what's the airport hub you are residing at? I'm at SFO so I'll be doing a SFO>JFK, then EWR>SFO on the same day about once a month. It'll net me about 5,136 miles for about $220.99 RT in the middle of the week. Weekend legs for that I think are a little more pricy during the off-peak season being now, so that's a good one at least for those from SFO.