The plan also entails the hiring of 500 flight personnel, including cabin crew and pilots in 2019.
It also will see the former flag carrier buy eight new aircraft in 2019, on top of one that went into use last month, for around 10 new long-haul routes.
Trade unions representing Alitalia workers said on Friday that they will stage a one-day strike on April 5 after a meeting with management on the plan.
"We confirm the strike, it will be on April 5," Claudio Tarlazzi of the UIL Trasporti union said.
Alitalia announced on Friday that 40 per cent of its national and international flights scheduled for Monday will be cancelled due to industrial action by some unions representing air-traffic controllers.
Several unions are set to take action between 1:00 pm and 5:00 pm while that CUB Trasporti union is set to strike all day.
With ANSA