http://www.flyertalk.com/forum/mileage-run-deals/1449258-ua-iad-iah-sfo-bur-sfo-ewr-iad-last-3-tuesdays-apr-266-6890-mi-038-cpm.htmlWorked for me on united.comFirst thing to do is get the dates set.You can reference with ITA matrix to find the exact dates.What I did (well, would do if booking), would enter this into United's multi-city search:IAD-EWREWR-BUR -BUR-EWR - all 3 of those on 5/29/2013then EWR-DCA on 5/30/2013. The resut will have "nonstop starting at $268...