Originally Posted by
HLCinCOU
Seems to me that even if it were true there were multiple basic econ fare codes, the Matrix approach would still work just fine as long as you knew what they were. Also, it doesn't seem to be true that there are multiple basic econ fare codes. If somebody has more information on the subject...
Basic Economy fares on AA are dual inventory fares. There isn't, to my knowledge, an easy way to filter them out with ITA Matrix.