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Cheap flights from Washington to Ko Samui from $476

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Washington to Ko Samui

Cheap round-trip flights

Enter your travel dates to find the best prices.
Singapore Airlines Logo
8:40 am - 5:10 pmSEA  Seattle/Tacoma Intl-USM Ko Samui
41h 30m1 stop Singapore Changi
Singapore Airlines Logo
6:05 pm - 7:05 amUSM  Ko Samui-SEA Seattle/Tacoma Intl
28h 00m1 stop Singapore Changi
$806Singapore Airlines
Tue, Nov 10 - Tue, Nov 17
Singapore Airlines Logo
8:40 am - 5:10 pmSEA  Seattle/Tacoma Intl-USM Ko Samui
41h 30m1 stop Singapore Changi
Singapore Airlines Logo
12:00 pm - 7:05 amUSM  Ko Samui-SEA Seattle/Tacoma Intl
34h 05m1 stop Singapore Changi
$807Singapore Airlines
Wed, Nov 18 - Tue, Nov 24
Singapore Airlines Logo
8:40 am - 8:00 amSEA  Seattle/Tacoma Intl-USM Ko Samui
32h 20m1 stop Singapore Changi
Singapore Airlines Logo
8:55 am - 7:05 amUSM  Ko Samui-SEA Seattle/Tacoma Intl
37h 10m1 stop Singapore Changi
$807Singapore Airlines
Tue, Mar 2 - Tue, Mar 9
Singapore Airlines Logo
8:40 am - 5:10 pmSEA  Seattle/Tacoma Intl-USM Ko Samui
41h 30m1 stop Singapore Changi
Singapore Airlines Logo
6:05 pm - 7:05 amUSM  Ko Samui-SEA Seattle/Tacoma Intl
28h 00m1 stop Singapore Changi
$832Singapore Airlines
Wed, Dec 2 - Mon, Dec 14
Singapore Airlines Logo
8:40 am - 8:00 amSEA  Seattle/Tacoma Intl-USM Ko Samui
32h 20m1 stop Singapore Changi
Singapore Airlines Logo
6:05 pm - 7:05 amUSM  Ko Samui-SEA Seattle/Tacoma Intl
52h 00m1 stop Singapore Changi
$837Singapore Airlines
Wed, Dec 2 - Wed, Dec 9
Singapore Airlines Logo
8:40 am - 8:00 amSEA  Seattle/Tacoma Intl-USM Ko Samui
32h 20m1 stop Singapore Changi
Singapore Airlines Logo
8:55 am - 8:05 amUSM  Ko Samui-SEA Seattle/Tacoma Intl
37h 10m1 stop Singapore Changi
$862Singapore Airlines
Tue, Mar 9 - Tue, Mar 16
Singapore Airlines Logo
8:40 am - 8:00 amSEA  Seattle/Tacoma Intl-USM Ko Samui
32h 20m1 stop Singapore Changi
Singapore Airlines Logo
6:05 pm - 7:05 amUSM  Ko Samui-SEA Seattle/Tacoma Intl
52h 00m1 stop Singapore Changi
$874Singapore Airlines
Wed, Dec 2 - Wed, Dec 9
Singapore Airlines Logo
8:40 am - 8:00 amSEA  Seattle/Tacoma Intl-USM Ko Samui
32h 20m1 stop Singapore Changi
Singapore Airlines Logo
6:05 pm - 7:05 amUSM  Ko Samui-SEA Seattle/Tacoma Intl
52h 00m1 stop Singapore Changi
$875Singapore Airlines
Wed, Dec 2 - Wed, Dec 9
Multiple Airlines Logo
10:25 am - 7:45 amSEA  Seattle/Tacoma Intl-USM Ko Samui
30h 20m2 stops Hong Kong Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
9:10 pm - 9:45 amUSM  Ko Samui-SEA Seattle/Tacoma Intl
26h 35m2 stops Bangkok Suvarnabhumi Hong Kong Intl
$939Multiple Airlines
Tue, Mar 9 - Tue, Mar 16
Multiple Airlines Logo
10:25 am - 7:45 amSEA  Seattle/Tacoma Intl-USM Ko Samui
30h 20m2 stops Hong Kong Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
11:40 am - 9:45 amUSM  Ko Samui-SEA Seattle/Tacoma Intl
36h 05m1 stop Hong Kong Intl
$941Multiple Airlines
Tue, Mar 9 - Tue, Mar 16

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Singapore Airlines flights from State of Washington to Ko Samui

Our best Singapore Airlines deals on State of Washington to Ko Samui flight tickets
Singapore Airlines
Nov 18
SEA8:40 amSeattle/Tacoma Intl
41h 30m
1 stop
USM5:10 pmKo Samui
Nov 24
USM12:00 pmKo Samui
34h 05m
1 stop
SEA7:05 amSeattle/Tacoma Intl
$807
Singapore Airlines
Dec 2
SEA8:40 amSeattle/Tacoma Intl
41h 30m
1 stop
USM5:10 pmKo Samui
Dec 14
USM6:05 pmKo Samui
28h 00m
1 stop
SEA7:05 amSeattle/Tacoma Intl
$832
Singapore Airlines
Dec 2
SEA8:40 amSeattle/Tacoma Intl
32h 20m
1 stop
USM8:00 amKo Samui
Dec 9
USM6:05 pmKo Samui
52h 00m
1 stop
SEA7:05 amSeattle/Tacoma Intl
$837

