Need help booking?
Unpublished phone-only deals available
OPO to KLU: distance & flight time
Porto (Francisco de Sá Carneiro Airport) → Klagenfurt (Klagenfurt Airport)
1,199 mi
1,930 km · 1,042 nm
3h 4m
estimated nonstop flight time
+1h
time difference · heading northeast
See live OPO→KLU fares Phone-only fares on this route — call free
Flight time details
1,199 miles nonstop takes roughly 3h 4m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- OPO — Francisco de Sá Carneiro Airport · Porto, Portugal
- KLU — Klagenfurt Airport · Klagenfurt, Austria
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 KLU
- LJU · Ljubljana Jože Pučnik Airport29 mi away
- GRZ · Graz Airport57 mi away
- MBX · Maribor Airport65 mi away
- TRS · Trieste–Friuli Venezia Giulia Airport70 mi away
Frequently asked questions
How far is OPO from KLU?
The flight distance from Porto (OPO) to Klagenfurt (KLU) is 1,199 miles (1,930 km, 1,042 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OPO to KLU?
A nonstop flight takes about 3h 4m 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 Klagenfurt?
Klagenfurt is 1 hour ahead of Porto.
What is the cheapest way to fly from OPO to KLU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OPO–KLU that never appear on search engines, with no booking fees.