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ICN to HLH: distance & flight time
Seoul (Incheon International Airport) → Ulanhot (Ulanhot Airport)
645 mi
1,037 km · 560 nm
1h 52m
estimated nonstop flight time
-1h
time difference · heading north
See live ICN→HLH fares Phone-only fares on this route — call free
Flight time details
645 miles nonstop takes roughly 1h 52m gate to gate, flying north. 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
- ICN — Incheon International Airport · Seoul, South Korea
- 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 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
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 ICN from HLH?
The flight distance from Seoul (ICN) to Ulanhot (HLH) is 645 miles (1,037 km, 560 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ICN to HLH?
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.
Are there nonstop flights from ICN to HLH?
Nonstop service on ICN–HLH depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 1h 52m nonstop estimate.
What is the time difference between Seoul and Ulanhot?
Ulanhot is 1 hour behind Seoul.
What is the cheapest way to fly from ICN to HLH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ICN–HLH that never appear on search engines, with no booking fees.
Why are some ICN to HLH fares phone-only?
Consolidator contracts let us sell certain ICN–HLH tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.