Cathay Pacific flights from State of Washington to Ko Samui

Our best Cathay Pacific deals on State of Washington to Ko Samui flight tickets
Cathay Pacific
Oct 12
SEA11:45 amSeattle/Tacoma Intl
30h 30m
2 stops
USM8:15 amKo Samui
Oct 20
USM11:55 amKo Samui
36h 10m
1 stop
SEA10:05 amSeattle/Tacoma Intl
$1,018
Cathay Pacific
Oct 14
SEA11:45 amSeattle/Tacoma Intl
54h 30m
2 stops
USM8:15 amKo Samui
Oct 20
USM11:55 amKo Samui
36h 10m
1 stop
SEA10:05 amSeattle/Tacoma Intl
$1,022
Cathay Pacific
Oct 28
SEA5:04 pmSeattle/Tacoma Intl
36h 31m
2 stops
USM7:35 pmKo Samui
Nov 1
USM11:40 amKo Samui
36h 05m
1 stop
SEA9:45 amSeattle/Tacoma Intl
$1,023

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleKo Samui

SEA Seattle/Tacoma Intl - USM Ko Samui

SEAUSM

Seattle/Tacoma Intl

Tue 11/10

8:40 am-5:10 pm

1 stop41h 30m

Ko Samui

Tue 11/17

6:05 pm-7:05 am

1 stop28h 00m

$806

SeattleKo Samui

SEA Seattle/Tacoma Intl - USM Ko Samui

SEAUSM

Seattle/Tacoma Intl

Wed 11/18

8:40 am-5:10 pm

1 stop41h 30m

Ko Samui

Tue 11/24

12:00 pm-7:05 am

1 stop34h 05m

$807

SeattleKo Samui

SEA Seattle/Tacoma Intl - USM Ko Samui

SEAUSM

Seattle/Tacoma Intl

Tue 3/2

8:40 am-8:00 am

1 stop32h 20m

Ko Samui

Tue 3/9

8:55 am-7:05 am

1 stop37h 10m

$807

SeattleKo Samui

SEA Seattle/Tacoma Intl - USM Ko Samui

SEAUSM

Seattle/Tacoma Intl

Wed 12/2

8:40 am-5:10 pm

1 stop41h 30m

Ko Samui

Mon 12/14

6:05 pm-7:05 am

1 stop28h 00m

$832

SeattleKo Samui

SEA Seattle/Tacoma Intl - USM Ko Samui

SEAUSM

Seattle/Tacoma Intl

Wed 12/2

8:40 am-8:00 am

1 stop32h 20m

Ko Samui

Wed 12/9

6:05 pm-7:05 am

1 stop52h 00m

$837

SeattleKo Samui

SEA Seattle/Tacoma Intl - USM Ko Samui

SEAUSM

Seattle/Tacoma Intl

Tue 3/9

8:40 am-8:00 am

1 stop32h 20m

Ko Samui

Tue 3/16

8:55 am-8:05 am

1 stop37h 10m

$862

SeattleKo Samui

SEA Seattle/Tacoma Intl - USM Ko Samui

SEAUSM

Seattle/Tacoma Intl

Wed 12/2

8:40 am-8:00 am

1 stop32h 20m

Ko Samui

Wed 12/9

6:05 pm-7:05 am

1 stop52h 00m

$874

SeattleKo Samui

SEA Seattle/Tacoma Intl - USM Ko Samui

SEAUSM

Seattle/Tacoma Intl

Wed 12/2

8:40 am-8:00 am

1 stop32h 20m

Ko Samui

Wed 12/9

6:05 pm-7:05 am

1 stop52h 00m

$875
Quickest round-trip

SeattleKo Samui

SEA Seattle/Tacoma Intl - USM Ko Samui

SEAUSM

Seattle/Tacoma Intl

Tue 3/9

10:25 am-7:45 am

2 stops30h 20m

Ko Samui

Tue 3/16

9:10 pm-9:45 am

2 stops26h 35m

$939

SeattleKo Samui

SEA Seattle/Tacoma Intl - USM Ko Samui

SEAUSM

Seattle/Tacoma Intl

Tue 3/9

10:25 am-7:45 am

2 stops30h 20m

Ko Samui

Tue 3/16

11:40 am-9:45 am

1 stop36h 05m

$941

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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How to get the cheapest flight ticket from State of Washington 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

Can stopping save me money on State of Washington to Ko Samui flights?

You could potentially save up to 9% on your flight if you consider stops on a State of Washington to Ko Samui flight.

Cheap State of Washington to Ko Samui flight deals and tips

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

Best Price Found

$476

Fastest flight time

32h 20m

Direct flights

None
The best one-way flight to Ko Samui from State of Washington in the past 72 hours is $476. The best round-trip flight deal from State of Washington to Ko Samui found on momondo in the last 72 hours is $806.
The fastest flight from State of Washington to Ko Samui takes 32h 20m
There are no direct flights from State of Washington to Ko Samui. There are no popular flight routes from State of Washington to Ko Samui.
Search flight deals

Frequently asked questions about flying from Washington to Ko Samui

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

    Prices for flights from Washington to Ko Samui Airport were last updated today.

  • How old do you have to be to fly from Washington to Ko Samui Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington 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 Washington to Ko Samui?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington to Ko Samui. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Ko Samui from Washington on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Washington 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 Washington.

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

Price alerts on flights to Ko Samui from Washington are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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