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FSI to KSO: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → Kastoria (Kastoria National Airport)
5,985 mi
9,633 km · 5,201 nm
12h 12m
estimated nonstop flight time
+8h
time difference · heading northeast
See live FSI→KSO fares Phone-only fares on this route — call free
Flight time details
5,985 miles nonstop takes roughly 12h 12m 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
- FSI — Henry Post Army Air Field (Fort Sill) · Fort Sill, United States
- 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 FSI
- LAW · Lawton Fort Sill Regional Airport6 mi away
- DUC · Halliburton Field28 mi away
- HBR · Hobart Regional Airport44 mi away
- SPS · Sheppard Air Force Base-Wichita Falls Municipal Airport46 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 FSI from KSO?
The flight distance from Fort Sill (FSI) to Kastoria (KSO) is 5,985 miles (9,633 km, 5,201 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to KSO?
A nonstop flight takes about 12h 12m 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 Fort Sill and Kastoria?
Kastoria is 8 hours ahead of Fort Sill.
What is the cheapest way to fly from FSI to KSO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–KSO that never appear on search engines, with no booking fees.