As in any other language, there are many ways to say goodbye in Spanish. Some expressions are best used in formal situations while others are more informal (casual) in tone. Below are some common phrases.

¡Adiós! - Goodbye.
Hasta mañana. - See you tomorrow.
Hasta luego. - See you later.
Hasta pronto. - See you soon.
¡Adiós! ¡Hasta pronto!
- Good-bye! See you soon!
Nos vemos. - See you later.
Ya me despido. - It's time to say goodbye.
Gracias por todo. - Thanks for everything.
Que te cuides. - Take care.
No quiero que te vayas.
- I don't want you to go.
¡Adiós! Me voy a casa.
- Goodbye! I'm going home.
Que te vaya bien. - Have a good one.
Me dio mucho gusto conocerlo. (m)
- It was nice to meet you.
Me dio mucho gusto conocerla. (f)
- It was nice to meet you.
Un abrazo y hasta pronto.
- A hug and see you soon.
Chau - Bye

The Sentence Flashcards and Videos to the right provide many examples of how these expressions are used.