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FSI to SDU: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → Rio De Janeiro (Santos Dumont Airport)
5,378 mi
8,655 km · 4,673 nm
11h 1m
estimated nonstop flight time
+2h
time difference · heading southeast
See live FSI→SDU fares Phone-only fares on this route — call free
Flight time details
5,378 miles nonstop takes roughly 11h 1m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-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
- SDU — Santos Dumont Airport · Rio De Janeiro, Brazil
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 SDU
- GIG · Rio Galeão – Tom Jobim International Airport9 mi away
- QNV · Aeroclube Airport22 mi away
- SNZ · Santa Cruz Air Force Base35 mi away
- CFB · Cabo Frio Airport69 mi away
Frequently asked questions
How far is FSI from SDU?
The flight distance from Fort Sill (FSI) to Rio De Janeiro (SDU) is 5,378 miles (8,655 km, 4,673 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to SDU?
A nonstop flight takes about 11h 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 Fort Sill and Rio De Janeiro?
Rio De Janeiro is 2 hours ahead of Fort Sill.
What is the cheapest way to fly from FSI to SDU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–SDU that never appear on search engines, with no booking fees.