$404 Cheap flights to Ko Samui

If you are planning a flight to Ko Samui and are looking to avoid the rain, you should avoid traveling during the months of January, May, and October. These months will typically see 5.1 inches or more of rain, meaning that rain is likely. If you do run into rain while in Ko Samui, there are still things to do and ways to enjoy your trip. Many tourists kill time during rain and storms by going to shopping centers in the area, like Fishermans Village.

February, March, or April is widely considered the best time to visit Ko Samui to go to area beaches like Lamai Beach. Consider visiting Chaweng Beach during your Ko Samui visit as well.

In general, February is the cheapest month to fly from United States to Ko Samui. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,355. If you don’t want to visit Ko Samui in February, then you should wait until September to fly from United States, when ticket prices are also cheap, with an average price of $1,476.

Those flying to Ko Samui could potentially find better pricing at Surat Thani Airport (67 mi from Ko Samui city center), Nakhon Si Thammarat Airport (73 mi from Ko Samui city center) or Chumphon Airport (95 mi from Ko Samui city center) depending on the month and departure airport.

Nakhon Si Thammarat Airport has an average price of $43 per person and is typically the cheapest airport to fly into when visiting Ko Samui. This average price does vary based on departure city. Try momondo’s Airport-to-Airport Pricing Tool to find the cheapest flight.

$28 is the cheapest deal found on momondo in the last two weeks for a flight to Ko Samui. This flight is from Bangkok and is 51% cheaper than most flights to Ko Samui. To find the cheapest price to Ko Samui from your area, use momondo’s Airport-to-Airport Pricing Tool.

Prices for flights to Ko Samui Airport are refreshed on a daily basis.

There are 15 operators available for flights to Ko Samui Airport as of February 2026.

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel to Ko Samui Airport.

The necessary travel and health documents for your Ko Samui Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.