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FSI to RML: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → Colombo (Colombo Ratmalana Airport)
9,569 mi
15,400 km · 8,315 nm
19h 14m
estimated nonstop flight time
+10.5h
time difference · heading north
See live FSI→RML fares Phone-only fares on this route — call free
Flight time details
9,569 miles nonstop takes roughly 19h 14m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 10.5-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
- RML — Colombo Ratmalana Airport · Colombo, Sri Lanka
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 RML
- CMB · Bandaranaike International Colombo Airport25 mi away
- KCT · Koggala Airport65 mi away
- HRI · Mattala Rajapaksa International Airport93 mi away
- GIU · Sigiriya Air Force Base97 mi away
Frequently asked questions
How far is FSI from RML?
The flight distance from Fort Sill (FSI) to Colombo (RML) is 9,569 miles (15,400 km, 8,315 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to RML?
A nonstop flight takes about 19h 14m 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 Colombo?
Colombo is 10.5 hours ahead of Fort Sill.
What is the cheapest way to fly from FSI to RML?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–RML that never appear on search engines, with no booking fees.