Need help booking?
Unpublished phone-only deals available
ACH to FSI: distance & flight time
Altenrhein (St Gallen Altenrhein Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
5,228 mi
8,413 km · 4,543 nm
10h 43m
estimated nonstop flight time
-7h
time difference · heading northwest
See live ACH→FSI fares Phone-only fares on this route — call free
Flight time details
5,228 miles nonstop takes roughly 10h 43m 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
- ACH — St Gallen Altenrhein Airport · Altenrhein, Switzerland
- 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 ACH
- HOH · Hohenems-Dornbirn Airport9 mi away
- FDH · Friedrichshafen Airport13 mi away
- ZRH · Zürich Airport47 mi away
- FMM · Memmingen Allgau Airport47 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 ACH from FSI?
The flight distance from Altenrhein (ACH) to Fort Sill (FSI) is 5,228 miles (8,413 km, 4,543 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ACH to FSI?
A nonstop flight takes about 10h 43m 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 Altenrhein and Fort Sill?
Fort Sill is 7 hours behind Altenrhein.
What is the cheapest way to fly from ACH to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ACH–FSI that never appear on search engines, with no booking fees.