Need help booking?
Unpublished phone-only deals available
SFO to FSI: distance & flight time
San Francisco (San Francisco International Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
1,350 mi
2,172 km · 1,173 nm
3h 24m
estimated nonstop flight time
+2h
time difference · heading east
See live SFO→FSI fares Phone-only fares on this route — call free
Flight time details
1,350 miles nonstop takes roughly 3h 24m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time gain when reading arrival times on your ticket.
The two airports
- SFO — San Francisco International Airport · San Francisco, 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 SFO
- SQL · San Carlos Airport10 mi away
- HAF · Half Moon Bay Airport10 mi away
- OAK · Metropolitan Oakland International Airport11 mi away
- NGZ · Alameda Naval Air Station12 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 SFO from FSI?
The flight distance from San Francisco (SFO) to Fort Sill (FSI) is 1,350 miles (2,172 km, 1,173 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SFO to FSI?
A nonstop flight takes about 3h 24m 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 San Francisco and Fort Sill?
Fort Sill is 2 hours ahead of San Francisco.
What is the cheapest way to fly from SFO to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SFO–FSI that never appear on search engines, with no booking fees.