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Cheap flights from Oregon to Ko Samui from $1,439

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Oregon to Ko Samui departing on 8/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Oregon to Ko Samui

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:22 pm - 1:45 pm
PDX
-
USM
28h 23m
3 stops
Multiple Airlines Logo
1:50 pm - 10:01 pm
USM
-
PDX
22h 11m
3 stops
$1,439Multiple Airlines
Fri, Aug 28 - Sat, Sep 12
Multiple Airlines Logo
3:43 pm - 7:40 pm
PDX
-
USM
37h 57m
2 stops
Multiple Airlines Logo
11:55 am - 8:50 pm
USM
-
PDX
46h 55m
2 stops
$1,485Multiple Airlines
Fri, Aug 28 - Sat, Sep 12
Multiple Airlines Logo
7:45 pm - 3:10 pm
PDX
-
USM
29h 25m
2 stops
Multiple Airlines Logo
7:10 pm - 9:31 am
USM
-
PDX
28h 21m
2 stops
$1,688Multiple Airlines
Wed, Jul 22 - Thu, Aug 6
Multiple Airlines Logo
7:45 pm - 3:10 pm
PDX
-
USM
29h 25m
2 stops
Multiple Airlines Logo
6:55 pm - 9:31 am
USM
-
PDX
28h 36m
2 stops
$1,725Multiple Airlines
Wed, Jul 22 - Thu, Aug 6
Multiple Airlines Logo
7:45 pm - 12:45 pm
PDX
-
USM
27h 00m
3 stops
Multiple Airlines Logo
4:25 pm - 9:31 am
USM
-
PDX
31h 06m
2 stops
$1,816Multiple Airlines
Fri, Aug 28 - Sat, Sep 12
Multiple Airlines Logo
7:45 pm - 9:20 am
PDX
-
USM
23h 35m
2 stops
Multiple Airlines Logo
8:50 pm - 9:31 am
USM
-
PDX
26h 41m
2 stops
$1,837Multiple Airlines
Wed, Jul 22 - Thu, Aug 6
Multiple Airlines Logo
5:15 am - 9:10 pm
PDX
-
USM
25h 55m
2 stops
Multiple Airlines Logo
1:30 pm - 12:50 am
USM
-
PDX
25h 20m
2 stops
$1,875Multiple Airlines
Thu, May 28 - Tue, Jul 7
Multiple Airlines Logo
5:37 pm - 7:40 pm
PDX
-
USM
36h 03m
2 stops
Multiple Airlines Logo
8:10 am - 7:11 pm
USM
-
PDX
25h 01m
3 stops
$1,915Multiple Airlines
Wed, Jul 22 - Thu, Aug 6
Multiple Airlines Logo
7:45 pm - 6:15 pm
PDX
-
USM
32h 30m
2 stops
Multiple Airlines Logo
8:35 pm - 9:31 am
USM
-
PDX
26h 56m
2 stops
$1,923Multiple Airlines
Sun, Jun 28 - Sun, Jul 5
Multiple Airlines Logo
3:30 pm - 7:30 am
PDX
-
USM
50h 00m
3 stops
Multiple Airlines Logo
7:45 pm - 2:48 pm
USM
-
PDX
33h 03m
3 stops
$1,978Multiple Airlines
Sun, Jun 28 - Sun, Jul 5

British Airways flights from Oregon to Ko Samui

Our best British Airways deals on Oregon to Ko Samui flight tickets
British Airways
May 25
PDX7:30 pmPortland
32h 45m
2 stops
USM6:15 pmKo Samui
Jul 8
USM4:25 pmKo Samui
39h 15m
2 stops
PDX5:40 pmPortland
$2,493
British Airways
May 29
PDX7:30 pmPortland
35h 40m
2 stops
USM9:10 pmKo Samui
Jul 8
USM1:30 pmKo Samui
42h 10m
2 stops
PDX5:40 pmPortland
$2,548
British Airways
May 30
PDX7:30 pmPortland
32h 45m
2 stops
USM6:15 pmKo Samui
Jul 9
USM1:30 pmKo Samui
42h 10m
2 stops
PDX5:40 pmPortland
$2,603

