In terms of precipitation, rainfall in Ko Samui ranges from 2.3 - 19.3 inches per month. November is typically the wettest month, when rainfall can reach 19.3 in. February is typically the driest time to visit Ko Samui when rainfall is around 2.3 in.

If weather is an important factor for your trip to Ko Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).

What airport do you fly into for flights to Ko Samui from Oregon?

If you book a flight to Ko Samui from Oregon, you will be flying to Ko Samui, which is the city’s only airport. Ko Samui (USM) is located 2.1 mi from the center of Ko Samui.

Can I find deals for flights from Oregon to Ko Samui that include hotel bookings?

Yes. In addition to deals on Oregon to Ko Samui flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Oregon to Ko Samui?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Oregon to Ko Samui.

Can I find deals for business class flights from Oregon to Ko Samui?

Yes. Cheapflights offers flight deals from Oregon to Ko Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$1,189+ Flights from Oregon to Ko Samui

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Cheap flight deals from Oregon to Ko Samui

Cheapest flights from Oregon to Ko Samui
Explore the most affordable flight options available from Oregon to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 15, 2025.

jue. 12/257:00 pmPDX - USM

2 stops46h 00mMultiple Airlines

vie. 1/29:30 pmUSM - PDX

2 stops26h 45mMultiple Airlines

Deal found 12/15

$3,483

Best flights from Oregon to Ko Samui
Discover carefully curated flight deals from Oregon to Ko Samui that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated diciembre 15, 2025.

jue. 1/225:35 pmPDX - USM

3 stops31h 00mMultiple Airlines

mar. 1/278:30 pmUSM - PDX

3 stops41h 16mMultiple Airlines

Deal found 12/13

$1,189

jue. 1/229:30 pmPDX - USM

2 stops55h 05mCathay Pacific

mar. 1/2711:40 amUSM - PDX

2 stops41h 01mCathay Pacific

Deal found 12/12

$1,390

sáb. 3/75:40 pmPDX - USM

3 stops30h 15mMultiple Airlines

vie. 3/139:10 pmUSM - PDX

3 stops39h 31mMultiple Airlines

Deal found 12/13

$1,204

mié. 2/47:05 pmPDX - USM

2 stops32h 10mMultiple Airlines

mié. 2/184:25 pmUSM - PDX

2 stops31h 50mMultiple Airlines

Deal found 12/13

$1,221

dom. 2/19:50 amPDX - USM

2 stops41h 25mMultiple Airlines

sáb. 2/147:45 pmUSM - PDX

2 stops37h 45mMultiple Airlines

Deal found 12/13

$1,221

Last-minute flights from Oregon to Ko Samui
Discover last-minute flight deals from Oregon to Ko Samui. Data last updated diciembre 15, 2025 and is based on user searches.

jue. 1/225:35 pmPDX - USM

3 stops31h 00mMultiple Airlines

mar. 1/278:30 pmUSM - PDX

3 stops41h 16mMultiple Airlines

Deal found 12/14

$1,189

jue. 1/229:30 pmPDX - USM

2 stops55h 05mCathay Pacific

mar. 1/2711:40 amUSM - PDX

2 stops36h 55mCathay Pacific

Deal found 12/14

$1,390

Find flight deals from Oregon to Ko Samui

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Round-trip from	$1,189 (KAYAK)

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From Oregon to Ko Samui

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Fly from

Fly to

Route

Depart

Return

Price

PortlandKo Samui

PDX - USM

PDXUSM

Portland

jue. 1/22

5:35 pm-3:35 pm

3 stops31h 00m

Ko Samui

mar. 1/27

8:30 pm-10:46 pm

3 stops41h 16m

$1,189

PortlandKo Samui

PDX - USM

PDXUSM

Portland

sáb. 3/7

5:40 pm-2:55 pm

3 stops30h 15m

Ko Samui

vie. 3/13

9:10 pm-10:41 pm

3 stops39h 31m

$1,204

PortlandKo Samui

PDX - USM

PDXUSM

Portland

mié. 2/4

7:05 pm-6:15 pm

2 stops32h 10m

Ko Samui

mié. 2/18

4:25 pm-9:15 am

2 stops31h 50m

$1,221

PortlandKo Samui

PDX - USM

PDXUSM

Portland

dom. 2/1

9:50 am-6:15 pm

2 stops41h 25m

Ko Samui

sáb. 2/14

7:45 pm-6:30 pm

2 stops37h 45m

$1,221

PortlandKo Samui

PDX - USM

PDXUSM

Portland

jue. 1/22

9:30 pm-7:35 pm

2 stops55h 05m

Ko Samui

mar. 1/27

11:40 am-1:41 pm

2 stops41h 01m

$1,390

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Best time to book a flight from Oregon to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Oregon with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Oregon to Ko Samui

What is the cheapest time of day to fly from OR to USM?

Unlike at noon, when flights are generally more expensive, you can save up to 66% on flights from Oregon to Ko Samui by exploring options for tickets in the morning.

What is the cheapest day to fly from Oregon to Ko Samui?

Travelers seeking maximum savings on their Oregon to Ko Samui flight should consider departing on Tuesday at noon when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

What airport do you fly into for flights to Ko Samui from Oregon?
If you book a flight to Ko Samui from Oregon, you will be flying to Ko Samui, which is the city’s only airport. Ko Samui (USM) is located 2.1 mi from the center of Ko Samui.
Can I find deals for flights from Oregon to Ko Samui that include hotel bookings?
Yes. In addition to deals on Oregon to Ko Samui flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Oregon to Ko Samui?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Oregon to Ko Samui.
Can I find deals for business class flights from Oregon to Ko Samui?
Yes. Cheapflights offers flight deals from Oregon to Ko Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Ko Tao

Ko Pha Ngan

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$1,189+ Cheap flights from Oregon to Ko Samui (USM)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/22. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Oregon to Ko Samui with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Oregon to Ko Samui

Cheapest flights from Oregon to Ko SamuiExplore the most affordable flight options available from Oregon to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 15, 2025.

Explore the most affordable flight options available from Oregon to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 15, 2025.

Find flight deals from Oregon to Ko Samui

Keep the following information in mind while searching for Oregon to Ko Samui flight deals. Data was last updated diciembre 15, 2025.

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Round-trip from

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Use the filters below to find and compare flights from Oregon to Ko Samui that are best for you.

Best time to book a flight from Oregon to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Oregon with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Oregon to Ko Samui

What is the cheapest time of day to fly from OR to USM?

Find hourly flight availability from Oregon to Ko Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated diciembre 15, 2025.

What is the cheapest day to fly from Oregon to Ko Samui?

Use this chart to determine the cheapest time to fly round-trip from Oregon to Ko Samui. Price data was last updated on March 30, 2025.

Related info for your journey

Find useful and relevant information for your journey from Oregon to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Ko Samui from Oregon?

Can I find deals for flights from Oregon to Ko Samui that include hotel bookings?

How can I find direct flights from Oregon to Ko Samui?

Can I find deals for business class flights from Oregon to Ko Samui?

Traveling to a place near Ko Samui?

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Alternative routes for Oregon to Ko Samui

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Cheapest flights from Oregon to Ko Samui
Explore the most affordable flight options available from Oregon to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 15, 2025.