Originally Posted by
GBadger
"Pay with Miles" tickets are not eligible for upgrade I believe. That may have changed when award upgrades went into effect, but I'm not sure.
Pay with Miles tickets
are eligible for upgrades and follow the same rules/restrictions as award tickets.
I pay with miles all the time when I'm flying ~1500 or less rt. I'd rather spend the cash where where I can earn 2x-3x the MQMs for the equivalent $.
I just flip back and forth between award and PWM to use the least amount of SM.