Applied online. Got a call from the recruiter within couple weeks, asking for general availability, interest in the company, etc. At the end of the phone call, she scheduled me for the next round with the hiring manager of the group. In total there were 4 rounds. Three over the phone and skype with different managers and the fourth one was on-site in Las Vegas (with five 30-min rounds with 10 people in total). Phone interviews had standard questions related to the airline operations, scenarios, past experiences and behavioral type. Third round of interview included an hour excel test (mainly calculating financial parameters based on annual financial statements). Questions in fourth round were similar to the phone interview with an addition of brief management-style presentation. The recruiter got back to me with an offer within couple days after the on-site.