How do airlines decide who gets their seat upgraded?
 

http://img-s-msn-com.akamaized.net/t...6&q=60&o=f&l=fEver wonder how airlines decide who gets a seat upgrade on flights? Airlines say it's strictly by the book: Loyal customers are rewarded based on their status in frequent flyer programs.But some flyers insist that once in a while, they...

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