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GRB to FSI: distance & flight time
Green Bay (Austin Straubel International Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
871 mi
1,402 km · 757 nm
2h 22m
estimated nonstop flight time
Same time
time difference · heading southwest
See live GRB→FSI fares Phone-only fares on this route — call free
Flight time details
871 miles nonstop takes roughly 2h 22m gate to gate, flying southwest. 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
- GRB — Austin Straubel International Airport · Green Bay, 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 GRB
- ATW · Appleton International Airport25 mi away
- OSH · Wittman Regional Airport41 mi away
- MNM · Menominee Regional Airport50 mi away
- SBM · Sheboygan County Memorial Airport51 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 GRB from FSI?
The flight distance from Green Bay (GRB) to Fort Sill (FSI) is 871 miles (1,402 km, 757 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRB to FSI?
A nonstop flight takes about 2h 22m 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 GRB to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRB–FSI that never appear on search engines, with no booking fees.