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$39+ Cheap flights from Tucson to Denver (TUS - DEN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
TUS — DEN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Tucson to Denver Intl are usually found in April or March, booked 51 days in advance, depart on a Thursday or Friday and return on a Wednesday

Cheap flight deals from Tucson to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Tucson (TUS) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$108
(Frontier)

One-way from

$39
(Frontier)

Popular in

December

Cheapest in

April

Average price

$239

Good round-trip deal

$261 or less

Good one-way deal

$150 or less
From Tucson to Denver Intl
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One-way flight from Tucson to Denver Intl
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Highest demand for flights based on searches. 8% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Tucson to Denver Intl.
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Price to beat on a one-way flight from Tucson to Denver Intl.
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Find flight deals from Tucson to Denver

Cheapest flights from Tucson to Denver
Explore the most affordable flight options available from Tucson to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Gotogate deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/211:35 amTUS - DEN
Nonstop1h 57mFrontier
Sun 10/53:05 pmDEN - TUS
1 stop23h 46mFrontier
Deal found 9/10$110
This Frontier deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/211:35 amTUS - DEN
Nonstop1h 57mFrontier
Mon 10/610:00 amDEN - TUS
1 stop4h 51mFrontier
Deal found 9/9$114
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/154:25 pmTUS - DEN
Nonstop1h 59mUnited Airlines
Sat 10/183:53 pmDEN - TUS
Nonstop2h 15mUnited Airlines
Deal found 9/11$117
This Priceline deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/911:42 amTUS - DEN
Nonstop2h 00mFrontier
Mon 10/137:00 amDEN - TUS
1 stop5h 39mFrontier
Deal found 9/10$125
This Booking.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/911:42 amTUS - DEN
Nonstop2h 00mFrontier
Sun 10/1211:08 amDEN - TUS
1 stop25h 31mFrontier
Deal found 9/10$126
This Frontier deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1611:42 amTUS - DEN
Nonstop2h 00mFrontier
Sun 10/199:58 amDEN - TUS
Nonstop1h 59mFrontier
Deal found 9/10$131
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:00 amTUS - DEN
Nonstop1h 55mUnited Airlines
Wed 10/811:25 amDEN - TUS
Nonstop2h 03mUnited Airlines
Deal found 9/10$133
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/262:41 pmTUS - DEN
1 stop4h 42mFrontier
Mon 9/2910:00 amDEN - TUS
1 stop4h 51mFrontier
Deal found 9/8$143
This Frontier deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/168:46 amTUS - DEN
1 stop11h 09mFrontier
Wed 10/299:05 pmDEN - TUS
1 stop11h 21mFrontier
Deal found 9/8$144
This Booking.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/152:41 pmTUS - DEN
1 stop12h 19mFrontier
Mon 9/227:00 amDEN - TUS
1 stop7h 51mFrontier
Deal found 9/8$145
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/244:25 pmTUS - DEN
Nonstop1h 59mUnited Airlines
Mon 10/277:45 amDEN - TUS
Nonstop2h 14mUnited Airlines
Deal found 9/10$149
This Frontier deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1712:24 pmTUS - DEN
1 stop5h 46mFrontier
Sat 10/259:14 pmDEN - TUS
1 stop11h 37mFrontier
Deal found 9/8$152

Cheapflights Fare Finder

 
Customize your flight search to find flights from Tucson to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Tucson to Denver that are best for you.

