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Ko Samui

$1,050+ Cheap flights from Maryland to Ko 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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — USM
Mar 4 — Mar 111
Wed 3/4
Wed 3/11
1 adult, Economy
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Cheap 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 February 2, 2026.

This Gotogate deal was found by Cheapflights users on 1/31. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/43:10 pm
IAD
-
USM
2 stops33h 05m
Multiple Airlines
Sat 9/1211:45 am
USM
-
IAD
2 stops33h 00m
Multiple Airlines
Deal found 1/31$1,050
This Gotogate deal was found by Cheapflights users on 2/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/23:10 pm
IAD
-
USM
2 stops33h 05m
Multiple Airlines
Sat 9/1911:45 am
USM
-
IAD
2 stops33h 00m
Multiple Airlines
Deal found 2/1$1,089
This Trip.com deal was found by Cheapflights users on 1/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/173:35 pm
IAD
-
USM
2 stops28h 55m
Multiple Airlines
Tue 3/247:00 pm
USM
-
IAD
2 stops50h 05m
Multiple Airlines
Deal found 1/31$1,122
This oojo deal was found by Cheapflights users on 2/2. 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 3/192:30 pm
IAD
-
USM
2 stops30h 00m
Multiple Airlines
Thu 3/267:30 pm
USM
-
IAD
2 stops28h 15m
Multiple Airlines
Deal found 2/2$1,150
This SmartFares deal was found by Cheapflights users on 2/1. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/182:35 pm
IAD
-
USM
2 stops28h 35m
Multiple Airlines
Wed 11/259:20 am
USM
-
IAD
2 stops35h 45m
Multiple Airlines
Deal found 2/1$1,185
This oojo deal was found by Cheapflights users on 2/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/22:35 pm
IAD
-
USM
2 stops29h 10m
Etihad Airways
Mon 3/98:50 am
USM
-
IAD
2 stops60h 15m
Etihad Airways
Deal found 2/1$1,215
This Emirates deal was found by Cheapflights users on 2/1. 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 10/2811:15 am
IAD
-
USM
2 stops43h 15m
Emirates
Sun 11/18:15 am
USM
-
IAD
2 stops35h 55m
Emirates
Deal found 2/1$1,410
This Ovago deal was found by Cheapflights users on 2/1. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:15 am
BWI
-
USM
2 stops48h 00m
Multiple Airlines
Wed 11/254:25 pm
USM
-
BWI
2 stops30h 55m
Multiple Airlines
Deal found 2/1$1,437
This oojo deal was found by Cheapflights users on 2/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/121:20 pm
IAD
-
USM
2 stops31h 55m
Turkish Airlines
Sun 6/217:15 pm
USM
-
IAD
2 stops27h 20m
Turkish Airlines
Deal found 2/1$1,522
This FlightHub deal was found by Cheapflights users on 2/1. 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.
Sun 7/2611:05 am
IAD
-
USM
2 stops36h 25m
Qatar Airways
Fri 7/315:55 pm
USM
-
IAD
2 stops25h 50m
Qatar Airways
Deal found 2/1$1,636
This Cathay Pacific deal was found by Cheapflights users on 2/2. 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.
Thu 3/192:14 pm
DCA
-
USM
2 stops42h 21m
Multiple Airlines
Thu 3/2611:40 am
USM
-
DCA
2 stops44h 01m
Multiple Airlines
Deal found 2/2$1,705
This KAYAK deal was found by Cheapflights users on 2/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/66:30 am
IAD
-
USM
2 stops27h 40m
Multiple Airlines
Mon 7/134:25 pm
USM
-
IAD
2 stops41h 18m
Multiple Airlines
Deal found 2/1$1,736

Find 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 February 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,122
(Trip.com)
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

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 February 2, 2026.
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

Tue 3/17

3:35 pm-7:30 am

2 stops28h 55m

Ko Samui

Tue 3/24

7:00 pm-10:05 am

2 stops50h 05m

$1,122

Washington, D.C.Ko Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Mon 3/2

2:35 pm-7:45 am

2 stops29h 10m

Ko Samui

Mon 3/9

8:50 am-10:05 am

2 stops60h 15m

$1,215

Washington, D.C.Ko Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Mon 4/6

9:45 pm-6:15 pm

2 stops33h 30m

Ko Samui

Sun 4/12

1:30 pm-11:35 am

2 stops57h 05m

$1,455

Washington, D.C.Ko Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Sun 7/26

11:05 am-10:30 am

2 stops36h 25m

Ko Samui

Fri 7/31

5:55 pm-8:45 am

2 stops25h 50m

$1,636

Washington, D.C.Ko Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

Thu 3/19

2:14 pm-7:35 pm

2 stops42h 21m

Ko Samui

Thu 3/26

11:40 am-8:41 pm

2 stops44h 01m

$1,705

Washington, D.C.Ko Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Mon 7/6

6:30 am-9:10 pm

2 stops27h 40m

Ko Samui

Mon 7/13

4:25 pm-10:43 pm

2 stops41h 18m

$1,736

Washington, D.C.Ko Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Mon 3/2

8:50 pm-4:25 pm

3 stops31h 35m

Ko Samui

Mon 3/9

8:20 pm-9:00 am

3 stops47h 40m

$1,751

Washington, D.C.Ko Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Thu 3/19

11:00 am-3:35 pm

2 stops41h 35m

Ko Samui

Thu 3/26

8:20 pm-9:00 am

3 stops47h 40m

$1,822

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Fri 6/12

7:27 pm-12:45 pm

2 stops30h 18m

Ko Samui

Sun 6/21

1:30 pm-7:10 am

2 stops28h 40m

$1,931

Washington, D.C.Ko Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Thu 3/19

9:05 pm-8:50 pm

3 stops36h 45m

Ko Samui

Thu 3/26

8:30 am-9:20 am

3 stops35h 50m

$1,941

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/31

Showing 1-10 of 19 results
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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 February 2, 2026.

A simple way to save on the total cost of your ticket is to fly from Maryland to Ko Samui in the evening. If you’re flexible enough to do this you can expect to save up to 64% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from Maryland to Ko Samui?

Use this chart to determine the cheapest time to fly round-trip from Maryland to Ko Samui. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their Maryland to Ko Samui flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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.

  • How long is the flight from Maryland to Ko Samui?

    Airlines like Etihad Airways, Cathay Pacific, and British Airways fly from Maryland to Ko Samui in about 29h 10m. The time it takes to get you to your destination can typically vary by up to 28h 35m. There are 9076 mi between Maryland and Ko Samui. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Most travelers choose Baltimore/Washington - Ko Samui, Washington, D.C. Dulles Intl - 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 Ko Samui?

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

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