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KSM to IRC: distance & flight time
St Mary's (St Mary's Airport) → Circle (Circle City /New/ Airport)
636 mi
1,023 km · 552 nm
1h 51m
estimated nonstop flight time
Same time
time difference · heading northeast
See live KSM→IRC fares Phone-only fares on this route — call free
Flight time details
636 miles nonstop takes roughly 1h 51m gate to gate, flying northeast. 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
- IRC — Circle City /New/ Airport · Circle, 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 IRC
- CEM · Central Airport27 mi away
- CIK · Chalkyitsik Airport57 mi away
- FYU · Fort Yukon Airport61 mi away
- WBQ · Beaver Airport100 mi away
Frequently asked questions
How far is KSM from IRC?
The flight distance from St Mary's (KSM) to Circle (IRC) is 636 miles (1,023 km, 552 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KSM to IRC?
A nonstop flight takes about 1h 51m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from KSM to IRC?
Nonstop service on KSM–IRC depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 1h 51m nonstop estimate.
What is the cheapest way to fly from KSM to IRC?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KSM–IRC that never appear on search engines, with no booking fees.
Why are some KSM to IRC fares phone-only?
Consolidator contracts let us sell certain KSM–IRC tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.