Delta planes line up at their gates while on the tarmac of Salt Lake City International Airport in Utah in this file photo taken September 28, 2013. Shares of Delta Air Lines Inc surged almost 5 ... more 
Delta planes line up at their gates while on the tarmac of Salt Lake City International Airport in Utah in this file photo taken September 28, 2013. Shares of Delta Air Lines Inc surged almost 5 percent in morning trading on Tuesday after it gave a healthy outlook for the first quarter despite a harsh winter that was expected to hurt airlines. REUTERS/Lucas Jackson/Files (UNITED STATES - Tags: TRANSPORT BUSINESS) less 
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Reuters | Photo By LUCAS JACKSON / REUTERS
Tue, Mar 4, 2014 12:45 PM EST