In stitching together a trip in South America I notice the OW timetable doesn't list an 06:50 departure CUZ-LIM. EF and ITA both include it. It's operated by LP, as are all the OW flights on that segment and I don't see any difference between it and the other 8 daily departures. (Yes, I'm asking for the same date (7 Jan 12) in each case.

Downloading the dataset didn't change anything.

My real question is 'is this a common problem?'. Makes the timetable less useful if one has to doubt it.

I've seen incomplete and wrong data on OW, *A and ST desktops, but most of it is valid. ITA and the airline websites are always good backups since they are closer to generating revenue. It's always about the money.

ITA, Cathay's timetable, and the OW timetable all seem to be very confused about the LAN 'affiliate' airlines which I believe are exactly like 'full members' to my flying butt and its Aadvantage membership.

I would add AA's booking engine to my damning-brush except one time I did see XL516 given as a choice.

I've just been looking at the desktop and PDF timetables and there seem to be lots of differences between them: loads of flights missing from the desktop one that I can see in the PDF.

Am I missing some setting that gets them back into the desktop search?

I might try some of the other downloadable ones. Are they any better?

The timetables aren't all updated at the same time or with the same frequency.

All the products I've tried are awful, probably because they're stand-alone pieces of software someone had to specify (considerable effort itself, to define a complete and accurate program) and pay to have written. Seemingly by the lowest bidder, paid for by a marketing department that would rather be designing brilliant Flash presentations or TV ads.

Tools that access the airlines' operational data bases directly seem to easily provide complete and accurate data (else TA's etc couldn't book flights) but don't necessarily offer convenient search functions for trip planning. Besides the usual ITA recommendation I like skyscanner.com because of its from-Here-to-Wildcard lookup feature.

Hopefully others will add their favorites.