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NXX to FSI: distance & flight time
Willow Grove (Willow Grove Naval Air Station/Joint Reserve Base) → Fort Sill (Henry Post Army Air Field (Fort Sill))
1,328 mi
2,137 km · 1,154 nm
3h 21m
estimated nonstop flight time
-1h
time difference · heading west
See live NXX→FSI fares Phone-only fares on this route — call free
Flight time details
1,328 miles nonstop takes roughly 3h 21m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- NXX — Willow Grove Naval Air Station/Joint Reserve Base · Willow Grove, United States
- 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 NXX
- PHL · Philadelphia International Airport23 mi away
- BBX · Wings Field8 mi away
- DYL · Doylestown Airport9 mi away
- PNE · Northeast Philadelphia Airport11 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 NXX from FSI?
The flight distance from Willow Grove (NXX) to Fort Sill (FSI) is 1,328 miles (2,137 km, 1,154 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from NXX to FSI?
A nonstop flight takes about 3h 21m 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 Willow Grove and Fort Sill?
Fort Sill is 1 hour behind Willow Grove.
What is the cheapest way to fly from NXX to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on NXX–FSI that never appear on search engines, with no booking fees.