From: USA Today - http://travel.usatoday.com/flights/...-seniority-deal/592330/1?loc=interstitialskip Southwest cleared another key labor hurdle in its efforts to integrate AirTran, which it acquired earlier this year. The latest centers on the airlines' flight attendants, with the unions representing the workers agreeing to a tentative deal on how to merge seniority lists, The Associated Press reports. The Fort Worth Star-Telegram writes: The agreement, announced Monday, provides economic sweeteners for both groups of flight attendants and a way to integrate the AirTran employees into the Southwest seniority system. The latter was accomplished by Southwest agreeing to open a flight attendant base in Atlanta, where the bulk of the AirTran flight attendants are based. Their seniority at the base will be based on date of hire. The Dallas Morning News adds "the agreement, while not the last needed by the two carriers, is a crucial step because it covers the largest group of employees at Southwest and AirTran." The deal must still be ratified by attendants, Air Transport World reports. However, there likely will be no vote on which union the attendants will choose, according to The Wall Street Journal. The paper writes: Normally the two groups, if represented by different unions, also have to vote on which union will represent the combined group. However, in this case, because Southwest is so much bigger, it is expected that AirTran attendants, represented by the Association of Flight Attendants, will be folded into the TWU. Southwest has already reached a deal on integration with its pilots, and it secured tentative pacts earlier this month with its aircraft mechanics and flight instructors, The Atlanta Journal-Constitution reports.