It’s 4 p.m. on a weekday afternoon. You’ve braved traffic, arrived to the airport with time to spare, made it through security and are seated at the gate.
And now the key question: Will your flight leave on time?
On the micro level – one flight at a time – it’s a roll of the dice. A late-arriving aircraft, crew-scheduling program, air-traffic-control issues and weather all can lead to schedule hiccups.

