Dubrovnik Airport is located around 30 minutes outside of the Old Town, in Čilipi.
Bus: Shuttle buses are scheduled to run from the airport every 20-30 minutes after an arrival, stopping at Pile Gate, by the Old Town, and at the main bus station. A single ticket costs 40Kn, and a return costs 70Kn.
Or, you can take the local bus services Nos. 11, 27 or 38, pay the driver 33Kn.
A taxi will cost you 250kn - 290kn.