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$40+ 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — DEN
Apr 9 — Apr 161
Wed 4/9
Wed 4/16
1 adult, Economy
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Cheapflights Tip: The best prices from Phoenix to Denver Intl are usually found in August or February, booked 62 days in advance, depart on a Thursday or Friday and return on a Saturday

Cheap 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 April 4, 2025.

Round-trip from

$76
(Cheapflightsfares)

One-way from

$40
(Frontier)

Popular in

March

Cheapest in

August

Average price

$135
From Phoenix to Denver Intl
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One-way flight from Phoenix to Denver Intl
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Highest demand for flights based on searches. 4% potential increase in price ($6 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find 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 April 4, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/3. 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.
Tue 5/135:50 amPHX - DEN
Nonstop1h 56mFrontier
Wed 5/149:43 pmDEN - PHX
Nonstop2h 04mFrontier
Deal found 4/3$76
This FlightHub deal was found by Cheapflights users on 4/3. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/810:10 amPHX - DEN
1 stop3h 55mMultiple Airlines
Sat 5/1010:53 pmDEN - PHX
Nonstop2h 02mMultiple Airlines
Deal found 4/3$164
This Southwest deal was found by Cheapflights users on 4/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/36:00 amPHX - DEN
Nonstop1h 50mSouthwest
Sun 5/46:05 amDEN - PHX
1 stop4h 40mSouthwest
Deal found 4/3$182
This American Airlines deal was found by Cheapflights users on 4/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/157:56 pmPHX - DEN
Nonstop1h 43mAmerican Airlines
Wed 5/218:01 amDEN - PHX
Nonstop2h 07mAmerican Airlines
Deal found 4/2$187
This Delta deal was found by Cheapflights users on 4/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/136:00 amPHX - DEN
1 stop5h 04mDelta
Wed 5/147:05 amDEN - PHX
1 stop6h 06mDelta
Deal found 4/4$197
This United Airlines deal was found by Cheapflights users on 4/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/144:13 pmPHX - DEN
1 stop5h 34mUnited Airlines
Tue 8/197:20 pmDEN - PHX
Nonstop1h 54mUnited Airlines
Deal found 4/4$229
This FlightHub deal was found by Cheapflights users on 4/3. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2510:10 amPHX - DEN
1 stop3h 55mContour
Sun 4/274:00 pmDEN - PHX
1 stop18h 00mContour
Deal found 4/3$253

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 April 4, 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 5/13

5:50 am-8:46 am

Nonstop1h 56m

Denver Intl

Wed 5/14

9:43 pm-10:47 pm

Nonstop2h 04m

$76

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Thu 5/8

10:10 am-3:05 pm

1 stop3h 55m

Denver Intl

Sat 5/10

10:53 pm-11:55 pm

Nonstop2h 02m

$164

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Sat 5/3

6:00 am-8:50 am

Nonstop1h 50m

Denver Intl

Sun 5/4

6:05 am-9:45 am

1 stop4h 40m

$182

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Thu 5/15

7:56 pm-10:39 pm

Nonstop1h 43m

Denver Intl

Wed 5/21

8:01 am-9:08 am

Nonstop2h 07m

$187

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Tue 5/13

6:00 am-12:04 pm

1 stop5h 04m

Denver Intl

Wed 5/14

7:05 am-12:11 pm

1 stop6h 06m

$197

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Fri 4/25

7:38 am-10:32 am

Nonstop1h 54m

Denver Intl

Sun 4/27

8:35 pm-9:34 pm

Nonstop1h 59m

$237

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Fri 4/25

10:10 am-3:05 pm

1 stop3h 55m

Denver Intl

Sun 4/27

4:00 pm-9:00 am

1 stop18h 00m

$253

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Wed 5/14

7:15 am-10:09 am

Nonstop1h 54m

$40

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Mon 5/19

2:30 pm-5:20 pm

Nonstop1h 50m

$94

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Wed 6/18

2:56 pm-6:14 pm

1 stop26h 18m

$97

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/4

Showing 1-10 of 16 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 March 28, 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 62 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, October is the cheapest month in which you can book a flight from Phoenix to Denver (average of $197). Flying from Phoenix to Denver in March is currently the most expensive (average of $278). 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 April 4, 2025.

It’s optimal to fly from Phoenix to Denver in the evening. By choosing this option you can save up to 64% 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 evenings 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 April 4, 2025.

The most flights from PH1 to DEN are scheduled on a Friday (52 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).

Rainfall in Denver by month

Plan your trip to Denver by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Denver ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Denver when rainfall is around 0.5 in.

Temperature in Denver by month

Plan your trip to Denver by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Denver, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 April 4, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta from Phoenix to Denver by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,837 reviews

Food

7.1

Crew

8.5

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,837 reviews
Alaska Airlines
8.0
Very good
9,837 reviews

Food

7.1

Crew

8.5

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,276 reviews
Alaska Airlines
8.0
Very good
9,837 reviews

Food

7.1

Crew

8.5

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,899 reviews
Alaska Airlines
8.0
Very good
9,837 reviews

Food

7.1

Crew

8.5

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,618 reviews
Alaska Airlines
8.0
Very good
9,837 reviews

Food

7.1

Crew

8.5

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Allegiant Air
7.3
Good
732 reviews
Alaska Airlines
8.0
Very good
9,837 reviews

Food

7.1

Crew

8.5

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 31 daily inbound flights from Phoenix from 4 different airlines.

  • 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 $76. Additional round-trip tickets that might be worth considering are offered by Southwest and American Airlines, with the lowest prices starting at $182 and $187, respectively. Frontier is priced at 42% 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 $40. Users have also found prices from $94 and $97 on Southwest and Allegiant Air, respectively.

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

    The top 3 most reliable airlines when flying from Phoenix to Denver are United Airlines (90%), Lufthansa (89%) and Air Canada (89%).

  • What are the cheapest flights from Phoenix to Denver?

    The cheapest flight price from Phoenix to Denver is $56. On average you can expect to pay $1,751. The most popular route, (Phoenix Sky Harbor Intl - Denver Intl), can usually be booked for $110.

  • 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, October is the cheapest month in which you can book a flight from Phoenix to Denver (average of $197). Flying from Phoenix to Denver in March is currently the most expensive (average of $278). 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?

Book flights to Phoenix if you plan to visit one of these locations
Westminster
Black Hawk
Lakewood
Winter Park
Cripple Creek
Golden
Silverthorne
Brighton
Broomfield
Greeley
Frisco
Wheat Ridge
Grand Lake
Central City
Glendale
Copper Mountain
Longmont
Thornton
Idaho Springs
Limon

Browse thousands of different options on Cheapflights for your next trip

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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 April 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$48Average$127FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$129Average$216FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$137Average$329FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$139Average$237FlexibilityNo cancel feeOn-time63%

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