Originally Posted by
jsloan
Giving seat away (some within CoC, some not):
Alaska:
https://thepointsguy.com/2016/03/when-can-airline-give-seat-away/ [ report of arriving 15-20 minutes before flight, if it was 15 no fault, no suggestion that flight was moved up in departure w/o warning], and author of blog post never bothers to find out if person arrived 15 or less or more, which is a material difference]
Delta:
htthps://money.cnn.com/2017/07/17/news/can-airlines-move-your-seat/index.html [ media report on moving seats, not moving up flights or denying seat before published cut off]
Delta Gave Away My Assigned Seats[ thread on moving an assigned seat, not the issue]
https://www.airfarewatchdog.com/blog/20217947/the-airline-gave-away-our-seats/ [ arriving at gate 5 minutes before flight, so past the cut off, not OP's issue]
Early departure:
Delta:
Delayed flight left early. Proper?[poster was not denied boarding, flight was simply boarding when they arrived, and then left slightly early. Planes leave all the time "early" - when everyone has boarded]
https://crankyflier.com/2016/11/14/why-did-delta-move-my-departure-time-earlier-at-the-last-minute-ask-cranky/ [ report says TEXT WAS SENT ABOUT NEW DEPATURE, no one was left behind or denied boarding. This is actually an e.g. of what United should be doing]
I checked every single one of your DL and AS citations, all are
badly off point. You looked long long long and hard, and could not find any e.g.s on DL or AS where people actually were denied a seat when they arrived at the gate by the published (15 min) cut off time or where the airline moved up the departure time and then (a) did not send e-mail/text, etc notice and (b) left people behind who arrived within 15 minutes of the last published departure time.
Maybe AA or some other airline does the cruddy things that UA does, I did not bother to check the rest of the citations you gave me, what I did check was so off point that looking at others was pointless.