Ulsan Airport Code

Ulsan has one major airport Ulsan Airport, whose IATA airport code is USN.

Ulsan Airport

IATA code	USN
ICAO code	RKPU

Airport codes for other cities in South Korea

City
Busan
Cheongju
Daegu
Gwangju
Jeju
Kunsan
Piseo-ri (Muan)
Pohang
Sacheon
Seoul
Ulsan
Wonju
Yangyang
Yeosu