About the same as it looks like now. Crowded, poorly designed airports, packed airplanes with seats that grow narrower and closer together every year, airlines that charge for everything and anything, surly airline workers, and a better than even chance that they're going to lose your luggage. Oh, and ever higher airline fares.
As for the TSA, that is not on the airlines. And yeah, it pretty much sucks for what they accomplish (not much).
I hear now they are making different levels of coach, and the seats get smaller and smaller the crappier the section is.
Not to mention the arrogant, smelly, entitled rude passengers that pay rock-bottom prices and demand and expect First Class accommodation.
I only fly First domestically and Business internationally. . .and even then, it is barely tolerable because passengers are dressing down (wearing pajamas), don’t believe in Huygens and feel they are the center of the universe.
Hate airline ground and aircrew staff, REALLY hate TSA, and have no love for the traveling public.
But that’s just me. . .