BOS-SEA

Lower (MR-able) fare recently filed:

Very limited roundtrip dates at $131 (saver - 2.6 cpm) / $211 (main 4.2 cpm)

Example (ex-BOS): https://www.google.com/travel/flight...YRsoszXohhB5y7 (Mar 13)

One way from either origin opens up more opportunities.

Proof you can still get good close-in fares, even without sale promo...you just have to look for them.