When is the "sweet spot" time to book an airline ticket with good legroom?

@Tate
Congrats on your weight loss!

Justice said:
@Tate
Congrats on your weight loss!

Lol. I’m not sure how big the OP is, but thought it was worth mentioning.

Lennox said:
@Noel
Caution: Emergency exit rows with extra legroom don’t always recline, which can be annoying on long flights.

Fortunately, my flights from the middle of the US to these locations will only be about 4 hours each way.