Collective bargaining with the Transport Workers Union raises the prospect of higher operating costs for the airline, which filed to go public last month. The carrier reported second-quarter net income of $37 million on Tuesday after posting its first annual profit in 2013.
The vote to unionize Wednesday follows a decision in April by pilots at
"With this vote, flight attendants will have a say on how to further improve Virgin along with their own work lives," John Samuelsen, TWU International executive vice president, said in a statement. "This is a chance to make the airline better for both customers and workers."
Virgin America's attendants supported the TWU with 58% of the ballots cast, the labor group said. It was the second union vote for attendants at Burlingame, Calif.-based Virgin America, who rejected the union in December 2011.
Negotiations for a first contract will begin this year.