AUS-RDU

SAT-RDU

AUS-MAF (old route will be discontinued 05-08-2009)

AMA-ABQ - old route recently discontinued.

MAF-ELP - old route recently discontinued

LBB-ELP - old route recently discontinued

HOU-MCI (there was only one nonstop - everything else is a one-stop through OKC/TUL/DAL)

HOU-PVD

From a September 8, 1980 route map:

AUS-CRP

CRP-DAL

HRL-DAL

From a January 31, 1982 route map:

HOU-LBB

From an October 4, 1994 route map:

SLC-SMF