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OIR to KOS: distance & flight time
Okushiri (Okushiri Airport) → Sihanoukville (Sihanoukville International Airport)
3,065 mi
4,933 km · 2,664 nm
6h 29m
estimated nonstop flight time
-2h
time difference · heading southwest
See live OIR→KOS fares Phone-only fares on this route — call free
Flight time details
3,065 miles nonstop takes roughly 6h 29m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time set-back when reading arrival times on your ticket.
The two airports
- OIR — Okushiri Airport · Okushiri, Japan
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
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 OIR
- HKD · Hakodate Airport74 mi away
- AOJ · Aomori Airport113 mi away
- OKD · Okadama Airport123 mi away
- CTS · New Chitose Airport125 mi away
Near KOS
- PQC · Phu Quoc International Airport37 mi away
- PNH · Phnom Penh International Airport106 mi away
- VKG · Rach Gia Airport110 mi away
- KZC · Kampong Chhnang Airport132 mi away
Frequently asked questions
How far is OIR from KOS?
The flight distance from Okushiri (OIR) to Sihanoukville (KOS) is 3,065 miles (4,933 km, 2,664 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OIR to KOS?
A nonstop flight takes about 6h 29m 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 Okushiri and Sihanoukville?
Sihanoukville is 2 hours behind Okushiri.
What is the cheapest way to fly from OIR to KOS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OIR–KOS that never appear on search engines, with no booking fees.