Which airport is closer to its central business district, Mercedita Airport or MidAmerica St. Louis Airport?
Mercedita Airport: Mercedita Airport (IATA: PSE, ICAO: TJPS, FAA LID: PSE) is a public use airport located three nautical miles (6 km) east of the central business district of Ponce, Puerto Rico. MidAmerica St. Louis Airport:  It is located 14 nautical miles (16 mi, 26 km) east of the central business district of Belleville, in St. Clair County, Illinois, United States.
Mercedita Airport