ทางเครื่องบิน

Bangkok Airways flies 3 times a day from Bangkok’s Suvarnabhumi Airport to Trat. The flights depart at 09:00, 12:15, and 16:35, and takes 1 hour and 5 minutes.
Direct to door-to-door minibus transfer from Trat airport to Koh Chang resorts cost 475 baht/person/one way and 800 baht/person/return including the ferry crossing.

From Bangkok’s Suvarnabhumi Airport, take the free express shuttle bus from outside the arrivals concourse to the airport’s own bus terminal, and from there the next available bus to either Trat or Chantaburi.

ทางรถทัวร์

From Bangkok , most economical way to get to Laem Ngop (where the Ko Chang ferry piers are) is to take a 1st class bus from the Eastern (Ekamai) Bus Terminal direct to the Laem Ngop piers. The fare is 268 baht and takes just over 5 hours. Departures from Ekamai are at 07:45, 09:45 and return at 14:00, 16:00. Subject to seat availability, this bus can also be boarded at Chantaburi and at Suvarnabhumi Airport. However, as of 1 Dec. 2009, there is a more comfortable way to travel from Bangkok Airport to Koh Chang: the new bus line #392 starts from the airport at 07:30 and returns from Koh Chang at 13:30.
Tickets can be bought online at Suvarnabhumit Burapha Bus Company and more departures will be added in the 2nd or 3rd month of operation.
Alternatively, there are 1st class and 2nd class services from both the Eastern Bus Terminal (Ekamai) and Northern Bus Terminal (Mo Chit) direct to Trat, and frequent songthaew services from Trat to Laem Ngop (approx. 30 min. and 50 baht/person). Departures from Ekamai are more frequent than from Mo Chit. If coming by bus from the south, the #511 air-con bus can be used to connect directly between Bangkok’s Southern (Sai Tai Mai) and Eastern (Ekamai) bus terminals.

Connection in Trat can also be used if coming from Pattaya (2nd class bus/4 hours/around 200 baht).

There are direct minibus services to Laem Ngop from Pattaya, Ban Phae (gateway to Ko Samet), and Bangkok’s Khao San Road and Victory Monument (in front of the Phayathai hospital). They, however, are less comfortable and spacious than public buses, and you may be charged significantly more by travel agencies selling tickets to these, as often with any tourist-oriented transportation in Thailand.

It may be also be possible to proceed directly to Laem Ngop by minibus or songthaew from the Hat Lek/Koh Kong border crossing with southern Cambodia, depending on the time of year, time of day, etc – enquire locally. Price around 120 baht (one way) from the border to Trat bus station.