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OPO to PAO: distance & flight time
Porto (Francisco de Sá Carneiro Airport) → Palo Alto (Palo Alto Airport of Santa Clara County)
5,568 mi
8,960 km · 4,838 nm
11h 23m
estimated nonstop flight time
-8h
time difference · heading northwest
See live OPO→PAO fares Phone-only fares on this route — call free
Flight time details
5,568 miles nonstop takes roughly 11h 23m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time set-back when reading arrival times on your ticket.
The two airports
- OPO — Francisco de Sá Carneiro Airport · Porto, Portugal
- PAO — Palo Alto Airport of Santa Clara County · Palo Alto, 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 PAO
- SFO · San Francisco International Airport18 mi away
- NUQ · Moffett Federal Airfield5 mi away
- SQL · San Carlos Airport8 mi away
- SJC · Norman Y. Mineta San Jose International Airport12 mi away
Frequently asked questions
How far is OPO from PAO?
The flight distance from Porto (OPO) to Palo Alto (PAO) is 5,568 miles (8,960 km, 4,838 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OPO to PAO?
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 Porto and Palo Alto?
Palo Alto is 8 hours behind Porto.
What is the cheapest way to fly from OPO to PAO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OPO–PAO that never appear on search engines, with no booking fees.