$69 Cheap Southwest Airlines flights Houston (HOU) to Baltimore (BWI)

Grab cheap return Southwest Airlines flights from $137 from HOU to BWI by sorting your results from "Price (lowest to highest)" on Expedia. Or look for bargains from $69 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Start searching one to three months ahead of your travel date to find cheaper fares on Southwest Airlines flights from William P. Hobby Airport (HOU) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing right, and you can enjoy significant savings on domestic trips.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

Departing HOU at 5:55AM UTC-6, the first Southwest Airlines flight to BWI lands at 9:45AM UTC-5. Traveling earlier in the day means you'll be less likely to encounter delays.* Not a morning person? The last Southwest Airlines flight from HOU to BWI departs at 8:25PM UTC-6 and touches down at 12:15AM UTC-5.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.