flydubai in summer 2017 is definitely adjusting service to Iran, along with minor frequency changes. Planned procedure as follow.
Dubai – Ahvaz (Ahwaz) Last flight scheduled upon 12APR17, currently served twice every week
Dubai – Isfahan 19MAY17 – 28JUN17 Decrease from 3 to 2 every week
Dubai – Mashad 26MAR17 – 25JUN17 Decrease from 5 to 4 every week (Note the airline has already decreased service from 7 to six weekly from 04JAN17, moving in order to 4-5 weekly level in S17)