Ethiopian national carrier on Tuesday cancelled flights to Bahir Dar, the capital of Amhara, following clashes between local fighters and federal troops.
The Ethiopian Airline cancelled flights to three other airports in the northern region last week.
The administration of Prime Minister Abiy Ahmed this week imposed a six-month state of emergency in Amhara as a result of the upsurge in violence there.
“Flights planned for Wednesday, Thursday and Friday to Dessie (Kombolcha), Gondar, Lalibela and Bahir Dar have been cancelled,” the Airline said.
Nine months have passed since the horrific two-year conflict in the adjacent Tigray area of Africa came to an end, and there are now new turmoil in the continent's second-most populous nation.
Amharan fighters were also drawn to the conflict.
Since the federal government announced in April that it was eliminating regional forces around Ethiopia, tensions have risen.
Amhara nationalists objected, claiming the action would undermine their territory. Foreign governments have issued travel advisories in response to the riots.
According to AFP, residents noted that fighters from the local Fano militia were facing off against federal forces.