Originally Posted by
jackal
Can't schedule data be legitimately obtained from the GDS?
Not that you (personally) have (or are willing to pay for) GDS access, but I don't see why this necessitates scraping the UA site--schedule data can be obtained from many other sources, either directly or indirectly.
Yes, it can. And it can be acquired illegitimately, too. See
http://wandr.me/tools/flight_timetable.aspx for proof of that.
If users are willing to build a second copy of their data on a 3rd party site then tracking changes should be relatively trivial. But I'm betting that people mostly don't want to enter all their flight data a second time. Parsing confirmation emails a la Traxo/TripIt would work, but I don't have that in my repertoire yet.
n.b. The link above is to a travel-related commercial site which I operate. FT rules require that I disclose that in the post.