Oh dear. Hardly a progressive move. 

Saudia will now officially forbid women from sitting next to men who aren't either their husbands or mahrem (Arabic for "male guardian").

But it gets better...

Saudia Director of Passenger Services, Saad Al Seuleiman, said in a statement to the local media that women would be hired as "ticket sales ladies" throughout the kingdom. However, he stressed, “They will be deployed in places assigned specially for them away from the main terminals. They will work in places confined only to women, the policy of Saudi Airlines is clear in not allowing women to mix with men.”
Andrew W. Sieber

Andrew W. Sieber