Western co-op to Gimpo airport

Hello,

I would like to know what is the travel time between Western co-op to Gimpo by taxi and how much?

Thanks.

Western co-op to Gimpo airport

I don%26#39;t know about the taxi fare but it would take about 30~40 minutes.

There are also subways and buses to Dongdaemun area, though I don%26#39;t know where exactly the Western co-op is.