HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Denver

$35+ Cheap flights from Phoenix to Denver (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 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — DEN
Jan 25 — Feb 11
Sun 1/25
Sun 2/1
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Phoenix to Denver with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Phoenix to Denver Intl are usually found in February or January, booked 56 days in advance, depart on a Thursday or Friday and return on a Wednesday

Cheap flight deals from Phoenix to Denver

Cheapest flights from Phoenix to Denver
Explore the most affordable flight options available from Phoenix to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 26, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/23. 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.
Wed 12/319:31 amPHX - DEN
Nonstop1h 55mFrontier
Wed 1/285:11 pmDEN - PHX
Nonstop2h 08mFrontier
Deal found 12/23$67
This Kiwi.com deal was found by Cheapflights users on 12/25. 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.
Wed 12/317:00 amPHX - DEN
Nonstop1h 55mMultiple Airlines
Fri 1/25:40 pmDEN - PHX
1 stop22h 20mMultiple Airlines
Deal found 12/25$147
This Frontier deal was found by Cheapflights users on 12/25. 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.
Wed 12/317:00 amPHX - DEN
Nonstop1h 55mFrontier
Sun 1/47:23 pmDEN - PHX
Nonstop2h 03mFrontier
Deal found 12/25$149
This Super.com deal was found by Cheapflights users on 12/23. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:00 amPHX - DEN
Nonstop1h 55mFrontier
Wed 12/3110:29 pmDEN - PHX
Nonstop2h 00mFrontier
Deal found 12/23$176
This Super.com deal was found by Cheapflights users on 12/25. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:00 amPHX - DEN
Nonstop1h 55mFrontier
Sat 1/310:00 amDEN - PHX
1 stop6h 45mFrontier
Deal found 12/25$184
This Cheapflightsfares deal was found by Cheapflights users on 12/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:26 pmPHX - DEN
1 stop5h 32mFrontier
Fri 1/210:37 pmDEN - PHX
1 stop11h 03mFrontier
Deal found 12/23$187
This Kiwi.com deal was found by Cheapflights users on 12/24. 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.
Wed 12/2410:26 pmPHX - DEN
1 stop5h 32mFrontier
Wed 1/285:11 pmDEN - PHX
Nonstop2h 08mFrontier
Deal found 12/24$188

Find flight deals from Phoenix to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Phoenix (PH1) 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 December 26, 2025.

Round-trip from

$66
(Frontier)

One-way from

$35
(Trip.com)

Popular in

June

Cheapest in

February

Average price

$182
From Phoenix to Denver Intl
Search Deals
One-way flight from Phoenix to Denver Intl
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Phoenix 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 December 26, 2025.
Use the filters below to find and compare flights from Phoenix to Denver that are best for you.

Fly from

Phoenix

Fly to

Denver

Route

Depart

Return

Price

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Tue 1/20

8:30 am-10:27 am

Nonstop1h 57m

Denver Intl

Thu 1/22

4:14 pm-11:09 pm

1 stop6h 55m

$109

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Sat 1/17

12:35 pm-8:53 pm

1 stop8h 18m

Denver Intl

Tue 1/20

5:11 pm-7:19 pm

Nonstop2h 08m

$110

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Tue 1/6

7:39 pm-9:35 pm

Nonstop1h 56m

Denver Intl

Tue 1/13

10:41 am-12:56 pm

Nonstop2h 15m

$127

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Sat 2/7

3:45 pm-11:58 pm

1 stop8h 13m

Denver Intl

Sat 2/14

6:45 pm-11:42 pm

1 stop4h 57m

$136

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Sat 1/17

3:45 pm-11:58 pm

1 stop8h 13m

Denver Intl

Tue 1/20

12:34 pm-7:25 pm

1 stop6h 51m

$136

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Sat 1/17

6:45 am-8:41 am

Nonstop1h 56m

Denver Intl

Tue 1/20

7:50 pm-9:54 pm

Nonstop2h 04m

$137

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Tue 1/20

3:45 pm-11:58 pm

1 stop8h 13m

Denver Intl

Fri 1/23

12:34 pm-7:25 pm

1 stop6h 51m

$156

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Fri 1/23

8:24 am-6:41 pm

1 stop10h 17m

Denver Intl

Wed 1/28

12:34 pm-7:25 pm

1 stop6h 51m

$156

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Sat 2/28

12:28 pm-5:48 pm

1 stop5h 20m

$68

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Wed 2/25

12:28 pm-5:48 pm

1 stop5h 20m

$68

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/25

Showing 1-10 of 18 results
1
2

Best time to book a flight from Phoenix to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Phoenix 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 Phoenix to Denver

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

Use this chart to determine the optimal time to book a round-trip flight from Phoenix to Denver. Price data was last updated on December 19, 2025.

