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Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HEK–KOS that never appear on search engines, with no booking fees.