Need help booking?
Unpublished phone-only deals available
BIS to FSI: distance & flight time
Bismarck (Bismarck Municipal Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
846 mi
1,362 km · 736 nm
2h 18m
estimated nonstop flight time
Same time
time difference · heading south
See live BIS→FSI fares Phone-only fares on this route — call free
Flight time details
846 miles nonstop takes roughly 2h 18m gate to gate, flying south. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- BIS — Bismarck Municipal Airport · Bismarck, 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 BIS
- MBG · Mobridge Municipal Airport86 mi away
- DIK · Dickinson Theodore Roosevelt Regional Airport97 mi away
- JMS · Jamestown Regional Airport98 mi away
- MOT · Minot International Airport106 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 BIS from FSI?
The flight distance from Bismarck (BIS) to Fort Sill (FSI) is 846 miles (1,362 km, 736 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BIS to FSI?
A nonstop flight takes about 2h 18m 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 cheapest way to fly from BIS to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BIS–FSI that never appear on search engines, with no booking fees.