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Ko Samui

$1,734+ Cheap flights from Baltimore (BWI) 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 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — USM
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Find flight deals from Baltimore to Ko Samui

Cheapest flights from Baltimore to Ko Samui
Explore the most affordable flight options available from Baltimore to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

This Mytrip deal was found by Cheapflights users on 10/25. 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.
Mon 11/242:26 pmBWI - USM
3 stops32h 34mMultiple Airlines
Mon 12/18:30 amUSM - BWI
3 stops37h 06mMultiple Airlines
Deal found 10/25$1,734
This FlightHub deal was found by Cheapflights users on 10/26. 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 11/197:07 amBWI - USM
2 stops49h 58mSingapore Airlines
Wed 11/261:25 pmUSM - BWI
2 stops40h 26mSingapore Airlines
Deal found 10/26$2,183
This British Airways deal was found by Cheapflights users on 10/26. 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.
Fri 11/148:35 pmBWI - USM
2 stops35h 50mBritish Airways
Mon 12/157:00 pmUSM - BWI
2 stops35h 45mBritish Airways
Deal found 10/26$2,434
This British Airways deal was found by Cheapflights users on 10/27. 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.
Thu 11/138:35 pmBWI - USM
2 stops57h 40mBritish Airways
Mon 11/174:25 pmUSM - BWI
2 stops38h 20mBritish Airways
Deal found 10/27$2,441
This Qatar Airways deal was found by Cheapflights users on 10/26. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1911:52 amBWI - USM
3 stops37h 38mMultiple Airlines
Wed 11/268:45 pmUSM - BWI
3 stops55h 33mMultiple Airlines
Deal found 10/26$2,536
This British Airways deal was found by Cheapflights users on 10/26. 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.
Thu 10/309:35 pmBWI - USM
2 stops36h 30mBritish Airways
Mon 11/34:25 pmUSM - BWI
2 stops38h 20mBritish Airways
Deal found 10/26$3,020
This Singapore Airlines deal was found by Cheapflights users on 10/27. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:57 pmBWI - USM
3 stops62h 08mSingapore Airlines
Mon 11/171:25 pmUSM - BWI
2 stops40h 42mSingapore Airlines
Deal found 10/27$3,649
This Singapore Airlines deal was found by Cheapflights users on 10/26. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/307:03 pmBWI - USM
2 stops63h 02mSingapore Airlines
Mon 11/34:25 pmUSM - BWI
3 stops61h 42mSingapore Airlines
Deal found 10/26$4,618

Cheap flight deals from Baltimore to Ko Samui

Discover tips and strategies to find the most affordable flight options for your journey from Baltimore (BWI) to Ko 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 October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,734
(Mytrip)
Provider with most accurate pricing for Baltimore/Washington-Ko Samui flight deals.
Search Deals
Provider most trusted by Cheapflights users for Baltimore/Washington-Ko Samui flights.
Search Deals
From Baltimore/Washington to Ko Samui
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Baltimore 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 October 28, 2025.
Use the filters below to find and compare flights from Baltimore to Ko Samui that are best for you.

Fly from

Baltimore

Fly to

Ko Samui

Route

Depart

Return

Price

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Mon 11/24

2:26 pm-11:00 am

3 stops32h 34m

Ko Samui

Mon 12/1

8:30 am-9:36 am

3 stops37h 06m

$1,734

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Wed 1/28

8:01 am-6:15 pm

2 stops46h 14m

Ko Samui

Tue 2/3

1:25 pm-9:26 pm

3 stops44h 01m

$1,929

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Tue 2/10

7:40 pm-8:40 am

3 stops25h 00m

Ko Samui

Tue 2/24

6:05 pm-7:19 pm

3 stops37h 14m

$1,995

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Wed 11/19

7:07 am-9:05 pm

2 stops49h 58m

Ko Samui

Wed 11/26

1:25 pm-5:51 pm

2 stops40h 26m

$2,183

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Tue 2/10

8:35 pm-6:15 pm

2 stops33h 40m

Ko Samui

Tue 2/24

7:10 pm-6:45 pm

2 stops35h 35m

$2,310

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Fri 11/14

8:35 pm-8:25 pm

2 stops35h 50m

Ko Samui

Mon 12/15

7:00 pm-6:45 pm

2 stops35h 45m

$2,434

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Thu 11/13

8:35 pm-6:15 pm

2 stops57h 40m

Ko Samui

Mon 11/17

4:25 pm-6:45 pm

2 stops38h 20m

$2,441

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Tue 3/31

9:30 pm-6:15 pm

2 stops33h 45m

Ko Samui

Thu 4/30

4:25 pm-7:40 pm

2 stops38h 15m

$2,506

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Wed 11/19

11:52 am-1:30 pm

3 stops37h 38m

Ko Samui

Wed 11/26

8:45 pm-4:18 pm

3 stops55h 33m

$2,536

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/25

Compare providers for flights from Baltimore to Ko 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 Baltimore to Ko Samui in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 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 Baltimore-Ko Samui flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Baltimore-Ko Samui flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Baltimore-Ko Samui flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Baltimore-Ko Samui flights, Cheapflights users trust eDreams the most. eDreams 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 Baltimore-Ko 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 Baltimore to Ko Samui

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

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

Find hourly flight availability from Baltimore 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 October 28, 2025.

It’s typically best to fly out from Baltimore to Ko Samui in the evening. Doing so could potentially save you 64% on the flight price compared to flying in the afternoon, which is usually more expensive.

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

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

Travelers seeking maximum savings on their Baltimore 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 Baltimore to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    For as low as $1,929, Singapore Airlines can have you in Ko Samui from Baltimore in 46h 14m. Baltimore and Ko Samui are separated by a distance of 9057 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Baltimore 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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