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Koh Samui

$1,176+ Cheap flights from Dulles Intl (IAD) to Koh Samui (USM)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — USM
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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Cheap flight deals from Dulles Intl to Koh Samui

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Koh Samui (USM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 20, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,415
(SmartFares)
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Ko Samui flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Ko Samui flights.
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From Washington, D.C. Dulles Intl to Ko Samui
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Find flight deals from Dulles Intl to Koh Samui

Cheapest flights from Dulles Intl to Koh Samui
Explore the most affordable flight options available from Dulles Intl to Koh Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.

This SmartFares deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/32:00 pmIAD - USM
2 stops40h 15mMultiple Airlines
Thu 12/127:10 pmUSM - IAD
2 stops29h 05mMultiple Airlines
Deal found 11/19$1,415
This FlightHub deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/192:00 pmIAD - USM
2 stops29h 40mTurkish Airlines
Thu 12/267:10 pmUSM - IAD
2 stops36h 20mTurkish Airlines
Deal found 11/19$2,927

Find flights from Dulles Intl to Koh Samui within your budget

Customize your flight search to find flights from Dulles Intl to Koh Samui that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Washington, D.C.Koh Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Thu 3/20

10:25 pm-6:40 pm

2 stops33h 15m

Ko Samui

Wed 3/26

6:15 pm-1:15 pm

2 stops30h 00m

$1,347

Washington, D.C.Koh Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Tue 12/3

2:00 pm-6:15 pm

2 stops40h 15m

Ko Samui

Thu 12/12

7:10 pm-12:15 pm

2 stops29h 05m

$1,415

Washington, D.C.Koh Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Fri 5/9

9:05 pm-8:55 pm

2 stops36h 50m

Ko Samui

Mon 7/7

9:15 am-8:45 am

2 stops34h 30m

$1,793

Washington, D.C.Koh Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Thu 3/20

7:00 am-6:15 pm

3 stops48h 15m

Ko Samui

Wed 3/26

1:25 pm-5:55 am

2 stops27h 30m

$2,736

Washington, D.C.Koh Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Thu 5/8

9:05 pm-6:00 pm

2 stops33h 55m

$1,176

Washington, D.C.Koh Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Thu 5/8

7:00 am-9:15 pm

3 stops51h 15m

$1,506

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Koh Samui flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Koh Samui flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Koh Samui flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Koh Samui flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Koh Samui flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dulles Intl to Koh Samui

Have a flexible travel schedule? Discover the best time to fly to Koh Samui from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Dulles Intl to Koh Samui

Get recent, data-driven insights about flights from Dulles Intl to Koh Samui including ideal travel times, pricing trends, and more.

Rainfall in Koh Samui by month

Plan your trip to Koh Samui by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Koh Samui ranges from 2.3 - 19.3 inches per month. November is typically the wettest month, when rainfall can reach 19.3 in. February is typically the driest time to visit Koh Samui when rainfall is around 2.3 in.

Temperature in Koh Samui by month

Plan your trip to Koh Samui by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Koh Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).

Reviews of airlines servicing Koh Samui

Get insights into the airlines that provide service to Koh Samui. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Koh Samui. Reviews last updated November 20, 2024.
Turkish Airlines
7.4
Good
3,915 reviews

Comfort

7.3

Entertainment

7.5

Overall

7.4

Crew

7.8

Food

7.4

Boarding

7.3

Reviews

1 / 10

Flight attachments were not ok , they need to smile and show that they are helpful, they need to offer more often drinks and better snacks not dry breads

Turkish Airlines
7.4
Good
3,915 reviews
Turkish Airlines
7.4
Good
3,915 reviews

Comfort

7.3

Entertainment

7.5

Overall

7.4

Crew

7.8

Food

7.4

Boarding

7.3

Reviews

1 / 10

Flight attachments were not ok , they need to smile and show that they are helpful, they need to offer more often drinks and better snacks not dry breads

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Koh Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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 0 different airlines.

  • What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to Koh Samui round-trip?

    Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to Koh Samui round-trip from $2,927.

  • Can I find deals for flights from Dulles Intl to Koh Samui that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Koh Samui flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Koh Samui?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Koh Samui.

  • Can I find deals for business class flights from Dulles Intl to Koh Samui?

    Yes. Cheapflights offers flight deals from Dulles Intl to Koh Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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