What is the best aerobic shoe for flat feet?

Varies: It varies from person to person somewhat and is a little trial and error. That being said, most people with flat feet tend to probate their feet and so if you go to a sporting good store and ask to try on several "anti pronation" shoes, you will probably find one that will be a very good fit for you. Thank you.

Stability shoe: Generally, i advise patients with flat feet to wear shoes with a rigid mid-sole (doesn't bend in the middle). You can always add an arch support or custom foot orthotic if necessary. Make sure the shoe is correctly sized in length and width.