I've been getting ready to grab a biz fare to somewhere in Europe for Thanksgiving. Saturday nite, virtually all fares hovering around 2100 to most major cities. Sunday morning, everything close to 6000. Showing it on AA and Matrix (indeed virtually all airlines showing nearly tripled fares -- overnite). Were they loaded as 60 day advance purchase or some such? It was not availability as I was watching that pretty carefully, too. Plenty of biz seats to places I was considering. I'm in the midwest, but have checked JFK (as a for instance) and all are up up up ... Any theories?