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KSM to CHU: distance & flight time
St Mary's (St Mary's Airport) → Chuathbaluk (Chuathbaluk Airport)
137 mi
221 km · 119 nm
50m
estimated nonstop flight time
Same time
time difference · heading east
See live KSM→CHU fares Phone-only fares on this route — call free
Flight time details
137 miles nonstop takes roughly 50m 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
- CHU — Chuathbaluk Airport · Chuathbaluk, 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 CHU
- ANI · Aniak Airport11 mi away
- KLG · Kalskag Airport37 mi away
- HCR · Holy Cross Airport46 mi away
- SLQ · Sleetmute Airport68 mi away
Frequently asked questions
How far is KSM from CHU?
The flight distance from St Mary's (KSM) to Chuathbaluk (CHU) is 137 miles (221 km, 119 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KSM to CHU?
A nonstop flight takes about 50m 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 CHU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KSM–CHU that never appear on search engines, with no booking fees.