American Airlines has round-trip flights from Dallas (DFW) to Boston (BOS) for $137, NONSTOP. Flights December to April. Departures on Monday, Tuesday, Wednesday, Thursday, and Saturday. Extended weekends available.
A Carry-on bag and also a personal item is allowed for free on American. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.
Read More Nonstop Flights: Dallas to Boston $137 r/t [December-April] – American Airlines