USAir, which now has daily service to Belize from Charlotte, has been running regular fare sales from East Coast and Midwest cities (but not much from the West). Here was the latest fare sale which ended a couple of days ago.
Baltimore, MD Belize City, Belize $269
Boston, MA Belize City, Belize $289
Charlotte, NC Belize City, Belize $269
Indianapolis, IN Belize City, Belize $309
New York LaGuardia, NY Belize City, Belize $289
Philadelphia, PA Belize City, Belize $289
Pittsburgh, PA Belize City, Belize $309
Raleigh/Durham, NC Belize City, Belize $309
Washington National, DC Belize City, Belize $269
Departures to Belize valid daily Saturday 5/3 - Sunday 6/22/03 with return travel valid daily Friday 5/9 - Sunday 6/29/03.