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FSI to SIG: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → San Juan (Fernando Luis Ribas Dominicci Airport)
2,274 mi
3,659 km · 1,976 nm
4h 55m
estimated nonstop flight time
+1h
time difference · heading east
See live FSI→SIG fares Phone-only fares on this route — call free
Flight time details
2,274 miles nonstop takes roughly 4h 55m gate to gate, flying east. 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
- SIG — Fernando Luis Ribas Dominicci Airport · San Juan, Puerto Rico
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 SIG
- SJU · Luis Munoz Marin International Airport6 mi away
- FAJ · Diego Jimenez Torres Airport30 mi away
- NRR · José Aponte de la Torre Airport33 mi away
- ARE · Antonio Nery Juarbe Pol Airport38 mi away
Frequently asked questions
How far is FSI from SIG?
The flight distance from Fort Sill (FSI) to San Juan (SIG) is 2,274 miles (3,659 km, 1,976 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to SIG?
A nonstop flight takes about 4h 55m 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 San Juan?
San Juan is 1 hour ahead of Fort Sill.
What is the cheapest way to fly from FSI to SIG?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–SIG that never appear on search engines, with no booking fees.