Ulsan Airport (RKPU)
Medium airport · Ulsan, Ulsan-gwangyeoksi (Ulsan Metropolitan City), South Korea
Airport data
| Name | Ulsan Airport |
|---|---|
| ICAO | RKPU |
| IATA | USN |
| Elevation | 45 ft (14 m) above mean sea level |
| Coordinates | N 35°35'37" E 129°21'7" 35.59350, 129.35201 |
| Location | Ulsan, Ulsan-gwangyeoksi (Ulsan Metropolitan City), South Korea |
| Scheduled service | Yes |
Runways
| Runway | Length | Width | Surface | Lighted |
|---|---|---|---|---|
| 18/36 | 6,561 ft (2000 m) | 148 ft | ASP | Yes |
Ulsan Airport at a glance
Ulsan Airport is a medium airport in Ulsan, Ulsan-gwangyeoksi (Ulsan Metropolitan City), South Korea, known to airline systems as USN. The field elevation of 45 ft (14 m) is the number every arriving pilot dials against QNH — circuit heights and initial approach altitudes at RKPU are all figured from it. The airport handles scheduled commercial service, so expect controlled procedures, published approaches and commercial traffic in the pattern.
The single runway, 18/36, offers 6,561 ft (2000 m) of asp surface, with runway lighting for night operations. Runway numbers give magnetic orientation: runway 18 points roughly 180° magnetic.
For the weather side of planning, the live METAR and TAF page for RKPU shows the current observation decoded line by line — wind on an instrument dial, visibility, cloud layers and the resulting flight rules — refreshed continuously from official sources.
Nearest airports to Ulsan Airport
Distances are great-circle, measured from the field reference point — planning distances along airways or roads will run longer.
| Airport | Code | Distance |
|---|---|---|
| Pohang Airport (G-815/K-3) | RKTH | 44 km (24 NM) |
| Gimhae International Airport | RKPK | 59 km (32 NM) |
| Daegu International Airport | RKTN | 71 km (38 NM) |
| Sacheon Airport / Sacheon Air Base | RKPS | 129 km (70 NM) |
| Tsushima Airport | RJDT | 146 km (79 NM) |
Flight-planning notes for Ulsan Airport
Density altitude is the quiet performance-killer at any field: on a hot day the 45 ft field elevation of Ulsan Airport can translate into a substantially higher density altitude, stretching take-off rolls and flattening climb rates — run the numbers rather than trusting the feel of a standard day. Expect published instrument procedures, controlled airspace and clearance requirements; slots and handling may apply to general aviation traffic.
This entry is one of 24 airports and airfields we list for South Korea — the country index on the airports hub links the rest. Coordinates above are given in both DMS and decimal degrees so they can go straight into a GPS, a flight planner or a chart plot without conversion.
Where this data comes from
The reference layer behind this page builds on the OurAirports dataset — a public-domain, community-maintained register of the world's airports that many flight planners and apps rely on — with equity records preserved from documented historical listings where the dataset is silent. Figures are carried as published: elevations as surveyed, coordinates as filed, runway dimensions as recorded. Nothing is estimated to fill a gap, and the whole layer regenerates from source on every site build, so corrections upstream arrive here automatically.
Frequently asked questions about Ulsan Airport
What is the ICAO code of Ulsan Airport?
The ICAO identifier of Ulsan Airport is RKPU, and its IATA code is USN. The ICAO code is the one used in flight plans, METAR reports and aeronautical charts.
How high is Ulsan Airport above sea level?
Ulsan Airport sits at an elevation of 45 feet (14 metres) above mean sea level. Field elevation is the reference for pattern altitudes and for setting the altimeter on the ground.
Where exactly is Ulsan Airport located?
The airport lies at 35.5935, 129.3520 — in Ulsan, Ulsan-gwangyeoksi (Ulsan Metropolitan City), South Korea, in the northern hemisphere. The closest listed field is Pohang Airport (G-815/K-3), about 44 km away.
Does RKPU publish METAR weather reports?
Where the station reports, the current METAR and TAF for RKPU appear on its live weather page on this site, refreshed continuously from the US NWS Aviation Weather Center feed.
How long is the runway at Ulsan Airport?
Ulsan Airport has one runway. The longest, 18/36, measures 6,561 ft (2000 m) with a ASP surface.