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Cheap flights from Phoenix Sky Harbor Intl Airport to Denver from $56

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Phoenix Sky Harbor Intl Airport to Denver departing on 9/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Phoenix Sky Harbor Intl Airport to Denver

Cheap round-trip flights

Frontier Logo
8:00 am - 11:00 amPHX-DEN
2h 00mnonstop
Frontier Logo
6:30 am - 7:32 amDEN-PHX
2h 02mnonstop
$85Frontier
Find Deal
Wed, Oct 1 - Sun, Oct 5
Frontier Logo
9:59 pm - 12:56 amPHX-DEN
1h 57mnonstop
Frontier Logo
10:10 am - 11:14 amDEN-PHX
2h 04mnonstop
$86Frontier
Find Deal
Mon, Oct 13 - Wed, Oct 22
Frontier Logo
5:07 pm - 8:03 pmPHX-DEN
1h 56mnonstop
Frontier Logo
8:55 pm - 9:55 pmDEN-PHX
2h 00mnonstop
$87Frontier
Find Deal
Sat, Oct 4 - Tue, Oct 7
Frontier Logo
7:21 am - 10:18 amPHX-DEN
1h 57mnonstop
Frontier Logo
9:19 pm - 10:16 pmDEN-PHX
1h 57mnonstop
$88Frontier
Find Deal
Thu, Oct 16 - Mon, Oct 20
Frontier Logo
8:43 pm - 11:41 pmPHX-DEN
1h 58mnonstop
Frontier Logo
5:20 am - 7:24 amDEN-PHX
2h 04mnonstop
$89Frontier
Find Deal
Fri, Oct 31 - Sun, Nov 2
Frontier Logo
5:07 pm - 8:03 pmPHX-DEN
1h 56mnonstop
Frontier Logo
10:00 am - 11:59 amDEN-PHX
26h 59m1 stop
$90Frontier
Find Deal
Sat, Oct 4 - Tue, Oct 7
Frontier Logo
5:07 pm - 8:03 pmPHX-DEN
1h 56mnonstop
Frontier Logo
12:36 am - 1:17 pmDEN-PHX
13h 41m1 stop
$91Frontier
Find Deal
Sat, Oct 4 - Mon, Oct 6
Frontier Logo
9:59 pm - 12:56 amPHX-DEN
1h 57mnonstop
Frontier Logo
6:55 am - 7:59 amDEN-PHX
2h 04mnonstop
$92Frontier
Find Deal
Fri, Oct 17 - Mon, Oct 20
Frontier Logo
8:00 am - 11:00 amPHX-DEN
2h 00mnonstop
Frontier Logo
7:00 am - 8:00 amDEN-PHX
2h 00mnonstop
$93Frontier
Find Deal
Tue, Sep 30 - Mon, Oct 6
Frontier Logo
7:59 pm - 10:55 pmPHX-DEN
1h 56mnonstop
Frontier Logo
8:55 pm - 9:55 pmDEN-PHX
2h 00mnonstop
$94Frontier
Find Deal
Mon, Oct 13 - Wed, Oct 15

Frontier flights from Phoenix Sky Harbor Intl Airport to Denver

Our best Frontier deals on Phoenix Sky Harbor Intl Airport to Denver flight tickets
Frontier
Oct 1
PHX8:00 amPhoenix Sky Harbor Intl
2h 00m
DEN11:00 amDenver Intl
Oct 5
DEN6:30 amDenver Intl
2h 02m
PHX7:32 amPhoenix Sky Harbor Intl
$85
Find similar
Frontier
Oct 13
PHX9:59 pmPhoenix Sky Harbor Intl
1h 57m
DEN12:56 amDenver Intl
Oct 22
DEN10:10 amDenver Intl
2h 04m
PHX11:14 amPhoenix Sky Harbor Intl
$86
Find similar
Frontier
Oct 4
PHX5:07 pmPhoenix Sky Harbor Intl
1h 56m
DEN8:03 pmDenver Intl
Oct 7
DEN8:55 pmDenver Intl
2h 00m
PHX9:55 pmPhoenix Sky Harbor Intl
$87
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Phoenix Sky Harbor Intl Airport 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, momondo users made 832,500 searches. Data last updated September 19, 2025.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Wed 10/1

