Shares of some top airlines companies are down at 1 p.m.:

Delta Air fell $.37 or .9 percent, to $40.15.

JetBlue Airways Corp. fell $.09 or .7 percent, to $12.52.

Southwest Airlines Co. fell $.23 or .7 percent, to $31.91.

United Continental Holdings Inc. fell $.03 or .1 percent, to $48.48.