I applied through university. The process took 2 weeks. I interviewed at Airbnb (Los Angeles, CA) in Nov 2015
Interview
It was a basic interview process. Phone interview --> Skype call. Fairly easy process. If you can get through a basic phone screening, you shouldn't have any problems. Your motivation is key.
I applied online. The process took 1 week. I interviewed at Airbnb (San Francisco, CA) in Sep 2015
Interview
Efficient. Timely. Fairly brief. 20-30 minute phone interview followed by an in person interview abouta week later. When I arrived, I was promptly greeted and then introduced to the manager. She was personable and relaxed. Questions were typical and to be expected for the role. Nothing outlandish.