Unconfirmed rumours (the type that can never be confirmed because of the utter shame) that the US told Iran to just accept a missile or two so Israel can save face and then let it be over with. Maybe the Arab states know this and thus green-lighted usage of the airspace?
https://x.com/snarwani/status/1780199469172113877
https://thecradle.co/articles-id/24419