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"Viajan" is a form of "viajar", an intransitive verb which is often translated as "to travel". "Viajen" is a form of "viajen", a phrase which is often translated as "travel". Learn more about the difference between "viajan" and "viajen" below.
viajar(
byah
-
hahr
)An intransitive verb is one that does not require a direct object (e.g., The man sneezed.).
a. to run
El metro viaja hasta las dos de la mañana los sábados.The metro runs until two in the morning on Saturdays.
viajen
A phrase is a group of words commonly used together (e.g., once upon a time).
