Atmautluak (ATT) to St Mary's (KSM)
Flight time
≈ 0h 59m
Bearing
338° N
Atmautluak (ATT) to St Mary's (KSM) is 89 miles (144 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies ATT–KSM
Filed traffic dataIn June 2026, Ryan Air operated the most departures, one of 2 carriers flying nonstop ATT–KSM; the Cessna C206 was the most common aircraft at 100% of departures; flights ran 0% full.
Departures
2
June 2026
Seats
8
both directions
Passengers
0
both directions
Load factor
0.0%
RPM ÷ ASM
Who flies ATT–KSM?
Ryan Air operated the most nonstop ATT–KSM departures in June 2026 (1), one of 2 carriers on the route.
- 7S
Ryan Air
1 departures · 1 seats
Share of departures50.0%0.0%
Load
- K2
Yute Commuter Service
1 departures · 7 seats
Share of departures50.0%0.0%
Load
What plane flies ATT–KSM?
In June 2026, the Cessna C206 flew 100% of ATT–KSM departures.
- Cessna C206
2 departures · 0.0% load
100.0%
How has ATT–KSM traffic changed?
Nonstop ATT–KSM departures held steady at about 2 a month between July 2025 and June 2026.
Monthly nonstop ATT–KSM traffic, trailing 12 months through June 2026. Bars scale to the busiest month; months with no filed service show as zero.
July 2025
2 departures · 0 passengers
0.0%
Load
August 2025
2 departures · 0 passengers
0.0%
Load
September 2025
4 departures · 0 passengers
0.0%
Load
October 2025
2 departures · 1 passengers
14.3%
Load
November 2025
7 departures · 0 passengers
0.0%
Load
December 2025
0 departures · 0 passengers
—
Load
January 2026
3 departures · 0 passengers
0.0%
Load
February 2026
2 departures · 0 passengers
0.0%
Load
March 2026
1 departures · 0 passengers
0.0%
Load
April 2026
0 departures · 0 passengers
—
Load
May 2026
7 departures · 8 passengers
17.0%
Load
June 2026
2 departures · 0 passengers
0.0%
Load
Nonstop ATT–KSM traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through June 2026; filings from 2025. Public domain (US Government work).
The airports
Frequently asked
How far is Atmautluak (ATT) from St Mary's (KSM)?
ATT to KSM is 89 miles (144 km / 78 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from ATT to KSM?
A nonstop covers the 89-mile great-circle distance in roughly 0h 59m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies ATT–KSM?
In June 2026, the Cessna C206 flew the largest share of departures (100.0%).
What mileage do I earn flying ATT–KSM?
Distance-based programs credit off the 89-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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