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FSI to JSY: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → Syros Island (Syros Airport)
6,273 mi
10,095 km · 5,451 nm
12h 46m
estimated nonstop flight time
+8h
time difference · heading northeast
See live FSI→JSY fares Phone-only fares on this route — call free
Flight time details
6,273 miles nonstop takes roughly 12h 46m 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
- JSY — Syros Airport · Syros Island, 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 JSY
- JMK · Mikonos Airport22 mi away
- PAS · Paros National Airport29 mi away
- JNX · Naxos Airport33 mi away
- MLO · Milos Airport57 mi away
Frequently asked questions
How far is FSI from JSY?
The flight distance from Fort Sill (FSI) to Syros Island (JSY) is 6,273 miles (10,095 km, 5,451 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to JSY?
A nonstop flight takes about 12h 46m 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 Syros Island?
Syros Island is 8 hours ahead of Fort Sill.
What is the cheapest way to fly from FSI to JSY?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–JSY that never appear on search engines, with no booking fees.