Originally Posted by 3Cforme

Check ExpertFlyer for X/A inventory more than 24 hours before your flight. (If you're not willing to spend $10/month to ride up front, what are you doing on this Board?) If there are any spots available, then check in online 23 hours, 59 minutes, 59 seconds in advance of your first flight. Then ask to be activated on the upgrade list at the airport. One must do BOTH.

It's a fact that some popular routes have first sell out paid or are so full of EXPs that we Plats are stuck in back - exit row aisles, of course.