The most convenient way to reach POSTECH from Seoul is either via Air (from Gimpo International Airport to Pohang Airport) or KTX fast train (from Seoul KTX Station to Pohang KTX Station).
From Pohang Airport (KPO) to POSTECH campus
POSTECH is located about 30 minutes away from Pohang Airport by car. Taxi service will charge about KRW 15,000.
From Pohang KTX Train Station to POSTECH campus
The Pohang KTX Station is about 20 minutes away from the campus by car and taxi service will cost about KRW 10,000.