The Association of Professional Flight Attendants announced Sunday morning that its members have approved the "last, best and final" contract offer from bankrupt American Airlines.
Members accepted terms of the deal by a 60 to 40 percent margin.
In a statement, APFA leadership maintained that it has "zero confidence" in American's management team and strongly endorsed merger efforts by US Airways as "the only way for American Airlines to grow and compete and perhaps even to survive."
"Our bankruptcy team firmly believes we have achieved everything possible," the APFA statement said, adding that approval of the deal by the court is expected to take place within the next two weeks.
In a statement, American Airlines spokesman Bruce Hicks said the carrier was "very pleased" by the union's decision.
"With ratification, our flight attendants will see many benefits that would not have been available without a consensual agreement, including an Early Out incentive which could potentially eliminate the need for more than 2,000 furloughs," Hicks said, adding that pay increases over the next five years are also factored into the agreement.
Last week, a bankruptcy court judge rejected a motion by American's parent company AMR Corp. to throw out its labor contract with union pilots, a decision which the airline is appealing.
American filed for Chapter 11 reorganization last November. The company has said it is "making substantial progress" in its efforts to restore profitability and growth.