Cheap flights from Chiang Mai to Ko Samui from £122

The cheapest month to fly to Ko Samui from Chiang Mai is in June. Flight prices, which tend to average around £204, 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 September to fly from Chiang Mai, when ticket prices are also cheap, with an average price of £213.

Fly from Chiang Mai to Ko Samui for the best Chiang Mai - Ko Samui flight prices

No. A direct flight is the cheapest option for a flight between Chiang Mai to Ko Samui.

Historically, on average around 3% of flights between Chiang Mai and Ko Samui have experienced a delay on any given week. The average delay length over the past 12 months has been 79 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the morning 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. Saturday 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 3% of their flights experiencing any sort of delay.

As of April 2026, 6 flights take off from Chiang Mai and land in Ko Samui each day. The most common flight departure time for this route is 11:00, with 100% of daily flights taking off at midday.

As of April 2026, there are 42 flights per week flying from Chiang Mai to Ko Samui. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.