$23 Cheap Flights from Denver (DEN) to Phoenix (PHX)

View $23 flight on Tue, Apr 7, 2026Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to Phoenix Sky Harbor Intl. Airport (PHX)

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Cheap Flights from Denver to Phoenix (DEN-PHX)

Prices were available within the past 7 days and start at $23 for one-way flights and $46 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Tue, May 5 - Wed, May 6
DEN
Denver
PHX
Phoenix
$46 Roundtrip, found 1 hour ago
$46
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Tue, May 5 from Denver to Phoenix, returning Wed, May 6, priced at $46 found 1 hour ago
Frontier Airlines
Sat, Mar 7 - Wed, Mar 11
DEN
Denver
PHX
Phoenix
$51 Roundtrip, found 1 hour ago
$51
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sat, Mar 7 from Denver to Phoenix, returning Wed, Mar 11, priced at $51 found 1 hour ago
Frontier Airlines
Tue, Mar 3 - Wed, Mar 4
DEN
Denver
PHX
Phoenix
$56 Roundtrip, found 1 hour ago
$56
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Tue, Mar 3 from Denver to Phoenix, returning Wed, Mar 4, priced at $56 found 1 hour ago
Frontier Airlines
Tue, Feb 24 - Sat, Feb 28
DEN
Denver
PHX
Phoenix
$57 Roundtrip, found 4 hours ago
$57
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Tue, Feb 24 from Denver to Phoenix, returning Sat, Feb 28, priced at $57 found 4 hours ago
Frontier Airlines
Mon, Mar 9 - Tue, Mar 10
DEN
Denver
PHX
Phoenix
$61 Roundtrip, found 1 hour ago
$61
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Mon, Mar 9 from Denver to Phoenix, returning Tue, Mar 10, priced at $61 found 1 hour ago
Frontier Airlines
Tue, Feb 24 - Tue, Mar 3
DEN
Denver
PHX
Phoenix
$62 Roundtrip, just found
$62
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Feb 24 from Denver to Phoenix, returning Tue, Mar 3, priced at $62 just found
Alaska Airlines
Sat, Mar 7 - Wed, Mar 11
DEN
Denver
PHX
Phoenix
$137 Roundtrip, found 1 hour ago
$137
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Sat, Mar 7 from Denver to Phoenix, returning Wed, Mar 11, priced at $137 found 1 hour ago
United
Sat, Mar 7 - Wed, Mar 11
DEN
Denver
PHX
Phoenix
$137 Roundtrip, found 1 hour ago
$137
Roundtrip
found 1 hour ago
Select United flight, departing Sat, Mar 7 from Denver to Phoenix, returning Wed, Mar 11, priced at $137 found 1 hour ago
Southwest Airlines
Sat, Mar 7 - Wed, Mar 11
DEN
Denver
PHX
Phoenix
$137 Roundtrip, found 1 hour ago
$137
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Sat, Mar 7 from Denver to Phoenix, returning Wed, Mar 11, priced at $137 found 1 hour ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Mon, Mar 23 - Fri, Mar 27
DEN
Denver
PHX
Phoenix
$824 Roundtrip, found 1 hour ago
$824
Roundtrip
found 1 hour ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Mon, Mar 23 from Denver to Phoenix, returning Fri, Mar 27, priced at $824 found 1 hour ago

Alternative airports near Phoenix

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Sky Harbor Intl. PHX. Cheapest and Closest option available. Average driving time to city center is 10 minutes. Flights from $148
PHX
Sky Harbor Intl.
CheapestClosest
Average driving time to city center10 min
Flights from $148

Find the cheapest month to fly from Denver (DEN) to Phoenix (PHX)

February is typically the cheapest month to fly

From $48 - $100 per traveler.
Flights from Denver (DEN) to Phoenix (PHX)
Origin airport
Denver Intl.
Destination airport
Sky Harbor Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, KEY LIME AIR DBA DENVER AIR CONNECTION, Southwest Airlines, United
Roundtrip price
$46
Distance
601 mi
Average flight time
1 hour 59 mins

Denver to Phoenix Flights

The cheapest times to fly from Denver to Phoenix

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Denver to Phoenix are during the month of May. You can find some of the cheapest flights from Denver to Phoenix with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Denver to Phoenix

Sunday is one of the best days to book for cheap flights from Denver to Phoenix: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Denver to Phoenix

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Denver to Phoenix in 2026. You can also book with separate airlines for your outbound and return journeys, from $23 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Denver to Phoenix flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Denver to Phoenix airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) cost?
You can find cheap one-way flights from $23 and cheap return flights from $46 Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) with Expedia. One-way flights generally range between $94 and $1207, and roundtrip flights usually range from $132 to $1470. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
The cheapest month to fly from DEN to PHX is May when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
3 airlines operate nonstop service from DEN to PHX:

  • United operates around 60 direct flights from DEN to PHX every week
  • American Airlines operates around 32 direct flights from DEN to PHX every week
  • Frontier Airlines operates around 36 direct flights from DEN to PHX every week

What is the cheapest airline that flies from Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
American Airlines is one of the cheapest airlines offering nonstop flights from Denver Intl. (DEN) to Sky Harbor Intl. (PHX), with round-trip tickets starting from around $129. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
To find a cheap flight from Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
The best airline to fly with from Denver, CO (DEN) to Phoenix, AZ (PHX) will differ from traveler to traveler. If you like to fly early, WN offers early morning flights. If price is the most important factor, Frontier Airlines typically offers the lowest fares. WN also offers the most daily flights from DEN to PHX, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
There are approximately 29 nonstop flights per day from Denver Intl. (DEN) to Sky Harbor Intl. (PHX). For more options, look at flights that include layovers.
What is the earliest flight from Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
The earliest flight from Denver International Airport (DEN) to Sky Harbor International Airport (PHX) usually departs at around 12:00 AM. This flight is operated by Frontier Airlines, providing you with a late-night option to start your journey to Phoenix. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
The most popular departure times for flights from Denver, CO (DEN) to Phoenix, AZ (PHX) are in the early morning, from 6am to 9am. About 27% of passengers prefer this time window. Many major carriers, including Southwest Airlines and Frontier Airlines, offer flights during this window. This timing works well because it allows you to arrive in Phoenix early and enjoy the day.
How long does it take to fly from Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
A nonstop flight from DEN to PHX typically takes around 2 hours, covering approximately 601 miles. Connecting flights on this route usually add 7 hours to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
Business class seats are offered on the DEN to PHX route with American Airlines.First class cabins are available on:

  • Delta Air Lines
  • American Airlines
  • United Airlines

How much is a business class flight from Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
A direct, return business class ticket from Denver (DEN) to Phoenix (PHX) typically costs between $981 - $1,457. A non-stop, one-way business class flight is usually around $392 - $558. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) flight with Expedia?
It's easy to earn miles on a Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Phoenix from Denver Intl. (DEN)?
From Denver Intl. (DEN), you can fly into Sky Harbor Intl. (PHX) to reach Phoenix. Some flights may connect through major hubs like Seattle - Tacoma Intl. (SEA), Portland Intl. (PDX), Palm Springs Intl. (PSP) before reaching Phoenix. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) at the last minute?
Typically, booking a last minute flight from Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) flight and hotel package?
Securing a Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) Phoenix Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
If you booked your Denver, CO (DEN-Denver Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

*Flight schedules are subject to change.

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