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OPO to FSM: distance & flight time
Porto (Francisco de Sá Carneiro Airport) → Fort Smith (Fort Smith Regional Airport)
4,470 mi
7,194 km · 3,884 nm
9h 14m
estimated nonstop flight time
-6h
time difference · heading northwest
See live OPO→FSM fares Phone-only fares on this route — call free
Flight time details
4,470 miles nonstop takes roughly 9h 14m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time set-back when reading arrival times on your ticket.
The two airports
- OPO — Francisco de Sá Carneiro Airport · Porto, Portugal
- FSM — Fort Smith Regional Airport · Fort Smith, 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 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
Near FSM
- FYV · Drake Field47 mi away
- XNA · Northwest Arkansas Regional Airport65 mi away
- MLC · Mc Alester Regional Airport86 mi away
- OKM · Okmulgee Regional Airport92 mi away
Frequently asked questions
How far is OPO from FSM?
The flight distance from Porto (OPO) to Fort Smith (FSM) is 4,470 miles (7,194 km, 3,884 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OPO to FSM?
A nonstop flight takes about 9h 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 Porto and Fort Smith?
Fort Smith is 6 hours behind Porto.
What is the cheapest way to fly from OPO to FSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OPO–FSM that never appear on search engines, with no booking fees.