My 2 cents (or 2p, even) regarding Southwest and degrees.
Southwest, and other airlines as well, do not always require a 4-year degree, especially if the applicant is from a country where (perhaps as in the UK) a Uni degree was not a previously necessary prerequisite for the vast majority of the population. They will take into account the country of origin of the applicant, and the level of education completed in that country.
Don't close a door on yourself that may actually in fact still be open.