Dan,

To the best of my knowledge, unless you purchase the full fare tickets to begin with, none of the US CARRIERS give refunds these days until the difference is at least either a hundred or a hundred and fifty dollars per ticket. I may be wrong on this and if so, I'd love to hear some informed answers too. <img src="http://www.traveltalkonline.com/forums/images/graemlins/handshake.gif" alt="" /> <img src="http://www.traveltalkonline.com/forums/images/graemlins/handshake.gif" alt="" />