I applied online through Southwest Airline's website. A few months later, I got called to schedule a phone interview. A week later, I interviewed with them. After that, if you make it to the second round, they will fly you to their headquarters in Dallas (DAL) for a face interview with recruiters and managers.

Phone interview followed by on site interview. Very chill experience. They do real job and focus more on details. Basically going through resume and pick there interesting points. Just be ready to show them who you really are and they will hire you if you are good candidate. Three person on site interview, one hiring manager and two department manager. Usually takes about 40 minutes. Good environment