Fly from

Tucson

Fly to

Denver

Route

Depart

Return

Price

TucsonDenver

TUS - DEN

TUSDEN

Tucson

Fri 10/3

11:35 am-2:32 pm

Nonstop1h 57m

Denver Intl

Wed 10/8

9:14 pm-7:51 am

1 stop11h 37m

$110

TucsonDenver

TUS - DEN

TUSDEN

Tucson

Sun 10/12

8:46 am-8:55 pm

1 stop11h 09m

Denver Intl

Wed 10/15

9:14 pm-7:51 am

1 stop11h 37m

$145

TucsonDenver

TUS - DEN

TUSDEN

Tucson

Fri 10/24

4:25 pm-7:24 pm

Nonstop1h 59m

Denver Intl

Mon 10/27

7:45 am-8:59 am

Nonstop2h 14m

$149

TucsonDenver

TUS - DEN

TUSDEN

Tucson

Thu 10/2

4:50 pm-10:44 pm

1 stop4h 54m

Denver Intl

Sun 10/5

6:30 am-11:14 am

1 stop5h 44m

$197

TucsonDenver

TUS - DEN

TUSDEN

Tucson

Thu 12/18

12:42 pm-6:31 pm

1 stop5h 49m

Denver Intl

Tue 1/13

6:25 pm-11:13 pm

1 stop4h 48m

$197

TucsonDenver

TUS - DEN

TUSDEN

Tucson

Wed 10/15

4:30 pm-11:50 pm

1 stop6h 20m

Denver Intl

Sat 10/18

5:30 am-10:33 am

1 stop6h 03m

$197

TucsonDenver

TUS - DEN

TUSDEN

Tucson

Tue 10/14

5:55 am-11:47 am

1 stop4h 52m

Denver Intl

Sat 10/18

5:30 am-10:33 am

1 stop6h 03m

$197

TucsonDenver

TUS - DEN

TUSDEN

Tucson

Thu 10/16

4:25 pm-7:24 pm

Nonstop1h 59m

Denver Intl

Sat 10/18

2:00 pm-3:05 pm

Nonstop2h 05m

$203

TucsonDenver

TUS - DEN

TUSDEN

Tucson

Tue 10/14

1:30 pm-4:29 pm

Nonstop1h 59m

Denver Intl

Tue 10/21

2:00 pm-3:05 pm

Nonstop2h 05m

$203

TucsonDenver

TUS - DEN

TUSDEN

Tucson

Fri 10/17

4:25 pm-7:24 pm

Nonstop1h 59m

Denver Intl

Sat 10/18

3:53 pm-5:08 pm

Nonstop2h 15m

$203

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 23 results
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2
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Best time to book a flight from Tucson to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Tucson with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Tucson to Denver

How far ahead should I book a flight from Tucson to Denver?

Use this chart to determine the optimal time to book a round-trip flight from Tucson to Denver. Price data was last updated on August 29, 2025.

Booking 51 days in advance of your planned departure date is, on average, the best time to get cheap flights from Tucson to Denver. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Tucson to Denver?

Currently, October is the cheapest month in which you can book a flight from Tucson to Denver (average of $197). Flying from Tucson to Denver in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from TUS to DEN?

Find hourly flight availability from Tucson to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

A simple way to save on the total cost of your ticket is to fly from Tucson to Denver in the evening. If you’re flexible enough to do this you can expect to save up to 24% on your trip compared to booking a flight at noon.

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated September 11, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Tucson to Denver by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Related info for your journey

Find useful and relevant information for your journey from Tucson to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Tucson to Denver?

    If you book a flight from Tucson to Denver, you will be flying from Tucson to Denver Intl. Flights to Denver Intl (DEN) from Tucson (TUS) take 1h 55m for a nonstop flight. There are 8 flights from Tucson to Denver per day from 5 airlines.

  • How popular is this Tucson to Denver flight route?

    Flights from Tucson to Denver Intl have been viewed 58 times in the past calendar month.

  • How long is the flight from Tucson to Denver?

    Airlines like Frontier, United Airlines, and Delta fly from Tucson to Denver in about 1h 57m. The time it takes to get you to your destination can typically vary by up to 2h 57m. The distance from Tucson to Denver is about 639 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Tucson to Denver round-trip?

    According to our current data, Frontier ($37), Delta ($98), and United Airlines ($175) offers the cheapest pricing from Tucson to Denver. Frontier is currently priced 86% below the average price you’ll pay for this route.

  • What are the most reliable airlines from Tucson to Denver?

    Consider SkyWest Airlines (76%), Southwest (74%) or United Airlines (74%) when booking your flight. These represent the most reliable airlines when flying from Tucson to Denver.

  • What are the cheapest flights from Tucson to Denver?

    While on average a flight from Tucson to Denver is generally $745, our data shows the cheapest flight currently is $88. When looking at the most popular route, (Tucson - Denver Intl), you can expect to pay $117 for that flight.

  • Can I find deals for flights from Tucson to Denver that include hotel bookings?

    Yes. In addition to deals on Tucson to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Tucson to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Tucson to Denver.

  • Can I find deals for business class flights from Tucson to Denver?

    Yes. Cheapflights offers flight deals from Tucson to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Tucson to Denver?

    Currently, October is the cheapest month in which you can book a flight from Tucson to Denver (average of $197). Flying from Tucson to Denver in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Westminster
Black Hawk
Golden
Winter Park
Broomfield
Greeley
Lone Tree
Lakewood
Cripple Creek
Thornton
Silverthorne
Frisco
Manitou Springs
Fort Morgan
Glendale
Wheat Ridge
Brighton
Longmont
Idaho Springs
Parker

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Tucson to Denver

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Tucson to Denver

Discover the top 5 airlines that operate flights from Tucson to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$37Average$127FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$266FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$175Average$296FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$190Average$291FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$191Average$363FlexibilityNo cancel feeOn-time71%

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