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OBU to KSM: distance & flight time
Kobuk (Kobuk Airport) → St Mary's (St Mary's Airport)
385 mi
620 km · 335 nm
1h 29m
estimated nonstop flight time
Same time
time difference · heading southwest
See live OBU→KSM fares Phone-only fares on this route — call free
Flight time details
385 miles nonstop takes roughly 1h 29m gate to gate, flying southwest. 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
- OBU — Kobuk Airport · Kobuk, 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 OBU
- SHG · Shungnak Airport7 mi away
- ABL · Ambler Airport29 mi away
- HSL · Huslia Airport85 mi away
- WLK · Selawik Airport87 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 OBU from KSM?
The flight distance from Kobuk (OBU) to St Mary's (KSM) is 385 miles (620 km, 335 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OBU to KSM?
A nonstop flight takes about 1h 29m 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 OBU to KSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OBU–KSM that never appear on search engines, with no booking fees.