Airports / Alaska / KSM
St Mary's Airport.
St Mary's, Alaska · 312 ft elevation. A private-aviation gateway on the Bravo register.
4.2/5
Google rating
5 ratings
0
Operators based
312
Elevation ft
Google rating
Google reviews
Field elevation
Nearest alternate
Field standing
11 nm
To the nearest alternate
Mountain Village Airport (MOU), 3 fields within 50 nm.
Overview
St Mary's Airport (PASM / KSM) sits in St Mary's, Alaska, where it functions as a general aviation field. Field elevation is 312 feet above sea level. Scheduled carriers operate here, and the field also sees regular private and charter activity.
While no charter operators list KSM as their home base, the field is reachable for repositioned charter aircraft from nearby bases. The closest alternate fields are Mountain Village Airport (MOU, 11 nm), Pilot Station Airport (PQS, 12 nm), and Marshall Don Hunter Sr Airport (MLL, 38 nm). The field has 2 runways, the longest 5,997-foot unpaved runway, long enough for charter aircraft up to turboprops.
Trip costs from KSM are driven by the aircraft category flown and how far it must reposition. Browse operators flying from the area or estimate a trip cost from KSM to plan your flight.
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Field capability
ICAO
PASM
IATA
KSM
FAA / Local
KSM
Elevation
312 ft
Coordinates
62.0605° N · 163.3020° W
Airspace
E · EchoClass E, EchoControlled airspace reaches the surface for instrument approaches, but there is no control tower on the field.Source: FAA NASR class airspace
Size
Small
Scheduled svc
Yes
Elevation vs AK fields
state range 2–3,318 ft
At 312 ft, KSM sits higher than 70% of the 285 Alaska fields on the register.
Runways & aircraft access
2 runways
longest 5,997 ft
- 17/355,997 ft × 150 ftOtherLighted
- 07/251,520 ft × 60 ftOtherLighted
Which aircraft can operate here
vs longest runway 5,997 ft
KSM's 5,997 ft runway typically supports charter aircraft up to turboprops.
- Turboprop3,000 ft
- Light Jet3,500 ft
- Midsize Jet4,500 ft
- Super-Midsize Jet5,000 ft
- Heavy Jet5,500 ft
- VIP Airliner6,000 ft
Class minimums are sea-level planning rules of thumb. A specific aircraft's balanced-field length varies with weight, temperature, and field elevation. Confirm performance with the operator.
Access & alternates
Closest alternate fields by great-circle distance, every listing links to its own field brief.
- 11nmMOUMountain Village AirportMountain Village
- 12nmPQSPilot Station AirportPilot Station
- 38nmMLLMarshall Don Hunter Sr AirportMarshall
- 51nmSXPNunam Iqua AirportNunam Iqua
- 54nmAUKAlakanuk AirportAlakanuk
- 55nmEMKEmmonak AirportEmmonak
Location
Open the full mapPASM · St Mary's Airport · St Mary's, AK
Flight times from here
Approximate nonstop block times from KSM on a typical midsize charter jet. Faster classes trim these; add positioning and taxi for the real schedule.
| Destination | Distance | Block time |
|---|---|---|
| Anchorage (ANC) | 383 nm | 1h 17m |
| Seattle (SEA) | 1,629 nm | 4h 11m |
| San Francisco (SFO) | 2,098 nm | 5h 17m |
| Jackson Hole (JAC) | 2,123 nm | 5h 20m |
| Salt Lake City (SLC) | 2,220 nm | 5h 34m |
| Las Vegas (LAS) | 2,364 nm | 5h 54m |
| Los Angeles (VNY) | 2,372 nm | 5h 55m |
| Vail / Eagle (EGE) | 2,416 nm | 6h 1m |
Common questions
- What size private jets can use KSM?
- St Mary's Airport's longest runway is 5,997 ft, which typically supports charter aircraft up to turboprops. Lighter classes (turboprops, light and midsize jets) operate comfortably; confirm exact performance for a specific tail with the operator, since balanced-field length shifts with weight, temperature, and elevation.
- What is the longest runway at KSM?
- St Mary's Airport has 2 runways; the longest measures 5,997 ft and is lit for night operations.
- What is the nearest major airport to KSM?
- The closest alternate is Mountain Village Airport (MOU), about 11 nm away, followed by Pilot Station Airport (PQS) at 12 nm. Operators often position aircraft between these fields depending on ramp space and availability.
- How long is a flight from KSM to major cities?
- Typical block times on a midsize jet: Anchorage about 1h 17m (383 nm), Seattle about 4h 11m (1,629 nm), San Francisco about 5h 17m (2,098 nm). Faster classes trim these times; add positioning and taxi for the real schedule.