Monte Alto Airport (ICAO: MRMA) is a small general aviation airstrip located near Abangares, in the Guanacaste province of northwestern Costa Rica. It serves local light aircraft operations and provides access to the surrounding rural and mining communities in the region. The airport has no scheduled commercial airline service and operates primarily as a private or charter facility. It is one of many small airstrips that support general aviation connectivity across Costa Rica's interior and coastal regions.