Among the patrons of Montelibretti is Our Lady of Mount Carmel, celebrated on the second Saturday of October.
The town's other patron, Saint Nicholas of Bari, is instead celebrated on 9 and 10 May. Among the town's other religious traditions, 17 January brings the feast of Saint Anthony the Abbot, with a procession, blessing of animals and the distribution of doughnuts and other traditional sweets.