Need help booking?
Unpublished phone-only deals available
FSI to BUF: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → Buffalo (Buffalo Niagara International Airport)
1,200 mi
1,931 km · 1,043 nm
3h 5m
estimated nonstop flight time
+1h
time difference · heading northeast
See live FSI→BUF fares Phone-only fares on this route — call free
Flight time details
1,200 miles nonstop takes roughly 3h 5m gate to gate, flying northeast. 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
- FSI — Henry Post Army Air Field (Fort Sill) · Fort Sill, United States
- BUF — Buffalo Niagara International Airport · Buffalo, 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 BUF
- IAG · Niagara Falls International Airport16 mi away
- YYZ · Lester B. Pearson International Airport68 mi away
- YCM · Niagara District Airport28 mi away
- DKK · Chautauqua County-Dunkirk Airport41 mi away
Frequently asked questions
How far is FSI from BUF?
The flight distance from Fort Sill (FSI) to Buffalo (BUF) is 1,200 miles (1,931 km, 1,043 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to BUF?
A nonstop flight takes about 3h 5m 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 Buffalo?
Buffalo is 1 hour ahead of Fort Sill.
What is the cheapest way to fly from FSI to BUF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–BUF that never appear on search engines, with no booking fees.