This might be related to http://www.flyertalk.com/forum/unite...flyertalk.html

Over the past few days, I have seen (in the late evening West Coast) some flights with blank fare class availability -- not zero, blank -- when looking at the Flight Info in Expert Mode. And the flights are Xed out. By the next morning things are back to normal.

For example, at this moment UA598, SFO-DEN (& UA 720) is doing this for multiple days in the first week of Nov (and more)


Yes the US Air code share on UA metal earn DEQM