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$1,512 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 7/8. 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
Fri 5/24
Fri 5/31

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In the last 7 days travelers have searched 45,119,101 times on KAYAK, and here is why:

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Cheapest flight

$1,512
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, +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 District of Columbia

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 District of Columbia to Koh Samui

Recent round-trip flight deals

7/8Mon
2 stops
35h 35mIAD-USM
7/24Wed
2 stops
60h 15mUSM-IAD
$1,512
6/11Tue
2 stopsTurkish Airlines
30h 20mIAD-USM
7/9Tue
2 stopsTurkish Airlines
35h 40mUSM-IAD
$1,767
6/11Tue
2 stopsCathay Pacific
36h 05mDCA-USM
7/9Tue
2 stopsCathay Pacific
33h 21mUSM-DCA
$1,984
7/8Mon
2 stops
30h 30mIAD-USM
7/24Wed
3 stops
33h 45mUSM-IAD
$2,193
7/8Mon
3 stops
34h 20mIAD-USM
7/24Wed
3 stops
35h 20mUSM-IAD
$2,197
6/11Tue
3 stops
40h 11mDCA-USM
7/9Tue
3 stops
37h 49mUSM-DCA
$2,413
6/11Tue
3 stops
35h 55mIAD-USM
7/9Tue
2 stops
28h 15mUSM-IAD
$2,420
6/11Tue
3 stopsCathay Pacific
32h 40mDCA-USM
7/9Tue
2 stopsCathay Pacific
33h 21mUSM-DCA
$2,706
6/11Tue
3 stopsSingapore Airlines
51h 15mIAD-USM
7/9Tue
3 stopsSingapore Airlines
48h 15mUSM-IAD
$3,510

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Flights to Koh Samui

Destination:

Koh Samui (USM)Thailand

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