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THL to FSI: distance & flight time
Tachilek (Tachileik Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
8,442 mi
13,585 km · 7,336 nm
17h 1m
estimated nonstop flight time
-11.5h
time difference · heading north
See live THL→FSI fares Phone-only fares on this route — call free
Flight time details
8,442 miles nonstop takes roughly 17h 1m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11.5-hour time set-back when reading arrival times on your ticket.
The two airports
- THL — Tachileik Airport · Tachilek, Burma
- 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 THL
- HOE · Ban Huoeisay Airport36 mi away
- CEI · Chiang Rai International Airport37 mi away
- MOG · Mong Hsat Airport44 mi away
- KET · Kengtung Airport60 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 THL from FSI?
The flight distance from Tachilek (THL) to Fort Sill (FSI) is 8,442 miles (13,585 km, 7,336 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from THL to FSI?
A nonstop flight takes about 17h 1m 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 Tachilek and Fort Sill?
Fort Sill is 11.5 hours behind Tachilek.
What is the cheapest way to fly from THL to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on THL–FSI that never appear on search engines, with no booking fees.