I thought this quote showed an interesting juxtaposition of facts:
"United in the first quarter of 2013 posted its best on-time performance in a decade, with 81% of domestic flights arriving on time. In the 12 months through April, United was second worst among its major rivals, with a 77% on-time rate, according to U.S. Department of Transportation data."
Although, I still don't understand how the 81% was their highest on-time percentage in a decade. I thought they were much higher prior to the merger.