Cheap flights from Chiang Mai to Ko Samui from $168

In general, September is the cheapest month to fly from Chiang Mai to Ko Samui. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $172. 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 $251.

Our data shows that Thursday is the least expensive day to fly to Ko Samui. Tickets to fly out on this day can be as low as $408. Flights from Chiang Mai to Ko Samui on a Wednesday will generally be more expensive and average around $491. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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 4% on your flight if you consider stops on a Chiang Mai to Ko Samui flight.

As of September 2026, prices for Chiang Mai to Ko Samui flights are approximately 20% more expensive when compared to flights at the same time last year.

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 115 minutes.

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

Sunday is statistically the day of the week which experiences the fewest number of delays on this flight route. Tuesday 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 6% of their flights experiencing any sort of delay.

6 flights are operational daily from Chiang Mai to Ko Samui as of September 2026. The most popular departure time for this route is 11:00AM, with 100% of flights per day taking off at noon.

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.