Cheap flights from Don Mueang Intl (DMK) to Ko Samui (USM)
DMK — USM
May 9 — May 161
Round-trip
1 adult, Economy
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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.Cheapflights Tip: The best prices from Bangkok Don Mueang Intl to Ko Samui are usually found in September or June, booked 86 days in advance, depart on a Tuesday or Monday and return on a Tuesday
Find flight deals from Don Mueang Intl to Ko Samui
Discover tips and strategies to find the most affordable flight options for your journey from Don Mueang Intl (DMK) 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 April 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Popular in | March |
Cheapest in | September |
Average price | $301 |
Good round-trip deal | $281 or less |
Good one-way deal | $169 or less |
Compare providers for flights from Don Mueang Intl 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 Don Mueang Intl to Ko Samui in April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Bangkok Don Mueang Intl Airport-Ko Samui flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Bangkok Don Mueang Intl Airport-Ko Samui flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Bangkok Don Mueang Intl Airport-Ko Samui flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Bangkok Don Mueang Intl Airport-Ko Samui flights, Cheapflights users trust FlightHub the most. FlightHub 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 Bangkok Don Mueang Intl Airport-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 Don Mueang Intl to Ko Samui
Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Don Mueang Intl with our price prediction graph.
DMK-USM
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 Bangkok Don Mueang Intl Airport to Ko Samui
Prices
Airlines
Delays
How far ahead should I book a flight from Bangkok Don Mueang Intl Airport to Ko Samui?
Use this chart to determine the optimal time to book a round-trip flight from Don Mueang Intl to Ko Samui. Price data was last updated on April 3, 2026.
The best time to book flights from Bangkok Don Mueang Intl Airport to Ko Samui is 86 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Bangkok Don Mueang Intl Airport to Ko Samui?
Currently, April is the cheapest month in which you can book a flight from Bangkok Don Mueang Intl Airport to Ko Samui (average of $31). Flying from Bangkok Don Mueang Intl Airport to Ko Samui in July is currently the most expensive (average of $55). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from DMK to USM?
Find hourly flight availability from Don Mueang Intl 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 April 9, 2026.
It’s optimal to fly from Bangkok Don Mueang Intl Airport to Ko Samui in the morning. By choosing this option you can save up to 58% on the cost of your flight, compared to a flight in the evening.
How often are flights from Bangkok to Ko Samui delayed?
About 9% of weekly flights between Bangkok and Ko Samui have experienced delays in the past year, with the average delay time being 102 minutes.
What is the most punctual flight time for Bangkok to Ko Samui flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Thursday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Bangkok to Ko Samui flights?
Over the last year, Bangkok Airways have had the lowest number of delays on this route, with just 9% of flights being delayed.
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 April 9, 2026.
Read reviews from past customers who have flown Bangkok Airways from Bangkok Don Mueang Intl Airport to Ko Samui. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.1
Boarding
8.1
Entertainment
6.3
Comfort
8.0
Crew
8.6
Food
7.3
Reviews
1 / 8
10.0
ExcellentAgata,Feb 2026
USM - DMK
Overall
8.1
Boarding
8.1
Entertainment
6.3
Comfort
8.0
Crew
8.6
Food
7.3
Reviews
1 / 8
10.0
ExcellentAgata,Feb 2026
USM - DMK
Related info for your journey
Find useful and relevant information for your journey from Don Mueang Intl to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Ko Samui?
Book flights to Ko Samui if you plan to visit one of these locationsKo Tao
Ko Pha Ngan
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Top airline flying from Don Mueang Intl to Ko Samui
Discover the top airline that operate flights from Don Mueang Intl to Ko Samui. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$149 | Average$295 | FlexibilityNo cancel fee | On-time74% |