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FSI to TYS: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → Knoxville (McGhee Tyson Airport)
816 mi
1,314 km · 709 nm
2h 14m
estimated nonstop flight time
+1h
time difference · heading east
See live FSI→TYS fares Phone-only fares on this route — call free
Flight time details
816 miles nonstop takes roughly 2h 14m gate to gate, flying east. 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
- TYS — McGhee Tyson Airport · Knoxville, 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 TYS
- MMI · McMinn County Airport43 mi away
- HDI · Hardwick Field62 mi away
- CSV · Crossville Memorial Whitson Field62 mi away
- AVL · Asheville Regional Airport86 mi away
Frequently asked questions
How far is FSI from TYS?
The flight distance from Fort Sill (FSI) to Knoxville (TYS) is 816 miles (1,314 km, 709 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to TYS?
A nonstop flight takes about 2h 14m 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 Knoxville?
Knoxville is 1 hour ahead of Fort Sill.
What is the cheapest way to fly from FSI to TYS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–TYS that never appear on search engines, with no booking fees.