American Airlines has round-trip flights from San Antonio (SAT) to Newark/New York (EWR) for $153 with a connection. Flights in May, September, December, January, and February. Mostly on Tuesdays, Wednesdays, and Saturdays. Origin/Destination reversible. No Holidays.
Note: Carry-on bag is allowed for free on American Airlines. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.