North Texas’ two major airports rank middle-of-the pack nationwide in summertime flight delays, according to a new study.

About 76 percent of summer flights at Dallas-Fort Worth International Airport and 78 percent at Dallas Love Field are on time, according to a 10-year average compiled in the MileCards Third Annual Summer Flight Delay Study released today.

Newark Liberty International Airport in New Jersey ranked worst, with just 66.5 percent of flights arriving on time, and Kahului Airport…