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Ulsan Airport (USN) currently has nonstop service to 2 destinations on 3 airlines in our latest departure data. The busiest route is to Jeju City (CJU), served by 2 carriers, and the largest operator here is Korean Air with nonstops to 2 destinations.
Route data as of August 29, 2026, based on a 7-day departures sample.
You can fly nonstop from USN to 2 destinations. Current schedules show about 6 flights per day across those routes. The busiest options start with Jeju City (CJU), Seoul (GMP).
0 international routes in this schedule set
South Korea 2
3/day on 2 airlines
Airbus A220 · Airbus A320 family · Boeing 737
These routes have enough tracked flights or schedule depth for a full guide with duration, distance, airlines, aircraft, and frequency.
Ranked by destinations served, then daily frequency.
Ranked by airlines operating the route. Routes with enough tracked data or schedule depth link to full route guides.
Ulsan Airport (USN / RKPU) is located in Ulsan, South Korea.
The IATA code is USN. The ICAO code is RKPU.
The busiest scheduled route from USN in our current departure data is USN to CJU (Jeju City), with 3/day across 2 airlines.
Korean Air is the largest operator in our USN schedule data, serving 2 destinations with 3/day.
USN has 0 international routes and 2 domestic routes in the current schedule set.
3 airlines operate at USN. Top carriers include Korean Air, Air Busan, Jin Air.
USN has direct flights to 2 destinations including Jeju City, Seoul.
View live arrivals and departures at USN on FlightRadar24.
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