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Sky Harbor Intl

$52+ Cheap flights from Denver (DEN) to Sky Harbor Intl (PHX)

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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — PHX
Oct 19 — Oct 261
Sun 10/19
Sun 10/26
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to Phoenix Sky Harbor Intl are usually found in September or January, booked 70 days in advance, depart on a Saturday or Wednesday and return on a Thursday

Cheap flight deals from Denver to Sky Harbor Intl

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Sky Harbor Intl (PHX). 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 19, 2025.

Round-trip from

$85
(CheapOair)

One-way from

$52
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$150

Good round-trip deal

$129 or less

Good one-way deal

$87 or less
From Denver Intl to Phoenix Sky Harbor Intl
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One-way flight from Denver Intl to Phoenix Sky Harbor Intl
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Highest demand for flights based on searches. 6% potential increase in price ($11 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 Denver Intl to Phoenix Sky Harbor Intl.
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Price to beat on a one-way flight from Denver Intl to Phoenix Sky Harbor Intl.
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Find flight deals from Denver to Sky Harbor Intl

Cheapest flights from Denver to Sky Harbor Intl
Explore the most affordable flight options available from Denver to Sky Harbor Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 19, 2025.

This CheapOair deal was found by Cheapflights users on 9/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/131:02 pmDEN - PHX
Nonstop2h 05mFrontier
Mon 12/154:12 pmPHX - DEN
Nonstop1h 56mFrontier
Deal found 9/17$85
This Frontier deal was found by Cheapflights users on 9/17. 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 9/266:30 amDEN - PHX
Nonstop2h 02mFrontier
Thu 10/99:21 amPHX - DEN
Nonstop2h 00mFrontier
Deal found 9/17$86
This Frontier deal was found by Cheapflights users on 9/18. 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.
Sun 11/25:20 amDEN - PHX
Nonstop2h 04mFrontier
Wed 11/56:11 pmPHX - DEN
Nonstop1h 53mFrontier
Deal found 9/18$87
This Frontier deal was found by Cheapflights users on 9/18. 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 10/236:55 amDEN - PHX
Nonstop2h 04mFrontier
Mon 10/279:59 pmPHX - DEN
Nonstop1h 57mFrontier
Deal found 9/18$88
This Frontier deal was found by Cheapflights users on 9/18. 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 10/166:55 amDEN - PHX
Nonstop2h 04mFrontier
Mon 10/207:59 pmPHX - DEN
Nonstop1h 56mFrontier
Deal found 9/18$89
This Kiwi.com deal was found by Cheapflights users on 9/17. 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.
Tue 10/75:18 pmDEN - PHX
Nonstop2h 03mFrontier
Wed 10/812:14 pmPHX - DEN
Nonstop2h 01mFrontier
Deal found 9/17$90
This Cheapflightsfares deal was found by Cheapflights users on 9/17. 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.
Fri 10/108:47 pmDEN - PHX
1 stop15h 12mFrontier
Tue 10/1412:14 pmPHX - DEN
Nonstop2h 01mFrontier
Deal found 9/17$91
This Mytrip deal was found by Cheapflights users on 9/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/188:55 pmDEN - PHX
Nonstop2h 00mFrontier
Mon 10/206:00 amPHX - DEN
1 stop14h 43mFrontier
Deal found 9/18$92
This Cheapflightsfares deal was found by Cheapflights users on 9/17. 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.
Fri 11/710:29 pmDEN - PHX
Nonstop2h 00mFrontier
Sun 11/910:53 pmPHX - DEN
Nonstop1h 54mFrontier
Deal found 9/17$93
This Priceline deal was found by Cheapflights users on 9/17. 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.
Sat 10/43:00 pmDEN - PHX
Nonstop2h 02mFrontier
Sat 10/45:07 pmPHX - DEN
Nonstop1h 56mFrontier
Deal found 9/17$94
This Cheapflightsfares deal was found by Cheapflights users on 9/17. 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.
Thu 11/66:20 amDEN - PHX
Nonstop2h 04mFrontier
Mon 11/108:43 pmPHX - DEN
Nonstop1h 58mFrontier
Deal found 9/17$95
This Kiwi.com deal was found by Cheapflights users on 9/17. 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.
Sat 9/273:00 pmDEN - PHX
Nonstop2h 02mFrontier
Tue 10/76:33 amPHX - DEN
Nonstop1h 59mFrontier
Deal found 9/17$96

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Sky Harbor Intl 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 19, 2025.
Use the filters below to find and compare flights from Denver to Phoenix Sky Harbor Intl Airport that are best for you.

