JetBlue, Delta, United, and Alaska Airlines have round-trip flights from New York/Newark (JFK/EWR) to San Francisco or Seattle (SFO, SEA) for $197, NONSTOP. Flights January to March. Departures on Tuesday, Wednesday, and Saturday. Extended weekends available.
JetBlue’s “Basic” fares allow for a carry-on bag and a small personal item (17 x 13 x 8 inches), like a Jansport SuperBreak backpack without a fee. You can avoid seat selection fees by accepting the randomly assigned seat at the gate.