Cheap flights from Maryland to Ko Samui from $1,018

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Maryland to Ko Samui departing on 4/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Maryland to Ko Samui

Cheap round-trip flights

Enter your travel dates to find the best prices.
Etihad Airways Logo
3:35 pm - 7:10 am
IAD
-
USM
28h 35m2 stops
Etihad Airways Logo
5:55 pm - 9:45 am
USM
-
IAD
26h 50m2 stops
$1,018Etihad Airways
Mon, Apr 27 - Thu, May 7
Multiple Airlines Logo
3:35 pm - 7:10 am
IAD
-
USM
28h 35m2 stops
Multiple Airlines Logo
7:00 pm - 10:05 am
USM
-
IAD
50h 05m2 stops
$1,052Multiple Airlines
Tue, Mar 10 - Tue, Mar 17
Etihad Airways Logo
2:35 pm - 7:45 am
IAD
-
USM
29h 10m2 stops
Etihad Airways Logo
8:50 am - 10:05 am
USM
-
IAD
60h 15m2 stops
$1,072Etihad Airways
Wed, Mar 4 - Wed, Mar 11
Etihad Airways Logo
3:35 pm - 7:10 am
IAD
-
USM
28h 35m2 stops
Etihad Airways Logo
5:55 pm - 9:45 am
USM
-
IAD
26h 50m2 stops
$1,109Etihad Airways
Sun, Apr 26 - Fri, May 8
Multiple Airlines Logo
2:35 pm - 7:10 am
IAD
-
USM
28h 35m2 stops
Multiple Airlines Logo
5:05 pm - 10:05 am
USM
-
IAD
52h 00m2 stops
$1,176Multiple Airlines
Sat, Mar 7 - Sat, Mar 14
Turkish Airlines Logo
9:15 pm - 8:25 pm
IAD
-
USM
35h 10m2 stops
Turkish Airlines Logo
8:15 am - 8:20 pm
USM
-
IAD
47h 05m2 stops
$1,333Turkish Airlines
Sat, Mar 7 - Sat, Mar 14
Cathay Pacific Logo
9:59 am - 7:35 pm
DCA
-
USM
45h 36m2 stops
Cathay Pacific Logo
11:40 am - 5:59 pm
USM
-
DCA
41h 19m2 stops
$1,381Cathay Pacific
Wed, Mar 4 - Wed, Mar 11
Cathay Pacific Logo
6:42 pm - 7:35 pm
DCA
-
USM
36h 53m2 stops
Cathay Pacific Logo
11:40 am - 6:44 pm
USM
-
DCA
43h 04m2 stops
$1,768Cathay Pacific
Tue, Jan 6 - Wed, Jan 21
Singapore Airlines Logo
8:00 am - 6:15 pm
BWI
-
USM
46h 15m2 stops
Singapore Airlines Logo
1:25 pm - 9:26 pm
USM
-
BWI
44h 01m2 stops
$2,957Singapore Airlines
Sat, Jan 24 - Sat, Jan 31
Singapore Airlines Logo
8:00 am - 6:15 pm
BWI
-
USM
46h 15m2 stops
Singapore Airlines Logo
1:25 pm - 9:26 pm
USM
-
BWI
44h 01m3 stops
$3,295Singapore Airlines
Sat, Jan 24 - Sat, Jan 31

Etihad Airways flights from Maryland to Ko Samui

Our best Etihad Airways deals on Maryland to Ko Samui flight tickets
Etihad Airways
Apr 27
IAD3:35 pmWashington, D.C. Dulles Intl
28h 35m
2 stops
USM7:10 amKo Samui
May 7
USM5:55 pmKo Samui
26h 50m
2 stops
IAD9:45 amWashington, D.C. Dulles Intl
Etihad Airways
Mar 4
IAD2:35 pmWashington, D.C. Dulles Intl
29h 10m
2 stops
USM7:45 amKo Samui
Mar 11
USM8:50 amKo Samui
60h 15m
2 stops
IAD10:05 amWashington, D.C. Dulles Intl
Etihad Airways
Apr 26
IAD3:35 pmWashington, D.C. Dulles Intl
28h 35m
2 stops
USM7:10 amKo Samui
May 8
USM5:55 pmKo Samui
26h 50m
2 stops
IAD9:45 amWashington, D.C. Dulles Intl

