Green’s Dictionary of Slang

hasta la bye-bye phr.

(US) see you later.

1990		S. Morgan Homeboy 339: I guess this is sorta hasta la bye bye.
1998		M.E. Moynahan Once Upon a Myster 17: Its ‘hasta la bye-bye’ time. Get her out of here!
2000		L. Zangpo Pulling Down the Sky 40: If we wanted a divorce, she said, we could spit on each other’s shoes, say hasta la bye-bye, and be on our way.