Fly from

Denver

Fly to

Sky Harbor Intl

Route

Depart

Return

Price

DenverPhoenix

DEN - PHX

DENPHX

Denver Intl

Sat 10/25

12:36 am-1:17 pm

1 stop13h 41m

Phoenix Sky Harbor Intl

Wed 10/29

1:41 pm-9:46 am

1 stop19h 05m

$143

DenverPhoenix

DEN - PHX

DENPHX

Denver Intl

Sat 10/18

6:00 am-7:00 am

Nonstop2h 00m

Phoenix Sky Harbor Intl

Mon 10/20

8:25 pm-11:10 pm

Nonstop1h 45m

$147

DenverPhoenix

DEN - PHX

DENPHX

Denver Intl

Sat 12/6

6:59 pm-11:20 pm

1 stop4h 21m

Phoenix Sky Harbor Intl

Tue 12/9

8:05 pm-7:24 pm

1 stop23h 19m

$156

DenverPhoenix

DEN - PHX

DENPHX

Denver Intl

Wed 12/3

6:59 pm-11:20 pm

1 stop4h 21m

Phoenix Sky Harbor Intl

Sat 12/6

4:16 pm-11:59 pm

1 stop7h 43m

$156

DenverPhoenix

DEN - PHX

DENPHX

Denver Intl

Thu 11/27

11:15 am-2:40 pm

1 stop3h 25m

Phoenix Sky Harbor Intl

Tue 12/2

3:35 pm-5:20 pm

Nonstop1h 45m

$158

DenverPhoenix

DEN - PHX

DENPHX

Denver Intl

Fri 10/17

9:25 pm-10:20 pm

Nonstop1h 55m

Phoenix Sky Harbor Intl

Fri 10/24

8:25 pm-11:10 pm

Nonstop1h 45m

$177

DenverPhoenix

DEN - PHX

DENPHX

Denver Intl

Fri 11/21

7:20 pm-9:40 am

1 stop14h 20m

Phoenix Sky Harbor Intl

Sat 11/22

3:48 pm-11:59 pm

1 stop8h 11m

$188

DenverPhoenix

DEN - PHX

DENPHX

Denver Intl

Thu 10/16

12:36 am-3:19 pm

1 stop15h 43m

Phoenix Sky Harbor Intl

Sun 10/19

5:29 pm-7:36 am

1 stop13h 07m

$192

DenverPhoenix

DEN - PHX

DENPHX

Denver Intl

Thu 1/1

7:10 am-1:32 pm

1 stop6h 22m

Phoenix Sky Harbor Intl

Thu 1/8

2:20 pm-7:14 pm

1 stop4h 54m

$197

DenverPhoenix

DEN - PHX

DENPHX

Denver Intl

Thu 10/23

5:55 am-6:55 am

Nonstop2h 00m

Phoenix Sky Harbor Intl

Sun 10/26

10:30 pm-1:15 am

Nonstop1h 45m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/18

Showing 1-10 of 22 results
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The best insider tips for Denver to Phoenix Sky Harbor Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Denver to Phoenix Sky Harbor Intl Airport trip
Airlines
Frontier

Frontier's UpFront Plus seats guarantee an empty middle seat for extra comfort.


Frontier offers no in-flight entertainment or Wi-Fi; bring a book or pre-load entertainment.

Read more about Frontierby Marisa Garcia
Southwest

Enjoy free snacks and non-alcoholic drinks, plus a free drink on special occasions.


Southwest offers free messaging and high-speed Wi-Fi for a fee on all flights.

Read more about Southwestby Marisa Garcia
Airports
DEN

Use the A Line train for a quick 37-minute ride from Denver Union Station to DEN, running every 15 minutes.

Read more about DENby Emily Zemler
PHX

Take the PHX Sky Train to 44th Street Station for quick access to Downtown Phoenix via light rail in under 20 minutes.

Read more about PHXby Brandon Schultz
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Frontier and Southwest

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Brandon Schultz

Brandon Schultz

Expert on PHX

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Emily Zemler

Emily Zemler

Expert on DEN

Emily Zemler

Emily Zemler

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more

Best time to book a flight from Denver to Sky Harbor Intl

Have a flexible travel schedule? Discover the best time to fly to Sky Harbor Intl from Denver 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 Denver to Phoenix Sky Harbor Intl Airport

How far ahead should I book a flight from Denver to Phoenix Sky Harbor Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Denver to Sky Harbor Intl. Price data was last updated on September 12, 2025.

