Originally Posted by
mcjava
Totally free upgrades don't happen. On NWA, there have been freebies given on the flight out of the US, to show economy class flyers what they are missing.
Wrong. Some international routes (Canada, Mexico, Caribbean, and Central America) are done as normal upgrades for NW/CO elites, and now I assume DL as well.
There are certainly Op-Op opportunities as well. I usually get 1 out of 4 segments op-uped flying to Asia, if I'm on a coach ticket.