With a HT to twitter follower John (txs for tweet) this one is really nice. Works either way but many more weekend dates open from CLT to SEA rather than other way. You need to route via ATL both ways to get the best CPM. Many open dates in SEPT & OCT. Here are the numbers:
5,362MQMs at 4.9CPM
Bookable on Delta.com
DM yields 12,064 Skymiles per CWSI.net!