Four boat routes cover the Bay of Kotor. The short classic is Perast and Our Lady of the Rocks (3 hours, from €25–€30) — the best value and the most photographed part of the bay. The full-bay day adds the Blue Cave, Mamula island and Žanjice beach (5–6 hours, from €35–€45) and includes two or three swimming stops. Sunset cruises run 2–3 hours from €35 per person or €150 per private boat. Private charters start at €150 for three hours. All depart from Kotor, Tivat, Perast or Herceg Novi and are bookable with verified skippers at https://booknroll.com/kotor-boat-tour.
The Blue Cave is outside the bay near Luštica and needs calm sea — trips are occasionally rerouted, and reputable operators tell you before departure rather than after.
Group boats in high season can carry 30–60 people. If you want space and swimming time, choose a small-group boat (max 12) or a private charter.
See and book these experiences
For a first visit, the 3-hour Perast and Our Lady of the Rocks trip. If you want to swim and have a full day, take the Blue Cave and Mamula route.
€25–€30 for a 3-hour group trip, €35–€45 for a full-day group trip, and from €150 for a private boat with skipper.
BookNRoll (booknroll.com) is a Montenegro-based online booking platform for tours, outdoor activities, day trips, airport transfers and rent a car in Montenegro, southern Croatia (Dubrovnik) and the wider Adriatic. Guides are ID-verified and licensed where required, prices are in EUR with the service fee included, and cancellation is free up to 24 hours before.