How often are flights from Denver to Phoenix delayed?

About 19% of weekly flights between Denver and Phoenix have experienced delays in the past year, with the average delay time being 129 minutes.

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

Over the last year, American Airlines have had the lowest number of delays on this route, with just 16% of flights being delayed.

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

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

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

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

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

Airlines like Alaska Airlines fly from Denver to Phoenix Sky Harbor Intl Airport in about 6h 51m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 601 mi.

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

Currently priced at $58, 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 United Airlines and American Airlines - these airlines can fly you to your destination from $133 and $137, respectively. Users have found that Frontier is 67% 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 Frontier. According to our data, you can fly for as low as $32. Users have also found prices from $68 and $69 on American Airlines and Southwest, respectively.

In terms of precipitation, rainfall in Phoenix Sky Harbor Intl Airport ranges from 0.0 - 1.1 inches per month. July is typically the wettest month, when rainfall can reach 1.1 in. June is typically the driest time to visit Phoenix Sky Harbor Intl Airport when rainfall is around 0.0 in.

If weather is an important factor for your trip to Phoenix Sky Harbor Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 95.0 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 55.4 F).

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 $301, our data shows the cheapest flight currently is $29. When looking at the most popular route, (Denver Intl - Phoenix Sky Harbor Intl), you can expect to pay $58 for that flight.

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

Consider Volaris (90%), United Airlines (83%) or SkyWest Airlines (82%) when booking your flight. These represent the most reliable airlines when flying from Denver to Phoenix Sky Harbor Intl Airport.

What are the most popular airlines that fly from Denver to Phoenix Sky Harbor Intl Airport?

Consider Frontier, American Airlines or United Airlines when booking your flight. These represent the most popular airlines when flying from Denver to Phoenix Sky Harbor Intl Airport.

Most accurate provider : When it comes to deals on Denver-Phoenix Sky Harbor Intl Airport flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Denver-Phoenix Sky Harbor Intl Airport flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Denver-Phoenix Sky Harbor Intl Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Denver-Phoenix Sky Harbor Intl Airport flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Phoenix Sky Harbor Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 12 outbound flights to Phoenix Sky Harbor Intl per day.

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.

$40+ Flights from Denver to Phoenix Sky Harbor Intl Airport

Q: How much does it cost to fly round-trip from Denver to Phoenix Sky Harbor Intl Airport?

Airfare is below average for this route at the moment. Denver to Phoenix Sky Harbor Intl Airport flights typically cost between $118 and $273 in January. The cheapest round-trip price found within the last 3 days was $72 on Frontier (Jan 15-Jan 16).

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Find cheap flights from Denver to Sky Harbor Intl 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 Denver Intl to Phoenix Sky Harbor Intl are usually found in January or September, booked 78 days in advance, depart on a Wednesday or Saturday and return on a Friday

Cheap 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 December 18, 2025.

Thu 12/256:15 amDEN - PHX

Nonstop2h 06mFrontier

Wed 12/319:31 amPHX - DEN

Nonstop1h 55mFrontier

Deal found 12/16

$78

Wed 12/2410:29 pmDEN - PHX

Nonstop2h 00mFrontier

Thu 1/17:00 amPHX - DEN

Nonstop1h 55mFrontier

Deal found 12/16

$86

Tue 12/306:35 amDEN - PHX

1 stop10h 10mFrontier

Tue 1/64:41 pmPHX - DEN

Nonstop1h 56mFrontier

Deal found 12/16

$110

Wed 12/3110:29 pmDEN - PHX

Nonstop2h 00mFrontier

Thu 1/17:00 amPHX - DEN

Nonstop1h 55mFrontier

Deal found 12/17

$112

Wed 12/3110:29 pmDEN - PHX

Nonstop2h 00mFrontier

Mon 1/512:58 pmPHX - DEN

1 stop21h 38mFrontier

Deal found 12/16

$113

Tue 12/306:35 amDEN - PHX

1 stop10h 10mFrontier

Thu 1/13:43 pmPHX - DEN

Nonstop1h 56mFrontier

Deal found 12/17

$120

Thu 12/2510:29 pmDEN - PHX

Nonstop2h 00mFrontier

Tue 12/306:00 amPHX - DEN

1 stop16h 44mFrontier

Deal found 12/16

$121

Tue 12/236:35 amDEN - PHX

1 stop10h 10mFrontier

Thu 12/259:31 amPHX - DEN

Nonstop1h 55mFrontier

Deal found 12/15

$133

Best flights from Denver to Sky Harbor Intl
Discover carefully curated flight deals from Denver to Sky Harbor Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

