Chalk's operations base was at Watson Island, adjacent to the Port of Miami near downtown Miami, for 75 years, but it was forced to move most of its flights to Fort Lauderdale-Hollywood International Airport after September 11, 2001, because of security concerns around the port. Chalk's International Airlines operates services from Fort Lauderdale and West Palm Beach to the following internationally scheduled destinations (as of May 2007): Marsh Harbour, Treasure Cay, Freeport, Bimini and Nassau