The biggest flea market in Paris.
Address: 140 Rue des Rosiers, Saint-Ouen. Nearest Metro Porte de Clignancourt.
It takes place over Saturday Sunday and Monday and is quite extensive, so check a map beforehand to make sure you find the goods bits. It is well known, so don’t expect too many major finds. Also, watch your wallet for pickpockets. Saying that, it is lots of fun to browse.
Also, when you get out of the Metro, there are lots of sock and watch sellers so you have to walk a little bit to get to the good stuff.
More détails on the website.
In addition, there is also the Puces at Porte de Vanves, which is better for antique bargains, but there isn’t much in clothing. You will need to get here early though, as it turns into new sock and watch sellers in the afternoon.
The Metro for this one is the Porte de Vanves, with the market running on Saturday and Sunday only.