According to US Airways Executive Vice President Lawrence Nagin, the carrier has planned to make alternative arrangements for passengers or compensate them on a case-by-case basis should problems arise.
If a strike does occur, the union has said that attendants probably would not walk off the job en masse. Rather, they would target selected routes with impromptu walkouts that could surprise management and passengers.
But Weintraub said the carrier will do what everything it can to avoid "random chaos."
Weintraub declined to comment on the state of the negotiations, citing restrictions imposed by the National Mediation Board, the body that oversees transportation disputes in the labor industries.
The last time a labor dispute shut down a major airline was in 1998, when Northwest Airlines' pilots went on strike.
--The Associated Press contributed to the reporting of this story.