Need help booking?
Unpublished phone-only deals available
KOS to HIW: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Hiroshima (Hiroshimanishi Airport)
2,448 mi
3,939 km · 2,127 nm
5h 16m
estimated nonstop flight time
+2h
time difference · heading northeast
See live KOS→HIW fares Phone-only fares on this route — call free
Flight time details
2,448 miles nonstop takes roughly 5h 16m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time gain when reading arrival times on your ticket.
The two airports
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
- HIW — Hiroshimanishi Airport · Hiroshima, Japan
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 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
Near HIW
- IWK · Iwakuni Marine Corps Air Station18 mi away
- HIJ · Hiroshima Airport29 mi away
- MYJ · Matsuyama Airport41 mi away
- IWJ · Iwami Airport41 mi away
Frequently asked questions
How far is KOS from HIW?
The flight distance from Sihanoukville (KOS) to Hiroshima (HIW) is 2,448 miles (3,939 km, 2,127 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to HIW?
A nonstop flight takes about 5h 16m 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 Sihanoukville and Hiroshima?
Hiroshima is 2 hours ahead of Sihanoukville.
What is the cheapest way to fly from KOS to HIW?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–HIW that never appear on search engines, with no booking fees.