Saying Goodbye

adiós (m) good bye
chau (m) ciao
con permiso excuse me
despedirse to say goodbye, to take leave of someone
encantado (m) nice to meet you
gracias (f) thank you
hasta luego so long
hasta mañana see you tomorrow
hasta pronto see you soon
muchas gracias (f) thank you very much
mucho gusto nice to meet you
nos vemos see you later

No me digas adiós, sino hasta pronto. Don't say bye, say see you soon!
Dale las gracias a tu profesora. Dáselas! Tell your professor thank you, tell him!
Cuando veas a tu jefe, dile que me dio mucho gusto conocerlo. When you see your boss, tell him that it was a pleasure to meet him.
Con permiso, con permiso nos dicen los neoyorquinos en el metro. The Neoyorquinos say, "Excuse me, excuse me" on the metro.
Nos vemos en la fiesta. See you at the party.

Saying goodbye
There are many ways to say goodbye in Spanish. Some expressions are best used in formal situations and others are more familiar in tone. Here are some of the most common phrases:

Adiós. Used in both formal and familiar situations; "goodbye."
Hasta luego. More familiar than adiós: "see you later."
Nos vemos. "See you,' informal.
Hasta mañana. Familiar and formal, "see you tomorrow."
Chau/ciao. Comes from the Italian "ciao." Familiar, "bye."
Ya me despido. "It's time to say goodbye," familiar and formal.
Me dio mucho gusto conocerlo/la. "It was nice to meet you," formal.
Muchas gracias por todo. "Thanks for everything," formal.
Nos divertimos mucho. "We had a lot of fun," familiar and formal.
Me la pasé bien. "I had a good time," familiar.