By Boat

Most ferries operate from Laem Ngop, which has 3 piers. The Laem Ngop pier is approximately 700 metres west of Laem Ngop. The ‘Centrepoint’ pier is located about 3.5 km north-west of Laem Ngop. These piers serve both vehicle and passenger ferries.
Koh Chang vehicle ferry pier is located in Thammachat Bay (Ao Thammachat), around 15 km west of Laem Ngop.
All piers on Koh Chang are situated on the eastern side of the island. The major piers are the 2 Dan Kao piers, Tha Dan Kao and Tha Ferry Dan Kao, who handles most of the traffic. To take a boat from Laem Ngop  to the Dan Kao piers take around 45 minutes. the car ferry from Laem Ngop take around 1 hour and arrives at the Tha Ferry Dan Kao pier, situated 400 minutes southeast of the Tha Dan Kao pier. The car ferry from Thaachat Bay stops at the Koh Chang Ferry Pier (The Ferry Ko Chang) in the Sapparot Bay (Ao Sapparot), 3 kilometres northwest from the Dan Kao piers

By Taxi or Limousine

From Bangkok or Suvarnabhumi International Airport the ride takes a total of about 5-5.5 hours by Limousine or Taxi. Most Taxi’s will decline this ride as the risk of empty return is too high for them. Most airport limousines will deliver you at the hotel or resort on Koh Chang, especially if they can make it back to the mainland before the last ferry sails.