$119 Cheap Delta flights Buffalo (BUF) to Denver (DEN)

Make use of the “Price (lowest to highest)” filter on Expedia to look for cheap Delta Air Lines round-trip flights from $227 from BUF to DEN. Affordable one-way fares from $119 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.

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

Search for affordable Delta Air Lines flights from Buffalo Niagara Intl. Airport (BUF) to Denver Intl. Airport (DEN) one to three months prior to your day of 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 type and itinerary, the ideal day to book a domestic flight is usually Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book 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.

Fill in your dates, click search and select the “Nonstop” filter on Expedia to browse any direct flights from BUF to DEN with Delta Air Lines or another airline.

To find the earliest departures from BUF to DEN with Delta Air Lines, sort your results by “Morning” and “Early Morning.” Choosing an early flight usually 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.

Denver Intl. Airport (DEN) is the primary Denver hub for Delta Air Lines flights from Buffalo Niagara Intl. Airport (BUF).

Heading from BUF to DEN with Delta Air Lines comes with a host of benefits, such as a rewarding loyalty program and an excellent in-flight experience. Plus, when booking through Expedia, One Key™ members can earn OneKeyCash™* to use 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.

Changes are typically free within 24 hours of booking, but your airline may charge a fee after that time. For more details about modifying your reservation, head to your “Trips,” select your flight and click on “Manage Booking.” If you’d like the freedom to change your plans without additional charges, check the “No cancel fee” or “Changes included” filter when planning your next break.