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OSP to FSI: distance & flight time
Slupsk (Redzikowo Air Base) → Fort Sill (Henry Post Army Air Field (Fort Sill))
5,190 mi
8,352 km · 4,510 nm
10h 39m
estimated nonstop flight time
-7h
time difference · heading northwest
See live OSP→FSI fares Phone-only fares on this route — call free
Flight time details
5,190 miles nonstop takes roughly 10h 39m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time set-back when reading arrival times on your ticket.
The two airports
- OSP — Redzikowo Air Base · Slupsk, Poland
- FSI — Henry Post Army Air Field (Fort Sill) · Fort Sill, United States
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 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
Frequently asked questions
How far is OSP from FSI?
The flight distance from Slupsk (OSP) to Fort Sill (FSI) is 5,190 miles (8,352 km, 4,510 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSP to FSI?
A nonstop flight takes about 10h 39m 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 Fort Sill?
Fort Sill is 7 hours behind Slupsk.
What is the cheapest way to fly from OSP to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSP–FSI that never appear on search engines, with no booking fees.