Originally Posted by btonkid12345

ATL-JFK has fewer frequencies and more wide bodies - which are more desirable up front - so why would it be easier to rebook? LGA flights, aside from peak business times, often have lots of space.

With global entry, sure, 1:25 is totally doable. But it all depends on the lines you encounter en route. Without global entry, and if the ATL passport inspection lines are long, it may be difficult.