Hours after the announcement, flight tracking platforms showed that Iranian airspace remained largely empty of international traffic. Major carriers across Europe and beyond are continuing to avoid the corridors, rerouting flights over neighbouring countries instead. The detours are significant, with aircraft taking longer paths through alternative airspace to reach their destinations.
This caution is not simply a matter of preference. Airlines rely on independent safety assessments from international civil aviation regulators, not just on national announcements. Until those bodies formally revise their guidance and validate conditions over Iran as safe and stable, most carriers are unlikely to resume operations through the region. Operational factors also play a role — reintroducing a flight route involves considerable planning, from recalculating fuel loads to adjusting crew schedules and securing approvals from multiple authorities. None of that happens overnight.
The broader context matters too. International aviation has had a difficult few years navigating restricted airspace across various parts of the world, and carriers have become accustomed to making cautious, evidence-based decisions before returning to previously disrupted routes.