travelocity has the same BS. I used to like their last minute fares -- they used to be really cheap, used to have coupon codes, and used to actually be available for purchase at the price they quite.
Now they're really cheap, but when you actually try to buy it, it says that package is sold out. when you start a new search, it's back! Or, when you go to pick a flight, it will say the flights availabel at your price are gone, but we found tehse for you (for $100 more). when you start a new search, the same old cheaper flights return.
all scammers.