Alaska Airlines has round-trip flights from Portland (PDX) to Oakland, Sacramento, San Jose, or Fresno (OAK/SMF/SJC/FAT) for $117-$137, NONSTOP. Flights September to November. Departures on Tuesday, Wednesday, and Saturday. Extended Weekends available. Origin/Destination reversible.
Note: Carry-on bag is allowed for free on Alaska Airlines. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.