Share Share Sign Up for Our Newsletter Get the Daily Investor Newsletter Please enter a valid e-mail. Thank you for signing up! Sign Up Southwest Airlines's Fourth-Quarter Earnings Fly 13% by The Associated Press Jan 20th 2011 6:40PMUpdated Jan 20th 2011 9:32PM Copyright 2011 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Share Learn about investing from the comfort of your own home. Portfolio Basics Take the first steps to building your portfolio. View Course » Investment Strategies Learn the strategies you need to build a winning portfolio View Course » View All Courses