Need help booking?
Unpublished phone-only deals available
OSP to KSO: distance & flight time
Slupsk (Redzikowo Air Base) → Kastoria (Kastoria National Airport)
989 mi
1,591 km · 859 nm
2h 37m
estimated nonstop flight time
+1h
time difference · heading south
See live OSP→KSO fares Phone-only fares on this route — call free
Flight time details
989 miles nonstop takes roughly 2h 37m gate to gate, flying south. 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
- OSP — Redzikowo Air Base · Slupsk, Poland
- KSO — Kastoria National Airport · Kastoria, Greece
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 OSP
- GDN · Gdańsk Lech Wałęsa Airport55 mi away
- QYD · Oksywie Military Air Base57 mi away
- RNN · Bornholm Airport102 mi away
- BZG · Bydgoszcz Ignacy Jan Paderewski Airport102 mi away
Near KSO
- KZI · Filippos Airport31 mi away
- IOA · Ioannina Airport57 mi away
- OHD · Ohrid St. Paul the Apostle Airport58 mi away
- LRA · Larisa Airport83 mi away
Frequently asked questions
How far is OSP from KSO?
The flight distance from Slupsk (OSP) to Kastoria (KSO) is 989 miles (1,591 km, 859 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSP to KSO?
A nonstop flight takes about 2h 37m 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 Slupsk and Kastoria?
Kastoria is 1 hour ahead of Slupsk.
What is the cheapest way to fly from OSP to KSO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSP–KSO that never appear on search engines, with no booking fees.