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FSI to TNN: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → Tainan (Tainan Airport)
7,720 mi
12,424 km · 6,708 nm
15h 36m
estimated nonstop flight time
+13h
time difference · heading northwest
See live FSI→TNN fares Phone-only fares on this route — call free
Flight time details
7,720 miles nonstop takes roughly 15h 36m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-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
- TNN — Tainan Airport · Tainan, Taiwan
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 TNN
- PIF · Pingtung North Airport25 mi away
- KHH · Kaohsiung International Airport27 mi away
- CYI · Chiayi Airport37 mi away
- WOT · Wang-an Airport53 mi away
Frequently asked questions
How far is FSI from TNN?
The flight distance from Fort Sill (FSI) to Tainan (TNN) is 7,720 miles (12,424 km, 6,708 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to TNN?
A nonstop flight takes about 15h 36m 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 Tainan?
Tainan is 13 hours ahead of Fort Sill.
What is the cheapest way to fly from FSI to TNN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–TNN that never appear on search engines, with no booking fees.