How to Fly V.I.P., Perk by Perk – NYTimes.com
Don’t fly enough to earn elite status on an airline? There are plenty of other ways to buy those perks and preferred treatment, either à la carte or through the right credit card. Here is how you can fly like an elite passenger, even for one trip a year, on several airlines. (Carriers without an elite program were not included.)
A list of the vip perks for 5 popular US airlines, and how much it will cost you. very good list to help you maximize your upgrades.