Located three miles west of downtown, Greater Rochester International Airport (ROC) is the fourth busiest airport in the state of New York, handling about 2.3 million passengers in 2013. The airport has three runways and one passenger terminal with two concourses with 22 gates. Delta Air Lines has the largest market share of all the carriers that fly to the airport. Other airlines include JetBlue Airways, Southwest Airlines and United Airlines. Scheduled service is available between Rochester International Airport and more than 15 US destinations as well as Toronto, Canada. Travelers arriving at ROC have several ground transportation options, including taxicabs, free hotel shuttles, shared-ride shuttles, Rochester Transit Service (RTS) buses and rental cars.