Russia has lost more than 135 aircraft during the war in Ukraine. Among them are 30 Su-34 fighter-bombers, which play a key role in daily combat sorties along the front line. UNN writes about this, citing British intelligence.
According to British intelligence, Russia has lost over 30 Su-34 FULLBACK aircraft during the conflict in Ukraine. In total, Russia has lost over 135 aircraft during operations in Ukraine."
Addition
On June 27, 2025, Ukraine successfully attacked the Marinovka airfield in Russia's Volgograd using a UAV. As a result of the strike, at least two Russian Su-34 Fullback fighter-bombers were likely destroyed, and two more such aircraft were damaged or lost.
That same weekend, Ukraine also struck helicopter bases at the Kirovskoye airfield in Crimea and an artillery ammunition depot in Bryansk, inflicting significant blows on Russian military targets.