$83 Cheap Flights from Tucson (TUS) to Denver (DEN)

Popular airlines from Tucson International Airport (TUS) to Denver Intl. Airport (DEN)

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Cheap Flights from Tucson to Denver (TUS-DEN)

Prices were available within the past 7 days and start at $83 for one-way flights and $108 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Southwest Airlines
Delta
United
Alaska Airlines

Find the cheapest month to fly from Tucson (TUS) to Denver (DEN)

April is typically the cheapest month to fly

From $78 - $381 per traveler.

Graph displaying average flight prices per month

Alternative airports near Denver

Prices were available within the past 7 days. Prices and availability are subject to change.

Flights from Tucson (TUS) to Denver (DEN)
Origin airport
Tucson Intl.
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$108
Distance
638 mi
Average flight time
2 hours 53 mins

Tucson to Denver Flights

The cheapest times to fly from Tucson to Denver

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Tucson to Denver are during the month of October. You can find some of the cheapest flights from Tucson to Denver with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Tucson to Denver

Sunday is one of the best days to book for cheap flights from Tucson to Denver: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Tucson to Denver

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Tucson to Denver in 2025. You can also book with separate airlines for your outbound and return journeys, from $83 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Tucson to Denver flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Tucson to Denver airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Tucson Intl. Airport (TUS) to Denver Intl. Airport (DEN) cost?
Snag cheap return fares starting from $118 from Tucson Intl. Airport (TUS) to Denver Intl. Airport (DEN). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Frontier Airlines flight leaving TUS on August 17 2025 and touching down at DEN. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from TUS to DEN?
The cheapest flights from TUS to DEN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Tucson Intl. Airport (TUS) to Denver Intl. Airport (DEN)?
When departing from Tucson Intl. Airport (TUS), you can jump on a nonstop flight to Denver Intl. Airport (DEN) with United Airlines.
What is the cheapest airline that flies from TUS to DEN?
With tickets starting at $74 for a one-way journey from TUS to DEN, Frontier Airlines is currently the cheapest carrier flying this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from TUS on August 17 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Tucson Intl. Airport (TUS) to Denver Intl. Airport (DEN)?
With an average of 8 direct flights that operate from Tucson Intl. Airport (TUS) to Denver Intl. Airport (DEN) every day, you'll be cruising above the clouds before you know it.
What are the most popular departure times for flights from Tucson Intl. Airport (TUS) to Denver Intl. Airport (DEN)?
Flights between TUS and DEN are busiest at 8 AM. If you want a more relaxed experience and possibly cheaper prices, choose a departure that's outside typical rush times.
What day of the week has the most flights from TUS to DEN?
Travel on a Sunday if you're searching for the best selection of flights from Tucson Intl. Airport (TUS) to Denver Intl. Airport (DEN).
What is the earliest flight from Tucson Intl. Airport (TUS) to Denver Intl. Airport (DEN)?
Take the earliest flight at around 5:05AM UTC-7, heading out of Tucson Intl. Airport (TUS). You'll be in the air for about 2h, landing at Denver Intl. Airport (DEN) at approximately 7:05AM UTC-7.
How long does it take to fly from Tucson Intl. Airport (TUS) to Denver Intl. Airport (DEN)?
It takes around 2 hours and 2 minutes to cover the 640 mi from TUS to DEN.
What airline has the least delays from TUS to DEN?
United Airlines has the best track record for on-time direct flights from Tucson Intl. Airport (TUS) to Denver Intl. Airport (DEN), with an on-time score of 82%. Use the Expedia App to view your journey status before you head off and get real-time updates about any trip changes.
What is the best time to fly from Tucson Intl. Airport (TUS) to Denver Intl. Airport (DEN)?
To reach Denver Intl. Airport (DEN) without delays, pick a flight that takes off from Tucson Intl. Airport (TUS) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Denver from Tucson Intl. Airport (TUS)?
Browse your flight options from Tucson Intl. Airport (TUS) to Denver Intl. Airport (DEN). This is the only Denver airport you can touch down at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Tucson Intl. Airport (TUS) to Denver Intl. Airport (DEN) last-minute?
Waiting until just before your departure to book a ticket from TUS to DEN generally means paying more. While you might find some last-minute deals, they aren't always guaranteed. Keep your travel plans flexible for the best chance of getting a bargain.
Is it cheaper to book a TUS to DEN flight and hotel package?
Opting for a TUS to DEN flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Choose from our extensive range of stays and then add car rentals, flights and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Tucson Intl. Airport (TUS) to Denver Intl. Airport (DEN)?
It's generally possible to cancel or reschedule your TUS to DEN flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

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