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Cheap flights from Denver (DEN) to Phoenix

DEN — PHX
Oct 24 — Oct 311
Sat 10/24
Sat 10/31
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to Phoenix are usually found in January or December, booked 37 days in advance, depart on a Saturday or Wednesday and return on a Saturday

Find flight deals from Denver to Phoenix

Popular in

July

Cheapest in

January

Average price

$210
Highest demand for flights based on searches. 11% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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Best time to book a flight from Denver to Phoenix

Have a flexible travel schedule? Discover the best time to fly to Phoenix from Denver with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Denver to Phoenix

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

The price you pay for your flight from Denver to Phoenix may vary depending on when you book. For the best chance of a lower fare, look to book 36 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 Denver to Phoenix?

Currently, January is the cheapest month in which you can book a flight from Denver to Phoenix (average of $181). Flying from Denver to Phoenix in July is currently the most expensive (average of $243). 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, 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 45% versus a flight in the afternoon.

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

Travelers seeking maximum savings on their Denver to Phoenix flight should consider departing on Saturday afternoons 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.

The best insider tips for Denver to Phoenix flights

Cheapflights partnered with top experts to bring you the best recommendations for your Denver to Phoenix trip
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Frontier and Southwest

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 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 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

Reviews of airlines servicing Phoenix

Read reviews from past customers who have flown Southwest,United Airlines, andJetBlue from Denver to Phoenix. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,199 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
10.0
Excellent

Courtney,Sep 2026

DEN - STL

I still think the aircraft should load from the back and window seats first for all passengers. It's so much easier and efficient to board when you do not have to worry about hitting Anyone already seated.
Southwest
8.0
Very good
4,199 reviews
Southwest
8.0
Very good
4,199 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
10.0
Excellent

Courtney,Sep 2026

DEN - STL

I still think the aircraft should load from the back and window seats first for all passengers. It's so much easier and efficient to board when you do not have to worry about hitting Anyone already seated.
United Airlines
7.4
Good
10,233 reviews
Southwest
8.0
Very good
4,199 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
10.0
Excellent

Courtney,Sep 2026

DEN - STL

I still think the aircraft should load from the back and window seats first for all passengers. It's so much easier and efficient to board when you do not have to worry about hitting Anyone already seated.
JetBlue
7.1
Good
3,040 reviews
Southwest
8.0
Very good
4,199 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
10.0
Excellent

Courtney,Sep 2026

DEN - STL

I still think the aircraft should load from the back and window seats first for all passengers. It's so much easier and efficient to board when you do not have to worry about hitting Anyone already seated.
American Airlines
7.0
Good
12,074 reviews
Southwest
8.0
Very good
4,199 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
10.0
Excellent

Courtney,Sep 2026

DEN - STL

I still think the aircraft should load from the back and window seats first for all passengers. It's so much easier and efficient to board when you do not have to worry about hitting Anyone already seated.
Frontier
5.6
Fair
2,578 reviews
Southwest
8.0
Very good
4,199 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
10.0
Excellent

Courtney,Sep 2026

DEN - STL

I still think the aircraft should load from the back and window seats first for all passengers. It's so much easier and efficient to board when you do not have to worry about hitting Anyone already seated.

Related info for your journey

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

    Denver Intl (DEN) is the airport you will fly out of if you book a flight from Denver to Phoenix. You should not have trouble finding flights to Phoenix from Denver Intl; the airport handles an average of 21 outbound flights to Phoenix per day. You should also have plenty of airline options to choose from since 5 airlines have flights from the Denver airport to Phoenix. It is only a 18.5 mi journey to Denver Intl (DEN) from Denver’s city center.

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

    Frontier, at $61, was found to be the cheapest airline from Denver to Phoenix.Alternate airlines to your destination round-trip include American Airlines and United Airlines. Frontier is priced at 71% lower than the current average price of a flight leaving 3 months from now.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $28. JetBlue flights start at $51 while deals on American Airlines start at $68 one-way.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Denver to Phoenix on time: United Airlines (80%), Air Canada (77%), Frontier (77%).

  • What are the cheapest flights from Denver to Phoenix?

    On average you can expect to pay $750 for a flight from Denver to Phoenix. The cheapest flight overall is $57 while the most popular route, (Denver Intl - Phoenix Sky Harbor Intl) is currently priced at $88.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Denver to Phoenix 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?

    Currently, January is the cheapest month in which you can book a flight from Denver to Phoenix (average of $181). Flying from Denver to Phoenix in July is currently the most expensive (average of $243). 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

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from Denver to Phoenix

AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$61Average$187FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$146Average$275FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$147Average$334FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$173Average$300FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$174Average$268FlexibilityNo cancel feeOn-time62%

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