I just did an up-fare on AS and was surprised at how easy it was. I credit my miles to AA. Upfared from H (75% RDM/50% EQM) to P (150% RDM and EQM) on a 3-hour flight for $99. Some airlines seem to choke on this because you aren't changing the flight...you just get an error message saying you must change the flight. But Alaska handles it well.


Now kicking myself for doing two gate upgrades earlier this year for $99 each. Gate upgrades, of course, don't actually refare you into P, A, or F. I'll never know if those flights were sitting there, a week ahead of time, with P availability for an extra hundred bucks...