Take the Express Subway from Incheon International Airport Station(인천국제공항) to Seoul Station(서울역). -Approximately 1 hour. After, catch a taxi in front of the Seoul Tran Station, or take bus (No.501) to Soongsil University.
Take an Airport Limousines bus (No.6019) From bus stop (13A Area) of Incheon International Airport-Cost: 15,000wons (one-way)
It is much more convenient when moving as a group. The Jumbo Taxi can hold up to 5 passengers and the fare is a flat rate not based on per person. It will take approximately 90-95 minutes under normal traffic conditions. (Taxi stop at Incheon Airport / Fare: 90,000 KRW)
Once you clear customs, and exit the main terminal, go to taxi stop No.5C where there are
taxies that will go to Seoul.
(Fare : approximately 70,000 KRW)