I see. In such a case, Seoul (Gangnam) Express Bus Terminal could be a better option than East Seoul Bus Terminal, depending on the location of your stay. The Seoul Express Bus Terminal is located at the southern part of the city. I will look for the bus schedule from this terminal to Gangneung and be back.
For the time being,
http://www.kobus.co.kr/web/eng_new/schedule.jsp (in English).
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ETD: OK. The details.
Survival guide (Version 2) when you cannot get the Gangneung bus at the airport:
They have frequent bus services at Seoul Express Bus Terminal.
1) Incheon Airport - Gangnam Bus Terminal
Gangnam Bus Terminal actually means several adjacent structures at Gangnam:
- Seoul Express Bus Terminal (Gyeongbu Line, Yeongdong Line) : Bus to Gangneung departs from here.
http://english.visitkorea.or.kr/enu/ATR/SI_EN_3_1_1_1.jsp?cid=1116940- Central City Bus Terminal (Honam Line) + Shinsegae Department Store
- JW Marriott Hotel
- Underground shopping mall
Take Bus 6020 at the Airport, Platform No. 4B or 11A
http://www.seoulbus.co.kr/eng/index/airportbus_01_1.php?val=11
Duration: 50 -60 minutes
Frequency: 15 to 25 minutes. First bus at 05:25. Last bus at 23:10 (As of November 6)
Cost: 15,000 Korean Won
Gangnam Terminal is the third stop from the Airport.
http://www.seoulbus.co.kr/BlueAD/admin/station/upload/0.19252900 1393463659.jpg (in English)
http://www.seoulbus.co.kr/BlueAD/admin/station/upload/0.49025200 1313747333.jpg (in Korean)
Large circles indicate subway stations. Bus terminals are small building blocks.
When you compare two images, you would find they forgot drawing the bus stop (i.e., get off point) in front of Gangnam Terminal in the English version.
When you get off from the bus, look for a building looking like this,
https://ko.wikipedia.org/wiki/파일:서울고속버스터미날_02.jpg
2) Seoul Express Bus Terminal (Yeongdong Line) - Gangneung Express Bus Terminal
Duration: Two hours and 40 minutes
Frequency: 20 to 30 minutes. First bus at 06:00. Last bus at 23:30 (As of November 6)
http://www.kobus.co.kr/web/eng_new/schedule.jsp
Cost: 14,600 - 23,600 Korean Won
Cash only. They do not accept foreign credit cards.
Platform No. 22 http://www.exterminal.co.kr/take.asp
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Gangneung Bus Terminal is a combination of two buildings. Seen from the outside,
- Left Wing = Gangneung Express Bus Terminal: Buses to Seoul Express Bus Terminal and East (Dong) Seoul Bus Terminal Express Line
- Right Wing = Gangneung Inter-city Bus Terminal: Buses to East (Dong) Seoul Bus Terminal Inter-city Line and Incheon Airport/Gimpo Airport
Thank you so so much!! You are a lifesaver!