TUS - DEN

$109 Find Cheap Flights from Tucson to Denver

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Tucson to Denver departing on 10/29. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Denver

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Tucson to Denver, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Tucson to Denver, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$208
Typical prices: $322-$149
Frontier
Tue 10/20Thu 10/29
TUS - DEN • Non-stop
Cheapest non-stop
$271
Typical prices: $351-$155
United Airlines
Wed 6/3Tue 6/9
TUS - DEN • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
United's Economy Plus offers extra legroom.
Southwest allows two free checked bags up to 50 pounds.
Expert advice
Expert advice
Expert advice
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Top airlines
Cheapest • from $208 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
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Nonstop flights
You can fly direct with Southwest and United Airlines. Average duration is 1h 59m
Direct flights
Direct flights
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Direct flights
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 47% compared to booking last minute.
Insights
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Insights
When to travel
Cheapest • 25% price drop
Most popular
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We hope you love your trip to Denver!
Flight Deals
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Flight Deals

Cheap Flights from Tucson to Denver (TUS-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Tucson to Denver that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Tucson to Denver

Tue, Oct 20 - Thu, Oct 29
Frontier Logo
3:25 pm - 6:27 pm
TUS
-
DEN
2h 02mnonstop
Frontier Logo
9:12 am - 10:14 am
DEN
-
TUS
2h 02mnonstop
$208Frontier
Tue, Oct 20 - Sun, Oct 25
Frontier Logo
3:25 pm - 6:27 pm
TUS
-
DEN
2h 02mnonstop
Frontier Logo
1:28 pm - 2:30 pm
DEN
-
TUS
2h 02mnonstop
$210Frontier
Thu, Oct 8 - Tue, Oct 13
Frontier Logo
3:25 pm - 6:27 pm
TUS
-
DEN
2h 02mnonstop
Frontier Logo
1:28 pm - 2:30 pm
DEN
-
TUS
2h 02mnonstop
$211Frontier
Thu, Oct 15 - Sun, Oct 18
Frontier Logo
3:25 pm - 6:27 pm
TUS
-
DEN
2h 02mnonstop
Frontier Logo
1:28 pm - 2:30 pm
DEN
-
TUS
2h 02mnonstop
$222Frontier
Tue, Sep 8 - Tue, Sep 15
Delta Logo
7:00 am - 10:58 pm
TUS
-
DEN
14h 58m
1 stop
Delta Logo
12:59 pm - 9:08 pm
DEN
-
TUS
9h 09m
1 stop
$263Delta
Wed, Jun 3 - Tue, Jun 9
United Airlines Logo
5:45 am - 8:38 am
TUS
-
DEN
1h 53mnonstop
United Airlines Logo
7:10 pm - 8:12 pm
DEN
-
TUS
2h 02mnonstop
$271United Airlines
Tue, Jun 2 - Tue, Jun 9
Delta Logo
7:10 am - 2:58 pm
TUS
-
DEN
6h 48m
1 stop
Delta Logo
7:50 pm - 11:12 am
DEN
-
TUS
16h 22m
1 stop
$277Delta
Wed, May 20 - Tue, May 26
United Airlines Logo
5:30 am - 8:40 am
TUS
-
DEN
2h 10mnonstop
United Airlines Logo
7:10 pm - 8:12 pm
DEN
-
TUS
2h 02mnonstop
$279United Airlines
Wed, Jun 3 - Tue, Jun 9
Southwest Logo
6:05 am - 1:00 pm
TUS
-
DEN
5h 55m
1 stop
Southwest Logo
8:15 am - 9:15 am
DEN
-
TUS
2h 00mnonstop
$281Southwest
Thu, Jun 4 - Tue, Jun 9
Delta Logo
4:44 pm - 11:44 pm
TUS
-
DEN
6h 00m
1 stop
Delta Logo
7:50 pm - 11:12 am
DEN
-
TUS
16h 22m
1 stop
$287Delta
Booking Insights

KAYAK's insights & trends for Tucson to Denver flights

Get data-powered insights and trends into flights from Tucson to Denver to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Tucson to Denver?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Tucson to Denver departing in October.

What’s the cheapest day of the week to fly from Tucson to Denver?

The average price of all round-trip flights from Tucson to Denver clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Denver on a Thursday and more expensive on a Saturday. On your return trip to Tucson, you should consider flying back on a Wednesday, and avoid Saturdays for better deals.

