When you search for a one-way fare, and then go back to search again, the button for one-way fares remains selected but you get errors asking you for your return date, etc. If you first click the round-trip button, and then go back to click the one-way button, and then search, it works fine.

I am continually amazed that Delta's web site gets worse, not better, over time. Oh, of course there are times when miraculously something seems to be fixed or improved, but it's not even one step forward two steps back, it's more like many steps back, more steps back, one step forward, more steps back. Despite Delta's (relatively infrequent) claims to be working on this, someone on the top floor must believe that this broken web site yields more money for Delta somehow. Friends I have who work in IT and do sophsiticated web site development assure me that Delta could fix all of its problems if it really wanted to. Is IT trying to solve these problems using an Applie II or Commodore 64?