Are you looking for 15 day cruises that leave from Miami, FL? As of today - July 11, 2025 - there are 5 such cruise options. These cruise options are offered by two cruise lines - Norwegian (NCL) (total of 4 sailings, 2 on Norwegian Joy, 1 on Norwegian Pearl and 1 on Norwegian Star) and Holland America (just 1 sailing on Zuiderdam).
In the following table you can see all 15 day cruises that depart from Miami sorted by departure date.