Qatar Airways has formally been barred from overflying Yemeni territory as part of the broader Gulf blockade on the carrier's operations.
Saudi Arabian authorities have published a NOTAM on behalf of Yemeni counterparts confirming the ban.
It states that all aircraft registered in the state of Qatar are "not authorised" to overfly the airspace of Yemen, effective from 7 June.
Flights by Qatar Airways – and other Qatari aircraft – have already been blocked from Saudi Arabia, Bahrain, Egypt and the United Arab Emirates following the cutting of diplomatic ties with the Gulf state.
Saudi Arabia has been heavily involved in the civil conflict in Yemen, supporting those loyal to Yemeni president Abdrabbuh Mansur Hadi against the rival Houthi movement.
Yemeni airspace was already the subject of warnings to civil aviation traffic over the risks posed to aircraft by the armed conflict.
Source: Cirium Dashboard