Southside Flea MarketNovember 7, 2016 in Florida by robl Southside Flea Market Mini Mall / Flea Market – Open year round. Open: Thurs through Sat 9am – 3pm. Mini-mall: Tues through Sat 9am – 5pm.. Location: 749 South Central Avenue, Umatilla, FL., 32784 Phone: 352-669-9900