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KOS to HLH: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Ulanhot (Ulanhot Airport)
2,688 mi
4,325 km · 2,335 nm
5h 44m
estimated nonstop flight time
+1h
time difference · heading north
See live KOS→HLH fares Phone-only fares on this route — call free
Flight time details
2,688 miles nonstop takes roughly 5h 44m 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
- HLH — Ulanhot Airport · Ulanhot, 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 HLH
- DBC · Baicheng Chang'an Airport68 mi away
- NDG · Qiqihar Sanjiazi Airport116 mi away
- NZL · Chengjisihan Airport121 mi away
- YIE · Arxan Yi'ershi Airport126 mi away
Frequently asked questions
How far is KOS from HLH?
The flight distance from Sihanoukville (KOS) to Ulanhot (HLH) is 2,688 miles (4,325 km, 2,335 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to HLH?
A nonstop flight takes about 5h 44m 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 Ulanhot?
Ulanhot is 1 hour ahead of Sihanoukville.
What is the cheapest way to fly from KOS to HLH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–HLH that never appear on search engines, with no booking fees.