...for what it's worth...in the couple of conversations I've had with Delta IT people regarding essentially the same type of erroneous information, the response has always been it must be related to the cookies. Try clearing your cookies on your browser.

Now I have no idea how the cookies work/don't work with Delta's search engine - but nothing like this was ever a problem at NW (and not trying to start a DL vs NW thread). It just is what it is.