How to go bangkok airport to khochang trat?

Kho Chang Island is located only 330 kilometres east of the capital and is a favourite weekend destination for the people from Bangkok, who need about 4 hours by car on the partly 4-lane highway. For foreign visitors access to Kohchang Island has become easy with the new mainland airport in Trat that opened in April 2003. The airport is owned by Bangkok Airways and they currently operate 2 flights on a daily basis. Minibus transfer services to Ao Thammachat, the nearest ferry pier (approx 15 kms) are provided by Bangkok Airways.