There is a bus station in the city of Sa Dec that connects it to other cities such as Ho Chi Minh (three hours), Cao Lanh (45 minutes) and Vinh Long (one hour). These buses run every day to and fro. There are also taxi services available from other cities such as Ho Chi Minh, the charges for these may differ on the basis of operators.
Sa Dec is a small city and the best way to explore it is by foot if you have the time and energy. Otherwise there are Tuktuks you can hire. Bicycles are available for rent to commute within the city.