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KOS to HEA: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Herat (Herat Airport)
3,076 mi
4,951 km · 2,673 nm
6h 30m
estimated nonstop flight time
-2.5h
time difference · heading northwest
See live KOS→HEA fares Phone-only fares on this route — call free
Flight time details
3,076 miles nonstop takes roughly 6h 30m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2.5-hour time set-back when reading arrival times on your ticket.
The two airports
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
- HEA — Herat Airport · Herat, Afghanistan
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 HEA
- OAH · Shindand Airport57 mi away
- FAH · Farah Airport127 mi away
Frequently asked questions
How far is KOS from HEA?
The flight distance from Sihanoukville (KOS) to Herat (HEA) is 3,076 miles (4,951 km, 2,673 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to HEA?
A nonstop flight takes about 6h 30m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from KOS to HEA?
Nonstop service on KOS–HEA depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 6h 30m nonstop estimate.
What is the time difference between Sihanoukville and Herat?
Herat is 2.5 hours behind Sihanoukville.
What is the cheapest way to fly from KOS to HEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–HEA that never appear on search engines, with no booking fees.
Why are some KOS to HEA fares phone-only?
Consolidator contracts let us sell certain KOS–HEA tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.