£309 Cheap flights to Ko Samui

When planning your flight to Ko Samui, it is important to be aware that some months are not as ideal as others. Specifically, the months of January, May, or October could carry a higher chance of rain, as Ko Samui sees up to 5.1 inches (130 mm) or more. There are still things to do in Ko Samui even when it's raining, but be aware that rain is highly probable in the area. Many tourists kill time during rain and storms by going to shopping centres in the area, like Fishermans Village.

Visitors planning their holidays in Ko Samui should book their flights for February, March, or April if they are planning on visiting Lamai Beach. Another popular beach in the area is Chaweng Beach.

Most flyers found that booking tickets 80 days in advance of their planned departure date is the best time to get cheap flights to Ko Samui. During this timeframe, flight prices are around £916. Keep in mind that you might also find cheap flights to Ko Samui outside of this time window. In fact, momondo users recently found flights from United Kingdom to Ko Samui for £778.

Finding an alternative and possibly cheaper destination airport near Ko Samui is possible. If you are planning a flight to Ko Samui, consider booking flights to Surat Thani Airport (67 mi from Ko Samui city centre), Nakhon Si Thammarat Airport (73 mi from Ko Samui city centre) or Chumphon Airport (95 mi from Ko Samui city centre).

Prices vary based on where travellers are departing from, but on average, the cheapest airport to fly to in Ko Samui is Chumphon Airport where the average price is £37. Users typically find the best prices when using momondo’s Airport-to-Airport Pricing Tool.

Users booking trips to Ko Samui from Bangkok found flights 77% cheaper than the average price of 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 refresh daily.

As of September 2025, there are 18 operators available to choose from for flights to Ko Samui Airport.

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel to Ko Samui Airport.

The required travel and health documents for your Ko Samui Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ko Samui Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.