Southwest announces Charleston, Greenville flights

Southwest Airlines is expanding its schedule in South Carolina with seven weekday departures each from Charleston and Greenville.

The discount carrier said Wednesday it would have three flights between Charleston and Baltimore-Washington Airport. There are also two roundtrip flights to Chicago Midway and one each to Nashville and Houston.

From Greenville-Spartanburg, Southwest says it will have two flights each to BWI and Chicago Midway and one each to Nashville, Houston and Orlando.

The airline's South Carolina service begins March 13. Tourism officials have estimated Southwest service to Charleston will save travelers an estimated $180 million a year in air fares.

South Carolina's coast is the catalyst for the state's $18 billion tourism industry.