Airlines companies shares mixed at 10 a.m.

Shares of some top airlines companies are mixed at 10 a.m.:

Delta Air fell $.59 or 1.3 percent, to $45.33.

JetBlue Airways Corp. rose $.01 or .1 percent, to $17.36.

Southwest Airlines Co. fell $.26 or .6 percent, to $43.82.

United Continental Holdings Inc. fell $.15 or .2 percent, to $67.27.