For months, airfare from STL-MCO has been over $300 on any airline for mid-Dec. When SW opened dates thru Dec 12 (which only covers my way TO Orlando), the fare was still $150 one-way. Now I see they're offering a $100 one-way fare that expires tomorrow night. Assuming the schedule for the rest of Dec doesn't open up before that fare expires, what do you think I should do? Should I buy the one-way now and hope the return fare on Dec 16 is equally as good? Adding to my dilemma is that DW and I are both close to having enough miles for a free ticket on American's FF program. So we'd REALLY like to fly AA, but their fares are still $300 rt. And we don't fly that often to where we'd easily use the SW credit. I'd appreciate opinions.