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FSI to BKK: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → Bangkok (Suvarnabhumi Airport)
8,869 mi
14,273 km · 7,707 nm
17h 51m
estimated nonstop flight time
+12h
time difference · heading northwest
See live FSI→BKK fares Phone-only fares on this route — call free
Flight time details
8,869 miles nonstop takes roughly 17h 51m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12-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
- BKK — Suvarnabhumi Airport · Bangkok, Thailand
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 BKK
- DMK · Don Mueang International Airport19 mi away
- KDT · Kamphaeng Saen Airport63 mi away
- UTP · U-Tapao International Airport71 mi away
- HHQ · Hua Hin Airport90 mi away
Frequently asked questions
How far is FSI from BKK?
The flight distance from Fort Sill (FSI) to Bangkok (BKK) is 8,869 miles (14,273 km, 7,707 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to BKK?
A nonstop flight takes about 17h 51m 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 Bangkok?
Bangkok is 12 hours ahead of Fort Sill.
What is the cheapest way to fly from FSI to BKK?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–BKK that never appear on search engines, with no booking fees.