I hear you! This has gotten insane on DL lately. I was trying to book two TATL r/t a couple of days ago. Searched by schedule because I wanted to try out that AF 380. I build the itin, it showed all T for a perfect price. Clicked on purchase ... "We're experiencing some turbulence".

Did the whole thing again, all flights came up a Q now, price pretty much doubled but still within my limits. Clicked on purchase, "the fare has changed ..."! Tried it AGAIN and all segments came up as M for an more than insane price. I let that particular trip go just to encounter the very same on my other trip.

UACO ended up with two more revenue trips ...