"We really wanted [Fort Lauderdale-to-Havana] to work, especially being South Florida's hometown airline ... and the ultra-low cost leader to the Caribbean, but the costs of serving Havana continue to outweigh the demand for service," said Bob Fornaro, Spirit's president and CEO, in a statement. "Due to overcapacity and the additional costs associated with flying to Cuba, we don't find it sustainable to continue this service while maintaining our commitment to pass along ultra-low fares to our customers."