Need help booking?
Unpublished phone-only deals available
RIA to FSI: distance & flight time
Santa Maria (Santa Maria Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
5,316 mi
8,556 km · 4,620 nm
10h 53m
estimated nonstop flight time
-2h
time difference · heading northwest
See live RIA→FSI fares Phone-only fares on this route — call free
Flight time details
5,316 miles nonstop takes roughly 10h 53m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time set-back when reading arrival times on your ticket.
The two airports
- RIA — Santa Maria Airport · Santa Maria, Brazil
- 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 RIA
- GEL · Santo Ângelo Airport103 mi away
- BGX · Comandante Gustavo Kraemer Airport119 mi away
- PFB · Lauro Kurtz Airport131 mi away
- SRA · Santa Rosa Airport134 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 RIA from FSI?
The flight distance from Santa Maria (RIA) to Fort Sill (FSI) is 5,316 miles (8,556 km, 4,620 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RIA to FSI?
A nonstop flight takes about 10h 53m 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 Santa Maria and Fort Sill?
Fort Sill is 2 hours behind Santa Maria.
What is the cheapest way to fly from RIA to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RIA–FSI that never appear on search engines, with no booking fees.