Method #1 of getting from Incheon International Airport to Yonsei University Engineering Building No. 1(4). #note that Engineering Building 1 is connected to 4 [Airport limousine bus (most recommended)] Pro: Short travel time, quiet, spacious, comfortable seats. Con: A bit more expensive than the subway. Fare: KRW 10,000 (about $9 USD). Bus interval: 20-30 minutes. Travel time: About 55 minutes to Yonsei University. How to: 1. Buy a bus ticket at one of the Bus Ticketing Offices located in Incheon International Airport: 2. Go to bus stop 5B (@ Terminal 1) or 29~35 (@ Terminal 2) of Incheon International Airport depending on your arrival terminal. 3. Get on a bus with number 6011. 4. Get off Yonsei University. 5. Here is the public transport website: https://www.airport.kr/ap_cnt/en/tpt/pblctpt/pblctpt.do Bus route Depart: Incheon International Airport Terminal T1 Stop #1: World Cup Stadium Entrance Stop #2: Yeonhui 104 (Former) Seongsan Hall Stop #3: Yonsei University (Get off here.) The bus is equipped with audio announcement service in English & Japanese. You have to press a bell to signal to the bus driver that you will be getting off at the next stop. For the google map link of the route, click here. Method #2 of getting from Incheon International Airport to Yonsei University Engineering Building No. 1(4). #note that Engineering Building 1 is connected to 4 [Airport Express Train] Pro: Cheap, well air-conditioned, free from traffic jam and pollution. Con: A bit long travel time (1 hour). The seats in the subway are not exactly comfortable for long trip. You might have to travel standing if there are too many passengers in the subway (during rush hours). Fare: KRW 4,750 (about $4 USD). Interval: 6-7 minutes. Travel time: about 1 hour. How to: 1. Using Automatic Ticket Machine or Travel Center, buy a single journey ticket. 2. Get on the all stop train to Seoul Station (not Express Train). 3. Get off Sinchon station line #2 (240). You should transfer from Hongik Univ. (Arex line) to Sinchon (Line #2). Click here to see subway map. Train route Depart: Incheon International Airport (A10) Stop #1: Incheon Int’l Airport Cargo Terminal (A09) Stop #2: Unseo (A08) Stop #3: Cheongna Int’l City Station (A071) Stop #4: Geomam (IA) Stop #5: Gyeyang (AI) Stop #6: Gimpo Int’l Airport (A59) Stop #7: Digital Media City (A6GJ) Stop #8: Hongik Univ. (2AGJ) Transfer to line #2 Stop #9: Sinchon (240) Walk 30 min. from Sinchon station (exit #2, #3) to Yonsei University Engineering Building No. 1(4) Method #3 of getting from Gimpo Int’l Airport to Yonsei University Engineering Building No. 1(4). #note that Engineering Building 1 is connected to 4 [Airport Express Train] There is no Airport limousine bus. Pro: Cheap, well air-conditioned, free from traffic jam and pollution. Con: The seats in the subway are not exactly comfortable for long trip. You might have to travel standing if there are too many passengers in the subway (during rush hours). Fare: KRW 1,550 (about $1 USD). Interval: 6-7 minutes. Travel time: about 40 minutes. How to: 1. Using Automatic Ticket Machine, buy a single journey ticket. 2. Get on a train to Seoul Station. 3. Get off Sinchon station line #2 (240). You should transfer from Hongik Univ. (Arex line) to Sinchon (Line #2). Click here to see subway map. Train route Depart: Gimpo International Airport (A59) Stop #1: Digital Media City (A6GJ) Stop #2: Hongik Univ. (2AGJ) Transfer to line #2 Stop #3: Sinchon (240) Walk 30 min. from Sinchon station (exit #2, #3) to Yonsei University Engineering Building No. 1(4) .