St. Marys Municipal Airport (IATA: STQ, ICAO: KOYM, FAA LID: OYM) is a city-owned public airport in St. Marys, in Elk County, Pennsylvania.

Since then, millions of dollars in Federal, State, and local funds have been spent on the airport.

The entire runway surface was replaced along with the repair and rehabilitation of the drainage system, lighting, taxiways, and the apron.

In the year ending October 31, 2007 the airport had 6,730 aircraft operations, average 18 per day: 85% general aviation, 15% air taxi and <1% military.

26 aircraft were then based at the airport: 80% single-engine, 4% multi-engine, 8% helicopter and 8% ultralight.