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SDY to OPO: distance & flight time
Sidney (Sidney - Richland Regional Airport) → Porto (Francisco de Sá Carneiro Airport)
4,419 mi
7,111 km · 3,840 nm
9h 8m
estimated nonstop flight time
+7h
time difference · heading northeast
See live SDY→OPO fares Phone-only fares on this route — call free
Flight time details
4,419 miles nonstop takes roughly 9h 8m 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
- SDY — Sidney - Richland Regional Airport · Sidney, 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 SDY
- ISN · Sloulin Field International Airport41 mi away
- GDV · Dawson Community Airport49 mi away
- OLF · L M Clayton Airport69 mi away
- DIK · Dickinson Theodore Roosevelt Regional Airport91 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 SDY from OPO?
The flight distance from Sidney (SDY) to Porto (OPO) is 4,419 miles (7,111 km, 3,840 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SDY to OPO?
A nonstop flight takes about 9h 8m 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 Sidney and Porto?
Porto is 7 hours ahead of Sidney.
What is the cheapest way to fly from SDY to OPO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SDY–OPO that never appear on search engines, with no booking fees.