Iran has reopened its airspace in the central and western regions, allowing international flights to transit.

On June 28th, local time, the Ministry of Roads and Urban Development in Iran announced that, following the resolution of the Coordination Committee of the International Civil Aviation Organization and a safety assessment under current circumstances, the eastern airspace, previously reopened for domestic, international, and transit flights, has been reopened again, exclusively for international transit flights.
Additionally, Iran has extended the suspension period for domestic and international flights in its northern, southern, and western regions until 14:00 local time on June 29th. (News)