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HRL to FSI: distance & flight time
Harlingen (Valley International Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
584 mi
939 km · 507 nm
1h 44m
estimated nonstop flight time
Same time
time difference · heading north
See live HRL→FSI fares Phone-only fares on this route — call free
Flight time details
584 miles nonstop takes roughly 1h 44m gate to gate, flying north. 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
- HRL — Valley International Airport · Harlingen, 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 HRL
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 HRL from FSI?
The flight distance from Harlingen (HRL) to Fort Sill (FSI) is 584 miles (939 km, 507 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HRL to FSI?
A nonstop flight takes about 1h 44m 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 HRL to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HRL–FSI that never appear on search engines, with no booking fees.