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FRN to FSI: distance & flight time
Fort Richardson (Bryant Army Heliport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
2,885 mi
4,642 km · 2,507 nm
6h 7m
estimated nonstop flight time
+3h
time difference · heading east
See live FRN→FSI fares Phone-only fares on this route — call free
Flight time details
2,885 miles nonstop takes roughly 6h 7m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time gain when reading arrival times on your ticket.
The two airports
- FRN — Bryant Army Heliport · Fort Richardson, 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 FRN
- EDF · Elmendorf Air Force Base5 mi away
- MRI · Merrill Field7 mi away
- ANC · Ted Stevens Anchorage International Airport13 mi away
- WWA · Wasilla Airport21 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 FRN from FSI?
The flight distance from Fort Richardson (FRN) to Fort Sill (FSI) is 2,885 miles (4,642 km, 2,507 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FRN to FSI?
A nonstop flight takes about 6h 7m 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 Richardson and Fort Sill?
Fort Sill is 3 hours ahead of Fort Richardson.
What is the cheapest way to fly from FRN to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FRN–FSI that never appear on search engines, with no booking fees.