I've been thinking the same thing - that prices have gone up a lot. Specifically, prices for flights 2-3 weeks out to many destinations (DEN, LAX, LAS, PHX, FLL, PHL, SLC) seem really high. There are exceptions such as MSP which I purchased a next day flight last Thursday for $140. Delta was condiderably more and full whereas AS was empty both ways (going there Friday morning and returning Saturday evening).