$81 Cheap Delta flights Boston (BOS) to Baltimore (BWI)

Finding cheap one-way Delta Air Lines flights from BOS to BWI from $81 on Expedia couldn't be easier --- just filter by "Price (lowest to highest)." Or check out our affordable return fares from $161 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.

Begin your search one to three months before your departure to get cheaper fares on Delta Air Lines flights from Logan Intl. Airport (BOS) 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 spot on, 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.

The earliest flight from BOS to BWI with Delta Air Lines departs at 8:19AM UTC-5. You'll land at 10:04AM UTC-5. The final Delta Air Lines flight of the day takes off at 5:28PM UTC-5 and arrives at 7:18PM UTC-5. With 20% fewer cancellations for departures before midday, starting your travel day early is usually the wisest option.**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.

Taking off from BOS to BWI with Delta Air Lines comes with a host of perks, such as an excellent in-flight experience and a rewarding loyalty program. Plus, when you book through Expedia, One Key™ members can collect OneKeyCash™* to use on select future travel purchases. That's on top of 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.