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SMN to OPO: distance & flight time
Salmon (Lemhi County Airport) → Porto (Francisco de Sá Carneiro Airport)
4,895 mi
7,878 km · 4,254 nm
10h 4m
estimated nonstop flight time
+7h
time difference · heading northeast
See live SMN→OPO fares Phone-only fares on this route — call free
Flight time details
4,895 miles nonstop takes roughly 10h 4m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time gain when reading arrival times on your ticket.
The two airports
- SMN — Lemhi County Airport · Salmon, United States
- OPO — Francisco de Sá Carneiro Airport · Porto, Portugal
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 OPO
- BGZ · Braga Municipal Aerodrome26 mi away
- VRL · Vila Real Airport50 mi away
- VSE · Aerodromo Goncalves Lobato (Viseu Airport)55 mi away
- VGO · Vigo Airport68 mi away
Frequently asked questions
How far is SMN from OPO?
The flight distance from Salmon (SMN) to Porto (OPO) is 4,895 miles (7,878 km, 4,254 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SMN to OPO?
A nonstop flight takes about 10h 4m 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 Porto?
Porto is 7 hours ahead of Salmon.
What is the cheapest way to fly from SMN to OPO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SMN–OPO that never appear on search engines, with no booking fees.