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Koh Samui

$1,317+ Cheap flights from Washington, D.C. (WAS) to Koh Samui (USM)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — USM
dic. 27 — ene. 31
vie. 12/27
vie. 1/3
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 diciembre 22, 2024.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,317
(FlightHub)
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.
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From Washington, D.C. (WAS) to Ko Samui
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Find flight deals from Washington, D.C. to Koh Samui

Best flights from Washington, D.C. to Koh Samui
Discover carefully curated flight deals from Washington, D.C. to Koh Samui that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated diciembre 22, 2024.

This FlightHub deal was found by Cheapflights users on 12/21. 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.
mié. 3/51:30 pmIAD - USM
2 stops30h 40mTurkish Airlines
mié. 4/309:15 pmUSM - IAD
2 stops33h 30mTurkish Airlines
Deal found 12/21$1,317
This Gurufare deal was found by Cheapflights users on 12/21. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/209:40 pmIAD - USM
3 stops31h 00mMultiple Airlines
mié. 3/265:40 pmUSM - IAD
3 stops37h 10mMultiple Airlines
Deal found 12/21$1,547
This oojo deal was found by Cheapflights users on 12/21. 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.
mié. 3/59:00 amDCA - USM
2 stops45h 15mSingapore Airlines
mié. 4/304:25 pmUSM - DCA
3 stops63h 30mSingapore Airlines
Deal found 12/21$1,966
This CheapOair deal was found by Cheapflights users on 12/22. 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.
dom. 3/911:51 amBWI - USM
2 stops44h 44mCathay Pacific
jue. 3/1311:40 amUSM - BWI
2 stops45h 07mCathay Pacific
Deal found 12/22$2,121
This oojo deal was found by Cheapflights users on 12/21. 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.
mar. 1/79:30 pmIAD - USM
2 stops46h 15mEtihad Airways
mar. 1/148:30 pmUSM - IAD
2 stops55h 55mEtihad Airways
Deal found 12/21$2,131
This British Airways deal was found by Cheapflights users on 12/21. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/58:30 pmBWI - USM
2 stops33h 45mBritish Airways
mié. 4/304:25 pmUSM - BWI
2 stops38h 10mBritish Airways
Deal found 12/21$2,395
This CheapOair deal was found by Cheapflights users on 12/21. 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.
mar. 1/78:00 amDCA - USM
3 stops35h 40mJapan Airlines
mar. 1/149:25 pmUSM - DCA
3 stops36h 34mJapan Airlines
Deal found 12/21$3,181
This Cathay Pacific deal was found by Cheapflights users on 12/22. 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.
dom. 3/99:15 pmDCA - USM
2 stops35h 20mMultiple Airlines
jue. 3/1311:40 amUSM - DCA
2 stops32h 19mMultiple Airlines
Deal found 12/22$1,753
This StudentUniverse deal was found by Cheapflights users on 12/22. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/96:00 amDCA - USM
2 stops26h 35mCathay Pacific
jue. 3/134:30 pmUSM - DCA
3 stops27h 59mCathay Pacific
Deal found 12/22$2,280
This Gurufare deal was found by Cheapflights users on 12/21. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/56:00 pmBWI - USM
3 stops60h 15mSingapore Airlines
mié. 4/301:30 pmUSM - BWI
2 stops39h 18mSingapore Airlines
Deal found 12/21$2,309
This Mytrip deal was found by Cheapflights users on 12/21. 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.
mié. 1/16:55 amBWI - USM
3 stops37h 05mMultiple Airlines
lun. 2/37:25 pmUSM - BWI
3 stops38h 37mMultiple Airlines
Deal found 12/21$2,234
This AranGrant deal was found by Cheapflights users on 12/21. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 1/110:35 amIAD - USM
2 stops33h 10mQatar Airways
lun. 2/39:25 pmUSM - IAD
2 stops30h 30mQatar Airways
Deal found 12/21$6,774

