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FSI to YSP: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → Marathon (Marathon Airport)
1,153 mi
1,856 km · 1,002 nm
2h 58m
estimated nonstop flight time
+1h
time difference · heading northeast
See live FSI→YSP fares Phone-only fares on this route — call free
Flight time details
1,153 miles nonstop takes roughly 2h 58m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- FSI — Henry Post Army Air Field (Fort Sill) · Fort Sill, United States
- YSP — Marathon Airport · Marathon, 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 YSP
- YMG · Manitouwadge Airport32 mi away
- YGQ · Geraldton Greenstone Regional Airport76 mi away
- YHN · Hornepayne Municipal Airport78 mi away
- YXZ · Wawa Airport90 mi away
Frequently asked questions
How far is FSI from YSP?
The flight distance from Fort Sill (FSI) to Marathon (YSP) is 1,153 miles (1,856 km, 1,002 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to YSP?
A nonstop flight takes about 2h 58m 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 Fort Sill and Marathon?
Marathon is 1 hour ahead of Fort Sill.
What is the cheapest way to fly from FSI to YSP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–YSP that never appear on search engines, with no booking fees.