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$1,351 Find cheap flights from District of Columbia to Koh Samui

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight to Koh Samui departing on 11/5. 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
Thu 7/11
Thu 7/18

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Cheapest flight

$1,351
Flight from Washington Dulles Airport to Koh Samui

FAQs for booking flights from District of Columbia to Koh Samui

  • How does KAYAK find such low prices on flights from District of Columbia 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 District of Columbia to Koh Samui.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Koh Samui from District of Columbia 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 District of Columbia 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 District of Columbia with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia 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 District of Columbia 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 District of Columbia to Koh Samui?

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

Nonstop departures

District of Columbia to Ko Samui

Monday

Air Astana, Air France, Austrian Airlines, +26 more

Air Astana, Air France, +27 more

Tuesday

Air Astana, Air France, Austrian Airlines, +26 more

Air Astana, Air France, +27 more

Wednesday

Air Astana, Air France, Austrian Airlines, +26 more

Air Astana, Air France, +27 more

Thursday

Air Astana, Air France, Austrian Airlines, +26 more

Air Astana, Air France, +27 more

Friday

Air Astana, Air France, Austrian Airlines, +26 more

Air Astana, Air France, +27 more

Saturday

Air Astana, Air France, Austrian Airlines, +26 more

Air Astana, Air France, +27 more

Sunday

Air Astana, Air France, Austrian Airlines, +26 more

Air Astana, Air France, +27 more

See more direct flights

Nonstop returns

Ko Samui to District of Columbia

Monday

Air Astana, Air France, Austrian Airlines, +26 more

Air Astana, Air France, +27 more

Tuesday

Air Astana, Air France, Austrian Airlines, +26 more

Air Astana, Air France, +27 more

Wednesday

Air Astana, Air France, Austrian Airlines, +26 more

Air Astana, Air France, +27 more

Thursday

Air Astana, Air France, Austrian Airlines, +26 more

Air Astana, Air France, +27 more

Friday

Air Astana, Air France, Austrian Airlines, +26 more

Air Astana, Air France, +27 more

Saturday

Air Astana, Air France, Austrian Airlines, +26 more

Air Astana, Air France, +27 more

Sunday

Air Astana, Air France, Austrian Airlines, +26 more

Air Astana, Air France, +27 more

See more direct flights
See more direct flights

Book cheap flights from District of Columbia to Koh Samui

Recent round-trip flight deals

11/5Tue
2 stops
25h 20mIAD-USM
11/9Sat
2 stops
30h 30mUSM-IAD
$1,351
6/22Sat
2 stopsTurkish Airlines
41h 35mIAD-USM
6/29Sat
2 stopsTurkish Airlines
57h 20mUSM-IAD
$1,839
7/9Tue
2 stopsQatar Airways
26h 05mIAD-USM
7/16Tue
2 stopsQatar Airways
27h 55mUSM-IAD
$1,848
11/5Tue
3 stops
33h 20mDCA-USM
11/9Sat
3 stops
31h 29mUSM-DCA
$1,857
11/5Tue
3 stops
27h 55mIAD-USM
11/9Sat
2 stops
26h 20mUSM-IAD
$2,108
7/9Tue
3 stopsQatar Airways
30h 50mDCA-USM
7/16Tue
3 stopsQatar Airways
32h 36mUSM-DCA
$2,338
7/9Tue
2 stopsCathay Pacific
43h 04mDCA-USM
7/16Tue
2 stopsCathay Pacific
57h 21mUSM-DCA
$2,507
6/22Sat
2 stopsCathay Pacific
43h 06mDCA-USM
6/29Sat
2 stopsCathay Pacific
40h 29mUSM-DCA
$3,022
6/22Sat
3 stopsJapan Airlines
35h 45mDCA-USM
6/29Sat
3 stopsJapan Airlines
37h 49mUSM-DCA
$4,073
6/22Sat
3 stopsSingapore Airlines
45h 50mDCA-USM
6/29Sat
2 stopsSingapore Airlines
42h 29mUSM-DCA
$4,358

Search by stops

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One-way flight deals

multi-stopMultiple Airlines
8508 miLAX-USM
multi-stopMultiple Airlines
8941 miJFK-USM

Search by stops

Flights to Koh Samui

Destination:

Koh Samui (USM)Thailand

Cabin classes:

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