I applied through a recruiter. The process took 4 weeks. I interviewed at Delta Air Lines (Atlanta, GA) in June 2015
Interview
Recruiter contacted me via LinkedIn. I initially did not respond back until about 2 weeks later. Once I was able to contact the recruiter, he set up some time to speak with him. The HR phone interview was straightforward. Why are you looking, etc. I was then scheduled for an in person interview with the Manager and Sr. Director about a week later. The overall process from first contact to decision was about 1 month.