Sheikh Islam Ahmed Madobe's inauguration as Jubaland President was postponed following rifts between him and Mogadishu administration.
The former Ras Kamboni Brigade commander, a close ally of Kenya Defense Forces, was set to assume his second term in office on Thursday.
Since August, President Mohammed Farmaajo has refused to recognize Madobe, accusing Kenya of imposing him as the regional leader of Jubaland.
On Sunday, the federal government cancelled all flights to Kismayo Airport, a move viewed as a strategy of blocking leaders from attending the inauguration.
"The Somalia government has suspended all flights to Kismayo in the period between Sept. 23-26. The inauguration of Jubaland leader Ahmed Madobe is on Sept 26," reports indicated.
On Sunday, the government blocked former President Sharif Sheikh Ahmed from travelling to Kismayo for Madobe's inauguration.
"Somalia has been waiting almost 30 years to take control of it’s airspace. It’s sad situation the government uses the management of the air space as a political weapon that can have a serious ramification on the political stability and the unity of the country," former President Sheikh Hassan Mohamud said.
Early this month, Sheikh Ahmed Madobe warned President Farmaajo of possible war should the sanctions against his regional government persist.
"We took dead bodies and wounds on our shoulders as we entered Kismayo while he was having coffee at Starbucks at the time," warned Sheikh Madobe.
Kenya has been backing Madobe's government since his victory in 2013. He helped KDF troops run over Al-Shabaab militants in the Kismayo city a year earlier.