San Salvador Layover Tour: City Sightseeing and El Boqueron National Park. Make the most of your long layover in San Salvador by taking 4 hours to tour the city and visit the majestic volcano affectionately known as El Boquerón, or ‘Big Mouth.’ Get picked up from Monseñor Óscar Arnulfo Romero International Airport and driven into this intriguing city to enjoy the Metropolitan Cathedral and Salvador del Mundo Square, among other top attractions. From there, travel about 15 miles out of the city to gawk at the imposing volcano. You’ll be transported back to the airport in time to get your connecting flight. If you want, book this as a private tour for undivided attention from your guide. Book now and Save 20%: San Salvador Layover Tour: City Sightseeing and El Boqueron National Park.