Most cruises beginning and ending in the same location are considered closed-loop, meaning they begin and end at the same port in the United States and travel within the Western Hemisphere.

Cruises that start and end at the same port are known as "closed-loop" cruises. This is the most common format for vacation sailings, particularly in the United States, as it simplifies logistics for passengers who can park their cars at the terminal and return to them a week later. In 2026, closed-loop cruises are especially popular because of specific U.S. customs regulations that allow citizens to travel with just a birth certificate and photo ID to certain destinations like the Caribbean (though a passport is always recommended). Conversely, there are "one-way" or "open-jaw" cruises, which start in one city and end in another. These are common for itineraries like Alaskan cruises (e.g., Vancouver to Whittier) or European river cruises (e.g., Amsterdam to Budapest). There are also "repositioning" cruises, where a ship moves between seasonal regions (like the Mediterranean to the Caribbean) and ends in a completely different continent. For travelers, the choice depends on whether they prefer the convenience of a round trip or the opportunity to explore a new city at the end of their maritime journey.