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 2,558,603 searches. Data last updated diciembre 22, 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

mié. 3/5

1:30 pm-8:10 am

2 stops30h 40m

Ko Samui

mié. 4/30

9:15 pm-7:45 pm

2 stops33h 30m

$1,317

Washington, D.C.Koh Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

dom. 3/9

9:05 pm-6:15 pm

2 stops34h 10m

Ko Samui

jue. 3/13

8:15 am-4:55 pm

2 stops67h 40m

$1,405

Washington, D.C.Koh Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

dom. 3/9

9:15 pm-7:35 pm

2 stops35h 20m

Ko Samui

jue. 3/13

11:40 am-8:59 am

2 stops32h 19m

$1,753

Washington, D.C.Koh Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

mié. 3/5

9:00 am-6:15 pm

2 stops45h 15m

Ko Samui

mié. 4/30

4:25 pm-8:55 pm

3 stops63h 30m

$1,966

BaltimoreKoh Samui

BWI - USM

BWIUSM

Baltimore/Washington

dom. 3/9

11:51 am-7:35 pm

2 stops44h 44m

Ko Samui

jue. 3/13

11:40 am-9:47 pm

2 stops45h 07m

$2,121

Washington, D.C.Koh Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

mar. 1/7

9:30 pm-7:45 am

2 stops46h 15m

Ko Samui

mar. 1/14

8:30 pm-4:25 pm

2 stops55h 55m

$2,131

BaltimoreKoh Samui

BWI - USM

BWIUSM

Baltimore/Washington

mié. 1/1

6:55 am-8:00 am

3 stops37h 05m

Ko Samui

lun. 2/3

7:25 pm-10:02 pm

3 stops38h 37m

$2,234

Washington, D.C.Koh Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

dom. 3/9

6:00 am-7:35 pm

2 stops26h 35m

Ko Samui

jue. 3/13

4:30 pm-9:29 am

3 stops27h 59m

$2,280

BaltimoreKoh Samui

BWI - USM

BWIUSM

Baltimore/Washington

mié. 3/5

6:00 pm-6:15 pm

3 stops60h 15m

Ko Samui

mié. 4/30

1:30 pm-5:48 pm

2 stops39h 18m

$2,309

BaltimoreKoh Samui

BWI - USM

BWIUSM

Baltimore/Washington

mié. 3/5

8:30 pm-6:15 pm

2 stops33h 45m

Ko Samui

mié. 4/30

4:25 pm-7:35 pm

2 stops38h 10m

$2,395

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 14 results
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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 December.
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 diciembre 22, 2024.
To help decide which airline to fly from Washington, D.C. to Koh Samui, see what other customers have to say about Singapore Airlines and Cathay Pacific. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Japan Airlines
8.3
Very good
1,440 reviews

Overall

8.3

Entertainment

7.8

Crew

8.7

Food

7.7

Boarding

8.4

Comfort

8.2

Reviews

1 / 10

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

Japan Airlines
8.3
Very good
1,440 reviews
Japan Airlines
8.3
Very good
1,440 reviews

Overall

8.3

Entertainment

7.8

Crew

8.7

Food

7.7

Boarding

8.4

Comfort

8.2

Reviews

1 / 10

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

Singapore Airlines
8.1
Very good
1,331 reviews
Japan Airlines
8.3
Very good
1,440 reviews

Overall

8.3

Entertainment

7.8

Crew

8.7

Food

7.7

Boarding

8.4

Comfort

8.2

Reviews

1 / 10

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

Qatar Airways
7.5
Good
3,789 reviews
Japan Airlines
8.3
Very good
1,440 reviews

Overall

8.3

Entertainment

7.8

Crew

8.7

Food

7.7

Boarding

8.4

Comfort

8.2

Reviews

1 / 10

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

Cathay Pacific
7.5
Good
835 reviews
Japan Airlines
8.3
Very good
1,440 reviews

Overall

8.3

Entertainment

7.8

Crew

8.7

Food

7.7

Boarding

8.4

Comfort

8.2

Reviews

1 / 10

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

Etihad Airways
7.4
Good
1,208 reviews
Japan Airlines
8.3
Very good
1,440 reviews

Overall

8.3

Entertainment

7.8

Crew

8.7

Food

7.7

Boarding

8.4

Comfort

8.2

Reviews

1 / 10

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

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, Turkish Airlines ($1,317), Singapore Airlines ($1,966), and Cathay Pacific ($2,121) 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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