Which charter airline based in Miami-Dade county uses a Boeing 737-800?
JetAmerica:  On March 10, 2009, the airline announced a number of public scheduled charter flights from underutilized airports to Newark and Minneapolis–St. Paul using a Miami Air International Boeing 737-800 to begin on June 30, 2009. Miami Air International: Miami Air International is an American charter airline based in Miami-Dade County, Florida, United States.
Miami Air International