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$34+ 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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — DEN
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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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 12, 2025.

This Super.com deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:00 amPHX - DEN
Nonstop1h 55mFrontier
Thu 12/256:15 amDEN - PHX
Nonstop2h 06mFrontier
Deal found 12/9$77
This Frontier deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:31 amPHX - DEN
Nonstop1h 55mFrontier
Thu 1/110:29 pmDEN - PHX
Nonstop2h 00mFrontier
Deal found 12/10$78
This Frontier deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:00 amPHX - DEN
Nonstop1h 55mFrontier
Tue 1/61:26 pmDEN - PHX
Nonstop2h 05mFrontier
Deal found 12/9$104
This Super.com deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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
Thu 1/810:29 pmDEN - PHX
Nonstop2h 00mFrontier
Deal found 12/9$107
This Expedia deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:42 pmPHX - DEN
1 stop6h 36mMultiple Airlines
Thu 1/110:29 pmDEN - PHX
Nonstop2h 00mMultiple Airlines
Deal found 12/9$112
This Frontier deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:00 amPHX - DEN
Nonstop1h 55mFrontier
Wed 12/3110:29 pmDEN - PHX
Nonstop2h 00mFrontier
Deal found 12/11$113
This Frontier deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2910:26 pmPHX - DEN
1 stop5h 32mFrontier
Thu 1/810:29 pmDEN - PHX
Nonstop2h 00mFrontier
Deal found 12/10$114
This Frontier deal was found by Cheapflights users on 12/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/167:00 amPHX - DEN
Nonstop1h 55mFrontier
Tue 1/611:02 amDEN - PHX
Nonstop2h 04mFrontier
Deal found 12/8$115
This Frontier deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:31 amPHX - DEN
Nonstop1h 55mFrontier
Mon 12/2910:37 pmDEN - PHX
1 stop10h 11mFrontier
Deal found 12/9$120

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 12, 2025.

Round-trip from

$67
(Super.com)

One-way from

$34
(CheapOair)

Popular in

June

Cheapest in

February

Average price

$179
From Phoenix to Denver Intl
Search Deals
One-way flight from Phoenix to Denver Intl
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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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 12, 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

Sat 1/17

3:45 pm-11:58 pm

1 stop8h 13m

Denver Intl

Sun 1/18

12:34 pm-7:25 pm

1 stop6h 51m

$136

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Wed 1/14

8:24 am-11:58 pm

1 stop15h 34m

Denver Intl

Sun 1/18

8:04 am-3:03 pm

1 stop6h 59m

$136

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Thu 12/25

3:43 pm-5:39 pm

Nonstop1h 56m

Denver Intl

Tue 12/30

6:15 am-8:21 am

Nonstop2h 06m

$147

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Thu 1/15

3:45 pm-11:58 pm

1 stop8h 13m

Denver Intl

Sun 1/18

8:04 am-3:03 pm

1 stop6h 59m

$156

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Sat 12/20

9:31 am-11:26 am

Nonstop1h 55m

Denver Intl

Tue 1/6

1:26 pm-3:31 pm

Nonstop2h 05m

$163

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Tue 1/6

6:06 am-6:15 pm

2 stops12h 09m

Denver Intl

Sat 1/10

8:04 am-2:00 pm

1 stop5h 56m

$165

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Fri 1/16

3:45 pm-11:58 pm

1 stop8h 13m

Denver Intl

Wed 1/21

12:34 pm-7:25 pm

1 stop6h 51m

$166

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

$166

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Fri 12/19

6:04 pm-10:39 pm

1 stop4h 35m

Denver Intl

Mon 1/5

10:29 pm-12:29 am

Nonstop2h 00m

$169

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Wed 12/24

12:15 pm-7:13 pm

1 stop6h 58m

Denver Intl

Thu 12/25

6:27 pm-11:55 pm

1 stop5h 28m

$177

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 21 results
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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 5, 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 12, 2025.

It’s optimal to fly from Phoenix to Denver in the evening. By choosing this option you can save up to 49% 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 Monday at noon 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 12, 2025.

The most flights from PH1 to DEN are scheduled on a Thursday (48 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (22 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 12, 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
7.9
Good
4,253 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

7.9

Crew

8.6

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
4,253 reviews
Southwest
7.9
Good
4,253 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

7.9

Crew

8.6

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
9,093 reviews
Southwest
7.9
Good
4,253 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

7.9

Crew

8.6

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
11,049 reviews
Southwest
7.9
Good
4,253 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

7.9

Crew

8.6

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
3,083 reviews
Southwest
7.9
Good
4,253 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

7.9

Crew

8.6

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 34 daily inbound flights from Phoenix from 4 different airlines.

  • How long is the flight from Phoenix to Denver?

    Alaska Airlines and Frontier can get you from Phoenix to Denver in just under 1h 56m. Your travel time can differ by up to 6h 17m. 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 $62. Additional round-trip tickets that might be worth considering are offered by United Airlines and American Airlines, with the lowest prices starting at $135 and $137, respectively. Frontier is priced at 62% 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 $31. Users have also found prices from $68 and $74 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 (85%), Envoy Air (83%) and SkyWest Airlines (83%).

  • What are the cheapest flights from Phoenix to Denver?

    The cheapest flight price from Phoenix to Denver is $45. On average you can expect to pay $935. The most popular route, (Phoenix Sky Harbor Intl - Denver Intl), can usually be booked for $66.

  • 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
Black Hawk
Thornton
Westminster
Broomfield
Lakewood
Golden
Winter Park
Greeley
Lone Tree
Cripple Creek
Silverthorne
Central City
Frisco
Wheat Ridge
Manitou Springs
Fort Morgan
Brighton
Longmont
Idaho Springs
Parker

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.
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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 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$65Average$147FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$137Average$222FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$138Average$358FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$153Average$243FlexibilityNo cancel feeOn-time63%

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