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CEM to KSM: distance & flight time
Central (Central Airport) → St Mary's (St Mary's Airport)
612 mi
984 km · 532 nm
1h 48m
estimated nonstop flight time
Same time
time difference · heading west
See live CEM→KSM fares Phone-only fares on this route — call free
Flight time details
612 miles nonstop takes roughly 1h 48m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- CEM — Central Airport · Central, United States
- KSM — St Mary's Airport · St Mary's, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near CEM
- IRC · Circle City /New/ Airport27 mi away
- FYU · Fort Yukon Airport70 mi away
- CIK · Chalkyitsik Airport80 mi away
- EIL · Eielson Air Force Base92 mi away
Near KSM
- MOU · Mountain Village Airport13 mi away
- MLL · Marshall Don Hunter Sr Airport44 mi away
- AUK · Alakanuk Airport61 mi away
- EMK · Emmonak Airport63 mi away
Frequently asked questions
How far is CEM from KSM?
The flight distance from Central (CEM) to St Mary's (KSM) is 612 miles (984 km, 532 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CEM to KSM?
A nonstop flight takes about 1h 48m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the cheapest way to fly from CEM to KSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CEM–KSM that never appear on search engines, with no booking fees.