(Thanks Tommy) U.S Department of Transportation numbers show that airline on-time performance for the month of August was 71.7%.

More than 1 in 4 flights, on average, were delayed more than 15 minutes. Of the largest U.S carriers, United ranked the worst with only 66.2% of their planes arriving at the scheduled time.

August numbers, which are best described as "terrible", are slightly better than the month of July at 69.8% - one of the worst since the government started keeping records in 1995.