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FSI to JSI: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → Skiathos (Skiathos Island National Airport)
6,131 mi
9,867 km · 5,328 nm
12h 29m
estimated nonstop flight time
+8h
time difference · heading northeast
See live FSI→JSI fares Phone-only fares on this route — call free
Flight time details
6,131 miles nonstop takes roughly 12h 29m 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
- JSI — Skiathos Island National Airport · Skiathos, 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 JSI
- VOL · Nea Anchialos Airport38 mi away
- SKU · Skiros Airport55 mi away
- LRA · Larisa Airport64 mi away
- ATH · Eleftherios Venizelos International Airport89 mi away
Frequently asked questions
How far is FSI from JSI?
The flight distance from Fort Sill (FSI) to Skiathos (JSI) is 6,131 miles (9,867 km, 5,328 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to JSI?
A nonstop flight takes about 12h 29m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from FSI to JSI?
Nonstop service on FSI–JSI depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 12h 29m nonstop estimate.
What is the time difference between Fort Sill and Skiathos?
Skiathos is 8 hours ahead of Fort Sill.
What is the cheapest way to fly from FSI to JSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–JSI that never appear on search engines, with no booking fees.
Why are some FSI to JSI fares phone-only?
Consolidator contracts let us sell certain FSI–JSI tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.