Pyeongtaek Bus Station, Intercity Bus Terminal, and Airport Bus
Buses from the Pyeongtaek Bus Station go all over South Korea. For the express bus to Seoul you need the Pyeongtaek Express Bus Terminal which is located between the Intercity Bus Station and AK Plaza.
The Pyeongtaek Intercity Bus Terminal/Station is a great option for getting to Incheon (13,300₩) or Gimpo (8,600₩) Airports from Camp Humphreys. No reservation needed. From here you can take the Airport Limousine Bus to either airport. When I took the bus in March to the Incheon Airport it took about 2hrs 15mins.
There are several ways to get to the Pyeongtaek Intercity Bus Station:
20 Bus – take the 20 Bus from the Camp Humphreys walk out gate to the stop right after AK Plaza
GPS – (using the Avol GPS) search for “Pyeongtaek Bus Terminal” or search by phone number – 031 1688 0538
Map pins: iPhone, Google, Waze, Naver
For the express bus to Seoul you need the Pyeongtaek Express Bus Terminal which is located between the Intercity Bus Station and AK Plaza.