JEDDAH — Saudi Arabian Airlines announced on Wednesday that the national carrier would allow only those passengers who have received two doses of coronavirus vaccine to travel on board its domestic flights effective from Sept. 1. However, there will be exemptions for groups who are not obligated to take the vaccine such as children under the age of 12 years or those exempted from taking the vaccine purely on health grounds by the concerned health authorities in the Kingdom. Saudia urged the passengers to take all the precautionary measures and preventive protocols as well as its new directives with regard to vaccination against coronavirus.