What is the cheapest month to fly from Tucson to Denver?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Tucson to Denver, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Tucson to Denver is February, where tickets cost $204 (return) on average. On the other hand, the most expensive months are January and May, where the average cost of round-trip tickets is $331 and $303 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Tucson to Denver, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Tucson to Denver, you should book around 3 weeks before departure, which saves you about 47% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Expert advice

Expert advice for your flight from Tucson to Denver

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Blane Bachelor

Blane Bachelor

Expert on Southwest

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Good to know

Low seasonJanuary
Cheapest flight$109
Best time to beat the crowds but there is an average 22% increase in price.
Most popular time to fly with an average 7% increase in price.
Flight from Tucson to Denver

When to book flights from Tucson to Denver

Are your dates flexible? Find out the best times to travel from Tucson to Denver based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Tucson to Denver

  • What types of flights are offered from TUS to DEN?

    Flights from TUS to DEN include direct and indirect with often 1-stop and 2-stop flights. The layover flights are usually operated by Delta, American Airlines, and United Airlines. The common layover cities include Phoenix, Salt Lake City, Los Angeles, Dallas, Houston, and Chicago.

  • What services and amenities are offered to disabled passengers at TUS?

    There are reserved accessibility parking spaces, free access to Aira, visual paging display monitors, modified elevator facilities for the blind and handicapped, wheelchair service upon request, and fitted restroom facilities for travelers using wheelchairs.

  • What other cities are served by DEN?

    There are plenty of vacation spots you can visit from DEN on nonstop flights. Consider heading to Santa Barbara for wine tasting, Miami for art lovers, Anchorage for the wilderness, Calgary for skiing, Puerto Vallarta for Yogis or Grand Cayman for scuba diving and many more.

  • Does DEN have a Lost and Found Service?

    DEN has a Lost and Found office located at the Jeppesen Terminal, East Level 1 where lost found items collected around the airport and the security checks are taken. They operate from 8 am to 7:30 pm on weekdays and 8 am to 6 pm on weekends. If you’ve lost an item, you can file a claim online at no extra charge.

  • What is the cheapest flight from Tucson to Denver?

    In the last 3 days, the lowest price for a flight from Tucson to Denver was $109 for a one-way ticket and $208 for a round-trip.

  • Do I need a passport to fly between Tucson and Denver?

    No, a passport isn't needed to fly from Tucson to Denver. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Tucson to Denver?

    On your way to Denver, you’ll fly out from Tucson. You’ll be landing at Denver Intl.

  • Which airlines offer Wi-Fi service onboard planes from Tucson to Denver?

    Delta, American Airlines, JetBlue, and Alaska Airlines offer inflight Wi-Fi service on the Tucson to Denver flight route.

  • Which aircraft models fly most regularly from Tucson to Denver?

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Tucson to Denver flight route.

  • Which airline alliances offer flights from Tucson to Denver?

    Star Alliance is the only airline alliance operating flights between Tucson and Denver.

  • On which days can I fly direct from Tucson to Denver?

    There are nonstop flights from Tucson to Denver on a daily basis.

  • Which is the best airline for flights from Tucson to Denver, Southwest or United Airlines?

    The two airlines most popular with KAYAK users for flights from Tucson to Denver are Southwest and United Airlines. With an average price for the route of $309 and an overall rating of 7.9, Southwest is the most popular choice. United Airlines is also a great choice for the route, with an average price of $311 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Tucson to Denver?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Tucson to Denver.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Tucson to Denver?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Tucson is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Tucson to Denver?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Denver with an airline and back to Tucson with another airline. Booking your flights between Tucson and DEN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Tucson to Denver?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Denver from Tucson up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Tucson to Denver

