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>

$844 CHEAP FLIGHTS from Washington to Ko Samui

USM

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Flight Deals

Cheap Flights from Washington to Ko Samui

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington to Ko Samui that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

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

Round-trip

One-way

Last minute

Recent round-trip flight deals from Washington to Ko Samui

Thu, Oct 30 - Thu, Nov 6

9:45 am - 8:00 amSEA-USM

32h 15m1 stop

8:55 am - 7:10 amUSM-SEA

37h 15m1 stop

$844Singapore Airlines

Find Deal

Thu, Oct 30 - Thu, Nov 6

11:50 pm - 3:35 pmSEA-USM

25h 45m2 stops

10:00 am - 5:40 pmUSM-SEA

22h 40m2 stops

$995EVA Air

Find Deal

Wed, Oct 29 - Thu, Nov 6

1:10 am - 2:55 pmSEA-USM

23h 45m2 stops

10:00 am - 5:40 pmUSM-SEA

22h 40m2 stops

$1,018EVA Air

Find Deal

Sun, Oct 19 - Wed, Oct 22

10:15 am - 6:30 pmSEA-USM

42h 15m1 stop

8:45 am - 8:45 amUSM-SEA

38h 00m1 stop

$1,049Singapore Airlines

Find Deal

Thu, Jan 22 - Tue, Jan 27

3:15 pm - 9:20 amPDX-USM

27h 05m2 stops

9:10 pm - 9:15 amUSM-PDX

27h 05m2 stops

$1,073Multiple Airlines

Find Deal

Sat, Oct 18 - Wed, Oct 22

1:30 am - 2:45 pmSEA-USM

23h 15m2 stops

9:15 am - 7:30 pmUSM-SEA

24h 15m2 stops

$1,074EVA Air

Find Deal

Thu, Jan 22 - Tue, Jan 27

3:15 pm - 12:50 pmPDX-USM

30h 35m2 stops

7:10 pm - 9:15 amUSM-PDX

29h 05m2 stops

$1,084Multiple Airlines

Find Deal

Thu, Jan 22 - Tue, Jan 27

7:00 pm - 10:35 amPDX-USM

24h 35m2 stops

7:00 pm - 9:15 amUSM-PDX

29h 15m2 stops

$1,089Multiple Airlines

Find Deal

Sun, Oct 19 - Wed, Oct 22

7:10 pm - 2:45 pmSEA-USM

29h 35m2 stops

8:50 pm - 5:15 pmUSM-SEA

34h 25m2 stops

$1,357Turkish Airlines

Find Deal

Thu, Dec 25 - Fri, Jan 2

10:40 am - 11:50 amPDX-USM

34h 10m3 stops

7:35 pm - 4:57 pmUSM-PDX

36h 22m3 stops

$4,931Qatar Airways

Find Deal

Cheapest round-trip

$844

Singapore Airlines

Thu 10/30Thu 11/6

SEA - USM • 1 stop

Cheapest one-way

Multiple Airlines

Tue 9/16

LAX - USM • multi-stop

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Ko Samui!

Useful Info

Low season	November
High season	June
Cheapest flight	$844

Best time to beat the crowds with an average 24% drop in price.

Most popular time to fly with an average 34% increase in price.

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)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

USM

$844 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

Recent last minute flight deals from Washington to Ko Samui

Everything you should know

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