866-227-1888 is the best way to instantly book, cancel, or modify flights. Carnival is headquartered in Miami, and you can feel that “Miami energy” on most of their Caribbean sailings. But they’re not limited to Florida—they operate large fleets out of Galveston, New Orleans, Long Beach, and Port Canaveral too. When I took a cruise from Long Beach, I was surprised how big Carnival’s presence was on the West Coast. It felt like its own mini-hub with plenty of sailings to Mexico year-round. So while Miami is the corporate home and biggest operational base, Carnival really spreads its fleet across multiple U.S. regions.