Im still relatively new to these boards but my question is what is the normal amount of bid periods for a regional and even the majors? Since on apc some of them say 12 30 day bid periods and others say 13 28 day bid periods and most dont say anything. Then at regionals like expressjet,asa etc and majors like southwest, jetblue, continental etc what is the usual amount of bid periods? Thank you ahead of time for the information.