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FSI to YST: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → St. Theresa Point (St. Theresa Point Airport)
1,337 mi
2,152 km · 1,162 nm
3h 22m
estimated nonstop flight time
Same time
time difference · heading north
See live FSI→YST fares Phone-only fares on this route — call free
Flight time details
1,337 miles nonstop takes roughly 3h 22m 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
- FSI — Henry Post Army Air Field (Fort Sill) · Fort Sill, United States
- YST — St. Theresa Point Airport · St. Theresa Point, Canada
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 YST
- YIV · Island Lake Airport8 mi away
- YGO · Gods Lake Narrows Airport51 mi away
- YRS · Red Sucker Lake Airport57 mi away
- ZGI · Gods River Airport75 mi away
Frequently asked questions
How far is FSI from YST?
The flight distance from Fort Sill (FSI) to St. Theresa Point (YST) is 1,337 miles (2,152 km, 1,162 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to YST?
A nonstop flight takes about 3h 22m 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 FSI to YST?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–YST that never appear on search engines, with no booking fees.