Turkish Airlines flights from Maryland to Ko Samui

Our best Turkish Airlines deals on Maryland to Ko Samui flight tickets
Turkish Airlines
Mar 7
IAD9:15 pmWashington, D.C. Dulles Intl
35h 10m
2 stops
USM8:25 pmKo Samui
Mar 14
USM8:15 amKo Samui
47h 05m
2 stops
IAD8:20 pmWashington, D.C. Dulles Intl
Turkish Airlines
Mar 6
IAD1:30 pmWashington, D.C. Dulles Intl
35h 20m
2 stops
USM12:50 pmKo Samui
Mar 14
USM8:15 amKo Samui
39h 30m
2 stops
IAD12:45 pmWashington, D.C. Dulles Intl
Turkish Airlines
Jan 9
IAD1:30 pmWashington, D.C. Dulles Intl
40h 45m
2 stops
USM6:15 pmKo Samui
Jan 20
USM6:40 pmKo Samui
36h 40m
2 stops
IAD7:20 pmWashington, D.C. Dulles Intl

momondo 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, momondo users made 832,500 searches. Data last updated December 11, 2025.
Use the filters below to find and compare flights from Maryland to Ko Samui that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Ko Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Mon 4/27

3:35 pm-7:10 am

2 stops28h 35m

Ko Samui

Thu 5/7

5:55 pm-9:45 am

2 stops26h 50m

$1,018

Washington, D.C.Ko Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Tue 3/10

3:35 pm-7:10 am

2 stops28h 35m

Ko Samui

Tue 3/17

7:00 pm-10:05 am

2 stops50h 05m

$1,052

Washington, D.C.Ko Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Wed 3/4

2:35 pm-7:45 am

2 stops29h 10m

Ko Samui

Wed 3/11

8:50 am-10:05 am

2 stops60h 15m

$1,072

Washington, D.C.Ko Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Sun 4/26

3:35 pm-7:10 am

2 stops28h 35m

Ko Samui

Fri 5/8

5:55 pm-9:45 am

2 stops26h 50m

$1,109

Washington, D.C.Ko Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Sat 3/7

2:35 pm-7:10 am

2 stops28h 35m

Ko Samui

Sat 3/14

5:05 pm-10:05 am

2 stops52h 00m

$1,176

Washington, D.C.Ko Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Sat 3/7

9:15 pm-8:25 pm

2 stops35h 10m

Ko Samui

Sat 3/14

8:15 am-8:20 pm

2 stops47h 05m

$1,333

Washington, D.C.Ko Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

Wed 3/4

9:59 am-7:35 pm

2 stops45h 36m

Ko Samui

Wed 3/11

11:40 am-5:59 pm

2 stops41h 19m

$1,381

Washington, D.C.Ko Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

Tue 1/6

6:42 pm-7:35 pm

2 stops36h 53m

Ko Samui

Wed 1/21

11:40 am-6:44 pm

2 stops43h 04m

$1,768

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Sat 1/24

8:00 am-6:15 pm

2 stops46h 15m

Ko Samui

Sat 1/31

1:25 pm-9:26 pm

2 stops44h 01m

$2,957

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Sat 1/24

8:00 am-6:15 pm

2 stops46h 15m

Ko Samui

Sat 1/31

1:25 pm-9:26 pm

3 stops44h 01m

$3,295

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Ko Samui from

How to get the cheapest flight ticket from Maryland to Ko Samui

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Ko Samui?

Our data shows that Wednesday is the least expensive day to fly to Ko Samui. Tickets to fly out on this day can be as low as $325. Flights from Maryland to Ko Samui on a Sunday will generally be more expensive and average around $714. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Ko Samui?

Our data shows that the cheapest Maryland to Ko Samui flights are usually those with departure times in the evening. Our users have found flights to Ko Samui in the evening for as low as $286. At noon is when there is more demand to fly to Ko Samui, so prices are often more expensive at around $399 per ticket.

Cheap Maryland to Ko Samui flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Maryland to Ko Samui

Fastest flight time

29h 10m

Direct flights

None
The fastest flight from Maryland to Ko Samui takes 29h 10m
There are no direct flights from Maryland to Ko Samui. There are no popular flight routes from Maryland to Ko Samui.
  • When did momondo last update prices for flights from Maryland to Ko Samui Airport?

    Prices for flights from Maryland to Ko Samui Airport are updated daily.

  • How old do you have to be to fly from Maryland to Ko Samui Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Maryland to Ko Samui Airport.

  • What documentation or ID do you need to fly to Ko Samui Airport?

    The necessary travel and health documents for your Ko Samui Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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
Khanom

Why use momondo?

Why should I use momondo to find a flight deal from Maryland to Ko Samui?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ko Samui from Maryland.

Can I find flights from Maryland to Ko Samui with flexible booking policies on momondo?

All flight searches from Maryland to Ko Samui on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Maryland to Ko Samui?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Maryland to Ko Samui.

I’m not ready to book a flight from Maryland to Ko Samui right now. Can momondo alert me if prices change?

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1 adult
Sat 1/10
Sat 1/17

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