Need help booking?
Unpublished phone-only deals available
HLH to USM: distance & flight time
Ulanhot (Ulanhot Airport) → Ko Samui (Samui Airport)
2,844 mi
4,577 km · 2,471 nm
6h 3m
estimated nonstop flight time
-1h
time difference · heading southwest
See live HLH→USM fares Phone-only fares on this route — call free
Flight time details
2,844 miles nonstop takes roughly 6h 3m 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
- HLH — Ulanhot Airport · Ulanhot, China
- USM — Samui Airport · Ko Samui, Thailand
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 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
Near USM
- URT · Surat Thani Airport69 mi away
- NST · Nakhon Si Thammarat Airport70 mi away
- CJM · Chumphon Airport93 mi away
- UNN · Ranong Airport102 mi away
Frequently asked questions
How far is HLH from USM?
The flight distance from Ulanhot (HLH) to Ko Samui (USM) is 2,844 miles (4,577 km, 2,471 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HLH to USM?
A nonstop flight takes about 6h 3m 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 Ulanhot and Ko Samui?
Ko Samui is 1 hour behind Ulanhot.
What is the cheapest way to fly from HLH to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HLH–USM that never appear on search engines, with no booking fees.