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AVR to FSI: distance & flight time
Alverca (Alverca Air Base) → Fort Sill (Henry Post Army Air Field (Fort Sill))
4,744 mi
7,635 km · 4,122 nm
9h 46m
estimated nonstop flight time
-6h
time difference · heading northwest
See live AVR→FSI fares Phone-only fares on this route — call free
Flight time details
4,744 miles nonstop takes roughly 9h 46m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time set-back when reading arrival times on your ticket.
The two airports
- AVR — Alverca Air Base · Alverca, Portugal
- 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 AVR
- LIS · Humberto Delgado Airport (Lisbon Portela Airport)9 mi away
- CAT · Cascais Airport21 mi away
- QLR · Monte Real Air Base66 mi away
- BYJ · Beja Airport / Airbase81 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 AVR from FSI?
The flight distance from Alverca (AVR) to Fort Sill (FSI) is 4,744 miles (7,635 km, 4,122 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from AVR to FSI?
A nonstop flight takes about 9h 46m 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 Alverca and Fort Sill?
Fort Sill is 6 hours behind Alverca.
What is the cheapest way to fly from AVR to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on AVR–FSI that never appear on search engines, with no booking fees.