The price you pay for your flight from Phoenix to Denver may vary depending on when you book. For the best chance of a lower fare, look to book 56 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, February is the cheapest month in which you can book a flight from Phoenix to Denver (average of $53). Flying from Phoenix to Denver in July is currently the most expensive (average of $102). 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 PHX to DEN?

Find hourly flight availability from Phoenix 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 December 26, 2025.

It’s optimal to fly from Phoenix to Denver in the evening. By choosing this option you can save up to 50% on the cost of your flight, compared to a flight at noon.

What is the cheapest day to fly from Phoenix to Denver?

Use this chart to determine the cheapest time to fly round-trip from Phoenix to Denver. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Phoenix to Denver flight should consider departing on Wednesday mornings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Phoenix to Denver

Explore weekly flight availability from Phoenix to Denver. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 26, 2025.

The most flights from PH1 to DEN are scheduled on a Thursday (41 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 on average).

How often are flights from Phoenix to Denver delayed?

About 16% of weekly flights between Phoenix and Denver have experienced delays in the past year, with the average delay time being 125 minutes.

What is the most punctual flight time for Phoenix to Denver flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Wednesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Phoenix to Denver flights?

Over the last year, Frontier have had the lowest number of delays on this route, with just 12% of flights being delayed.

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 December 26, 2025.
Read through reviews of airlines operating flights from Phoenix to Denver, such as Southwest, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,258 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,258 reviews
Southwest
8.0
Very good
4,258 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,115 reviews
Southwest
8.0
Very good
4,258 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,064 reviews
Southwest
8.0
Very good
4,258 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.8
Fair
3,070 reviews
Southwest
8.0
Very good
4,258 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

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

  • What airport do you fly into for flights to Denver from Phoenix?

    Located just 18.5 mi from the city center, Denver Intl is the airport most travelers will use when flying to Denver from Phoenix. Booking flights from Phoenix to Denver Intl (DEN) should be relatively easy as there are 24 daily inbound flights from Phoenix from 4 different airlines.

  • How long is the flight from Phoenix to Denver?

    Frontier and Alaska Airlines can get you from Phoenix to Denver in just under 1h 57m. Your travel time can differ by up to 6h 16m. There are 601 mi between Phoenix and Denver. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Flying on Frontier is currently your cheapest option to Denver, with prices starting at $61. Additional round-trip tickets that might be worth considering are offered by United Airlines and American Airlines, with the lowest prices starting at $132 and $137, respectively. Frontier is priced at 63% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Phoenix to Denver one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $33. Users have also found prices from $68 and $75 on American Airlines and United Airlines, respectively.

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

    The top 3 most reliable airlines when flying from Phoenix to Denver are Lufthansa (89%), United Airlines (84%) and Air Canada (84%).

  • What are the cheapest flights from Phoenix to Denver?

    The cheapest flight price from Phoenix to Denver is $61. On average you can expect to pay $872. The most popular route, (Phoenix Sky Harbor Intl - Denver Intl), can usually be booked for $97.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Phoenix 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 Phoenix to Denver?

    Currently, February is the cheapest month in which you can book a flight from Phoenix to Denver (average of $53). Flying from Phoenix to Denver in July is currently the most expensive (average of $102). 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
Thornton
Black Hawk
Broomfield
Westminster
Winter Park
Golden
Greeley
Lone Tree
Lakewood
Wheat Ridge
Cripple Creek
Silverthorne
Central City
Frisco
Manitou Springs
Fort Morgan
Brighton
Longmont
Idaho Springs
Evergreen

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Phoenix to Denver

See prices for flight routes from nearby airports that may be better suited for you.
Sky Harbor Intl to Denver flights
Las Vegas to Denver flights
Tucson to Denver flights
Sky Harbor Intl to Colorado Springs flights
Sky Harbor Intl to Aspen flights
Sky Harbor Intl to Vail flights
Las Vegas to Colorado Springs flights
Sky Harbor Intl to Grand Junction flights
Sky Harbor Intl to Durango flights
Tucson to Colorado Springs flights
Tucson to Montrose flights
Las Vegas to Aspen flights
Sky Harbor Intl to Hayden flights
Prescott to Denver flights
Sky Harbor Intl to Montrose flights
Sky Harbor Intl to Gunnison flights
Tucson to Durango flights
Flagstaff to Denver flights
Las Vegas to Grand Junction flights
Las Vegas to Durango flights
Sky Harbor Intl to Cortez flights
Las Vegas to Gunnison flights
Yuma to Denver flights
Las Vegas to Montrose flights

Top 4 airlines flying from Phoenix to Denver

Discover the top 4 airlines that operate flights from Phoenix 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 December 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$65Average$147FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$137Average$220FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$138Average$347FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$153Average$245FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.