  • Looking for a cheap flight? 25% of our users found flights on this route for $216 or less one-way and $403 or less round-trip.
  • Animal relief areas at Tucson International Airport (TUS) are located on the lower level to the east and west of the Baggage Claim area. You will be provided with disposable plastic bags and containers to ensure cleanliness is maintained.
  • Both TUS and Denver International Airport (DEN) provide Lactation Suites for nursing mothers looking for privacy while breastfeeding or pumping. The rooms are available 24/7 and are equipped with comfortable seating, power outlets, and sinks. The nursing rooms at TUS are situated in each of the concourses of the terminals, while those at DEN are located near the women’s restrooms at the center of A Gates, B Gates, and C Gates and there’s one inside the women’s restroom at Jeppesen Terminal, level 5.
  • Both TUS & DEN have Military Lounges serving the military members both active and retired as well as their families. Amenities offered include a relaxing comfy lounge, Wi-Fi, gaming, snacks, drinks and much more. The Military Lounge at TUS is located at the main terminal, lower level near Baggage Carousel 4, whereas the USO Lounge at DEN is located on Concourse A, Level 4 center court.
  • If you wish to meditate or pray upon arrival at DEN, you can do so at the religious facilities located at Jeppesen Terminal, Level 6 East in the airport. There is an Islamic Masjid and an Interfaith Chapel and Prayer Hall which are open every day of the week. For the Catholics, a mass is held every Sunday at 1 pm with additional masses held on special occasions.
  • If you’re looking to rent a car at DEN, there are more than 10 rental car agencies to choose from. Simply board one of the shuttles at Island 4, Jeppesen Terminal Level 5 which will take you to the car rental service location and you’ll be assisted.

Prefer to fly direct from Tucson to Denver?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Tucson to Denver Intl.
Find which airlines fly direct from Tucson Airport to Denver Intl Airport, which days they fly and book direct flights.

Direct departures

Tucson to Denver Intl

Monday

Southwest,United Airlines

Southwest,United Airlines

Tuesday

Southwest,United Airlines

Southwest,United Airlines

Wednesday

Southwest,United Airlines

Southwest,United Airlines

Thursday

Southwest,United Airlines

Southwest,United Airlines

Friday

Southwest,United Airlines

Southwest,United Airlines

Saturday

Southwest,United Airlines

Southwest,United Airlines

Sunday

Southwest,United Airlines

Southwest,United Airlines

See more direct flights

Direct returns

Denver Intl to Tucson

Monday

Southwest,United Airlines

Southwest,United Airlines

Tuesday

Southwest,United Airlines

Southwest,United Airlines

Wednesday

Southwest,United Airlines

Southwest,United Airlines

Thursday

Southwest,United Airlines

Southwest,United Airlines

Friday

Southwest,United Airlines

Southwest,United Airlines

Saturday

Southwest,United Airlines

Southwest,United Airlines

Sunday

Southwest,United Airlines

Southwest,United Airlines

See more direct flights

Reviews of the top 3 airlines serving from Tucson to Denver

 
See real verified KAYAK customer reviews for airlines flying from Tucson to Denver. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Tucson to Denver? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
SouthwestOverall score based on 4310 reviews
8.0Comfort
7.5Entertainment
7.0Food
8.6Crew
8.1Boarding
Airline reviews

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

2.0 MediocreAnonymous, May 2026
SEA - SMF
Read more Southwest reviews

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

We waited in the airplane for over 45 min for a southwest employee to make the flight. This cause over half the plane to miss their connecting flight in Denver. When we confronted the desk upon arrival, they told us the only flight they had was the next day leaving at 8:50 pm!!! Or they offered to get us to Burbank or LA, but after that we were on our own to get back to Santa Barbara. I paid for a flight from sba to bna bna to sba. My re entry into mom mode has been 💯 rough because of southwest mistake with my flight. And now I’m leaving to Reno tomorrow for a vballl tournament and just discovered that my leg in Vegas has me and my 3 kids on a stand by flight even though I had booked these ticket last year November!! Do better southwest!

For the first time in a long time, the Wi-Fi actually worked the entire flight! The flight crew was amazing as usual.

Great flight. I didn't get a drink because I was asleep whole on the flight.

It was good from LAX to Phoenix, But the connection in Phoenix to Tulsa was not that great. The staff on both flights were great. The choice of free entertainment was ok nothing to brag about. The 45 min delay because of some electrical issue wasn't great from Phoenix to Tulsa. We sat there with hardly any air, The seat I had was between windows so the side of the plane pushed in on you. My being a bigger man it then made the seating area uncomfortable. The seats on the plane had no power to connect to recharge your phone or anything. I would recommend that they should look into a slot or clamp to hold your phone to enjoy while watching the entertainment choices hands-free. Also make it possible to raise the inner seat by the window be able to raise the arm rest up to make more room for larger people to set more comfortably. I would also say other then that stop price gouging the airfare or nickel and diming everything. Not fair for people having to fly for emergencies and be paying for higher prices due to the season or holidays. Your making your money either way and the cost of flying is still going to be the same regardless if there's 100 people or 200 people.

