How does KAYAK find such low prices on flights from Washington to Ko Samui?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington to Ko Samui. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Ko Samui?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ko Samui from Washington is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Washington to Ko Samui?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ko Samui with an airline and back to Washington with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington to Ko Samui?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ko Samui from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$568 CHEAP FLIGHTS from Washington to Ko Samui

USM

KAYAK searches hundreds of travel sites at once for deals on flights to Ko Samui

...and more

Travelers love KAYAK

41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals

Cheap Flights from Washington to Ko Samui

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Recent round-trip flight deals from Washington to Ko Samui

Tue, Sep 1 - Sat, Sep 5

10:15 am - 7:45 am

SEA

USM

31h 30m

1 stop

8:40 am - 8:45 am

USM

SEA

38h 05m

1 stop

$688Singapore Airlines

Tue, Sep 1 - Mon, Sep 7

10:15 am - 7:45 am

SEA

USM

31h 30m

1 stop

8:40 am - 8:45 am

USM

SEA

38h 05m

1 stop

$786Singapore Airlines

Tue, Sep 1 - Sat, Sep 5

11:10 pm - 4:50 pm

SEA

USM

27h 40m

2 stops

8:10 am - 8:05 pm

USM

SEA

49h 55m

2 stops

$842Multiple Airlines

Tue, Sep 1 - Mon, Sep 7

10:15 am - 7:45 am

SEA

USM

31h 30m

1 stop

6:25 pm - 8:45 am

USM

SEA

28h 20m

2 stops

$945Multiple Airlines

Sun, Aug 30 - Sun, Sep 6

2:10 am - 1:45 pm

SEA

USM

21h 35m

2 stops

9:00 pm - 7:40 pm

USM

SEA

36h 40m

2 stops

$946EVA Air

Sun, Aug 30 - Sun, Sep 6

2:10 am - 1:45 pm

SEA

USM

21h 35m

2 stops

9:00 pm - 7:40 pm

USM

SEA

36h 40m

2 stops

$958EVA Air

Sun, Apr 26 - Mon, May 4

1:30 am - 3:45 pm

SEA

USM

24h 15m

2 stops

8:45 am - 7:30 pm

USM

SEA

24h 45m

2 stops

$1,004EVA Air

Tue, Apr 28 - Wed, May 6

1:30 am - 8:50 pm

SEA

USM

29h 20m

2 stops

2:00 pm - 7:30 pm

USM

SEA

19h 30m

2 stops

$1,025EVA Air

Sun, Apr 12 - Sun, Apr 19

10:30 am - 7:40 pm

PDX

USM

43h 10m

2 stops

11:55 am - 9:50 am

USM

PDX

35h 55m

2 stops

$1,539Cathay Pacific

Sun, Apr 12 - Sun, Apr 19

10:30 am - 7:40 pm

PDX

USM

43h 10m

2 stops

11:55 am - 4:30 pm

USM

PDX

42h 35m

2 stops

$1,563Cathay Pacific

Useful Info

Cheapest flight	$568

Flight from Seattle to Ko Samui

How does KAYAK find such low prices on flights from Washington to Ko Samui?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington to Ko Samui.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Ko Samui?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ko Samui from Washington is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Washington to Ko Samui?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ko Samui with an airline and back to Washington with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington to Ko Samui?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ko Samui from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to Ko Samui

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Information on the airport you'll fly into in Ko Samui

Ko Samui (USM)

USM

$547 Find Cheap Flights from Washington to Ko Samui

KAYAK searches hundreds of travel sites at once for deals on flights to Ko Samui

Cheap Flights from Washington to Ko Samui

Recent round-trip flight deals from Washington to Ko Samui

Recent one-way flight deals from Washington to Ko Samui

Good to know

FAQs for booking flights from Washington to Ko Samui

How does KAYAK find such low prices on flights from Washington to Ko Samui?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington to Ko Samui.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Ko Samui?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ko Samui from Washington is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Washington to Ko Samui?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ko Samui with an airline and back to Washington with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington to Ko Samui?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ko Samui from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to Ko Samui

Information on the airport you'll fly into in Ko Samui

Cabin class types available on flights to Washington

Complete your trip to Ko Samui with a hotel stay or car rental

Find direct flights for Ko Samui

Flights to other popular destinations

Flights from domestic origins to Ko Samui

Choose which airport to fly into in Ko Samui