Southwest and American Airlines have round-trip flights from Dallas (DAL/DFW) to New York (LGA) for $138, NONSTOP. $69 each-way. Flights October, December, January, February, March, and April. Mostly midweek. Origin/Destination reversible. No Holidays. Expect prices to fluctuate by about +/- $10.
Note: American Airlines seems to have more dates available than Southwest, but the fare is a fee encumbered “Basic Economy” fare.
Note: You can save up to an additional $125 if you book your Flight+Hotel together as a package on Southwest Vacations before 10/05/18.
Read More Nonstop Flights: Dallas to/from New York $138-$147 r/t – Southwest / American