“While the strike ending and workers returning to the shopfloor is a meaningful step in the right direction, ramping [production] back up will take time," Bank of America Global Research analysts said, maintaining their Neutral rating on the stock with a price target of $170.

The new offer delivers higher pay increases and a bolstered ratification bonus that would deliver each worker $12,000 if the union approves the deal, according to the International Association of Machinists and Aerospace Workers (IAM), the union representing 33,000 Boeing workers in Washington, Oregon and California.