
** FILE ** In this file photo taken June 7, 2010, a Delta Airlines Inc. plane sits on the tarmac at Seattle-Tacoma International Airport in Seattle. Delta Air Lines reversed a second-quarter loss with with what it said Monday, July 19, is its largest quarterly profit in a decade thanks to strong passenger revenue. (AP Photo/Ted S. Warren, File)

Delta Airlines travelers look at a departure screen Monday in Detroit. Although there are hundreds of thousands of travelers stranded across the U.S. and around the world because of Hurricane Sandy, airlines have controlled the situation by canceling fights early and keeping people away from airports, in accordance with rewritten regulations meant to avoid past mistakes. (Associated Press)

Delta Airlines travelers look at a departure screen Monday in Detroit. Although there are hundreds of thousands of travelers stranded across the U.S. and around the world because of Hurricane Sandy, airlines have controlled the situation by canceling fights early and keeping people away from airports, in accordance with rewritten regulations meant to avoid past mistakes. (Associated Press)

A Delta Air Lines departures monitor shows flights canceled because of Hurricane Sandy on Monday, Oct. 29, 2012, at Detroit Metropolitan Wayne County Airport outside Detroit. (AP Photo/Charlie Riedel)

A Delta Air Lines departures monitor shows flights canceled because of Hurricane Sandy on Monday, Oct. 29, 2012, at Detroit Metropolitan Wayne County Airport outside Detroit. (AP Photo/Charlie Riedel)

** FILE ** In this Wednesday, Aug. 1, 2012, photo, Delta Air Lines gate agent, right, hands the pilot paperwork as a ramp agent prepares to push the airplane back from the gate at JFK International airport in New York. Demand for long-lasting manufactured goods plunged in August because of a huge drop in volatile commercial aircraft orders. But in a hopeful sign, orders that reflect business investment plans rose solidly. (AP Photo/Mary Altaffer)

** FILE ** In this Wednesday, Aug. 1, 2012, photo, Delta Air Lines gate agent, right, hands the pilot paperwork as a ramp agent prepares to push the airplane back from the gate at JFK International airport in New York. Demand for long-lasting manufactured goods plunged in August because of a huge drop in volatile commercial aircraft orders. But in a hopeful sign, orders that reflect business investment plans rose solidly. (AP Photo/Mary Altaffer)

A Delta Air Lines jet takes off from Detroit Metropolitan Airport, one of the airline's hubs, in Romulus, Mich., on Friday, July 22, 2011. (AP Photo/Carlos Osorio)

Delta Air Lines passenger Jim Tonjes was high above North America when he bit into a hot turkey sandwich and felt a sudden jab in his mouth from a needle. (AP Photo/Jim Mone)