8:00 am-11:00 am

Nonstop2h 00m

Denver Intl

Sun 10/5

6:30 am-7:32 am

Nonstop2h 02m

$85

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Mon 10/13

9:59 pm-12:56 am

Nonstop1h 57m

Denver Intl

Wed 10/22

10:10 am-11:14 am

Nonstop2h 04m

$86

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Sat 10/4

5:07 pm-8:03 pm

Nonstop1h 56m

Denver Intl

Tue 10/7

8:55 pm-9:55 pm

Nonstop2h 00m

$87

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Thu 10/16

7:21 am-10:18 am

Nonstop1h 57m

Denver Intl

Mon 10/20

9:19 pm-10:16 pm

Nonstop1h 57m

$88

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Fri 10/31

8:43 pm-11:41 pm

Nonstop1h 58m

Denver Intl

Sun 11/2

5:20 am-7:24 am

Nonstop2h 04m

$89

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Sat 10/4

5:07 pm-8:03 pm

Nonstop1h 56m

Denver Intl

Tue 10/7

10:00 am-11:59 am

1 stop26h 59m

$90

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Sat 10/4

5:07 pm-8:03 pm

Nonstop1h 56m

Denver Intl

Mon 10/6

12:36 am-1:17 pm

1 stop13h 41m

$91

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Fri 10/17

9:59 pm-12:56 am

Nonstop1h 57m

Denver Intl

Mon 10/20

6:55 am-7:59 am

Nonstop2h 04m

$92

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Tue 9/30

8:00 am-11:00 am

Nonstop2h 00m

Denver Intl

Mon 10/6

7:00 am-8:00 am

Nonstop2h 00m

$93

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Mon 10/13

7:59 pm-10:55 pm

Nonstop1h 56m

Denver Intl

Wed 10/15

8:55 pm-9:55 pm

Nonstop2h 00m

$94

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Denver from

How to get the cheapest flight ticket from Phoenix Sky Harbor Intl Airport to Denver

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Phoenix Sky Harbor Intl Airport and Denver?

What is the cheapest month to fly to Denver?

The cheapest month to fly to Denver from Phoenix Sky Harbor Intl Airport is in February. Flight prices, which tend to average around $104, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in February, then you should wait until January to fly from Phoenix Sky Harbor Intl Airport, when ticket prices are also cheap, with an average price of $132.

What is the cheapest day to depart on your flight to Denver?

The cheapest day to depart on your flight to Denver is on a Thursday when prices can be found for as low as $234. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Monday, with ticket prices averaging around $315.

What is the cheapest time of day to depart on your flight to Denver?

The cheapest time of day to fly to Denver is in the evening when flights can be purchased for as low as $194. Flights at noon are often more expensive with an average ticket price of $496.

What is the cheapest Phoenix Sky Harbor Intl to Denver Intl flight route?

Fly from Phoenix Sky Harbor Intl to Denver Intl for the best Phoenix Sky Harbor Intl - Denver Intl flight prices

How far in advance should I book a flight to Denver?

You are more likely to see cheaper flights to Denver from Phoenix Sky Harbor Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $162 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Phoenix Sky Harbor Intl Airport for as low as $129 on momondo.

What cabin class options are available on Phoenix Sky Harbor Intl to Denver Intl flights?

There are 4 cabin classes available to choose from on Phoenix Sky Harbor Intl to Denver Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Phoenix Sky Harbor Intl Airport to Denver flight prices changed over time?

As of September 2025, prices for Phoenix Sky Harbor Intl Airport to Denver flights are approximately 71% more expensive when compared to flights at the same time last year.

