Saudi Arabia: The kingdom has explicitly stated it will not permit US use of its airspace or bases for attacks on Iran. Saudi Crown Prince Mohammed bin Salman communicated this position directly, emphasizing that Saudi Arabia would not allow its territory or airspace to be used in military actions against Tehran, especially in conflicts where Saudi Arabia is not involved. Reports from early 2026 (e.g., Reuters, Fox News) confirm this stance persisted even amid regional escalations.

•  United Arab Emirates (UAE): The UAE has similarly barred the US from using its airspace or territory for military actions against Iran. This includes refusals for logistical support, refueling, or staging operations. Announcements in January 2026 highlighted this policy, aligning with broader Gulf efforts to avoid direct involvement.

•  Other Gulf states (such as Qatar and Kuwait): These countries have also informed the US that they would not allow their airspaces or territories to serve as launchpads or transit points for attacks on Iran, including for refueling or rescue operations.

•  Jordan and Turkey: Reports indicate these US allies in the region have refused to open their airspace or bases for US strikes on Iran.

•  Iraq: Iraq has refused US use of its airspace for strikes on Iran in certain contexts, though some operations reportedly proceeded despite this.

Source Grok.

I'm honestly a bit confused by this - since any ground based aircraft, US or Israeli, attacking Iran must fly through these countries airspace?

Carrier based aircraft perhaps not.