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SFZ to OPO: distance & flight time
Smithfield (North Central State Airport) → Porto (Francisco de Sá Carneiro Airport)
3,170 mi
5,102 km · 2,755 nm
6h 41m
estimated nonstop flight time
+5h
time difference · heading east
See live SFZ→OPO fares Phone-only fares on this route — call free
Flight time details
3,170 miles nonstop takes roughly 6h 41m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 5-hour time gain when reading arrival times on your ticket.
The two airports
- SFZ — North Central State Airport · Smithfield, 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 SFZ
- BOS · General Edward Lawrence Logan International Airport39 mi away
- PVD · Theodore Francis Green State Airport14 mi away
- NCO · Quonset State Airport23 mi away
- OWD · Norwood Memorial Airport25 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 SFZ from OPO?
The flight distance from Smithfield (SFZ) to Porto (OPO) is 3,170 miles (5,102 km, 2,755 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SFZ to OPO?
A nonstop flight takes about 6h 41m 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 Smithfield and Porto?
Porto is 5 hours ahead of Smithfield.
What is the cheapest way to fly from SFZ to OPO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SFZ–OPO that never appear on search engines, with no booking fees.