Kim Kardashian and Kanye West -- Slumming It On a Commercial Flight

Kim Kardashian and Kanye West -- Slumming It On a Commercial Flight: Kim Kardashian and Kayne West did the unthinkable in NYC -- boarding a COMMERCIAL flight ... you know, the kind regular folk with regular sized butts use. Yes, it was a very packed flight.  Check out TMZ on TV -- click here to see your local…