$109 Cheap United flights Denver (DEN) to Baltimore (BWI)

Make use of the "Price (lowest to highest)" filter on Expedia to search for cheap United Airlines return flights from $217 from DEN to BWI. Affordable one-way options from $109 are also on offer.**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 cheap fares on United Airlines flights from Denver Intl. Airport (DEN) 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 flights.*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 DEN at 9:41AM UTC-7, the earliest United Airlines flight to BWI lands at 3:05PM UTC-5. Flying earlier in the day means you'll be less likely to encounter delays or cancellations.* Not an early riser? The last United Airlines flight from DEN to BWI departs at 6:20PM UTC-7 and touches down at 11:44PM 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.

A rewarding loyalty program and the opportunity to collect points through United Mileage Plus are the start of the reasons to depart from DEN to BWI with United Airlines. Plus, by joining Expedia's free One Key™ program, you can receive OneKeyCash™* in addition to United Airlines's loyalty program earnings. It's yours to spend on future travel plans.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.