Understanding the Summer Air Travel Mess

More people flew out of airports in the United States on Sunday — 2.46 million according to the Transportation Security Administration — than on any other day so far this year. The Fourth of July holiday is expected to be even busier, with Hopper, a travel booking app, predicting that nearly 13 million passengers will fly to, from and within the United States this weekend.

The question for many travelers is whether they can trust airlines to get them where they want to go on time.