From the Incheon international airport, exit from gate 11.
There is a bus station 11A, take a bus, 6009. It would take around 1hr 30mins.
Get off at Yangjae Station.
Walk straight down toward Yangjae Station and turn around the corner.
Go straight down until you see gate 9 across.
El tower is right in front of the gate 9
It will take 15,000(won).