Cheap flights from Rayong to Ko Samui from £63

The cheapest month to fly to Ko Samui from Rayong is in June. Flight prices, which tend to average around £138, are often lower during this time because this is during the off-season. If you don’t want to visit Ko Samui in June, then you should wait until May to fly from Rayong, when ticket prices are also cheap, with an average price of £139.

According to our data, Sunday is the cheapest day to fly to Ko Samui from Rayong. The lowest ticket price found for a Sunday departure recently was £191. 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 £221.

Our most recent data shows that the best time of day to fly to Ko Samui is in the evening. Flights from Rayong to Ko Samui during this time can be as low as £191. Flights in the afternoon are often more expensive, with an average ticket price of £219.

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

You are more likely to see cheaper flights to Ko Samui from Rayong when booking weeks ahead of your departure date. In general, you can expect to find flights to Ko Samui for around £199 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 Rayong for as low as £126 on momondo.

There is only 1 cabin class available to choose from on Rayong to Ko Samui 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 Utapao Rayong Pattaya to Ko Samui

Bangkok Airways, Thai AirAsia and Thai Lion Air are the top three most popular airlines that fly to Ko Samui from Rayong 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 14% of flights between Rayong and Ko Samui have experienced a delay on any given week. The average delay length over the past 12 months has been 72 minutes.

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

Tuesday 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 14% of their flights experiencing any sort of delay.

4 flights are operational daily from Rayong to Ko Samui as of September 2026. The most popular departure time for this route is 17:00, with 100% of flights per day taking off in the afternoon.

As of September 2026, there are 28 flights per week flying from Rayong to Ko Samui. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.