Southwest has round-trip “Red-Eye” flights from Houston (HOU) to Baltimore (BWI) for $108, NONSTOP. $54 each-way. Flights January to April. Origin/Destination reversible. No Holidays. Mostly weekdays.
Note: “Red-Eye” flights depart at night, and may arrive at the destination after midnight.
Note: United, Spirit, and Frontier may have fee encumbered “Basic Economy” fares available for a bit less. Keep in mind that those “cheaper” fares are often more expensive once you factor in bag fees.
Note: You can save an additional $150 if you book your Flight+Hotel together as a package on Southwest Vacations and use the US150OFF coupon-code. Before you commit, always compare the prices of the individual Flights and Hotel with other hotel booking sites like Tripadvisor or Expedia.
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.