Booking 70 days in advance of your planned departure date is, on average, the best time to get cheap flights from Denver to Phoenix Sky Harbor Intl Airport. 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 Denver to Phoenix Sky Harbor Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Denver to Phoenix Sky Harbor Intl Airport (average of $258). Flying from Denver to Phoenix Sky Harbor Intl Airport in March is currently the most expensive (average of $337). 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 DEN to PHX?

Find hourly flight availability from Denver to Sky Harbor Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 19, 2025.

When flying from Denver to Phoenix Sky Harbor Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 25% versus a flight in the morning.

What is the cheapest day to fly from Denver to Phoenix Sky Harbor Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Denver to Sky Harbor Intl. Price data was last updated on September 14, 2025.

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

Reviews of airlines servicing Sky Harbor Intl

Get insights into the airlines that provide service to Sky Harbor Intl. 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 Sky Harbor Intl. Reviews last updated September 19, 2025.
Read through reviews of airlines operating flights from Denver to Phoenix Sky Harbor Intl Airport, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,965 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,925 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,172 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Denver to Sky Harbor Intl. 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 from for flights from Denver to Phoenix Sky Harbor Intl?

    Denver Intl (DEN), located 18.5 mi from the city center, is the airport you fly out of when you book flights from Denver to Phoenix Sky Harbor Intl. 5 airlines have flights from Denver Intl to Phoenix Sky Harbor Intl on a regular basis. Booking flights from Denver Intl to Phoenix Sky Harbor Intl should not be difficult; the airport handles an average of 26 outbound flights to Phoenix Sky Harbor Intl per day.

  • How long is the flight from Denver to Phoenix Sky Harbor Intl Airport?

    Airlines like Frontier, Southwest, and Alaska Airlines fly from Denver to Phoenix Sky Harbor Intl Airport in about 2h. The time it takes to get you to your destination can typically vary by up to 11h 41m. Airlines will cover a distance of 601 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Denver to Phoenix Sky Harbor Intl Airport round-trip?

    Currently priced at $59, Frontier will fly you from Denver to Phoenix Sky Harbor Intl Airport and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Southwest and American Airlines - these airlines can fly you to your destination from $137 and $137, respectively. Users have found that Frontier is 65% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Denver to Phoenix Sky Harbor Intl Airport one-way?

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $69. Users have also found prices from $69 and $78 on Frontier and Alaska Airlines, respectively.

  • What are the most reliable airlines from Denver to Phoenix Sky Harbor Intl Airport?

    Consider Frontier (74%), Air Canada (74%) or American Airlines (71%) when booking your flight. These represent the most reliable airlines when flying from Denver to Phoenix Sky Harbor Intl Airport.

  • What are the cheapest flights from Denver to Phoenix Sky Harbor Intl Airport?

    While on average a flight from Denver to Phoenix Sky Harbor Intl Airport is generally $260, our data shows the cheapest flight currently is $54. When looking at the most popular route, (Denver Intl - Phoenix Sky Harbor Intl), you can expect to pay $84 for that flight.

  • Can I find deals for flights from Denver to Sky Harbor Intl that include hotel bookings?

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

  • How can I find direct flights from Denver to Sky Harbor Intl?

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

  • Can I find deals for business class flights from Denver to Sky Harbor Intl?

    Yes. Cheapflights offers flight deals from Denver to Sky Harbor Intl 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 Denver to Phoenix Sky Harbor Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Denver to Phoenix Sky Harbor Intl Airport (average of $258). Flying from Denver to Phoenix Sky Harbor Intl Airport in March is currently the most expensive (average of $337). 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 Phoenix Sky Harbor Intl Airport?

Book flights to Phoenix Sky Harbor Intl Airport if you plan to visit one of these locations
Payson
Chandler
Globe
Goodyear
Glendale
Casa Grande
Buckeye
Camp Verde
Peoria
Surprise
Paradise Valley
Avondale
Guadalupe

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Top 5 airlines flying from Denver to Sky Harbor Intl

Discover the top 5 airlines that operate flights from Denver to Sky Harbor Intl. 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 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$59Average$148FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$137Average$243FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$137Average$242FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$140Average$283FlexibilityNo cancel feeOn-time69%
DeltaCheapest$196Average$311FlexibilityNo cancel feeOn-timeN/A

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