Southwest has round-trip flights from Houston (HOU) to New York/Newark (EWR) for $148, with a connection. $74 each-way. Flights from late-September to October. Mostly on Tuesdays, Wednesdays, and Saturdays. Origin/Destination reversible.
Note: Southwest is ending their flights into Newark after October.
Note: Southwest doesn’t charge a change-fee, so if you already booked this flight, but paid more, you should be able to re-book at the lower price and get the difference paid back to you in the form of a travel-voucher.
Note: You can save an additional $150 if you book your Flight+Hotel together as a package on Southwest Vacations and use the USA100 coupon-code.