Spirit Airlines' unconventional strategy

FORT LAUDERDALE, FL - JUNE 17:  A Spirit Airlines Inc. employee walks under a plane on the tarmac at the Fort Lauderdale International Airport after striking pilots agreed on June 16 to a new contract June 17, 2010 in Fort Lauderdale, Florida. The airline announced that planes will start flying as soon as this afternoon. The pilots walked out on June 12 in a dispute over pay and benefits with the Miramar, Florida discount airline.  (Photo by Joe Raedle/Getty Images)
FORT LAUDERDALE, FL - JUNE 17:  A Spirit Airlines Inc. employee walks under a plane on the tarmac at the Fort Lauderdale International Airport after striking pilots agreed on June 16 to a new contract June 17, 2010 in Fort Lauderdale, Florida. The airline announced that planes will start flying as soon as this afternoon. The pilots walked out on June 12 in a dispute over pay and benefits with the Miramar, Florida discount airline.  (Photo by Joe Raedle/Getty Images)

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