Sample dates:
EWR-LAS - December 1
LAS-EWR - December 8
Books into United P class, which earns 150% of the miles flown (so approximately 6600-6700 miles) on many programs
other than United MileagePlus. Perhaps not as lucrative, mileage-wise, as the recent Oregon fare; but (1) it's NONSTOP, and (2) Las Vegas is presumably of more interest to many people (as a destination) than Eugene, Oregon.