Need help booking?
Unpublished phone-only deals available
BIL to FSI: distance & flight time
Billings (Billings Logan International Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
937 mi
1,507 km · 814 nm
2h 30m
estimated nonstop flight time
+1h
time difference · heading southeast
See live BIL→FSI fares Phone-only fares on this route — call free
Flight time details
937 miles nonstop takes roughly 2h 30m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- BIL — Billings Logan International Airport · Billings, 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 BIL
- COD · Yellowstone Regional Airport92 mi away
- LVM · Mission Field92 mi away
- LWT · Lewistown Municipal Airport96 mi away
- SHR · Sheridan County Airport105 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 BIL from FSI?
The flight distance from Billings (BIL) to Fort Sill (FSI) is 937 miles (1,507 km, 814 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BIL to FSI?
A nonstop flight takes about 2h 30m 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 Billings and Fort Sill?
Fort Sill is 1 hour ahead of Billings.
What is the cheapest way to fly from BIL to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BIL–FSI that never appear on search engines, with no booking fees.