I applied in-person. The process took 2 weeks. I interviewed at Delta Air Lines (Atlanta, GA) in Jun 2008
Interview
Hired as a co-op, left 12 years later as a Senior Manager. After the Masters degree and working a year as a co-op, was offered four different positions inside the company. At that time, Delta did very little hiring in Management positions from outside.
Interview questions [1]
Question 1
One of my interviews in 1997 consisted of an hour long questions/discussions on Forecasting techniques, Operations Research, and Statistics.