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PHN to FSI: distance & flight time
Port Huron (St Clair County International Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
1,025 mi
1,650 km · 891 nm
2h 42m
estimated nonstop flight time
-1h
time difference · heading southwest
See live PHN→FSI fares Phone-only fares on this route — call free
Flight time details
1,025 miles nonstop takes roughly 2h 42m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- PHN — St Clair County International Airport · Port Huron, 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 PHN
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 PHN from FSI?
The flight distance from Port Huron (PHN) to Fort Sill (FSI) is 1,025 miles (1,650 km, 891 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from PHN to FSI?
A nonstop flight takes about 2h 42m 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 Port Huron and Fort Sill?
Fort Sill is 1 hour behind Port Huron.
What is the cheapest way to fly from PHN to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on PHN–FSI that never appear on search engines, with no booking fees.