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FSI to PRM: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → Portimao (Portimão Airport)
4,822 mi
7,761 km · 4,190 nm
9h 55m
estimated nonstop flight time
+6h
time difference · heading northeast
See live FSI→PRM fares Phone-only fares on this route — call free
Flight time details
4,822 miles nonstop takes roughly 9h 55m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-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
- PRM — Portimão Airport · Portimao, Portugal
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 PRM
- FAO · Faro Airport35 mi away
- BYJ · Beja Airport / Airbase73 mi away
- CAT · Cascais Airport117 mi away
- LIS · Humberto Delgado Airport (Lisbon Portela Airport)117 mi away
Frequently asked questions
How far is FSI from PRM?
The flight distance from Fort Sill (FSI) to Portimao (PRM) is 4,822 miles (7,761 km, 4,190 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to PRM?
A nonstop flight takes about 9h 55m 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 Portimao?
Portimao is 6 hours ahead of Fort Sill.
What is the cheapest way to fly from FSI to PRM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–PRM that never appear on search engines, with no booking fees.