Organised group tours to Kekova are widely available from Antalya, Side, and Alanya. They typically combine the Sunken City with visits to Myra (the ancient Lycian rock tombs) and the Church of Saint Nicholas in Demre. For visitors who want a guided overview of the region in a single day, this is a reasonable option. The trade-off is significant: you share a coach with 30–50 other tourists, the boat itinerary is fixed and rushed, and you may spend a notable portion of your day sitting in a vehicle waiting for stragglers.
A private transfer to Kekova gives you control over the most important variable: which boat you take and when. From Üçağız, you can choose a private boat hire for your group, a smaller shared local tour with more time at the ruins, or a sea-kayaking excursion that group tours cannot access. You spend your time on the water, not on a coach. If you want to linger longer at Kaleköy or squeeze in lunch at one of the village fish restaurants, you can — because your return transfer waits for you.
Private transfer suits families, couples, and small groups who want to choose their own boat operator and pace their day. It is also the more practical option for guests staying in Kemer or Kaş-adjacent areas, where the drive to Üçağız is substantially shorter than from the main resort belt and group tours are less frequent.