Cheap flights from Bangkok to Ko Samui from $115

The month of November is, on average, the cheapest month to fly to Ko Samui from Bangkok, with most prices found around $282. If you aren’t able to travel during the month of November, then book flights to Ko Samui from Bangkok during September instead. Flights to Ko Samui in September, while not as cheap as those in November, still average around $290.

According to our data, Wednesday is the cheapest day to fly to Ko Samui from Bangkok. The lowest ticket price found for a Wednesday departure recently was $294. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Bangkok to Ko Samui for around $426.

Our data shows that the cheapest Bangkok 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 $337. Flights in the evening are often more expensive, with an average ticket price of $520.

Fly from Utapao Rayong Pattaya to Ko Samui for the best Bangkok - Ko Samui flight prices

You are more likely to see cheaper flights to Ko Samui from Bangkok when booking weeks ahead of your departure date. In general, you can expect to find flights to Ko Samui for around $351 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 Bangkok for as low as $285 on momondo.

There are 2 cabin classes available to choose from on Bangkok to Ko Samui flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Historically, on average around 17% of flights between Bangkok and Ko Samui have experienced a delay on any given week. The average delay length over the past 12 months has been 93 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Wednesday is statistically the day of the week that experiences the fewest delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, Bangkok Airways have had the fewest delays on this route over the last 12 months, with about 17% of their flights experiencing any sort of delay.

As of April 2026, there are 327 flights per day flying from Bangkok to Ko Samui. The most common time of day flights depart is 14:00, with 48% of flights taking off in the afternoon.

As of April 2026, 2,295 flights take off from Bangkok and land in Ko Samui each week. The most common flight departure day for this route is Tue, with 15% of weekly flights taking off on this day.