First/second-class and VIP air-con buses leave from the Eastern Bus Terminal at Ekkamai, on Sukhumvit Road, which is conveniently serviced by the BTS Skytrain. The return fare to Trat — the stopping off point for Ko Chang — ranges from 147 baht From the Trat bus terminal, take a cab or minibus to the ferry at Laem Ngop, which should cost you around 200 baht.