“Real and immediate terror threats remain throughout the country,” the bureau said in a statement.”
It stressed that the danger applied not just to Istanbul, but to “all tourism sites in Turkey”.
The warning comes after last month’s terrorist bombing in central Istanbul in which three Israeli tourists were killed and several others wounded.
The were reports that Islamic State was planning a attack on an Istanbul synagogue and Jewish school.
Turkey is a popular holiday destination for Israelis, with tens of thousands of Israelis visiting every year. A surge in tourists from Israel is expected over the Passover period.
