Originally Posted by
highroller4321
In a way everyone on this forum is "competing" on how to upgrade and beat each other out of the seats. That kind of explains why there isn't a simple how to guide. It seems the airlines are always changing so that makes it more difficult as well.
That's not just defeatist, it's naive. Delta publishes its 'domestic' upgrade priority, and has for years. Get a higher elite status. Buy into a higher fare class via the advanced search page. Done.
https://www.delta.com/content/www/en...-upgrades.html