Are you looking for 28 day cruises that leave from Miami, FL? As of today - August 15, 2025 - there are 4 such cruise options. These cruise options are offered by two cruise lines - Cunard (just 3 sailings, all of them on Queen Elizabeth) and Holland America (just 1 sailing on Zuiderdam).
In the following table you can see all 28 day cruises that depart from Miami sorted by departure date.
