D. Star Alliance

Luthansa (LH)
SAS (SK)
BMI (BD)
LOT (LO)
TAP (TP)
Varig (RG)
USairways (US)
....etc
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Star Alliance is the world's first and largest airline alliance. Founded in 1997, its name and emblem represent the five founding airlines, Air Canada, Lufthansa, Scandinavian Airlines System, Thai Airways International, and United Airlines. Star Alliance has since grown considerably and now has more than 21 full members with another two expected to become full members by 2009.

Blue1airtoair2 US US US AC AC OS SAA NZ767 OS SQ ASIANA ASIANA NH UA OS OS OSA330_300ppi LO nz_b747-3 10th-anniversary_fr_256x234 AC AC AC AC AC adria_brnik%2001 adria_brnik%2008 adria_brnik%2010 US AC AC AC AC AC AC BD CROATIA CROATIA LH LH LH LH-check-in-MUC-large LH-lounge-MUC-5-large LO LO LO LO LO logo member-airlines_fr_256x99 NH OS OS OS SAA SK TP