As Icarus Jet explains, many private and commercial flights regularly overfly Iran without incident. U.S. air carriers are prohibited from using the Tehran Flight Information Region (FIR), but much of this restriction stems from political relations—not necessarily aviation safety concerns.Iranian Air Traffic Control handles international flights professionally and safely, with English‑speaking controllers and a solid track record for emergency response and coordination. In practice, overflight can be smooth—but many operators and operators’ associations now recommend alternative routing to avoid Iranian airspace altogether where possible. That shift reflects caution rather than past safety failure—and aligns with current regulatory climate.

Link: https://www.icarusjet.com/trip-support/trip-support-is-it-safe-to-over-fly-the-iranian-airspace/