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KOS to HEK: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Heihe (Heihe Airport)
3,050 mi
4,908 km · 2,650 nm
6h 27m
estimated nonstop flight time
+1h
time difference · heading north
See live KOS→HEK fares Phone-only fares on this route — call free
Flight time details
3,050 miles nonstop takes roughly 6h 27m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
- HEK — Heihe Airport · Heihe, China
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 HEK
- BQS · Ignatyevo Airport18 mi away
- DTU · Wudalianchi Dedu Airport131 mi away
- JGD · Jiagedaqi Airport142 mi away
Frequently asked questions
How far is KOS from HEK?
The flight distance from Sihanoukville (KOS) to Heihe (HEK) is 3,050 miles (4,908 km, 2,650 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to HEK?
A nonstop flight takes about 6h 27m 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 Heihe?
Heihe is 1 hour ahead of Sihanoukville.
What is the cheapest way to fly from KOS to HEK?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–HEK that never appear on search engines, with no booking fees.