Applied through university recruiting. Had a first round behavior interview on campus. Pretty standard interview (why AA, run through resume) and a very informal case related to the airline industry (they don't expect you to know industry specific information though. Received email for a digital second round case interview that had me do some analysis base on an excel file sent to me and reply within an hour. Flew to Dallas for final round interview that consisted of a lunch session and 3 separate interview with 3 different departments. They were all mixes of behavior and simple cases.