Samui International Airport (VTSM/USM), Koh Samui, Thailand has 2 private jet terminals serving business and general aviation. Its 2,060 m runway takes aircraft up to heavy business jets (Gulfstream G550, Falcon 900). Customs and immigration are cleared on the field. In-flight catering can be arranged on site. With 2 operators on the field you can compare handling quotes before committing to a turn.
Geographic coordinates: 9.54780, 100.06230. Use the FBO Finder map to plan a route and compare nearby airports.