$150 Cheap Delta flights Baltimore (BWI) to Billings (BIL)

You can discover affordable return Delta Air Lines flights from $299 from BWI to BIL by filtering your results from “Price (lowest to highest)” on Expedia. Or look for bargains from $150 for a one-way journey.**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.

January is one of the least expensive months to jet off to Billings with Delta Air Lines. You could also find fantastic deals on one-way and round-trip fares in November.

For cheap Delta Air Lines fares from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Logan Intl. Airport (BIL), start searching one to three months before your intended departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect the overall price. Sunday is usually the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking on a Sunday.**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.

Click on our “Nonstop” filter when browsing for direct Delta Air Lines flights from BWI to BIL. It’s also an easy way to compare other airlines offering the same nonstop trip.

Sort your results by “Morning” and “Early Morning” to see the earliest departures from BWI to BIL. Leaving early means you’re less likely to experience 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.

Delta Air Lines flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Billings land at Logan Intl. Airport (BIL). This is the main gateway here.

Delta Air Lines makes flying from BWI to BIL more comfortable with an excellent in-flight experience and a rewarding loyalty program. You also have the chance to earn points with Delta SkyMiles. Remember to sign up to our free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

In most cases, you can cancel or reschedule your flight, although additional fees may apply if you booked more than 24 hours ago. Prefer to keep your options open? Use Expedia’s “No cancel fee” or “Changes included” filter to find flights that won’t penalize you if you need to adjust your plans. To make changes, head to “Trips,” select your flight and click on “Manage Booking” for further information.