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SMN to DCA: distance & flight time
Salmon (Lemhi County Airport) → Washington (Ronald Reagan Washington National Airport)
1,923 mi
3,095 km · 1,671 nm
4h 14m
estimated nonstop flight time
+2h
time difference · heading east
See live SMN→DCA fares Phone-only fares on this route — call free
Flight time details
1,923 miles nonstop takes roughly 4h 14m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time gain when reading arrival times on your ticket.
The two airports
- SMN — Lemhi County Airport · Salmon, United States
- DCA — Ronald Reagan Washington National Airport · Washington, 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 DCA
Frequently asked questions
How far is SMN from DCA?
The flight distance from Salmon (SMN) to Washington (DCA) is 1,923 miles (3,095 km, 1,671 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SMN to DCA?
A nonstop flight takes about 4h 14m 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 Washington?
Washington is 2 hours ahead of Salmon.
What is the cheapest way to fly from SMN to DCA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SMN–DCA that never appear on search engines, with no booking fees.