Another vote for google flights. You can fly US from OAK-PHX-LAS-PHX-OAK on the 28th for $341 which should give you just enough miles. Also OAK-PHX-SAN-PHX-OAK on US for $348 on the 31st. Also, I see OAK-PHX-FLG-PHX-OAK for $316 on the 31st.
Last edited by xliioper; Dec 23, 2012 at 9:15 pm