Araghchi traveled on “Minab 168,” a flight named in memory of schoolchildren killed in the US strike on the Minab school.
The visit comes as part of his regional diplomatic tour following talks in Pakistan and Oman.
Earlier, Iranian Ambassador to Moscow Kazem Jalali announced that Araghchi would visit St. Petersburg. The diplomat said that the Iranian foreign minister's visit would be aimed at "advancing interests amid external threats."