What are you shopping for ?
the big shopping center is MBK , with other shopping in the area, its on the BTS (monorail) at National Stadium
Outdoor shopping is the weekend market saturday-Sunday, the end if the BTS at Mochit, go early it gets HOT
Chinatown is another shopping place at the end of the MRT (subway)
No place is close to the New airport, but if you are departing 6-7am flight th
ere is no traffic and you can get there in 30-45 minutes
Have Fun
Rally