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FSI to GNT: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → Grants (Grants-Milan Municipal Airport)
539 mi
868 km · 469 nm
1h 38m
estimated nonstop flight time
-1h
time difference · heading west
See live FSI→GNT fares Phone-only fares on this route — call free
Flight time details
539 miles nonstop takes roughly 1h 38m 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
- FSI — Henry Post Army Air Field (Fort Sill) · Fort Sill, United States
- GNT — Grants-Milan Municipal Airport · Grants, 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 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 GNT
- GUP · Gallup Municipal Airport55 mi away
- ABQ · Albuquerque International Sunport74 mi away
- LAM · Los Alamos Airport104 mi away
- SAF · Santa Fe Municipal Airport107 mi away
Frequently asked questions
How far is FSI from GNT?
The flight distance from Fort Sill (FSI) to Grants (GNT) is 539 miles (868 km, 469 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to GNT?
A nonstop flight takes about 1h 38m 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 Grants?
Grants is 1 hour behind Fort Sill.
What is the cheapest way to fly from FSI to GNT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–GNT that never appear on search engines, with no booking fees.