Distance From Henry Post Army Air Field (Fort Sill) to Naha Airport / JASDF Naha Air Base, FSI - OKA Distance

The distance from Henry Post Army Air Field (Fort Sill) (FSI) to Naha Airport / JASDF Naha Air Base (OKA) is 7265 miles or 11692 kilometers or 6309 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from Fort Sill ( United States ) to Naha ( Japan )?

A one-way nonstop (direct) flight between Fort Sill and Naha takes around 16 hours 42 minutes.

Estimated flight time from Henry Post Army Air Field (Fort Sill), Fort Sill, United States to Naha Airport / JASDF Naha Air Base, Naha, Japan is 16 hours 42 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • FSI - OKA

Kilometers		11692 km
Statute Miles		7265 miles
Nautical Miles		6309 nm
Avg. Time of Flight		16 hours 42 minutes

Henry Post Army Air Field (Fort Sill) to Naha Airport / JASDF Naha Air Base Flight Route Map - FSI to OKA Flight Path

Location of Henry Post Army Air Field (Fort Sill) & Naha Airport / JASDF Naha Air Base is given below.
Click the map to view Fort Sill to Naha nonstop flight path and travel direction.

Click to see flight route on Google Map between Fort Sill, United States and Naha, Japan. .

Nonstop flight route between Fort Sill, United States and Naha, Japan.

Time Difference Between the Airports • FSI - OKA

Time difference between Fort Sill (United States) and Naha (Japan) is 15 Hours.
Naha time is 15 Hours ahead of Fort Sill.

Location	Local Time
Fort Sill (United States)	2026-03-19, 09:59:25 MDT
Naha (Japan)	2026-03-20, 00:59:25 JST

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Henry Post Army Air Field (Fort Sill) (FSI / KFSI) Fort Sill, United States

Destination

Naha Airport / JASDF Naha Air Base (OKA / ROAH) Naha, Japan