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FSI to SIN: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → Singapore (Singapore Changi Airport)
9,558 mi
15,382 km · 8,305 nm
19h 12m
estimated nonstop flight time
+13h
time difference · heading northwest
See live FSI→SIN fares Phone-only fares on this route — call free
Flight time details
9,558 miles nonstop takes roughly 19h 12m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-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
- SIN — Singapore Changi Airport · Singapore, Singapore
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 SIN
- QPG · Paya Lebar Air Base6 mi away
- XSP · Seletar Airport10 mi away
- BTH · Hang Nadim International Airport18 mi away
- TGA · Tengah Air Base20 mi away
Frequently asked questions
How far is FSI from SIN?
The flight distance from Fort Sill (FSI) to Singapore (SIN) is 9,558 miles (15,382 km, 8,305 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to SIN?
A nonstop flight takes about 19h 12m 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 Singapore?
Singapore is 13 hours ahead of Fort Sill.
What is the cheapest way to fly from FSI to SIN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–SIN that never appear on search engines, with no booking fees.