Join Date: Feb 2003
Location: Alexandria, VA - DCA
Programs: BA Gold, American Airlines, Marriott Plat, Hilton Diamond, IHG Diamond
Posts: 5,075
Availability is going to vary wildly depending on season, destination, and day of the week you want to fly. Upgrades to Rome in the summer months are nearly impossible, while upgrades to Frankfurt on a Tuesday in the off-season would be much easier. If this is for a leisure trip, I'd pick a destination (with an alternate) and then call the CP desk and ask about availability on the flights you want but have yet to book.