St Mary's Airport (KSM)

St. Mary's Airport (IATA: KSM, ICAO: PASM) is a public-use airport that serves as a critical lifeline for the remote community of St. Mary's, Alaska. Located in the Yukon-Kuskokwim Delta region, it provides essential year-round access for passengers, mail, and cargo, connecting the village to regional hubs and the rest of the state. As the primary mode of transportation in and out of the area, the airport is fundamental to the local economy and residents' access to medical care and other vital services.

The airport has a history dating back to World War II, having been activated in April 1941. Originally developed for military purposes, it was later transferred to civilian control to support the needs of the community. Its establishment was a significant event, breaking the region's near-total isolation and enabling more reliable transport than seasonal river barges. Today, it is owned and operated by the State of Alaska Department of Transportation and Public Facilities.

St. Mary's Airport is situated approximately two miles northwest of the city's central business district. The community of St. Mary's is not connected to the contiguous Alaska road system, making air travel the only practical means of year-round access. Travelers typically reach the airport from the town via a local road, using a local taxi service, a pre-arranged ride, or a private vehicle.

Operations at KSM are entirely domestic, consisting of scheduled passenger service, charter flights, and vital air cargo services. The airport primarily serves as a link to larger regional hubs, most notably Bethel (BET). Airlines providing regular service include Grant Aviation and Ryan Air, which operate smaller propeller-driven aircraft suitable for the region's conditions. Annually, the airport handles several thousand passenger enplanements, with FAA data showing over 6,500 in recent years.

The airport's facilities are functional and reflect its role as a small, rural hub. A single terminal building houses airline check-in counters, a passenger waiting area, and restrooms. Travelers should not expect amenities such as restaurants, shops, or passenger lounges. The airfield consists of a single paved runway equipped with lighting for operations in various conditions.

Travelers flying from St. Mary's should plan to arrive at least 90 minutes before their scheduled departure. Ground transportation is limited to local taxi services; it is advisable to arrange transport in advance. Weather in Western Alaska can be unpredictable and frequently causes flight delays. Visitors should build flexibility into their travel itineraries, especially when making connections to long-haul flights from larger airports.