&gt; The #1 perk any frequent flier will tell you matters the most is having competent people who pick up the phone instantly during IRROPS (e.g. weather&#x2F;flight problems). Simply using this once a year trivially pays for itself by putting you so far ahead of the regular queue I still get amazed sometimes.<p>I&#x27;m sorry to burst your bubble, but I get better service than you even when I don&#x27;t have status.  I can and do rebook my flights on my phone, with my preferred routing and timing before the rush for seats begin as other people go try and call someone or god forbid, walk up to a desk and stand in line to do it in person.<p>No status needed.  Delta&#x27;s app will definitely automatically recognize a delayed or diverted flight and allow you to rebook.  It even allows you to browse flights to alternate destinations, so I have totally switched from a plane going arriving at OAK to one arriving at SFO while taxing at SLC.<p>Oh, I also regularly switch to better seats in the days before my flight.  I switched from middle to window on my flight leaving tomorrow this morning and moved up seven rows on the return flight, all without needing to make a phone call.