No degree?
My mentor in aviation and flight instructor flies for Southwest and does not have a degree. This has been asked before and many people have written about it. If you do a search you'll find more information. It states "preferred" on the website as opposed to "required". You should apply and if it is within your reach get a four year degree since it would make you more competitive not only at Southwest but at other airlines where it could be required. If you decide not to get a degree, ask yourself why would an airline desire a degree? Then make sure you have those attributes that they are seeking (i.e. discipline, dedication, study habits, etc...). Above all, good luck...