Cheap flights from Dulles Intl (IAD) to Koh Samui (USM)

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How to find the cheapest flight from
Dulles Intl (IAD) to Koh Samui (USM)

All the information you need to plan the best IAD to USM flight in 2022: compare Dulles Intl to Koh Samui flight prices with the expected peak season, weather and rainfall in Koh Samui.
When is the cheapest time to fly from Washington, D.C. Dulles Intl Airport to Koh Samui (IAD - USM)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Dulles Intl Airport to Koh Samui as you normally would.

Cheap flights from Dulles Intl to Koh Samui in July, August 2022

The best prices found for IAD to USM flights for July, August
29 Jul - 18 Aug
$2,456pp
IAD
Washington, D.C. Dulles Intl
Multiple Airlines
   
2 STOPS
USM
Ko Samui
USM
Ko Samui
Multiple Airlines
   
2 STOPS
IAD
Washington, D.C. Dulles Intl
24 Jul - 31 Jul
$2,501pp
IAD
Washington, D.C. Dulles Intl
Multiple Airlines
   
2 STOPS
USM
Ko Samui
USM
Ko Samui
Emirates
   
2 STOPS
IAD
Washington, D.C. Dulles Intl
24 Jul - 31 Jul
$2,541pp
IAD
Washington, D.C. Dulles Intl
Multiple Airlines
   
2 STOPS
USM
Ko Samui
USM
Ko Samui
Multiple Airlines
     
3 STOPS
IAD
Washington, D.C. Dulles Intl

Washington, D.C. Dulles Intl to Koh Samui 2022 flight deals

Cheap flights to Koh Samui from Dulles Intl found for this year
16 Nov - 23 Nov
$1,489pp
IAD
Washington, D.C. Dulles Intl
Multiple Airlines
   
2 STOPS
USM
Ko Samui
USM
Ko Samui
Multiple Airlines
   
2 STOPS
IAD
Washington, D.C. Dulles Intl
16 Nov - 23 Nov
$1,889pp
IAD
Washington, D.C. Dulles Intl
Multiple Airlines
     
3 STOPS
USM
Ko Samui
USM
Ko Samui
Multiple Airlines
   
2 STOPS
IAD
Washington, D.C. Dulles Intl
21 Dec - 28 Dec
$2,185pp
IAD
Washington, D.C. Dulles Intl
Multiple Airlines
     
3 STOPS
USM
Ko Samui
USM
Ko Samui
Multiple Airlines
     
3 STOPS
IAD
Washington, D.C. Dulles Intl

Cheap Emirates flights from Dulles Intl to Koh Samui

17 Jul - 24 Jul
$5,383pp
IAD
Washington, D.C. Dulles Intl
Emirates
     
3 STOPS
USM
Ko Samui
USM
Ko Samui
Emirates
     
3 STOPS
IAD
Washington, D.C. Dulles Intl

Cheap Etihad Airways flights from Dulles Intl to Koh Samui

29 Jul - 18 Aug
$11,008pp
IAD
Washington, D.C. Dulles Intl
Etihad Airways
     
3 STOPS
USM
Ko Samui
USM
Ko Samui
Etihad Airways
     
3 STOPS
IAD
Washington, D.C. Dulles Intl
10 Aug - 21 Aug
$22,346pp
IAD
Washington, D.C. Dulles Intl
Etihad Airways
     
3 STOPS
USM
Ko Samui
USM
Ko Samui
Etihad Airways
     
3 STOPS
IAD
Washington, D.C. Dulles Intl

One-way flights to Ko Samui from Washington, D.C. Dulles Intl

The cheapest one-way flights from Dulles Intl to Koh Samui
4:40 pm - 6:25 am
Qatar Airways
2 Stops
50h 45m
IAD - USM
Qatar Airways
$1,295
oojo
7:00 am - 6:00 am
Multiple Airlines
3 Stops
36h 00m
IAD - USM
Multiple Airlines
$1,159
Kiwi.com

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Dulles Intl</span> to <span class="emphasized">Koh Samui</span> flights.

Flight FAQs

From Dulles Intl to Koh Samui

What airport do you fly into for flights to Koh Samui from Washington, D.C. Dulles Intl?

Located just 2.1 mi from the city center, Ko Samui is the airport most travelers will use when flying to Koh Samui from Washington, D.C. Dulles Intl. Booking flights from Washington, D.C. Dulles Intl to Ko Samui (USM) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Dulles Intl from 1 airline.

Which airlines flying from Washington, D.C. Dulles Intl to Ko Samui have flexible changes due to COVID-19?

One of the carriers operating flights from Washington, D.C. Dulles Intl to Ko Samui that may be offering flexible change policies is Qatar Airways. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from Washington, D.C. Dulles Intl Airport to Koh Samui for under $1,500 on Cheapflights?

Yes, there are multiple flights from Washington, D.C. Dulles Intl Airport to Koh Samui for under $1,500. The cheapest flight booked recently is on Multiple Airlines for just $1,489, but on average you can expect to pay $5,213.

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COVID Restrictions

View COVID Travel Restrictions for Koh Samui, Thailand

Do I need a COVID test to fly to Koh Samui from Dulles Intl?

Information is based on travel restrictions from Washington, D.C. Dulles Intl to Ko Samui

Most visitors from Washington, D.C. Dulles Intl can enter Ko Samui without restrictions.

COVID-19 testing requirements
Visitors from Washington, D.C. Dulles Intl are not required to present a negative COVID-19 PCR test or antigen result upon entering Ko Samui.

Quarantine requirements
Visitors from Washington, D.C. Dulles Intl are not required to quarantine after entering Ko Samui.

Do I need a test to fly back to Dulles Intl from Koh Samui?

Returning to Washington, D.C. Dulles Intl from Ko Samui

COVID-19 testing requirements
Visitors from Ko Samui are not required to present a negative COVID-19 PCR test or antigen result upon entering Washington, D.C. Dulles Intl.

Quarantine requirements
Visitors from Ko Samui are not required to quarantine after entering Washington, D.C. Dulles Intl.

Hide COVID Travel Restrictions for Koh Samui, Thailand
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