Since the beginning of the Russian invasion of Ukraine on February 24, 2022, Iranian military-affiliated planes were spotted flying to and from Russia.
On February, there were ZERO flights to Russia from Iran (By IRGC aircraft),
On Late March, there was 1 flight (EP-PUS – IRGC’s aircraft – Date: March 24),
And on April the number got increased, big time! 8 flights were spotted by IRGC planes to Moscow (As of now: April 24, 2022)

Spotted and active IRGC aircraft that were used for Moscow trips were:
Registration: EP-FAA: Qeshm Fars Air – Boeing 747-281B – Hex: 731821
Registration: EP-PUS: Pouya Air – Ilyushin IL-76TD – Hex: 7342B3
Aircraft | Date |
EP-PUS | 24-Mar |
EP-PUS | 11-Apr |
EP-PUS | 14-Apr |
EP-FAA | 15-Apr |
EP-PUS | 16-Apr |
EP-FAA | 19-Apr |
EP-PUS | 20-Apr |
EP-PUS | 22-Apr |
EP-FAA | 22-Apr |
It’s noteworthy to mention that the Iranian regime has battle-tested UAVs like Shahed-136 for Kamikaze attacks.