I fly back and forth ORD/YUL to a client site a lot, and the commute is on my dime. I try to keep an eye on the fares, as they (used to) drop quite frequently, and I buy a bunch at a time. Travelocity's feature to search flexible dates has been very helpful in the past. For the past few weeks though, it keeps giving me low fares on NW, Continental and US, but when I click on them I get the message that The travel rules indicate that there are no remaining published departure dates/flights for this fare. Please make another selection. I understand that this happens when fares change, but these fares have not been available for at least three weeks (when I sent a message to Travelocity) yet every day, there they are.

It just makes me question the underlying programming....