The easiest way to get to Koh Chang island from Bangkok is to fly from Bangkok Airport to Trat Airport in the Trat Province.
The flight from Bangkok to Trat Airport takes around 45 minutes
Once you get to Trat airport you can get a transfer from the airport by minibus for 500 Baht which includes the ferry transfer across to Koh Chang and drop off at your hotel on Koh Chang island. The mini-bus takes around 13 minutes to get from Trat aiport to the ferry terminal and then drives onto the ferry. The ferry takes around 30 minutes to get across to Koh Chang island
Once the ferry crosses over to Koh Chang, the mini-bus will drop you at your hotel.
The mini-bus will take the following times to get to the various areas of Koh Chang:
10 minutes to White Sand Beach
25 minutes to Klong Prao Beach
You can drive from Bangkok to the ferry port to cross over to Koh Chang in around 5 hours. Add onto of that the 30 minute ferry ride across to Koh Chang and then the drive to you hotel.
Bangkok Airways - Bangkok Airways flies from Bangkok to Koh Chang 3 times everyday. Bangkok Airways uses small AT76 twin propellor planes which holds 70 passengers. The flight takes around 45 minutes.
Bangkok Airways AT76 aircraft which flies from Bangkok to Trat Airport