[baltcode]

And where does ITA get it's data. I assume there must be a few competing standards, and the airlines use one of them to give their data to ITA. Why can't other companies get the data directly from the airlines?

[calbear81]

ITA get its data from ATPCO (http://www.atpco.net/atpco/aboutatp.shtml) the clearinghouse for flight data.