Attitudes to red-eyes are abit different here in the US. For business people, if you have to get from LAX
to NYC for a meeting, the easiest way is often a red-eye.
Any flight that leaves the West Coast in the morning doesn't arrive on the East Coast until much of the day is over.
TWA used to do terrific business with their coast to coast red-eyes, JetBlue does great with theirs, and little Frontier is getting in on the act.
In the case of Frontier, it's not even coast to coast, but DEN
. Those flights are regularly sold out. They are starting a coast to coast with LAX
They even have week-end red-eyes DEN
which also do very, very well.