* Άφιξη (Afíxi): This is probably the closest single word translation and is commonly used. It's a relatively formal word.
* Πρόσοδος (Prósothos): This word means "approach" or "access," and can imply arrival, particularly if it's an arrival to a place of power or importance.
* You might also use a phrase depending on the context, such as η άφιξη του πλοίου (i afixi tou ploiou) meaning "the arrival of the ship."
So, while άφιξη (Afíxi) is a good general translation, the most accurate word will depend on the specific situation.