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OPO to OSN: distance & flight time
Porto (Francisco de Sá Carneiro Airport) → Osan (Osan Air Base)
6,344 mi
10,210 km · 5,513 nm
12h 54m
estimated nonstop flight time
+8h
time difference · heading northeast
See live OPO→OSN fares Phone-only fares on this route — call free
Flight time details
6,344 miles nonstop takes roughly 12h 54m 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
- OPO — Francisco de Sá Carneiro Airport · Porto, Portugal
- OSN — Osan Air Base · Osan, South Korea
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 OSN
- ICN · Incheon International Airport41 mi away
- SWU · Suwon Airport10 mi away
- SSN · Seoul Air Base (K-16)25 mi away
- GMP · Gimpo International Airport35 mi away
Frequently asked questions
How far is OPO from OSN?
The flight distance from Porto (OPO) to Osan (OSN) is 6,344 miles (10,210 km, 5,513 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OPO to OSN?
A nonstop flight takes about 12h 54m 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 Osan?
Osan is 8 hours ahead of Porto.
What is the cheapest way to fly from OPO to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OPO–OSN that never appear on search engines, with no booking fees.