Director-General of the NCAA, Musa Shuaibu Nuhu, revealed the news during a Presidential Task Force COVID-19 briefing in Abuja.
Nuhu said while airlines and airports were ready to operate, other non-aviation logistics prompted the one-week extension.
He described September 5 as a sacrosanct date, noting that the initial announcement was anytime from the 29th.
International flights were expected to resume on August 29 before the extension.
