vs 

QUICK ANSWER
"Que pasara" is a phrase which is often translated as "happen", and "a pasar" is a phrase which is often translated as "to happen". Learn more about the difference between "que pasara" and "a pasar" below.
que pasara(
keh
 
pah
-
sah
-
rah
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. happen
¿Cómo pudiste dejar que pasara algo así?How could you let something like this happen?
Copyright © 2025 Dictionary Media Group, Inc.
a pasar(
ah
 
pah
-
sahr
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. to happen
¿Sabes qué va a pasar? - No, dímelo tú.Do you know what's going to happen? - No, you tell me.
Copyright © 2025 Dictionary Media Group, Inc.