San Lorenzo Market @ Piazza S. Lorenzo
The queen of Florentine markets is the San Lorenzo street market, filling Piazza San Lorenzo, Via del Canto de’ Nelli, Via dell’Ariento, and other side streets. It’s a wildly chaotic and colorful array of hundreds of stands hawking T-shirts, silk scarves, marbleized paper, Gucci knockof
fs, and lots and lots of leather. Many of the stalls are merely outlets for full-fledged stores hidden behind them. Haggling is tradition here, and though you’ll find plenty of leather lemons, there are also great deals on truly high-quality leather and other goods — you just have to commit to half a day of picking through it all and fending off sales pitches. March through October, most stalls are open daily about 8am to 8pm (it varies with how business is doing); November through February, the market is closed Mondays and Sundays, except for the 2 weeks or so around Christmas, when it remains open daily.
Straw Market (Porcellino)
Also known as Mercato del Porcellino or Mercato del Cinghiale because of the bronze wild boar statue at one end, cast by Pietro Tacca in the 17th century after an antique original 
now in the Uffizi. Pet the well-polished porcellino’s snout to ensure a return trip to Florence. Most of the straw stalls disappeared by the 1960s. These days, the loggia hawks mainly poor-quality leather purses, mediocre bijoux, souvenirs, and other tourist trinkets. Beware of pickpockets. In summer it’s open daily around 9am to 8pm, but in winter it closes at 5pm and all day Sunday and Monday.
Mercato Centrale
Somewhere in the center of this capitalist whirlwind hides the indoor Mercato Centrale food market (between Via dell’Ariento and Piazza del Mercato Centrale). Downstairs you’ll find meat, cheese, and dry goods. There’s one stall devoted to tripe aficionados, a second piled high wi
th baccalà (dried salt cod), and a good cheap eatery called Nerbone. The upstairs is devoted to fruits and veggies — a cornucopia of fat eggplants, long yellow peppers, stacks of artichokes, and pepperoncini bunched into brilliant red bursts. In all, you couldn’t ask for better picnic pickings. The market is open Monday through Saturday from 7am to 2pm and Saturday also 4 to 7:30pm.
Flea Market @ Piazza dei Ciompi
The famous FLEA MARKET of Florence is located in Piazza dei Ciompi and it’s opens (
every day from 9 to 19.30. An if you’re lucky go there on the last Sunday of every month, when the stalls extend into the surrounding streets. On it you can find furniture and objects from the past, prints, coins and jewellery. You can also find affordable treasures amidst the bric-a-brac and dusty books. It’s worth a trip if only to get insights on Italy’s past through the artifacts displayed in these cluttered stalls.
Sant’Ambrogio market @ Piazza Ghiberti
Located in Piazza Ghiberti and Piazza Sant’Ambrogio, the market is either indoor or outdoor. Just walk around it and discover fresh fruits and vegetables, clothes, flowers, shoes and houseware stands, then enter on 
it if you’re searchinf for fresh meat or fish, pasta, general groceries or good cheeses. You’re hungry? Then you’ve to take a seat in the inside restaurant (good and cheap). The merket it’s open every weekday (except for Sunday) from 7 to 14.
Cascine Market @ Parco delle Cascine
Situated in the very beautiful Parco delle Cascine (the bigger “park” of Florence) each Tuesday morning opens (from 7 to 14) the probably biggest and cheapest market in town! If you’re searching for fruits, vegetables, clothing, general groceries, houseware stands, antiquities, telephone cards, shoes and whatever you can need than come here
Flower Market @ Via Pellicceria
Every Thursday morning.