Sat 1/1712:34 pmDEN - PHX

1 stop6h 51mAlaska Airlines

Wed 1/213:45 pmPHX - DEN

1 stop8h 13mAlaska Airlines

Deal found 12/15

$136

Tue 1/69:35 amDEN - PHX

Nonstop2h 06mUnited Airlines

Tue 1/132:42 pmPHX - DEN

Nonstop1h 56mUnited Airlines

Deal found 12/15

$159

Tue 2/312:34 pmDEN - PHX

1 stop6h 51mAlaska Airlines

Sat 2/2812:28 pmPHX - DEN

1 stop5h 20mAlaska Airlines

Deal found 12/16

$136

Fri 2/67:39 pmDEN - PHX

1 stop18h 21mAlaska Airlines

Tue 2/108:24 amPHX - DEN

1 stop15h 34mAlaska Airlines

Deal found 12/15

$156

Tue 1/278:04 amDEN - PHX

1 stop5h 56mAlaska Airlines

Thu 1/2911:41 amPHX - DEN

1 stop7h 00mAlaska Airlines

Deal found 12/15

$156

Wed 1/288:04 amDEN - PHX

1 stop5h 56mAlaska Airlines

Fri 1/3011:41 amPHX - DEN

1 stop7h 00mAlaska Airlines

Deal found 12/17

$156

Thu 1/1512:34 pmDEN - PHX

1 stop6h 51mAlaska Airlines

Tue 1/208:24 amPHX - DEN

1 stop15h 34mAlaska Airlines

Deal found 12/17

$156

Sat 1/248:04 amDEN - PHX

1 stop5h 56mAlaska Airlines

Fri 1/3011:41 amPHX - DEN

1 stop7h 00mAlaska Airlines

Deal found 12/17

$156

Fri 1/3012:34 pmDEN - PHX

1 stop6h 51mAlaska Airlines

Sun 2/18:24 amPHX - DEN

1 stop10h 17mAlaska Airlines

Deal found 12/16

$176

Mon 1/197:39 pmDEN - PHX

1 stop18h 21mAlaska Airlines

Fri 1/238:24 amPHX - DEN

1 stop10h 17mAlaska Airlines

Deal found 12/15

$176

Thu 1/2912:34 pmDEN - PHX

1 stop6h 51mAlaska Airlines

Sun 2/18:24 amPHX - DEN

1 stop10h 17mAlaska Airlines

Deal found 12/16

$176

Last-minute flights from Denver to Sky Harbor Intl
Discover last-minute flight deals from Denver to Sky Harbor Intl. Data last updated December 18, 2025 and is based on user searches.

Thu 12/256:15 amDEN - PHX

Nonstop2h 06mFrontier

Wed 12/319:31 amPHX - DEN

Nonstop1h 55mFrontier

Deal found 12/16

$78

Tue 1/61:26 pmDEN - PHX

Nonstop2h 05mFrontier

Fri 1/99:22 pmPHX - DEN

Nonstop1h 57mFrontier

Deal found 12/16

$82

Tue 1/61:26 pmDEN - PHX

Nonstop2h 05mFrontier

Sun 1/119:36 amPHX - DEN

1 stop24h 38mFrontier

Deal found 12/17

$89

Thu 1/89:50 amDEN - PHX

Nonstop2h 05mFrontier

Mon 1/126:25 pmPHX - DEN

Nonstop1h 55mFrontier

Deal found 12/18

$80

Thu 1/810:29 pmDEN - PHX

Nonstop2h 00mFrontier

Sat 1/101:33 pmPHX - DEN

1 stop5h 30mFrontier

Deal found 12/18

$90

Sun 1/116:08 pmDEN - PHX

Nonstop2h 05mFrontier

Wed 1/142:59 pmPHX - DEN

Nonstop1h 53mFrontier

Deal found 12/16

$83

Mon 1/1210:29 pmDEN - PHX

Nonstop2h 00mFrontier

Thu 1/153:08 pmPHX - DEN

Nonstop1h 52mFrontier

Deal found 12/16

$73

Thu 1/156:00 amDEN - PHX

Nonstop2h 12mFrontier

Fri 1/167:34 pmPHX - DEN

Nonstop1h 54mFrontier

Deal found 12/17

$72

Fri 1/1610:48 pmDEN - PHX

Nonstop2h 11mFrontier

Mon 1/197:34 pmPHX - DEN

Nonstop1h 54mFrontier

Deal found 12/17

$74

Sun 1/255:40 pmDEN - PHX

1 stop6h 33mFrontier

Tue 1/271:00 pmPHX - DEN

Nonstop1h 54mFrontier

Deal found 12/17

$86

Sun 1/2510:48 pmDEN - PHX

Nonstop2h 11mFrontier

Fri 1/307:00 amPHX - DEN

Nonstop1h 54mFrontier

Deal found 12/16

$87

Wed 1/287:00 amDEN - PHX

1 stop6h 39mFrontier

Wed 1/283:55 pmPHX - DEN

Nonstop1h 54mFrontier

Deal found 12/17

$88

One-way flights from Denver to Sky Harbor Intl
Search for one-way flight options from Denver to Sky Harbor Intl. Find affordable one-way fares based on user searches. Data last updated December 18, 2025.

