Independence Air has launched two sales. A two-for-onesale offers 50 percent off each ticket when you fly with a friend; you must travel by Nov. 19. The "We-Told-You-So" systemwide sale has prices starting at $29 each way (good from Dulles to Pittsburgh or Charleston, W.Va.) plus taxes; travel by Jan. 31. Sales are not combinable. Book no later than Sept. 27; blackout dates may apply.
Info: 800-FLY-FLYI, www.flyi.com.
