Just got this from American Airlines.
Sale fare from DFW to BZE is $289. The rules for this fare are:
These International Weekend Getaway Fares are valid for Economy Class travel next weekend and are available on AA.com. Instant online purchase is required and must be ticketed no later than 11:59 p.m. (CT), Friday, August 30, 2002.
Depart Thursday, September 5, 2002 or Friday, September 6, 2002.
Return anytime the following Monday or Tuesday. 7-day advance purchase is required.
5 day stay maximum.