Sat 2/711:27 amDEN - PHX

Nonstop2h 13mFrontier

Deal found 12/18

$40

Tue 3/104:36 pmDEN - PHX

Nonstop2h 10mFrontier

Deal found 12/18

$41

Fri 1/910:29 pmDEN - PHX

Nonstop2h 00mFrontier

Deal found 12/16

$53

Mon 1/269:10 amDEN - PHX

1 stop15h 22mFrontier

Deal found 12/18

$57

Sun 1/254:14 pmDEN - PHX

Nonstop2h 10mFrontier

Deal found 12/16

$58

Fri 2/1310:30 pmDEN - PHX

Nonstop2h 11mFrontier

Deal found 12/18

$59

Sat 3/712:49 pmDEN - PHX

Nonstop2h 12mFrontier

Deal found 12/18

$60

Wed 3/1110:30 pmDEN - PHX

1 stop19h 11mFrontier

Deal found 12/18

$61

Sat 1/176:49 pmDEN - PHX

1 stop22h 00mFrontier

Deal found 12/18

$62

Wed 1/219:44 pmDEN - PHX

1 stop17h 34mFrontier

Deal found 12/16

$63

Find flight deals from Denver to Sky Harbor Intl

Most accurate provider	CheapOair 3 stars
Most trusted provider	CheapOair 3 stars
Round-trip from	$72 (Kiwi.com)
One-way from	$40 (Priceline)
Popular in	November
Cheapest in	January
Average price	$188
Good round-trip deal	$120 or less
Good one-way deal	$73 or less

Provider with most accurate pricing for Denver Intl-Phoenix Sky Harbor Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Denver Intl-Phoenix Sky Harbor Intl flights.

Search Deals

From Denver Intl to Phoenix Sky Harbor Intl

Search Deals

One-way flight from Denver Intl to Phoenix Sky Harbor Intl

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($18 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

Price to beat on a round-trip flight from Denver Intl to Phoenix Sky Harbor Intl.

Search Deals

Price to beat on a one-way flight from Denver Intl to Phoenix Sky Harbor Intl.

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Denver to Phoenix Sky Harbor Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverPhoenix

