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KSM to PTA: distance & flight time
St Mary's (St Mary's Airport) → Port alsworth (Port Alsworth Airport)
325 mi
524 km · 283 nm
1h 19m
estimated nonstop flight time
Same time
time difference · heading east
See live KSM→PTA fares Phone-only fares on this route — call free
Flight time details
325 miles nonstop takes roughly 1h 19m gate to gate, flying east. 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
- KSM — St Mary's Airport · St Mary's, United States
- PTA — Port Alsworth Airport · Port alsworth, 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 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
Near PTA
- NNL · Nondalton Airport23 mi away
- ILI · Iliamna Airport37 mi away
- BMX · Big Mountain Airport67 mi away
- SVW · Sparrevohn LRRS Airport75 mi away
Frequently asked questions
How far is KSM from PTA?
The flight distance from St Mary's (KSM) to Port alsworth (PTA) is 325 miles (524 km, 283 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KSM to PTA?
A nonstop flight takes about 1h 19m 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 KSM to PTA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KSM–PTA that never appear on search engines, with no booking fees.