Airlines should offer a flight service where you pay a heavily discounted fare up front but you don't know when it will fly until a day before. For instance, yo

Airlines should offer a flight service where you pay a heavily discounted fare up front but you don't know when it will fly until a day before. For instance, you would pay $250 for a flight tfrom LAX to JFK, and they would put you wherever they had the most vacancy. (or whatever is cheapest) Sure, you might end up on a 5am flight, but for some people it'd be worth it.