When to book flights from Phoenix Sky Harbor Intl Airport to Denver

Are you open to changing your travel dates? Check out the ideal times to fly from Phoenix Sky Harbor Intl Airport to Denver according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Phoenix Sky Harbor Intl Airport to Denver (PHX to DEN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Phoenix Sky Harbor Intl Airport to Denver

Best Price Found

$109

Fastest flight time

1h 45m

Direct flights

Every day

Airports in Denver

1 airport
The best one-way flight to Denver from Phoenix Sky Harbor Intl Airport in the past 72 hours is $109. The best round-trip flight deal from Phoenix Sky Harbor Intl Airport to Denver found on momondo in the last 72 hours is $154.
The fastest flight from Phoenix Sky Harbor Intl Airport to Denver takes 1h 45m
Direct flights go from Phoenix Sky Harbor Intl Airport to Denver every day.
There is 1 airport near Denver: Denver Intl (DEN)
Search flight deals

  • How far is Phoenix Sky Harbor Intl to Denver Intl by plane?

    There are 583.2 mi between Phoenix Sky Harbor Intl and Denver Intl. Typically, this will take 1h 54m by plane in normal conditions.

  • When did momondo last update prices for flights from Phoenix Sky Harbor Intl Airport to Denver Intl Airport?

    Prices for flights from Phoenix Sky Harbor Intl Airport to Denver Intl Airport were last updated today.

  • How many operators does momondo search for flights from Phoenix Sky Harbor Intl Airport to Denver Intl Airport?

  • How old do you have to be to fly from Phoenix Sky Harbor Intl Airport to Denver Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Phoenix Sky Harbor Intl Airport to Denver Intl Airport.

  • What documentation or ID do you need to fly to Denver Intl Airport?

    The travel and health documents you'll need for your trip to Denver Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Denver Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Phoenix Sky Harbor Intl Airport to Denver?

  • What is the most popular airline from Phoenix Sky Harbor Intl Airport to Denver?

Best airlines flying from Phoenix Sky Harbor Intl Airport to Denver

Compare and see reviews for airlines that fly from Phoenix Sky Harbor Intl Airport to Denver with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $64Free CancellationRating
5.8
3,171 reviews
Search Frontier flights
American AirlinesPriceFrom $137Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $146Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
United AirlinesPriceFrom $156Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights

  • Southwest Flights From Phoenix Sky Harbor Intl Airport to Denver

    Southwest is one of the most popular airlines flying from Phoenix Sky Harbor Intl Airport to Denver, operating 62 flights/week on average for this route. A good Southwest flight deal for Phoenix Sky Harbor Intl Airport to Denver starts from $146 round-trip, up to an average price of $234. Our users have rated Southwest at 8.0/10.

  • United Airlines Flights From Phoenix Sky Harbor Intl Airport to Denver

    $156 is the best United Airlines flight deal from Phoenix Sky Harbor Intl Airport to Denver found on momondo over the last 72 hours. The average United Airlines ticket price found was closer to $279, however, with flight time and availability significantly affecting the price. United Airlines (7.4/10 from 8,926 user reviews) flies into Denver from Phoenix Sky Harbor Intl Airport 24 times in an average week so prices can vary.

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Estes Park
Breckenridge
Black Hawk
Aurora
Fort Collins
Keystone
Cripple Creek
Boulder
Manitou Springs
Longmont
Lakewood
Greeley
Thornton
Westminster
Winter Park
Copper Mountain
Frisco
Grand Lake
Silverthorne
Central City

Why use momondo?

Why should I use momondo to find a flight deal from Phoenix to Denver?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Denver from Phoenix.

Can I find flights from Phoenix to Denver with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Phoenix to Denver flights to just show those with flexible booking policies.

How can momondo help me find flights from Phoenix to Denver?

Once you have performed a search for Phoenix to Denver flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Phoenix to Denver right now. Can momondo alert me if prices change?

Price alerts on flights to Denver from Phoenix are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Denver trip

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