Hi!
1: Republic/Chautauqua/Midwest/Frontier/Lynx/HA airline
2: DAL/Comair/Mesaba/Compass/KLM/Air France/Martinair/Kenya Airways/Precision Air/JAL
3: AA/Eagle
4: Mesa/Freedom/Go
5: Skywest/ASA
6: Alaska/Horizon (really should be included in DAL)
7: TSA/GoJet
8: AWAC/USAir/Piedmont
9: Cape Air/Nantucket Shuttle
10: Great Lakes
11: Air Canada/Jazz
12: That new one at Toronto City Airport

I'm sure I've forgotten someone, or made some errors in there...

cliff
NBO