Originally Posted by Thichbay

I am in the same situation: originally have a F booked on 11/17, but I want to change it to a day later. JL has been consistently release more F at T-14 for HND-DFW in the last couple months. Those seats usually get snagged within a few hours. I was lucky to have just enough internet to book my F seat for 11/18 during taxi & waiting for take off at SFO yesterday at 5pm.

For SFO/LAX, JL may release more F/J when it gets closer to departure. I usually see more availability at ~T-3