Here are some other options:
* "สวัสดี" (sa-wat-dee) - This is the standard greeting in Thai, but can also be used as a farewell, meaning "goodbye" or "see you later".
* "เจอกันใหม่" (jay-gahn-mai) - This literally means "see you again", and is a more informal way to say goodbye.
* "ไปแล้ว" (bpai-laew) - This means "I'm going now" and is another informal option.
The best way to say goodbye will depend on the context and your relationship with the person you are saying goodbye to.