$2,308+ 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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Baltimore 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 Baltimore to Ko Samui
Cheapest flights from Baltimore to Ko SamuiExplore 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 December 12, 2025.
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 December 12, 2025.
This Gurufare deal was found by Cheapflights users on 12/11. 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.
This oojo deal was found by Cheapflights users on 12/11. 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.
Find 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 December 12, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $2,611 (Mytrip) |
Cheapflights Fare Finder
Use the filters below to find and compare flights from Baltimore to Ko Samui that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
BaltimoreKo Samui
BWI - USM
BWIUSM
Baltimore/Washington
Tue 3/10
9:35 pm-9:05 pm
2 stops36h 30m
Ko Samui
Tue 3/17
7:00 pm-7:45 pm
2 stops35h 45m
BaltimoreKo Samui
BWI - USM
BWIUSM
Baltimore/Washington
Sat 1/24
12:50 pm-8:25 am
3 stops31h 35m
Ko Samui
Sat 1/31
5:40 pm-2:58 pm
3 stops33h 18m
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
BaltimoreKo Samui
BWI - USM
BWIUSM
Baltimore/Washington
Sat 12/20
7:11 pm-7:35 pm
2 stops36h 24m
Ko Samui
Thu 1/1
11:40 am-7:29 pm
2 stops43h 49m
BaltimoreKo Samui
BWI - USM
BWIUSM
Baltimore/Washington
Wed 1/7
3:41 pm-7:35 pm
2 stops39h 54m
Ko Samui
Wed 1/21
11:40 am-11:52 pm
2 stops48h 12m
BaltimoreKo Samui
BWI - USM
BWIUSM
Baltimore/Washington
Wed 3/4
3:22 pm-7:35 pm
2 stops40h 13m
Ko Samui
Wed 3/11
11:40 am-9:58 pm
2 stops45h 18m
BaltimoreKo Samui
BWI - USM
BWIUSM
Baltimore/Washington
Sun 2/1
8:35 pm-7:50 pm
2 stops35h 15m
Ko Samui
Thu 2/12
4:25 pm-6:45 pm
2 stops38h 20m
BaltimoreKo Samui
BWI - USM
BWIUSM
Baltimore/Washington
Fri 2/6
8:35 pm-7:50 pm
2 stops35h 15m
Ko Samui
Thu 2/12
4:25 pm-6:45 pm
2 stops38h 20m
BaltimoreKo Samui
BWI - USM
BWIUSM
Baltimore/Washington
Tue 2/3
8:35 pm-6:15 pm
2 stops57h 40m
Ko Samui
Thu 2/12
4:25 pm-6:45 pm
2 stops38h 20m
BaltimoreKo Samui
BWI - USM
BWIUSM
Baltimore/Washington
Tue 2/3
8:35 pm-9:05 pm
2 stops36h 30m
Ko Samui
Wed 2/11
7:10 pm-6:45 pm
2 stops35h 35m
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 December.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars |
- 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.
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?
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?
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.
How often are flights from Baltimore to Ko Samui delayed?
About 17% of weekly flights between Baltimore and Ko Samui have experienced delays in the past year, with the average delay time being 124 minutes.
What is the most punctual flight time for Baltimore to Ko Samui flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Wednesday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Baltimore to Ko Samui flights?
Over the last year, Delta have had the lowest number of delays on this route, with just 14% of flights being delayed.