

2 stops35h 54m

$1,573

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Thu 10/9

11:07 am-7:20 am

3 stops30h 13m

Ko Samui

Sat 10/18

8:45 am-8:49 pm

3 stops26h 04m

$1,677

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Thu 10/9

7:00 am-7:20 am

3 stops34h 20m

Ko Samui

Sat 10/18

10:55 am-11:24 pm

2 stops26h 29m

$1,685

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Sat 9/20

1:15 pm-2:45 pm

2 stops35h 30m

Ko Samui

Tue 9/23

10:55 am-11:20 am

2 stops38h 25m

$1,709

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Thu 12/25

10:40 am-10:40 am

3 stops33h 00m

Ko Samui

Fri 1/2

7:10 pm-4:27 pm

3 stops36h 17m

$3,692

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

Best Price Found	$1,052
Fastest flight time	23h 20m
Direct flights	None
Airports in Ko Samui	1 airport

The best flight deal from Portland to Ko Samui found on momondo in the last 72 hours is $1,052

The fastest flight from Portland to Ko Samui takes 23h 20m

There are no direct flights from Portland to Ko Samui. Popular non-direct route for this connection is Portland Airport - Ko Samui Airport.

There is 1 airport near Ko Samui: Ko Samui (USM)

Search flight deals

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.