Cheap flights from Chiang Mai to Ko Samui from £133

The cheapest month to fly to Ko Samui from Chiang Mai is in September. Flight prices, which tend to average around £127, are often lower during this time because this is during the off-season. If you don’t want to visit Ko Samui in September, then you should wait until June to fly from Chiang Mai, when ticket prices are also cheap, with an average price of £186.

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

There is only 1 cabin class available to choose from on Chiang Mai to Ko Samui flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 10% on your flight if you consider stops on a Chiang Mai to Ko Samui flight.

Historically, on average around 6% 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 114 minutes.

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

Sunday 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 6% of their flights experiencing any sort of delay.

As of September 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 September 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.