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BYI to FSI: distance & flight time
Burley (Burley Municipal Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
991 mi
1,594 km · 861 nm
2h 37m
estimated nonstop flight time
—
time difference · heading southeast
See live BYI→FSI fares Phone-only fares on this route — call free
Flight time details
991 miles nonstop takes roughly 2h 37m gate to gate, flying southeast. 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
- BYI — Burley Municipal Airport · Burley, 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 BYI
- TWF · Joslin Field Magic Valley Regional Airport37 mi away
- PIH · Pocatello Regional Airport65 mi away
- SUN · Friedman Memorial Airport72 mi away
- IDA · Idaho Falls Regional Airport109 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 BYI from FSI?
The flight distance from Burley (BYI) to Fort Sill (FSI) is 991 miles (1,594 km, 861 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BYI to FSI?
A nonstop flight takes about 2h 37m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from BYI to FSI?
Nonstop service on BYI–FSI depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 2h 37m nonstop estimate.
What is the cheapest way to fly from BYI to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BYI–FSI that never appear on search engines, with no booking fees.
Why are some BYI to FSI fares phone-only?
Consolidator contracts let us sell certain BYI–FSI tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.