I was checking prices from SEA to ATH for 8/2-8/16. FareCompare gives me $656 RT on CO; I go to CO and the price is $1300+; the fare rule on FareCompare is 'LLX15SE'. What/how does this work?? I am totally lost on this one...FareCompare is the only site that comes up with this low rate; every common site has about the same $1300 rate...and I doubled-checked..FareCompare says its RT @ $656. Input please!