What is the cheapest airline that flies from Phoenix Sky Harbor Intl to Denver Intl?

Frontier is the most popular carrier operating from Phoenix Sky Harbor Intl to Denver Intl

How many flights depart from Phoenix Sky Harbor Intl Airport to Denver on average per day?

11 flights are operational daily from Phoenix Sky Harbor Intl Airport to Denver as of December 2025. The most popular departure time for this route is 4:00PM, with 47% of flights per day taking off in the afternoon.

Which airline has the best punctuality record on Phoenix to Denver flights?

According to our data, Frontier have had the least number of delays on this route over the last 12 months; with about 12% of their flights experiencing any sort of delay.

How many flights depart from Phoenix Sky Harbor Intl Airport to Denver on average per week?

The number of flights available between Phoenix Sky Harbor Intl Airport and Denver is 82 per week as of December 2025. The most frequent departure day is Wed, with 46% of weekly flights leaving on this day.

How often are flights from Phoenix to Denver delayed?

Historically, on average around 16% of flights between Phoenix and Denver have experienced a delay on any given week. The average delay length over the past 12 months has been 125 minutes.

What day of the week experiences the fewest flight delays on this route?

Wednesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

What airlines fly to Denver?

Frontier, Southwest and United Airlines are the top three most popular airlines that fly to Denver from Phoenix Sky Harbor Intl Airport according to our data. Frontier is the first choice among our users, with 69% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 5 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

What is the most punctual flight time for Phoenix to Denver flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

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?

As of December 2025, there are 4 operators available to choose from 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.

