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OSY to FSI: distance & flight time
Namsos (Namsos Høknesøra Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
4,624 mi
7,442 km · 4,018 nm
9h 32m
estimated nonstop flight time
-7h
time difference · heading northwest
See live OSY→FSI fares Phone-only fares on this route — call free
Flight time details
4,624 miles nonstop takes roughly 9h 32m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time set-back when reading arrival times on your ticket.
The two airports
- OSY — Namsos Høknesøra Airport · Namsos, Norway
- 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 OSY
- RVK · Rørvik Airport, Ryum28 mi away
- BNN · Brønnøysund Airport71 mi away
- TRD · Trondheim Airport Værnes73 mi away
- OLA · Ørland Airport80 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 OSY from FSI?
The flight distance from Namsos (OSY) to Fort Sill (FSI) is 4,624 miles (7,442 km, 4,018 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSY to FSI?
A nonstop flight takes about 9h 32m 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 Namsos and Fort Sill?
Fort Sill is 7 hours behind Namsos.
What is the cheapest way to fly from OSY to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSY–FSI that never appear on search engines, with no booking fees.