From Cavtat bus to Dubrovnik, walk to Dubrovnik, shuttle to Dubrovnik Zob, then bus to Mostar Bus Station East. 5 h 4 min 12€. From Cavtat drive to Mostar. 2 h 19 min 17€.
Bus from Cavtat to Mostar
Libertas Dubrovnik operates a bus from Cavtat to Mostar hourly. Tickets cost $3 - $7 and the journey takes 30 min. 2 other operators also service this route.