 According to Redfin, the median sales price of homes nationwide hit an all-time high over the past four weeks of $398,000. That's nearly a 5% increase from just one year ago. Delta says it's having trouble filling seats this summer. The claim is leading to the airline lowering ticket prices to compete to attract customers, which is hampering its profits. While travelers are heading out in record numbers, Delta claims airlines added too many flights this summer.