The airline will fly to Aruba, the Bahamas and Jamaica from Atlanta, Baltimore and Orlando, beginning July 1.
Officials say this expansion is possible following the company's merger with AirTran Airways, which currently flies to those destinations.
According to officials, in the first phase of the company's international conversion plan, AirTran Airways will continue service between Atlanta and Nassau, between Chicago Midway and Montego Bay, as well as flights to and from Cancun, Los Cabos, and Mexico City, Mexico, and Punta Cana, Dominican Republic.
By the end of 2014, the carrier plans to complete the launch of Southwest Airlines service to the remaining four international destinations.