$38 Cheap Flights from Phoenix Sky Harbor Intl Airport to Denver in 2025/26

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3:43 pm - 5:39 pm

PHX

DEN

1h 56mnonstop

5:11 pm - 7:19 pm

DEN

PHX

2h 08mnonstop

$67Frontier

Wed, Dec 24 - Wed, Jan 21

7:00 am - 8:55 am

PHX

DEN

1h 55mnonstop

11:27 am - 1:40 pm

DEN

PHX

2h 13mnonstop

$68Frontier

Thu, Jan 1 - Tue, Feb 3

9:16 am - 11:11 am

PHX

DEN

1h 55mnonstop

10:41 am - 12:56 pm

DEN

PHX

2h 15mnonstop

$69Frontier

Thu, Jan 8 - Tue, Jan 13

7:00 am - 8:55 am

PHX

DEN

1h 55mnonstop

6:00 am - 8:12 am

DEN

PHX

2h 12mnonstop

$72Frontier

Wed, Dec 31 - Thu, Jan 29

9:22 pm - 11:19 pm

PHX

DEN

1h 57mnonstop

6:00 am - 8:12 am

DEN

PHX

2h 12mnonstop

$73Frontier

Mon, Jan 12 - Mon, Jan 19

6:25 pm - 8:20 pm

PHX

DEN

1h 55mnonstop

10:29 pm - 12:29 am

DEN

PHX

2h 00mnonstop

$75Frontier

Thu, Jan 8 - Thu, Jan 8

7:00 am - 8:55 am

PHX

DEN

1h 55mnonstop

10:29 pm - 12:29 am

DEN

PHX

2h 00mnonstop

$77Frontier

Thu, Dec 25 - Thu, Jan 1

9:31 am - 11:26 am

PHX

DEN

1h 55mnonstop

10:29 pm - 12:29 am

DEN

PHX

2h 00mnonstop

$78Frontier

Thu, Dec 25 - Thu, Dec 25

7:00 am - 8:55 am

PHX

DEN

1h 55mnonstop

10:29 pm - 12:29 am

DEN

PHX

2h 00mnonstop

$79Frontier

Thu, Jan 1 - Thu, Jan 8

4:41 pm - 6:37 pm

PHX

DEN

1h 56mnonstop

10:29 pm - 12:29 am

DEN

PHX

2h 00mnonstop

$82Frontier

Wed, Jan 7 - Fri, Jan 9

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

Jan 1

PHX3:43 pmPhoenix Sky Harbor Intl

1h 56m

DEN5:39 pmDenver Intl

Feb 3

DEN11:27 amDenver Intl

2h 13m

PHX1:40 pmPhoenix Sky Harbor Intl

$68

Find similar

Frontier

Jan 8

PHX9:16 amPhoenix Sky Harbor Intl

1h 55m

DEN11:11 amDenver Intl

Jan 13

DEN10:41 amDenver Intl

2h 15m

PHX12:56 pmPhoenix Sky Harbor Intl

$69

Find similar

Frontier

Dec 31

PHX7:00 amPhoenix Sky Harbor Intl

1h 55m

DEN8:55 amDenver Intl

Feb 1

DEN6:00 amDenver Intl

2h 12m

PHX8:12 amPhoenix Sky Harbor Intl

$72

Find similar

momondo Fare Finder

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 12/24

3:43 pm-5:39 pm

Nonstop1h 56m

Denver Intl

Wed 1/21

5:11 pm-7:19 pm

Nonstop2h 08m

$67

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Thu 1/1

7:00 am-8:55 am

Nonstop1h 55m

Denver Intl

Tue 2/3

11:27 am-1:40 pm

Nonstop2h 13m

$68

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Thu 1/8

9:16 am-11:11 am

Nonstop1h 55m

Denver Intl

Tue 1/13

10:41 am-12:56 pm

Nonstop2h 15m

$69

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Wed 12/31

7:00 am-8:55 am

Nonstop1h 55m

Denver Intl

Thu 1/29

6:00 am-8:12 am

Nonstop2h 12m

$72

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Mon 1/12

9:22 pm-11:19 pm

Nonstop1h 57m

Denver Intl

Mon 1/19

6:00 am-8:12 am

Nonstop2h 12m

$73

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Thu 1/8

6:25 pm-8:20 pm

Nonstop1h 55m

Denver Intl

Thu 1/8

10:29 pm-12:29 am

Nonstop2h 00m

$75

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Thu 12/25

7:00 am-8:55 am

Nonstop1h 55m

Denver Intl

Thu 1/1

10:29 pm-12:29 am

Nonstop2h 00m

$77

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Thu 12/25

9:31 am-11:26 am

Nonstop1h 55m

Denver Intl

Thu 12/25

10:29 pm-12:29 am

Nonstop2h 00m

$78

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Thu 1/1

7:00 am-8:55 am

Nonstop1h 55m

Denver Intl

Thu 1/8

10:29 pm-12:29 am

Nonstop2h 00m

$79

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Wed 1/7

4:41 pm-6:37 pm

Nonstop1h 56m

Denver Intl

Fri 1/9

10:29 pm-12:29 am

Nonstop2h 00m

$82

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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

Prices

Airlines

Delays

Other information

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 $103, 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 $123.

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 Friday when prices can be found for as low as $235. 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 $311.

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 $542.

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 $166 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 $136 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 December 2025, prices for Phoenix Sky Harbor Intl Airport to Denver flights are approximately 4% 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	$108
Fastest flight time	1h 44m
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 $108. The best round-trip flight deal from Phoenix Sky Harbor Intl Airport to Denver found on momondo in the last 72 hours is $155.

The fastest flight from Phoenix Sky Harbor Intl Airport to Denver takes 1h 44m

Direct flights go from Phoenix Sky Harbor Intl Airport to Denver every day.

There is 1 airport in Denver. From Phoenix Sky Harbor Intl Airport there are direct flights to Denver Intl (DEN).

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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 44m 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?
As of December 2025, there are 4 operators available to choose from 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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Phoenix Sky Harbor Intl Airport to Denver is Airbus A321neo (15.32% of total bookings). The next most popular plane models are Boeing 737-800 (13.25%), Boeing 737 MAX 8 (11.60%), and Airbus A320neo (10.09%).
What is the most popular airline from Phoenix Sky Harbor Intl Airport to Denver?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Phoenix Sky Harbor Intl Airport to Denver is Frontier (73% of total bookings). The next most popular airlines are Southwest (9%), United Airlines (9%), and American Airlines (9%).

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
Frontier	PriceFrom $65	Free Cancellation	Rating 5.8 3,081 reviews	Search Frontier flights
American Airlines	PriceFrom $137	Free Cancellation	Rating 7.2 11,055 reviews	Search American Airlines flights
United Airlines	PriceFrom $138	Free Cancellation	Rating 7.4 9,093 reviews	Search United Airlines flights
Southwest	PriceFrom $153	Free Cancellation	Rating 7.9 4,250 reviews	Search Southwest 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 19 flights/week on average for this route. A good Southwest flight deal for Phoenix Sky Harbor Intl Airport to Denver starts from $153 round-trip, up to an average price of $244. Our users have rated Southwest at 7.9/10.
United Airlines Flights From Phoenix Sky Harbor Intl Airport to Denver
$138 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 $271, however, with flight time and availability significantly affecting the price. United Airlines (7.4/10 from 9,093 user reviews) flies into Denver from Phoenix Sky Harbor Intl Airport 28 times in an average week so prices can vary.

Breckenridge

Estes Park

Black Hawk

Aurora

Fort Collins

Keystone

Cripple Creek

Manitou Springs

Longmont

Boulder

Greeley

Lakewood

Thornton

Westminster

Winter Park

Copper Mountain

Silverthorne

Frisco

Centennial

Grand Lake

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.

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Cheap flights from Phoenix Sky Harbor Intl Airport to Denver from $38

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Frontier flights from Phoenix Sky Harbor Intl Airport to Denver

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Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Denver that are best for you.

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

What is the cheapest month to fly to Denver?

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 Friday when prices can be found for as low as $235. 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 $311.

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 $542.

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?

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 December 2025, prices for Phoenix Sky Harbor Intl Airport to Denver flights are approximately 4% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Phoenix Sky Harbor Intl to Denver Intl?

Frontier is the most popular carrier operating from Phoenix Sky Harbor Intl to Denver Intl

What airlines fly to Denver?

How often are flights from Phoenix to Denver delayed?

Historically, on average around 16% of flights between Phoenix and Denver have experienced a delay on any given week. The average delay length over the past 12 months has been 125 minutes.

What is the most punctual flight time for Phoenix to Denver flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Wednesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Phoenix to Denver flights?

According to our data, Frontier have had the least number of delays on this route over the last 12 months; with about 12% of their flights experiencing any sort of delay.

How many flights depart from Phoenix Sky Harbor Intl Airport to Denver on average per day?

11 flights are operational daily from Phoenix Sky Harbor Intl Airport to Denver as of December 2025. The most popular departure time for this route is 4:00PM, with 47% of flights per day taking off in the afternoon.

How many flights depart from Phoenix Sky Harbor Intl Airport to Denver on average per week?

The number of flights available between Phoenix Sky Harbor Intl Airport and Denver is 82 per week as of December 2025. The most frequent departure day is Wed, with 46% of weekly flights leaving on this day.

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

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

Fastest flight time

Direct flights

Airports in Denver

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

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

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?

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

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

Southwest Flights From Phoenix Sky Harbor Intl Airport to Denver

United Airlines Flights From Phoenix Sky Harbor Intl Airport to Denver

Traveling to a place near Denver?

Why use momondo?

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

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

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

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

An easier way to manage your Denver trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

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