Currency exchange stores at Myeongdong has the BEST rate. Whereas banks at the airport have the WORST rate!
Currency exchange options listed from the BEST to the WORST:
Currency exchange stores in Myeongdong 明洞 명동
There are quite a few near Myeongdong station.
Currency exchange stores in Dongdaemun 東大門 동대문
If you stay at Acacia or Euljiro CO-OP Residence and taking subway at 東大門歷史文化公園驛 동대문역사문화공원역, you would bypass this currency exchange store.
Banks in city center
Currency exchange only available during working hours Monday through Friday (except public holiday).
Banks at the airport
There are banks located inside the restricted area and outside at the waiting area for the public. The rates are the same.
yeo haeng ji 