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$924 Find cheap flights from Washington to Koh Samui

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Koh Samui departing on 6/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
qui 6/27
qui 7/4

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Cheapest flight

$924
Flight from Seattle to Koh Samui

FAQs for booking flights from Washington to Koh Samui

  • How does KAYAK find such low prices on flights from Washington to Koh 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 Koh Samui.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Koh 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 Koh 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 Koh 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 Koh 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 Koh Samui from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Prefer to fly non-stop from Washington to Koh Samui?

Find which airlines fly direct from Washington to Ko Samui, which days they fly and book direct flights.

Nonstop departures

Washington to Ko Samui

Monday

Air Astana, Air France, Austrian Airlines, +24 more

Air Astana, Air France, +25 more

Tuesday

Air Astana, Air France, Austrian Airlines, +24 more

Air Astana, Air France, +25 more

Wednesday

Air Astana, Air France, Austrian Airlines, +24 more

Air Astana, Air France, +25 more

Thursday

Air Astana, Air France, Austrian Airlines, +24 more

Air Astana, Air France, +25 more

Friday

Air Astana, Air France, Austrian Airlines, +24 more

Air Astana, Air France, +25 more

Saturday

Air Astana, Air France, Austrian Airlines, +24 more

Air Astana, Air France, +25 more

Sunday

Air Astana, Air France, Austrian Airlines, +24 more

Air Astana, Air France, +25 more

See more direct flights

Nonstop returns

Ko Samui to Washington

Monday

Air Astana, Air France, Austrian Airlines, +24 more

Air Astana, Air France, +25 more

Tuesday

Air Astana, Air France, Austrian Airlines, +24 more

Air Astana, Air France, +25 more

Wednesday

Air Astana, Air France, Austrian Airlines, +24 more

Air Astana, Air France, +25 more

Thursday

Air Astana, Air France, Austrian Airlines, +24 more

Air Astana, Air France, +25 more

Friday

Air Astana, Air France, Austrian Airlines, +24 more

Air Astana, Air France, +25 more

Saturday

Air Astana, Air France, Austrian Airlines, +24 more

Air Astana, Air France, +25 more

Sunday

Air Astana, Air France, Austrian Airlines, +24 more

Air Astana, Air France, +25 more

See more direct flights
See more direct flights

Book cheap flights from Washington to Koh Samui

Recent round-trip flight deals

6/18ter
2 stopsTurkish Airlines
57h 40mSEA-USM
7/3qua
2 stopsTurkish Airlines
62h 20mUSM-SEA
$1,795
6/26qua
2 stopsQatar Airways
33h 15mSEA-USM
7/3qua
2 stopsQatar Airways
34h 40mUSM-SEA
$1,971
7/18qui
2 stops
22h 35mSEA-USM
7/22seg
2 stops
22h 05mUSM-SEA
$2,040
7/19sex
2 stopsQatar Airways
26h 50mSEA-USM
7/22seg
2 stopsQatar Airways
32h 35mUSM-SEA
$2,233
6/26qua
3 stops
30h 05mSEA-USM
7/3qua
3 stops
34h 15mUSM-SEA
$2,253
6/26qua
3 stops
34h 00mSEA-USM
7/3qua
2 stops
33h 25mUSM-SEA
$2,325
7/20sáb
1 stopSingapore Airlines
21h 00mSEA-USM
7/22seg
1 stopSingapore Airlines
37h 45mUSM-SEA
$2,399
6/18ter
1 stopSingapore Airlines
31h 50mSEA-USM
7/3qua
1 stopSingapore Airlines
37h 45mUSM-SEA
$2,720
6/25ter
2 stopsEVA Air
25h 45mSEA-USM
7/3qua
2 stopsEVA Air
23h 45mUSM-SEA
$3,251
6/17seg
2 stopsEVA Air
24h 45mSEA-USM
7/3qua
2 stopsEVA Air
25h 05mUSM-SEA
$5,394

Search by stops

Search by airline

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Recent one-way flight deals

6/3seg
2 stopsTurkish Airlines
35h 50mSEA-USM
$924
6/2dom
2 stopsQatar Airways
27h 40mSEA-USM
$1,058
6/5qua
2 stopsQatar Airways
27h 40mSEA-USM
$1,096
6/3seg
3 stops
30h 05mSEA-USM
$1,339
6/4ter
3 stopsJapan Airlines
36h 20mSEA-USM
$1,615
6/7sex
2 stopsQatar Airways
28h 15mSEA-USM
$1,663
6/4ter
1 stopSingapore Airlines
55h 50mSEA-USM
$1,853
6/2dom
1 stop
21h 00mSEA-USM
$2,290
6/6qui
3 stopsSingapore Airlines
44h 48mSEA-USM
$2,664
6/7sex
3 stopsSingapore Airlines
47h 43mSEA-USM
$2,714

Search by stops

Search by airline

Search by price

Last minute flights from Washington to Koh Samui

Last minute flight, train and bus deals

6/1sáb
multi-stop
28h 15mSEA-USM
7/22seg
multi-stop
19h 15mUSM-SEA
$2,133
6/2dom
multi-stopQatar Airways
26h 50mSEA-USM
7/22seg
multi-stopQatar Airways
29h 15mUSM-SEA
$2,386
6/1sáb
multi-stop
30h 10mSEA-USM
7/22seg
multi-stop
22h 05mUSM-SEA
$2,450
6/2dom
multi-stopQatar Airways
26h 50mSEA-USM
8/22qui
multi-stopQatar Airways
29h 00mUSM-SEA
$2,521
5/31sex
multi-stopQatar Airways
26h 50mSEA-USM
8/22qui
multi-stopQatar Airways
29h 00mUSM-SEA
$2,608
6/1sáb
multi-stop
31h 50mSEA-USM
7/22seg
multi-stop
19h 15mUSM-SEA
$2,673
5/30qui
multi-stop
24h 45mSEA-USM
8/22qui
multi-stop
21h 25mUSM-SEA
$2,746
6/1sáb
multi-stopSingapore Airlines
31h 50mSEA-USM
7/22seg
multi-stopSingapore Airlines
37h 45mUSM-SEA
$2,825
6/2dom
multi-stop
32h 00mSEA-USM
7/22seg
multi-stop
37h 45mUSM-SEA
$3,031
6/2dom
multi-stopSingapore Airlines
35h 00mSEA-USM
7/22seg
multi-stopSingapore Airlines
37h 45mUSM-SEA
$3,091

Search by stops

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Flights to Koh Samui

Destination:

Koh Samui (USM)Thailand

Cabin classes:

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