Latest deals
Insights
FAQs
Price Alerts

Cheap flights from Oregon to Ko Samui from $1,160

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 9/10. 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

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
2:00 pm - 10:01 pm
USM
-
PDX
22h 01m
3 stops
$1,160Multiple Airlines
Do, Sep 10 - Do, Sep 17
Multiple Airlines Logo
6:54 am - 9:10 pm
PDX
-
USM
24h 16m
2 stops
Multiple Airlines Logo
1:30 pm - 10:12 am
USM
-
PDX
34h 42m
2 stops
$1,346Multiple Airlines
Do, Sep 10 - Do, Sep 17
Multiple Airlines Logo
7:00 am - 7:30 am
PDX
-
USM
34h 30m
3 stops
Multiple Airlines Logo
5:50 pm - 9:31 am
USM
-
PDX
29h 41m
2 stops
$1,395Multiple Airlines
Do, Sep 10 - Do, Sep 17
Cathay Pacific Logo
10:30 am - 7:40 pm
PDX
-
USM
43h 10m
2 stops
Cathay Pacific Logo
11:55 am - 11:58 pm
USM
-
PDX
26h 03m
2 stops
$1,654Cathay Pacific
So, Apr 12 - So, Apr 19
Multiple Airlines Logo
3:30 pm - 6:15 pm
PDX
-
USM
36h 45m
2 stops
Multiple Airlines Logo
7:45 pm - 9:31 am
USM
-
PDX
27h 46m
2 stops
$1,715Multiple Airlines
So, Jun 21 - So, Jun 28
Multiple Airlines Logo
3:30 pm - 6:15 pm
PDX
-
USM
36h 45m
2 stops
Multiple Airlines Logo
8:35 pm - 9:31 am
USM
-
PDX
26h 56m
2 stops
$1,720Multiple Airlines
So, Jun 21 - So, Jun 28
Multiple Airlines Logo
7:45 pm - 1:45 pm
PDX
-
USM
28h 00m
2 stops
Multiple Airlines Logo
4:25 pm - 9:31 am
USM
-
PDX
31h 06m
2 stops
$1,778Multiple Airlines
Mo, Jun 15 - Mo, Jun 22
Multiple Airlines Logo
3:30 pm - 6:15 pm
PDX
-
USM
36h 45m
2 stops
Multiple Airlines Logo
6:55 pm - 9:31 am
USM
-
PDX
28h 36m
2 stops
$1,781Multiple Airlines
So, Jun 21 - So, Jun 28
Multiple Airlines Logo
3:30 pm - 12:45 pm
PDX
-
USM
31h 15m
3 stops
Multiple Airlines Logo
8:35 pm - 9:31 am
USM
-
PDX
26h 56m
2 stops
$1,784Multiple Airlines
So, Jun 21 - So, Jun 28
Multiple Airlines Logo
7:45 pm - 1:10 pm
PDX
-
USM
27h 25m
2 stops
Multiple Airlines Logo
6:55 pm - 9:31 am
USM
-
PDX
28h 36m
2 stops
$1,802Multiple Airlines
So, Jun 28 - So, Jul 19

Cathay Pacific flights from Oregon to Ko Samui

Our best Cathay Pacific deals on Oregon to Ko Samui flight tickets
Cathay Pacific
Apr 12
PDX10:30 amPortland
43h 10m
2 stops
USM7:40 pmKo Samui
Apr 19
USM11:55 amKo Samui
26h 03m
2 stops
PDX11:58 pmPortland
$1,654
Cathay Pacific
Sep 6
PDX7:50 pmPortland
33h 50m
2 stops
USM7:40 pmKo Samui
Sep 10
USM11:55 amKo Samui
39h 56m
2 stops
PDX1:51 pmPortland
$4,238

British Airways flights from Oregon to Ko Samui

Our best British Airways deals on Oregon to Ko Samui flight tickets
British Airways
Sep 12
PDX7:30 pmPortland
35h 40m
2 stops
USM9:10 pmKo Samui
Sep 16
USM4:25 pmKo Samui
39h 15m
2 stops
PDX5:40 pmPortland
$2,664
British Airways
Sep 6
PDX7:30 pmPortland
56h 45m
2 stops
USM6:15 pmKo Samui
Sep 10
USM4:25 pmKo Samui
39h 15m
2 stops
PDX5:40 pmPortland
$13,983
British Airways
Sep 6
PDX7:30 pmPortland
32h 45m
2 stops
USM6:15 pmKo Samui
Sep 10
USM4:25 pmKo Samui
39h 15m
2 stops
PDX5:40 pmPortland
$13,984

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 März 30, 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
Quickest round-trip

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Do 9/10

7:22 pm-1:45 pm

3 stops28h 23m

Ko Samui

Do 9/17

2:00 pm-10:01 pm

3 stops22h 01m

$1,160

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Do 9/10

6:54 am-9:10 pm

2 stops24h 16m

Ko Samui

Do 9/17

1:30 pm-10:12 am

2 stops34h 42m

$1,346

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Do 9/10

7:00 am-7:30 am

3 stops34h 30m

Ko Samui

Do 9/17

5:50 pm-9:31 am

2 stops29h 41m

$1,395

PortlandKo Samui

PDX - USM

PDXUSM

Portland

So 4/12

10:30 am-7:40 pm

2 stops43h 10m

Ko Samui

So 4/19

11:55 am-11:58 pm

2 stops26h 03m

$1,654

PortlandKo Samui

PDX - USM

PDXUSM

Portland

So 6/21

3:30 pm-6:15 pm

2 stops36h 45m

Ko Samui

So 6/28

7:45 pm-9:31 am

2 stops27h 46m

$1,715

PortlandKo Samui

PDX - USM

PDXUSM

Portland

So 6/21

3:30 pm-6:15 pm

2 stops36h 45m

Ko Samui

So 6/28

8:35 pm-9:31 am

2 stops26h 56m

$1,720

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Mo 6/15

7:45 pm-1:45 pm

2 stops28h 00m

Ko Samui

Mo 6/22

4:25 pm-9:31 am

2 stops31h 06m

$1,778

PortlandKo Samui

PDX - USM

PDXUSM

Portland

So 6/21

3:30 pm-6:15 pm

2 stops36h 45m

Ko Samui

So 6/28

6:55 pm-9:31 am

2 stops28h 36m

$1,781

PortlandKo Samui

PDX - USM

PDXUSM

Portland

So 6/21

3:30 pm-12:45 pm

3 stops31h 15m

Ko Samui

So 6/28

8:35 pm-9:31 am

2 stops26h 56m

$1,784

PortlandKo Samui

PDX - USM

PDXUSM

Portland

So 6/28

7:45 pm-1:10 pm

2 stops27h 25m

Ko Samui

So 7/19

6:55 pm-9:31 am

2 stops28h 36m

$1,802

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Ko Samui from

How to get the cheapest flight ticket from Oregon 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 Oregon 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 Oregon 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.

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

28h 00m

Direct flights

None
The fastest flight from Oregon to Ko Samui takes 28h 00m
There are no direct flights from Oregon to Ko Samui. There are no popular flight routes from Oregon to Ko Samui.
Search flight deals

  • 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.

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.

An easier way to manage your Ko Samui trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mi 4/29
Mi 5/6
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Thailand