JetBlue has round-trip flights from Atlanta (ATL) to Boston (BOS) for $117, NONSTOP. Flights January to April. Departures on Monday, Tuesday, Wednesday, Thursday, 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.