Originally Posted by jpdx
I'm not sure there is a "better" time to travel in NW C, as fares aren't seasonal. The standard C fare for MSP-SEL is $4,960+, and there is a CXSEL fare for $4,692. There may be consolidator fares, and another cheap option would be to buy two tickets, and connect somewhere on the West Coast - CXSEL fares from PDX are only $3,284.
I think I am going to do the LAX-SEL, and use 30,000 miles to upgrade to WBC.