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HLH to ICN: distance & flight time
Ulanhot (Ulanhot Airport) → Seoul (Incheon International Airport)
645 mi
1,037 km · 560 nm
1h 52m
estimated nonstop flight time
+1h
time difference · heading south
See live HLH→ICN fares Phone-only fares on this route — call free
Flight time details
645 miles nonstop takes roughly 1h 52m gate to gate, flying south. 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
- HLH — Ulanhot Airport · Ulanhot, China
- ICN — Incheon International Airport · Seoul, South Korea
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 ICN
- GMP · Gimpo International Airport20 mi away
- SWU · Suwon Airport34 mi away
- SSN · Seoul Air Base (K-16)36 mi away
- OSN · Osan Air Base41 mi away
Frequently asked questions
How far is HLH from ICN?
The flight distance from Ulanhot (HLH) to Seoul (ICN) is 645 miles (1,037 km, 560 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HLH to ICN?
A nonstop flight takes about 1h 52m 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 Seoul?
Seoul is 1 hour ahead of Ulanhot.
What is the cheapest way to fly from HLH to ICN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HLH–ICN that never appear on search engines, with no booking fees.