Mediocre. Boarding is now unpleasant. The employees, once friendly and nice, are now regularly speaking sternly to passengers, badgering them to do things right so they can take off on time and gate check bags because they don't have enough overhead bin space. The pretzel snack was crushed flat and broken into even smaller pieces, which happens frequently lately. Drink service was suspended before they reached my row.

I appreciate the staff who allowed me to board though I arrived a little late! Regarding the assigned seating, I had booked my flight before this change and wasn't aware of the change at the time, and so I didn't select a seat at booking as I didn't realize it was relevant. Better communication about the change would have been helpful for preparing.

WIFI was great. My selection for seating is an aisle, but during my trip, I never had an aisle seat. If we can get that corrected, I will be thrilled.

All good except once again bags took an hour at Midway Airport Happens all the time. Ridiculous

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

The entertainment options on the seat back video boards were nice.

The boarding process was straightforward. One pertinent observation regarding all boarding procedures is that if an individual requires assistance or possesses a special status and is part of preboarding, it is advisable to limit the number of passengers who can preboard with them, rather than the entire, sometimes large, companion groups. The seats are uncomfortable, and the entertainment options are significantly inferior compared to other airlines. During the snack service, I requested an additional bag of snacks, but my request was denied. Initially, the flight attendant agreed to my request.becoming a strange accurate moment. The flight duration was four hours.

I had a cancelled flight because of technical issues going to my destination, and a delayed flight coming home. All told it wasn’t a total bust.

During landing. 2 crew members passed 3 times by my lane and didn't notice that people in front of us had their site to the furthermore reclined... That was uncomfortable and could have been dangerous.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

It’s always a great time flying with united airlines.

We got delayed three hours and nobody thought to have the bathroom fixed while we were sitting waiting to board? took a full hour to have maintenance come and check it off. Had to shut the bathroom down twice so that the pilots could go to the bathroom. Everyone missed their connections.

Frontier scheduled a 40 minute connection in DEN. What they failed to mention was that they “close the doors” 20 mins prior to departure, which means you only have 20 mins. Not enough time. Possibly against DOT regulations. Filing complaint.

The bag check, flight check-in, and onboard experience convinced my wife and me that we will actively go out of our way to avoid flying Frontier Airlines in the future. At bag check, we were informed that check-in could only be completed via the Frontier mobile app. Unfortunately, the app was extremely frustrating—sending us through repetitive, confusing loops that repeatedly forced us to decline add-on services with nearly every click. While most airline apps upsell, this one felt intentionally exhausting. As the process dragged on, we became genuinely concerned that my phone battery would die before check-in could be completed. We approached the bag check staff—who were standing together talking—and explained both our frustration and our predicament. They laughed. Later, my wife described the interaction as “gaslighting,” which felt accurate. We were then informed it would cost $25 per person simply to have our boarding passes printed. From that point forward, the tone of the experience was consistently hostile. The bag check employees were condescending and combative, behaving more like bullies than customer service staff. Unfortunately, that same attitude continued onboard. One flight attendant argued with me when I attempted to stow my backpack in the overhead bin. I explained that we had each paid $75 to check our bags specifically so we would not need to use carry-on space and could have adequate legroom. She demanded to see my ticket, pointed out that it said “no carry-on”—which I acknowledged—and I reiterated that this was precisely why we paid to check our bags. Her response was, “I don’t make the rules.” She then walked away, but not before asking if I “truly wanted to fly back to Chicago today?”—an unnecessary and unmistakable threat. It is also worth noting that despite booking our tickets together in the same transaction, we were not seated together. Upon our return to Chicago—where we could once again sit together—we compared onboard experiences. We both remarked on how unhappy the flight attendants appeared and how each of us was separately asked whether we would like to purchase a beverage. We declined. At no point was water mentioned as an option, leaving us with the clear impression that even water came at a cost—or that complimentary water, if available at all, was deliberately left unmentioned. Overall, the experience was shocking and deeply disappointing, but it was also a profound learning experience—one we will not forget and will not repeat. -Steve

It was an early flight and most people napped/slept and the crew let us which was nice.

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

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

Other airlines flying from Tucson to Denver

Flights from the other most popular airlines that fly from Tucson to Denver according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.