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FSI to KLU: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → Klagenfurt (Klagenfurt Airport)
5,441 mi
8,757 km · 4,728 nm
11h 8m
estimated nonstop flight time
+7h
time difference · heading northeast
See live FSI→KLU fares Phone-only fares on this route — call free
Flight time details
5,441 miles nonstop takes roughly 11h 8m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-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
- 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 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 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 FSI from KLU?
The flight distance from Fort Sill (FSI) to Klagenfurt (KLU) is 5,441 miles (8,757 km, 4,728 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to KLU?
A nonstop flight takes about 11h 8m 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 Klagenfurt?
Klagenfurt is 7 hours ahead of Fort Sill.
What is the cheapest way to fly from FSI to KLU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–KLU that never appear on search engines, with no booking fees.