HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ko Samui

$710+ Cheap flights from Maryland to Ko 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 8/14. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — USM
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Maryland to Ko Samui with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Maryland to Ko Samui

Keep the following information in mind while searching for Maryland to Ko Samui flight deals. Data was last updated May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,252
(FlightHub)

One-way from

$1,001
(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.
Search Deals
From Maryland to Ko Samui
Search Deals
One-way flight from Maryland to Ko Samui
Search Deals

Find flight deals from Maryland to Ko Samui

Cheapest flights from Maryland to Ko Samui
Explore the most affordable flight options available from Maryland to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This FlightHub deal was found by Cheapflights users on 4/30. 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.
Wed 10/19:40 pmIAD - USM
2 stops23h 55mTurkish Airlines
Fri 10/313:35 pmUSM - IAD
2 stops31h 40mTurkish Airlines
Deal found 4/30$1,252
This Emirates deal was found by Cheapflights users on 5/1. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2210:55 amIAD - USM
2 stops60h 15mEmirates
Wed 10/293:05 pmUSM - IAD
2 stops28h 55mEmirates
Deal found 5/1$1,333
This FlightHub deal was found by Cheapflights users on 5/1. 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.
Sat 11/298:05 pmIAD - USM
2 stops31h 30mQatar Airways
Mon 1/265:40 pmUSM - IAD
2 stops34h 15mQatar Airways
Deal found 5/1$1,363
This KAYAK deal was found by Cheapflights users on 4/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/249:40 pmIAD - USM
2 stops27h 00mMultiple Airlines
Sun 8/314:25 pmUSM - IAD
2 stops30h 20mMultiple Airlines
Deal found 4/30$1,412
This FlightHub deal was found by Cheapflights users on 4/30. 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.
Sun 8/246:30 amDCA - USM
2 stops49h 05mCathay Pacific
Sun 8/3110:55 amUSM - DCA
2 stops44h 21mCathay Pacific
Deal found 4/30$1,789
This Gurufare deal was found by Cheapflights users on 4/30. 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.
Wed 10/17:28 pmBWI - USM
2 stops38h 42mSingapore Airlines
Fri 10/311:25 pmUSM - BWI
2 stops38h 22mSingapore Airlines
Deal found 4/30$1,908
This Gurufare deal was found by Cheapflights users on 4/30. 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.
Wed 10/18:59 amDCA - USM
3 stops46h 16mSingapore Airlines
Fri 10/311:25 pmUSM - DCA
2 stops42h 30mSingapore Airlines
Deal found 4/30$1,945
This Mytrip deal was found by Cheapflights users on 5/1. 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.
Sun 6/158:40 pmDCA - USM
3 stops34h 50mMultiple Airlines
Sun 6/228:50 pmUSM - DCA
3 stops35h 58mMultiple Airlines
Deal found 5/1$2,561
This KAYAK deal was found by Cheapflights users on 4/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/249:20 pmBWI - USM
2 stops33h 55mBritish Airways
Sun 8/314:25 pmUSM - BWI
2 stops38h 10mBritish Airways
Deal found 4/30$2,688
This British Airways deal was found by Cheapflights users on 4/29. 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.
Tue 6/39:20 pmBWI - USM
2 stops33h 55mMultiple Airlines
Wed 6/114:25 pmUSM - BWI
2 stops38h 10mMultiple Airlines
Deal found 4/29$2,759
This Gurufare deal was found by Cheapflights users on 4/30. 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.
Sat 6/1411:26 amBWI - USM
2 stops44h 09mCathay Pacific
Sat 6/2110:55 amUSM - BWI
2 stops47h 58mCathay Pacific
Deal found 4/30$2,828
This oojo deal was found by Cheapflights users on 4/29. 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.
Tue 6/37:25 pmIAD - USM
3 stops59h 50mSingapore Airlines
Wed 6/114:25 pmUSM - IAD
3 stops59h 00mSingapore Airlines
Deal found 4/29$4,270

Cheapflights Fare Finder

Customize your flight search to find flights from Maryland to Ko 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 May 1, 2025.
Use the filters below to find and compare flights from Maryland to Ko Samui that are best for you.

Fly from

Maryland

Fly to

Ko Samui

Route

Depart

Return

Price

Washington, D.C.Ko Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Wed 10/1

9:40 pm-8:35 am

2 stops23h 55m

Ko Samui

Fri 10/31

3:35 pm-12:15 pm

2 stops31h 40m

$1,252

Washington, D.C.Ko Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Wed 10/22

10:55 am-10:10 am

2 stops60h 15m

Ko Samui

Wed 10/29

3:05 pm-9:00 am

2 stops28h 55m

$1,333

Washington, D.C.Ko Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Sun 8/24

9:40 pm-11:40 am

2 stops27h 00m

Ko Samui

Sun 8/31

4:25 pm-11:45 am

2 stops30h 20m

$1,412

Washington, D.C.Ko Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

Sun 8/24

6:30 am-6:35 pm

2 stops49h 05m

Ko Samui

Sun 8/31

10:55 am-8:16 pm

2 stops44h 21m

$1,789

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Wed 10/1

7:28 pm-9:10 pm

2 stops38h 42m

Ko Samui

Fri 10/31

1:25 pm-4:47 pm

2 stops38h 22m

$1,908

Washington, D.C.Ko Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

Wed 10/1

8:59 am-6:15 pm

3 stops46h 16m

Ko Samui

Fri 10/31

1:25 pm-8:55 pm

2 stops42h 30m

$1,945

Washington, D.C.Ko Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

Sun 6/15

8:40 pm-6:30 pm

3 stops34h 50m

Ko Samui

Sun 6/22

8:50 pm-9:48 pm

3 stops35h 58m

$2,561

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Sun 8/24

9:20 pm-6:15 pm

2 stops33h 55m

Ko Samui

Sun 8/31

4:25 pm-7:35 pm

2 stops38h 10m

$2,688

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Tue 6/3

9:20 pm-6:15 pm

2 stops33h 55m

Ko Samui

Wed 6/11

4:25 pm-7:35 pm

2 stops38h 10m

$2,759

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Sat 6/14

11:26 am-6:35 pm

2 stops44h 09m

Ko Samui

Sat 6/21

10:55 am-11:53 pm

2 stops47h 58m

$2,828

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 15 results
1
2

Best time to book a flight from Maryland to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Maryland 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.

