1. Sign Up for Emails and Get a Discount
Sign up for their email newsletter and you will receive a code for 20% off of your entire purchase.
2. Shop on the Weekend
The weekend is usually when Aeropostale offers a greater discount or special discount codes. Aeropostale tends to do site wide percentages off and will sometimes offer cash off coupons. It is likely to see clothing 40-70% off and coupon codes can be stacked on these already low prices.