Galveston is next with 4.1 percent. According to the port, more than 3.4 million passengers will pass through its terminals this year, a number that should only increase once the new terminal opens.

A cruise to the Caribbean can now be accessed from Galveston, Texas, with this cruise line's year-round voyages featuring Texas-sized amenities.

Carnival Cruise Line celebrates 25 years of sailing from Galveston with a special event aboard Carnival Jubilee.