$74 Cheap Frontier Airlines flights Denver (DEN) to Tucson (TUS)

Set the “Price (lowest to highest)” filter on Expedia to find cheap Frontier Airlines return flights from $148 from DEN to TUS. Affordable one-way options from $74 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.

Search for round-trip or one-way flights to Tucson in June or July. You could find an affordable fare with Frontier Airlines during these off-season months.

To find cheap Frontier Airlines fares from Denver Intl. Airport (DEN) to Tucson Intl. Airport (TUS), start searching one to three months before your planned 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 impact the overall cost. Sunday is typically 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.

Fill in your dates, press search and check the “Nonstop” filter on Expedia to browse any direct flights from DEN to TUS with Frontier Airlines or other airlines.

Filter your results by “Morning” and “Early Morning” to browse the earliest departures from DEN to TUS. Setting off 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.

Tucson Intl. Airport (TUS) is the main Tucson hub for Frontier Airlines flights from Denver Intl. Airport (DEN).

With a rewarding loyalty program, Frontier Airlines is a top choice for many passengers departing from DEN to TUS. Plus, as a Frontier Miles and One Key™ member booking through Expedia, you can earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are often free within 24 hours of making your booking, but your airline may add a charge after that time. For more details about altering your reservation, head to your “Trips,” select your flight and click on “Manage Booking.” If you’d like the flexibility to change your plans without extra charges, tick the “Changes included” or “No cancel fee” filter when organizing your next trip.