$209 Cheap Delta flights Billings (BIL) to Denver (DEN)

Scoring cheap one-way Delta Air Lines flights from BIL to DEN from $209 on Expedia couldn’t be easier — just filter by “Price (lowest to highest).” Alternatively, check out our affordable return fares from $203 for your next break.**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.

Look for return or one-way flights to Denver in January or November. You could find lower fares with Delta Air Lines during these off-season months.

To find cheap Delta Air Lines fares from Logan Intl. Airport (BIL) to Denver Intl. Airport (DEN), start searching one to three months before your planned departure. Securing 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 cost. 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.

Enter your dates, click search and check “Nonstop” on Expedia to find any direct flights from BIL to DEN with Delta Air Lines or other airlines.

To find the earliest departures from BIL to DEN with Delta Air Lines, filter your search by “Morning” and “Early Morning.” Choosing an early flight usually means cancellations are less likely.**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 Logan Intl. Airport (BIL) to Denver land at Denver Intl. Airport (DEN). This is the main entry point to this destination.

Offering a rewarding loyalty program and an excellent in-flight experience, Delta Air Lines is a top choice for many passengers heading from BIL to DEN. Also, if you’re a Delta SkyMiles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can go toward future getaways.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on your ticket type, a fee generally applies if you cancel or change your booking more than 24 hours after it’s confirmed. To find plane tickets with more flexibility, select our “No cancel fee” or “Changes included” filter while searching for flights. For more details on canceling or changing your reservation, go to “Trips,” select your flight and tick “Manage Booking.”