Join Date: May 2003
Location: Philadelphia, LAX, Paris
Programs: UA 1K/2MM, SPG/Marriott Lifetime Titanium, Lifetime HHonors Diamond, Hyatt Globalist, AA Exec Plat
Posts: 3,749
As a rule, ALWAYS apply your SWU to the longest portion of your trip, as mentioned by several people on this thread. Once that clear, then try to get the other segments upgraded. Just common sense.