Stores in Istanbul are open between 7:00 and 22:00. Supermarkets open earlier and close later. Shopping malls and fashion retailers / boutiques often don't open until 9:00 or 10:00. It is best to take a look at the exact opening times of the shops on the Internet.

The main shopping street in Istanbul is the famous Istiklal Street. You will find there stores of international chains, but also local textile giants like FLO, LC Waikiki and many more. In addition to shopping, Istiklal Street offers a vibrant nightlife, street food, many bars and restaurants, as well as architecture and sightseeing. Other popular shopping streets in Istanbul are Bağdat Street, Nispetiye Street and Abdi İpekçi Street.

Stores in Istanbul are generally open from Monday to Saturday, sometimes also on Sundays.

Due to the boom of shopping malls in recent years, there are now more than 200 shopping malls in Istanbul. It is safe to assume that many more will be built in the next few years.

With 495,000 square meters of construction area, 176,245 square meters of shopping space and a total of 286 brands, Forum Istanbul is the largest shopping center in Istanbul. 

Yes, in Istanbul and in Turkey in general, stores are open on Sundays. You can visit the malls and stores as usual. Only exception: the Grand Bazaar is closed on Sundays.