I am running into an issue I have never had before on American. I am trying to check in for my flight from SEA - LAX - OGG set for tomorrow morning and it is not letting me check in online. I go through the entire process and I end up getting and error saying I need to check in at the airport. My ticket is a standard economy ticket (not basic) and we are not checking any bags. I am not sure why it is not letting me check in online.

I would prefer to check-in ahead of time as my flight leaves at 5:55am and I really don't want to deal with getting to the airport earlier than normal to stand in line at the checkin counter.