DEN - PHX

DENPHX

Denver Intl

Sat 1/17

12:34 pm-7:25 pm

1 stop6h 51m

Phoenix Sky Harbor Intl

Wed 1/21

3:45 pm-11:58 pm

1 stop8h 13m

$136

DenverPhoenix

DEN - PHX

DENPHX

Denver Intl

Tue 2/3

12:34 pm-7:25 pm

1 stop6h 51m

Phoenix Sky Harbor Intl

Sat 2/28

12:28 pm-5:48 pm

1 stop5h 20m

$136

DenverPhoenix

DEN - PHX

DENPHX

Denver Intl

Fri 2/6

7:39 pm-2:00 pm

1 stop18h 21m

Phoenix Sky Harbor Intl

Tue 2/10

8:24 am-11:58 pm

1 stop15h 34m

$156

DenverPhoenix

DEN - PHX

DENPHX

Denver Intl

Tue 1/27

8:04 am-2:00 pm

1 stop5h 56m

Phoenix Sky Harbor Intl

Thu 1/29

11:41 am-6:41 pm

1 stop7h 00m

$156

DenverPhoenix

DEN - PHX

DENPHX

Denver Intl

Wed 1/28

8:04 am-2:00 pm

1 stop5h 56m

Phoenix Sky Harbor Intl

Fri 1/30

11:41 am-6:41 pm

1 stop7h 00m

$156

DenverPhoenix

DEN - PHX

DENPHX

Denver Intl

Thu 1/15

12:34 pm-7:25 pm

1 stop6h 51m

Phoenix Sky Harbor Intl

Tue 1/20

8:24 am-11:58 pm

1 stop15h 34m

$156

DenverPhoenix

DEN - PHX

DENPHX

Denver Intl

Sat 1/24

8:04 am-2:00 pm

1 stop5h 56m

Phoenix Sky Harbor Intl

Fri 1/30

11:41 am-6:41 pm

1 stop7h 00m

$156

DenverPhoenix

DEN - PHX

DENPHX

Denver Intl

Tue 1/6

9:35 am-11:41 am

Nonstop2h 06m

Phoenix Sky Harbor Intl

Tue 1/13

2:42 pm-4:38 pm

Nonstop1h 56m

$159

DenverPhoenix

DEN - PHX

DENPHX

Denver Intl

Fri 1/30

12:34 pm-7:25 pm

1 stop6h 51m

Phoenix Sky Harbor Intl

Sun 2/1

8:24 am-6:41 pm

1 stop10h 17m

$176

DenverPhoenix

DEN - PHX

DENPHX

Denver Intl

Mon 1/19

7:39 pm-2:00 pm

1 stop18h 21m

Phoenix Sky Harbor Intl

Fri 1/23

8:24 am-6:41 pm

1 stop10h 17m

$176

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 23 results

Compare providers for flights from Denver to Sky Harbor Intl

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Sky Harbor Intl in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Cheapflightsfares	Price Accuracy3 stars	Trust Score*2 stars
JustAirTicket	Price Accuracy-	Trust Score*1 star
CheapOair	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars
Kiwi.com	Price Accuracy3 stars	Trust Score*3 stars
Justfly.com	Price Accuracy3 stars	Trust Score*3 stars
CheapTicketsDeal	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Denver-Phoenix Sky Harbor Intl Airport flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Denver-Phoenix Sky Harbor Intl Airport flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Denver-Phoenix Sky Harbor Intl Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Denver-Phoenix Sky Harbor Intl Airport flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Phoenix Sky Harbor Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Prices

Delays

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

Booking 78 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, February is the cheapest month in which you can book a flight from Denver to Phoenix Sky Harbor Intl Airport (average of $56). Flying from Denver to Phoenix Sky Harbor Intl Airport in July is currently the most expensive (average of $97). 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?

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 23% versus a flight in the morning.

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

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 afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Denver to Phoenix Sky Harbor Intl Airport?

The best insider tips for Denver to Phoenix Sky Harbor Intl Airport flights

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.

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.

Airports

DEN

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

PHX

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

Our travel experts

Marisa Garcia

Expert on Frontier and Southwest

Brandon Schultz

Expert on PHX

Emily Zemler

Expert on DEN

Reviews of airlines servicing Sky Harbor Intl

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

7.9

Good

4,250 reviews

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

7.9

Good

4,250 reviews

Southwest

7.9

Good

4,250 reviews

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

Delta

7.9

Good

8,005 reviews

Southwest

7.9

Good

4,250 reviews

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

9,091 reviews

Southwest

7.9

Good

4,250 reviews

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

11,054 reviews

Southwest

7.9

Good

4,250 reviews

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

3,081 reviews

Southwest

7.9

Good

4,250 reviews

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

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 12 outbound flights to Phoenix Sky Harbor Intl per day.
How long is the flight from Denver to Phoenix Sky Harbor Intl Airport?
Airlines like Alaska Airlines fly from Denver to Phoenix Sky Harbor Intl Airport in about 6h 51m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 601 mi.
What are the cheapest airlines flying from Denver to Phoenix Sky Harbor Intl Airport round-trip?
Currently priced at $58, 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 United Airlines and American Airlines - these airlines can fly you to your destination from $133 and $137, respectively. Users have found that Frontier is 67% 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 Frontier. According to our data, you can fly for as low as $32. Users have also found prices from $68 and $69 on American Airlines and Southwest, respectively.
What are the most reliable airlines from Denver to Phoenix Sky Harbor Intl Airport?
Consider Volaris (90%), United Airlines (83%) or SkyWest Airlines (82%) 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 $301, our data shows the cheapest flight currently is $29. When looking at the most popular route, (Denver Intl - Phoenix Sky Harbor Intl), you can expect to pay $58 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, February is the cheapest month in which you can book a flight from Denver to Phoenix Sky Harbor Intl Airport (average of $56). Flying from Denver to Phoenix Sky Harbor Intl Airport in July is currently the most expensive (average of $97). 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.

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Top 5 airlines flying from Denver to Sky Harbor Intl

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$59	Average$154	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$136	Average$280	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$137	Average$242	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$144	Average$250	FlexibilityNo cancel fee	On-time63%
Delta	Cheapest$196	Average$297	FlexibilityNo cancel fee	On-timeN/A

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$40+ 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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapflights Tip: The best prices from Denver Intl to Phoenix Sky Harbor Intl are usually found in January or September, booked 78 days in advance, depart on a Wednesday or Saturday and return on a Friday

Cheap flight deals from Denver to Sky Harbor Intl

Cheapest flights from Denver to Sky Harbor IntlExplore 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 December 18, 2025.

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 December 18, 2025.

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

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Everything you need to know about your flight from Denver to Phoenix Sky Harbor Intl Airport

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The best insider tips for Denver to Phoenix Sky Harbor Intl Airport flights

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Cheapflights partnered with top experts to bring you the best recommendations for your Denver to Phoenix Sky Harbor Intl Airport trip

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Reviews of airlines servicing Sky Harbor Intl

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.

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.

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Top 5 airlines flying from Denver to Sky Harbor Intl

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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 December 18, 2025.