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OPO to SWO: distance & flight time
Porto (Francisco de Sá Carneiro Airport) → Stillwater (Stillwater Regional Airport)
4,564 mi
7,344 km · 3,966 nm
9h 25m
estimated nonstop flight time
-6h
time difference · heading northwest
See live OPO→SWO fares Phone-only fares on this route — call free
Flight time details
4,564 miles nonstop takes roughly 9h 25m 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
- SWO — Stillwater Regional Airport · Stillwater, 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 SWO
- CUH · Cushing Municipal Airport23 mi away
- PNC · Ponca City Regional Airport39 mi away
- END · Vance Air Force Base48 mi away
- TIK · Tinker Air Force Base54 mi away
Frequently asked questions
How far is OPO from SWO?
The flight distance from Porto (OPO) to Stillwater (SWO) is 4,564 miles (7,344 km, 3,966 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OPO to SWO?
A nonstop flight takes about 9h 25m 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 Stillwater?
Stillwater is 6 hours behind Porto.
What is the cheapest way to fly from OPO to SWO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OPO–SWO that never appear on search engines, with no booking fees.