Three markets worth knowing: the Melrose Trading Post (Sundays, Fairfax and Melrose, hipster-leaning vintage), the Rose Bowl Flea Market (second Sunday of the month, 2,200 vendors, the best for serious hunting), and the Pasadena City College Flea Market (first Sunday, free, 480 vendors). The Rose Bowl market is the one that draws dealers from across the country and where you can find genuinely unusual things if you arrive early.
Los Angeles Flea Markets
Three Sunday markets from vintage to serious antiques