$154 Cheap Delta flights San Antonio (SAT) to Baltimore (BWI)

Landing cheap one-way Delta Air Lines flights from SAT to BWI from $154 on Expedia couldn't be simpler — just filter by "Price (lowest to highest)." Or check out our budget-friendly return fares from $307 for your next exciting adventure.**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.

Search for cheap Delta Air Lines flights from San Antonio Intl. Airport (SAT) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI) one to three months ahead of your departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare class and journey, the best day of the week to book a domestic flight is generally Sunday and the most expensive tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**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.

Browse Delta Air Lines's earliest flights from SAT to BWI by checking the "Early Morning" and "Morning" filters. Not only will you arrive sooner, early departures also experience 20% fewer cancellations.**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.

Jetting off from SAT to BWI with Delta Air Lines comes with a host of perks, such as a rewarding loyalty program and an excellent in-flight experience. Plus, when you book through Expedia, One Key™ members can earn OneKeyCash™* to redeem on select future travel purchases. That's in addition to the Delta SkyMiles points you can earn with Delta Air Lines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.