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SMN to DUC: distance & flight time
Salmon (Lemhi County Airport) → Duncan (Halliburton Field)
1,117 mi
1,798 km · 971 nm
2h 54m
estimated nonstop flight time
+1h
time difference · heading southeast
See live SMN→DUC fares Phone-only fares on this route — call free
Flight time details
1,117 miles nonstop takes roughly 2h 54m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- SMN — Lemhi County Airport · Salmon, United States
- DUC — Halliburton Field · Duncan, 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 SMN
- BTM · Bert Mooney Airport88 mi away
- MYL · McCall Municipal Airport110 mi away
- SUN · Friedman Memorial Airport114 mi away
- MSO · Missoula International Airport124 mi away
Near DUC
Frequently asked questions
How far is SMN from DUC?
The flight distance from Salmon (SMN) to Duncan (DUC) is 1,117 miles (1,798 km, 971 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SMN to DUC?
A nonstop flight takes about 2h 54m 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 time difference between Salmon and Duncan?
Duncan is 1 hour ahead of Salmon.
What is the cheapest way to fly from SMN to DUC?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SMN–DUC that never appear on search engines, with no booking fees.