Cheap flights from Southeast Asia to Ko Samui from €93

If you aren’t able to travel during the month of November, then book flights to Ko Samui from Southeast Asia during September instead. Flights to Ko Samui in September, while not as cheap as those in November, still average around €167.

The cheapest day to depart from Southeast Asia to Ko Samui is on a Friday when prices can be found for as low as €211. Flights from Southeast Asia to Ko Samui on a Monday will generally be more expensive and average around €250. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Our data shows that the cheapest Southeast Asia to Ko Samui flights are usually those with departure times in the afternoon. Our users have found flights to Ko Samui in the afternoon for as low as €204. In contrast, the most expensive time of day to depart to Ko Samui is in the morning when prices are around €224.

Fly from Bangkok Suvarnabhumi to Ko Samui for the best Southeast Asia - Ko Samui flight prices

You are more likely to see cheaper flights to Ko Samui from Southeast Asia when booking weeks ahead of your departure date. In general, you can expect to find flights to Ko Samui for around €207 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ko Samui from Southeast Asia for as low as €168 on momondo.

There are 3 cabin classes available to choose from on Southeast Asia to Ko Samui flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

As of February 2026, 338 flights take off from Southeast Asia and land in Ko Samui each day. The most common flight departure time for this route is 11:00, with 45% of daily flights taking off at midday.

As of February 2026, there are 2,368 flights per week flying from Southeast Asia to Ko Samui. The most common day of the week flights depart is Sun, with 15% of flights taking off on this day.