Cheap flights from Ko Samui to Bangkok from $138

If you aren’t able to travel during the month of February, then book flights to Bangkok from Ko Samui during September instead. Flights to Bangkok in September, while not as cheap as those in February, still average around $196.

On average, the least expensive day to fly to Bangkok from Ko Samui is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $232. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Ko Samui to Bangkok on a Tuesday will generally be more expensive and average around $826. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

According to our data, the cheapest time of day to fly to Bangkok is at noon. momondo users have found flights departing from Ko Samui to Bangkok at noon for as low as $188. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets in the evening because they tend to be around $793. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to Bangkok from Ko Samui when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok for around $248 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok from Ko Samui for as low as $128 on momondo.

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

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

Bangkok Airways, Thai Lion Air and Thai AirAsia are the top three most popular airlines that fly to Bangkok from Ko Samui according to our data. Bangkok Airways is the first choice among our users, with 74% of people opting to fly with this airline when traveling to Bangkok. Keep in mind that there are 3 different airlines that fly to Bangkok on a routine basis, so you have a few additional options to choose from.

Historically, on average around 13% of flights between Ko Samui and Bangkok have experienced a delay on any given week. The average delay length over the past 12 months has been 95 minutes.

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

Wednesday is statistically the day of the week which experiences the fewest number of 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 least number of delays on this route over the last 12 months; with about 13% of their flights experiencing any sort of delay.

The number of flights available between Ko Samui and Bangkok is 325 per day as of March 2026. The most frequent departure time is 7:00PM, with 39% of daily flights leaving in the afternoon.

As of March 2026, there are 2,281 flights per week flying from Ko Samui to Bangkok. The most common day of the week flights depart is Sat, with 16% of flights taking off on this day.