Okay! I’m ready to apply. What now?
You start your application online, on the website of the airline to which you’re applying. For instance, you can apply to United Airlines here or JetBlue Airlines here. This website tracks airlines that are currently hiring.
You’ll need a polished resume and a classy headshot. Yes, you can apply to multiple airlines. When one is interested, they’ll contact you for a one-way video interview -- questions will appear and you’ll answer them verbally, but you won’t actually be speaking to a real human person. The questions will probably follow something along the lines of the STAR format: Situation, Task, Action, Result, i.e. asking how you’d handle different scenarios. If you’re not selected the first time around, don’t be discouraged -- you’re allowed to keep applying, and it’s extremely common to do so.
If things go well, this will be followed by an invitation for in-person interviews at headquarters. Politely confirm with your interviewer that the airline will be covering your travel costs for this; you can expect that most will do so, but it’s not a given. If that interview goes well, you’ll be given study materials and enter their training course, which will usually take a month or two to complete. There will be exams both written and oral, plus physical drills. You’ll learn security protocols, First Aid, evacuation procedures, how to use in-flight equipment, how to prepare the food and drink carts, how to interact with passengers. There will be a final exam and a test flight, and only then, after you are certified, can you hope to be formally offered the job.
The whole process could be completed within just a couple of days or last as long as a year. Most likely, it’ll take three or four months.