In the late 1990's most major
airlines in the
world
formed a number of
airline alliances. The
alliances allow the airlines to share in providing priviledges to
frequent passengers such as complimentary lounge
access and priority treatment at more
airports around
the world.
Some of the alliances are:
After
http://www.alpa.org/internet/prescorner/hup_1-2000/challenge_2.htm
http://www.latimes.com/travel/insider/19990307/t000020689.html