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XSI to FSI: distance & flight time
South Indian Lake (South Indian Lake Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
1,530 mi
2,462 km · 1,330 nm
3h 28m
estimated nonstop flight time
Same time
time difference · heading south
See live XSI→FSI fares Phone-only fares on this route — call free
Flight time details
1,530 miles nonstop takes roughly 3h 28m gate to gate, flying south. 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
- XSI — South Indian Lake Airport · South Indian Lake, Canada
- 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 XSI
- YLR · Leaf Rapids Airport45 mi away
- YTH · Thompson Airport79 mi away
- YYL · Lynn Lake Airport82 mi away
- KES · Kelsey Airport105 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 XSI from FSI?
The flight distance from South Indian Lake (XSI) to Fort Sill (FSI) is 1,530 miles (2,462 km, 1,330 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from XSI to FSI?
A nonstop flight takes about 3h 28m 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 XSI to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on XSI–FSI that never appear on search engines, with no booking fees.