As for MKE-MCI-LAX trouble, I've seen those via-MCI west coast connections periodically missing on days when clearly they are not sold out. (Sold out on one leg or the other is always a possibility, of course.) Not sure what's up with that, but obviously it's something they should remedy. You got the flights you wanted because you knew they were supposed to be there and called, but other people will instead choose one of the via-Denver connections or book elsewhere.

The old Midwest site was plagued with that kind of problem, especially when the NW code sharing flights were there, because it only show a certain number of flights and chose the cheapest ones. So if you were looking for MKE-SEA the actual YX flights were often croweded out by a variety of MKE-MSP-SEA flights (including MKE-MSP on either YX or NW) and the MKE-SEA nonstop or via-MCI flight didn't show.

There doesn't appear as clear or obvious a reason why sometimes flights like SEA-MCI-MKE don't show among the SEA-DEN-MKE options. At least not yet. But hopefully they are more successful than Midwest was at correcting missing flights. The only thing which really ended the YX problem was when they stopped code-sharing with NW/DL and all those connecting options were gone.

If you search LAX-MKE the flight does not exist. (1736)

Searching LAX-MCI it does show up.

MCI-MKE also shows.

It is the same aircraft though MCI.

They don't seem to know what is going on either. I recall some time ago when Frontier introduced the 319s from MKE into the long haul markets, they also disappeared for a few weeks.

If flights disappear, Travelocity always seems to be showing the correct schedule.

I haven't been able to login to my account since the switch over. Finally called the ER Center tonight and found out that they changed my password to all upper caps.