$99 Cheap Delta flights Tucson (TUS) to Denver (DEN)

Finding cheap one-way Delta Air Lines flights from TUS to DEN from $99 on Expedia is simple — just filter by “Price (lowest to highest).” Alternatively, check out our affordable round-trip fares from $191 for your next exciting vacation.**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.

Delta Air Lines flights to Denver are often more affordable in the off-peak months of January and November. Whether you’re searching for a return or one-way ticket, you could find a better deal then.

To find cheap Delta Air Lines fares from Tucson Intl. Airport (TUS) to Denver Intl. Airport (DEN), 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 what you pay. Sunday tends to be the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your flight 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.

Use the “Nonstop” filter when browsing for direct Delta Air Lines flights from TUS to DEN. It’s also a good way to compare other airlines servicing the same direct route.

Sort your results by “Early Morning” and “Morning” to find the earliest departures from TUS to DEN. Setting off early means you’re 20% 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 Tucson Intl. Airport (TUS) to Denver land at Denver Intl. Airport (DEN). This is the main entry point to this city.

Jetting off from TUS to DEN with Delta Air Lines means enjoying a variety of perks, including a rewarding loyalty program and an excellent in-flight experience. Plus, when you book through Expedia, One Key™ members can earn OneKeyCash™* to spend 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 generally free within 24 hours of making your booking, but your airline may charge a fee after that. For further details about altering your flights, go to your “Trips,” select your flight and click on “Manage Booking.” If you’d like the freedom to make changes without additional charges, check the “Changes included” or “No cancel fee” filter when planning your trip.