Take advantage of your layover with this guided tour of San Salvador. After being picked up at the airport, head to the city and visit the main attractions such as Iglesia El Rosario and the cathedral. Plus, stop by the Volcan de San Salvador to see the crater of an active volcano. Finish the tour with locally made pupusas (dough pockets typically stuffed with chopped pork, cheese, beans, zucchini, and other vegetables). Head back to the airport two hours before your flight.