IAH #1 in on-time performance, but why?
Anne at blogHouston has a post
about IAH being the #1 on-time airport in the country in June. The Houston Airport System attributes it to the capital improvement program (i.e. the new runway), which is fair - that is certainly extremely helpful - but what's the more important reason? June was the driest ever on record, something like a total of 1/10th of an inch. No thunderstorms = no delays. The storms came back in July, and Houston and Continental felt it
During the month, Continental recorded a U.S. Department of Transportation on-time arrival rate of 69.5 percent. The carrier's on-time arrival rate was impacted by severe weather, which plagued the carrier's hub operations in both Newark and Houston throughout much of July. Despite these difficult weather conditions, Continental maintained a systemwide mainline completion factor of 99.6 percent.