Cheapflights Insights

Everything you need to know about your flight from Maryland to Ko Samui

What is the cheapest time of day to fly from MD to USM?

Find hourly flight availability from Maryland to Ko Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Maryland to Ko Samui as you normally would.

Rainfall in Ko Samui by month

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

In terms of precipitation, rainfall in Ko 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 Ko Samui when rainfall is around 2.3 in.

Temperature in Ko Samui by month

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

If weather is an important factor for your trip to Ko 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 Ko Samui

Get insights into the airlines that provide service to Ko 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 Ko Samui. Reviews last updated May 1, 2025.
See what other customers who have flown with Singapore Airlines, Emirates and Cathay Pacific from Maryland to Ko Samui have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very good
1,292 reviews

Entertainment

8.0

Overall

8.1

Food

7.7

Comfort

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Singapore Airlines
8.1
Very good
1,292 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Entertainment

8.0

Overall

8.1

Food

7.7

Comfort

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Emirates
8.0
Very good
3,218 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Entertainment

8.0

Overall

8.1

Food

7.7

Comfort

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Cathay Pacific
7.5
Good
855 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Entertainment

8.0

Overall

8.1

Food

7.7

Comfort

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Turkish Airlines
7.3
Good
3,791 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Entertainment

8.0

Overall

8.1

Food

7.7

Comfort

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
British Airways
6.6
Okay
6,846 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Entertainment

8.0

Overall

8.1

Food

7.7

Comfort

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

Related info for your journey

Find useful and relevant information for your journey from Maryland to Ko 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 Ko Samui from Maryland?

    Ko Samui (USM) is the airport you will fly into if you book a flight from Maryland to Ko Samui. It is only a 2.1 mi journey from Ko Samui (USM) to Ko Samui’s city center.

  • What are the most popular routes from Maryland to Ko Samui?

    Most travelers choose Washington, D.C. Dulles Intl - Ko Samui, Baltimore/Washington - Ko Samui or Washington, D.C. Reagan-National - Ko Samui when deciding on the best route from Maryland to Ko Samui.

  • Can I find deals for flights from Maryland to Ko Samui that include hotel bookings?

    Yes. In addition to deals on Maryland to Ko Samui flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Maryland to Ko Samui?

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

  • Can I find deals for business class flights from Maryland to Ko Samui?

    Yes. Cheapflights offers flight deals from Maryland to Ko 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.

See more FAQs

Traveling to a place near Maryland?

Book flights to Maryland if you plan to visit one of these locations
Ko Tao
Ko Pha Ngan

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Maryland to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Suvarnabhumi flights
John F Kennedy Intl to Suvarnabhumi flights
Seattle to Suvarnabhumi flights
Dallas/Fort Worth to Suvarnabhumi flights
Newark to Suvarnabhumi flights
LaGuardia to Suvarnabhumi flights
O'Hare Intl to Suvarnabhumi flights
San Francisco to Suvarnabhumi flights
Dulles Intl to Suvarnabhumi flights
Hobby to Suvarnabhumi flights
Atlanta to Suvarnabhumi flights
Boston to Suvarnabhumi flights
Miami to Suvarnabhumi flights
Reagan-National to Suvarnabhumi flights
George Bush Intcntl to Suvarnabhumi flights
Ontario to Suvarnabhumi flights
Baltimore to Suvarnabhumi flights
Love Field to Suvarnabhumi flights
Burbank to Suvarnabhumi flights
Santa Ana to Suvarnabhumi flights
Dallas/Fort Worth to Don Mueang Intl flights
Minneapolis to Suvarnabhumi flights
Midway to Suvarnabhumi flights
Denver to Suvarnabhumi flights
San Jose to Suvarnabhumi flights
Orlando to Suvarnabhumi flights
Honolulu to Suvarnabhumi flights
Sky Harbor Intl to Suvarnabhumi flights
Portland to Suvarnabhumi flights
Tampa to Suvarnabhumi flights
Oakland to Suvarnabhumi flights
Austin to Suvarnabhumi flights
Philadelphia to Suvarnabhumi flights
Las Vegas to Suvarnabhumi flights
Los Angeles to Don Mueang Intl flights
John F Kennedy Intl to Phuket City flights
John F Kennedy Intl to Don Mueang Intl flights
Detroit to Suvarnabhumi flights
Nashville to Suvarnabhumi flights
Charlotte to Suvarnabhumi flights
Seattle to Chiang Mai flights
Boise to Suvarnabhumi flights
Raleigh to Suvarnabhumi flights
Los Angeles to Phuket City flights
San Diego to Suvarnabhumi flights
Columbus to Suvarnabhumi flights
Newark to Phuket City flights
San Antonio to Suvarnabhumi flights
LaGuardia to Phuket City flights
Dulles Intl to Don Mueang Intl flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
Privacy Preferences©2025 Cheapflights