Sixaola Airport (ICAO: MRSX) is a small general aviation airstrip located in Sixaola, a town in the Talamanca canton of Limón Province, Costa Rica. The facility sits near the Sixaola River, which forms the natural border between Costa Rica and Panama, making the area a notable international crossing point. The airport serves primarily light aircraft and occasional charter or private flights, supporting the remote communities of the Caribbean lowlands and banana-producing regions. It does not operate scheduled commercial airline service and lacks an IATA code, reflecting its limited role in civil aviation infrastructure. Sixaola itself is better known as a land border crossing than as an aviation hub, and the airport functions as a supplementary access point for the surrounding rural and indigenous territories rather than a major transit facility.