This research investigates the existing trade facilitation at Thailand’s international ports to understand obstacles and seek a practical development plan to improve and prepare them according to the ASEAN Economic Community. The study consists of field data collection at 9 international ports in Thailand, i.e., Bangkok (Klongtoey), BMT Pacific, TPT, Unithai, Laemchabang, Sriracha Harbour, Kerry Siam Seaport, Mabtaphut Industrial, and Songkhla. 39 Stakeholders including port operators, customs officers, freight forwarders, shipping agents, ship liner, other government officials as well as importers/exporters were interviewed to understand existing situation, obstacles, and ways to improve the goods movement process. In addition, questionnaires were distributed to freight forwarder companies to review and evaluate port management, facilities and customs procedures. Next, Singapore port, as a good practice example, was surveyed to find the gaps between it and Thailand’s ports and is used as a guideline to improve efficiency at Thailand’s ports. Lastly, port stakeholders were invited in a focus group to gather their comments. The findings from this research lead to realistic suggestions of how to improve trade facilitation at Thailand ports, both in overall and individual ports, to prepare Thailand for ASEAN Economic Community.