American Airlines has round-trip flights from Dallas (DFW) to San Juan, Puerto Rico (SJU) for $215, NONSTOP. Flights in March. Departures on Monday, Tuesday, and Sunday.
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 San Juan, Puerto Rico $215 r/t [March] – American Airlines