US Airways Group Inc. flight attendants have voted 94 percent in favor of a strike authorization, the Association of Flight Attendants-CWA said Tuesday.

The 6,700 members are working under contract terms from before the 2005 merger of US Airways and America West Airline.

Flight attendants called on management to finish the US Airways-American West merger by negotiating a single unified contract for all US Airways flight attendants. The issue is disparity in pay and seniority between flight crews that work in the "east" and "west" United States.

"That means pre-merger America West and US Airways flight attendants still don't work together," said AFA presidents Roger Holmin and Deborah Volpe. "We may not fly together, but today we've made clear that we will walk out together if" US Airways CEO Doug Parker "pushes this to a strike deadline."

Tempe, Ariz.-based US Airways is the dominant airline at Philadelphia International Airport.