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SFO to OPO: distance & flight time
San Francisco (San Francisco International Airport) → Porto (Francisco de Sá Carneiro Airport)
5,570 mi
8,964 km · 4,840 nm
11h 23m
estimated nonstop flight time
+8h
time difference · heading northeast
See live SFO→OPO fares Phone-only fares on this route — call free
Flight time details
5,570 miles nonstop takes roughly 11h 23m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time gain when reading arrival times on your ticket.
The two airports
- SFO — San Francisco International Airport · San Francisco, 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 SFO
- SQL · San Carlos Airport10 mi away
- HAF · Half Moon Bay Airport10 mi away
- OAK · Metropolitan Oakland International Airport11 mi away
- NGZ · Alameda Naval Air Station12 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 SFO from OPO?
The flight distance from San Francisco (SFO) to Porto (OPO) is 5,570 miles (8,964 km, 4,840 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SFO to OPO?
A nonstop flight takes about 11h 23m 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 San Francisco and Porto?
Porto is 8 hours ahead of San Francisco.
What is the cheapest way to fly from SFO to OPO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SFO–OPO that never appear on search engines, with no booking fees.