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Koh Samui

$1,176+ Cheap flights from Washington, D.C. (WAS) 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.
WAS — USM
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Koh Samui

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) 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

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

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

Cheapest flights from Washington, D.C. to Koh Samui
Explore the most affordable flight options available from Washington, D.C. 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 Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/37:30 pmBWI - USM
3 stops27h 05mMultiple Airlines
Thu 12/126:15 pmUSM - BWI
3 stops36h 09mMultiple Airlines
Deal found 11/19$2,013
This Cathay Pacific 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/39:07 pmDCA - USM
2 stops34h 28mMultiple Airlines
Thu 12/1211:40 amUSM - DCA
2 stops33h 14mMultiple Airlines
Deal found 11/19$2,048
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/35:58 pmDCA - USM
3 stops28h 42mQatar Airways
Thu 12/128:30 pmUSM - DCA
3 stops33h 13mQatar Airways
Deal found 11/19$2,339
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
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/198:30 amBWI - USM
2 stops45h 45mSingapore Airlines
Thu 12/264:25 pmUSM - BWI
2 stops50h 35mSingapore Airlines
Deal found 11/19$4,036

Find flights from Washington, D.C. to Koh Samui within your budget

Customize your flight search to find flights from Washington, D.C. 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

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

Sat 3/22

6:59 am-7:35 pm

2 stops25h 36m

Ko Samui

Sat 3/29

11:40 am-9:59 am

2 stops33h 19m

$1,927

BaltimoreKoh Samui

BWI - USM

BWIUSM

Baltimore/Washington

Tue 12/3

7:30 pm-10:35 am

3 stops27h 05m

Ko Samui

Thu 12/12

6:15 pm-6:24 pm

3 stops36h 09m

$2,013

Washington, D.C.Koh Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

Tue 12/3

9:07 pm-7:35 pm

2 stops34h 28m

Ko Samui

Thu 12/12

11:40 am-8:54 am

2 stops33h 14m

$2,048

Washington, D.C.Koh Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

Tue 12/3

5:58 pm-10:40 am

3 stops28h 42m

Ko Samui

Thu 12/12

8:30 pm-5:43 pm

3 stops33h 13m

$2,339

Washington, D.C.Koh Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

Fri 4/4

9:30 am-9:15 pm

2 stops48h 45m

Ko Samui

Sun 4/13

1:30 pm-8:55 pm

2 stops42h 25m

$2,468

BaltimoreKoh Samui

BWI - USM

BWIUSM

Baltimore/Washington

Fri 4/4

9:20 pm-6:20 pm

2 stops34h 00m

Ko Samui

Sun 4/13

1:30 pm-7:30 pm

2 stops41h 00m

$2,583

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

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 15 results
1
2

Compare providers for flights from Washington, D.C. to Koh Samui

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to Koh Samui in November.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C.-Koh Samui flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Washington, D.C.-Koh Samui flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Koh Samui flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-Koh Samui flights, Cheapflights users trust AranGrant the most. AranGrant 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.-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 Washington, D.C. to Koh Samui

Have a flexible travel schedule? Discover the best time to fly to Koh Samui from Washington, D.C. 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 Washington, D.C. to Koh Samui

Get recent, data-driven insights about flights from Washington, D.C. 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.
Singapore Airlines
8.1
Very good
1,336 reviews

Boarding

8.3

Overall

8.1

Crew

8.6

Entertainment

8.0

Comfort

8.0

Food

7.7

Reviews

1 / 10

Sin to amd was not good flight. Food was bad. It was like few days old.

Singapore Airlines
8.1
Very good
1,336 reviews
Singapore Airlines
8.1
Very good
1,336 reviews

Boarding

8.3

Overall

8.1

Crew

8.6

Entertainment

8.0

Comfort

8.0

Food

7.7

Reviews

1 / 10

Sin to amd was not good flight. Food was bad. It was like few days old.

Qatar Airways
7.5
Good
3,831 reviews
Singapore Airlines
8.1
Very good
1,336 reviews

Boarding

8.3

Overall

8.1

Crew

8.6

Entertainment

8.0

Comfort

8.0

Food

7.7

Reviews

1 / 10

Sin to amd was not good flight. Food was bad. It was like few days old.

Turkish Airlines
7.4
Good
3,915 reviews
Singapore Airlines
8.1
Very good
1,336 reviews

Boarding

8.3

Overall

8.1

Crew

8.6

Entertainment

8.0

Comfort

8.0

Food

7.7

Reviews

1 / 10

Sin to amd was not good flight. Food was bad. It was like few days old.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. 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.?

    For a flight from Washington, D.C. to Koh Samui, you will be flying into Ko Samui. Ko Samui (USM) is just 2.1 mi from the center of the city. Ko Samui is the only Koh Samui airport and it handles 0 inbound flights from Washington, D.C. per day. 0 airlines have flights to Ko Samui from Washington, D.C. on a regular basis.

  • What are the cheapest airlines flying from Washington, D.C. to Koh Samui round-trip?

    According to our current data, Qatar Airways ($2,339), Turkish Airlines ($2,927), and Singapore Airlines ($4,036) offers the cheapest pricing from Washington, D.C. to Koh Samui.

  • What are the most popular routes from Washington, D.C. to Koh Samui?

    The most popular flight routes from Washington, D.C. to Koh Samui are Washington, D.C. Dulles Intl - Ko Samui, Washington, D.C. Reagan-National - Ko Samui and Baltimore/Washington - Ko Samui.

  • Can I find deals for flights from Washington, D.C. to Koh Samui that include hotel bookings?

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

  • How can I find direct flights from Washington, D.C. to Koh Samui?

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

  • Can I find deals for business class flights from Washington, D.C. to Koh Samui?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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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