Greenville, South Carolina is serviced by two airports. Greenville-Spartanburg International Airport (GSP) is located along I-85, approximately 15 minutes from the heart of Downtown Greenville. Air service is frequent and convenient, with service provided by seven major airlines: Allegiant Airlines, American Airlines, Avelo Airlines, Breeze Airways, Delta Air Lines, Southwest Airlines, and United Airlines. The Greenville Downtown Airport (GMU) is the busiest general aviation airport in South Carolina, providing a well-maintained and convenient landing spot for business, charter, and personal aircraft.