Cheap flights from Bangkok to Ko Samui from £59

The cheapest month to fly to Ko Samui from Bangkok is in November. Flight prices, which tend to average around £142, are often lower during this time because this is during the off-season. If you don’t want to visit Ko Samui in November, then you should wait until September to fly from Bangkok, when ticket prices are also cheap, with an average price of £147.

According to our data, Monday is the cheapest day to fly to Ko Samui from Bangkok. The lowest ticket price found for a Monday departure recently was £168. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to Ko Samui on Thursday is £211.

Our most recent data shows that the best time of day to fly to Ko Samui is in the evening. Flights from Bangkok to Ko Samui during this time can be as low as £168. Flights in the afternoon are often more expensive, with an average ticket price of £198.

Fly from Bangkok Suvarnabhumi 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 £184 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 £148 on momondo.

Bangkok Airways is the most popular carrier operating from Bangkok to Ko Samui

Bangkok Airways, Thai Lion Air and Thai AirAsia are the top three most popular airlines that fly to Ko Samui from Bangkok according to our data. Bangkok Airways is the first choice among our users, with 93% of people opting to fly with this airline when travelling to Ko Samui. Keep in mind that there are 5 different airlines that fly to Ko Samui on a routine basis, so you have a few additional options to choose from.

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 321 flights per day flying from Bangkok to Ko Samui. The most common time of day flights depart is 15:00, with 47% of flights taking off in the afternoon.

As of April 2026, 2,249 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.