About 33,000 workers at the aerospace manufacturer had been on strike for nearly two months, having rejected two earlier contract offers.

The deal includes pay raises of 38% over four years, and ratification and productivity bonuses. Boeing refused to meet a demand to restore a company pension plan.

Approval of the deal with 38 percent raises over four years is a key step toward recovery after Boeing suffered billions in losses from the work stoppages and safety problems.