Anchorage (ANC) to St Mary's (KSM)
Flight time
≈ 1h 41m
Bearing
284° W
Anchorage (ANC) to St Mary's (KSM) is 441 miles (709 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies ANC–KSM
Filed traffic dataIn May 2026, Iliamna Air Taxi was the only carrier flying nonstop ANC–KSM; the Pilatus PC-12 was the most common aircraft at 100% of departures; flights ran 64% full.
Departures
4
May 2026
Seats
36
both directions
Passengers
23
both directions
Load factor
63.9%
RPM ÷ ASM
Who flies ANC–KSM?
Iliamna Air Taxi was the only carrier to fly nonstop ANC–KSM in May 2026 (4 departures).
- V8
Iliamna Air Taxi
4 departures · 36 seats
Share of departures100.0%63.9%
Load
What plane flies ANC–KSM?
In May 2026, the Pilatus PC-12 flew 100% of ANC–KSM departures.
- Pilatus PC-12
4 departures · 63.9% load
100.0%
How has ANC–KSM traffic changed?
Nonstop ANC–KSM departures fell from 8 in June 2025 to 4 in May 2026.
Monthly nonstop ANC–KSM traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
8 departures · 61 passengers
26.3%
Load
July 2025
2 departures · 0 passengers
0.0%
Load
August 2025
0 departures · 0 passengers
—
Load
September 2025
2 departures · 2 passengers
11.1%
Load
October 2025
0 departures · 0 passengers
—
Load
November 2025
0 departures · 0 passengers
—
Load
December 2025
2 departures · 14 passengers
77.8%
Load
January 2026
8 departures · 44 passengers
61.1%
Load
February 2026
10 departures · 51 passengers
56.7%
Load
March 2026
6 departures · 18 passengers
33.3%
Load
April 2026
2 departures · 11 passengers
61.1%
Load
May 2026
4 departures · 23 passengers
63.9%
Load
By direction
Each direction is filed separately — they rarely match.
ANC → KSM
72.2% full
2 departures · 13 passengers
KSM → ANC
55.6% full
2 departures · 10 passengers
Nonstop ANC–KSM traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through May 2026; filings from 2025. Public domain (US Government work).
The airports
Anchorage
US
Ted Stevens Anchorage International Airport
Coordinates
61.18°N, 149.99°W
Hemisphere
N · W
Frequently asked
How far is Anchorage (ANC) from St Mary's (KSM)?
ANC to KSM is 441 miles (709 km / 383 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from ANC to KSM?
A nonstop covers the 441-mile great-circle distance in roughly 1h 41m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies ANC–KSM?
In May 2026, the Pilatus PC-12 flew the largest share of departures (100.0%).
What mileage do I earn flying ANC–KSM?
Distance-based programs credit off the 441-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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