US/UA/DL: PHL-SAN/PDX starting at $224 ai
OK, this is a little high for "mileage run" transcons, but it's hard to beat these days. Especially since, if you're interested, you can fly US NONSTOPS from Philly (almost nobody ever flies transcon nonstop from Philly at these prices). Availability starts in late August, picks up in September and is good through fall. I don't see PHL-PDX for less than $240 ai.
I'm sitting on a bunch of "free" and $99 companion tickets through various credit card sign-ups, so I bit.