Cathay Pacific flights from Oregon to Ko Samui

Our best Cathay Pacific deals on Oregon to Ko Samui flight tickets
Cathay Pacific
May 29
PDX9:46 pmPortland
31h 54m
2 stops
USM7:40 pmKo Samui
Jul 7
USM11:55 amKo Samui
42h 52m
2 stops
PDX4:47 pmPortland
$4,629
Cathay Pacific
May 29
PDX9:46 pmPortland
31h 54m
2 stops
USM7:40 pmKo Samui
Jul 10
USM11:55 amKo Samui
46h 53m
2 stops
PDX8:48 pmPortland
$4,860
Cathay Pacific
May 29
PDX10:29 amPortland
43h 11m
2 stops
USM7:40 pmKo Samui
Jul 6
USM11:55 amKo Samui
26h 01m
2 stops
PDX11:56 pmPortland
$5,041

momondo Fare Finder

 
Customize your flight search to find flights from Oregon to Ko Samui that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 18, 2026.
Use the filters below to find and compare flights from Oregon to Ko Samui that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Fri 8/28

7:22 pm-1:45 pm

3 stops28h 23m

Ko Samui

Sat 9/12

1:50 pm-10:01 pm

3 stops22h 11m

$1,439

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Fri 8/28

3:43 pm-7:40 pm

2 stops37h 57m

Ko Samui

Sat 9/12

11:55 am-8:50 pm

2 stops46h 55m

$1,485

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Wed 7/22

7:45 pm-3:10 pm

2 stops29h 25m

Ko Samui

Thu 8/6

7:10 pm-9:31 am

2 stops28h 21m

$1,688

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Wed 7/22

7:45 pm-3:10 pm

2 stops29h 25m

Ko Samui

Thu 8/6

6:55 pm-9:31 am

2 stops28h 36m

$1,725

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Fri 8/28

7:45 pm-12:45 pm

3 stops27h 00m

Ko Samui

Sat 9/12

4:25 pm-9:31 am

2 stops31h 06m

$1,816
Quickest round-trip

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Wed 7/22

7:45 pm-9:20 am

2 stops23h 35m

Ko Samui

Thu 8/6

8:50 pm-9:31 am

2 stops26h 41m

$1,837

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Thu 5/28

5:15 am-9:10 pm

2 stops25h 55m

Ko Samui

Tue 7/7

1:30 pm-12:50 am

2 stops25h 20m

$1,875

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Wed 7/22

5:37 pm-7:40 pm

2 stops36h 03m

Ko Samui

Thu 8/6

8:10 am-7:11 pm

3 stops25h 01m

$1,915

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Sun 6/28

7:45 pm-6:15 pm

2 stops32h 30m

Ko Samui

Sun 7/5

8:35 pm-9:31 am

2 stops26h 56m

$1,923

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Sun 6/28

3:30 pm-7:30 am

3 stops50h 00m

Ko Samui

Sun 7/5

7:45 pm-2:48 pm

3 stops33h 03m

$1,978

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Oregon to Ko Samui flight deals and tips

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

Fastest flight time

27h 05m

Direct flights

None
The fastest flight from Oregon to Ko Samui takes 27h 05m
There are no direct flights from Oregon to Ko Samui. There are no popular flight routes from Oregon to Ko Samui.
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Frequently asked questions about flying from Oregon to Ko Samui

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

    Prices for flights from Oregon to Ko Samui Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Oregon 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 Oregon to Ko Samui Airport.

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

    The travel and health documents you'll need for your trip to Ko Samui Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ko Samui Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Oregon to Ko Samui

  • How do I get Price Alerts for flights from Oregon to Ko Samui?

    Confirm your travel details to search for the latest offers for flights from Oregon to Ko Samui. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Oregon to Ko Samui with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Traveling to a place near Ko Samui?

Book flights to Ko Samui if you plan to visit one of these locations
Ko Pha Ngan
Ko Tao
Khanom

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Oregon to Ko Samui. Millions of users trust and use momondo every year so you are in good hands.

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

Flights from Oregon to Ko Samui with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Oregon 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 Oregon.

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

Yes momondo offers price alerts on flights to Ko Samui from Oregon. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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