59 € Cheap Flights from Phoenix to Denver International

Compare Phoenix to Denver International flight deals

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Flight deals from Phoenix to Denver International Airport

Looking for a cheap last-minute deal or the best return flight from Phoenix to Denver International Airport? If you want to travel next month, return fares start from 59 €. Find the lowest prices on one-way and return tickets right here.

Denver.59 € per passenger.Departing Sat, 18 Apr, returning Tue, 21 Apr.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Phoenix Sky Harbor on Sat, 18 Apr, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Tue, 21 Apr, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 59 €, select.

Denver.59 € per passenger.Departing Mon, 1 Jun, returning Wed, 3 Jun.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Phoenix Sky Harbor on Mon, 1 Jun, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Wed, 3 Jun, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 59 €, select.

Denver.59 € per passenger.Departing Sat, 23 May, returning Tue, 26 May.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Phoenix Sky Harbor on Sat, 23 May, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Tue, 26 May, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 59 €, select.

Denver.73 € per passenger.Departing Thu, 23 Apr, returning Mon, 18 May.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Phoenix Sky Harbor on Thu, 23 Apr, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Mon, 18 May, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 73 €, select.

Denver.97 € per passenger.Departing Fri, 29 May, returning Mon, 1 Jun.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Phoenix Sky Harbor on Fri, 29 May, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Mon, 1 Jun, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 97 €, select.

Denver.153 € per passenger.Departing Sun, 12 Apr, returning Wed, 24 Jun.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Phoenix Sky Harbor on Sun, 12 Apr, arriving in Denver International.Inbound indirect flight with Frontier Airlines, departs from Denver International on Wed, 24 Jun, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 153 €, select.

Denver.155 € per passenger.Departing Wed, 15 Jul, returning Mon, 20 Jul.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Phoenix Sky Harbor on Wed, 15 Jul, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Mon, 20 Jul, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 155 €, select.

Denver.155 € per passenger.Departing Tue, 25 Aug, returning Wed, 26 Aug.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Phoenix Sky Harbor on Tue, 25 Aug, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Wed, 26 Aug, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 155 €, select.

Denver.155 € per passenger.Departing Thu, 3 Sep, returning Sat, 5 Sep.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Phoenix Sky Harbor on Thu, 3 Sep, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sat, 5 Sep, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 155 €, select.

Denver.155 € per passenger.Departing Fri, 26 Jun, returning Sat, 4 Jul.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Phoenix Sky Harbor on Fri, 26 Jun, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sat, 4 Jul, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 155 €, select.

Denver.162 € per passenger.Departing Sun, 30 Aug, returning Tue, 1 Sep.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Phoenix Sky Harbor on Sun, 30 Aug, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Tue, 1 Sep, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 162 €, select.

Denver.191 € per passenger.Departing Tue, 31 Mar, returning Thu, 2 Apr.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Phoenix Sky Harbor on Tue, 31 Mar, arriving in Denver International.Inbound indirect flight with Frontier Airlines, departs from Denver International on Thu, 2 Apr, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 191 €, select.

Denver.192 € per passenger.Departing Mon, 30 Mar, returning Tue, 31 Mar.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Phoenix Sky Harbor on Mon, 30 Mar, arriving in Denver International.Inbound indirect flight with Frontier Airlines, departs from Denver International on Tue, 31 Mar, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 192 €, select.

Denver.251 € per passenger.Departing Tue, 27 Oct, returning Wed, 28 Oct.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Phoenix Sky Harbor on Tue, 27 Oct, arriving in Denver International.Inbound direct flight with Southwest Airlines departs from Denver International on Wed, 28 Oct, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 251 €, select.

Denver.251 € per passenger.Departing Sat, 21 Nov, returning Sat, 21 Nov.Return flight with United.Outbound direct flight with United departs from Phoenix Sky Harbor on Sat, 21 Nov, arriving in Denver International.Inbound direct flight with United departs from Denver International on Sat, 21 Nov, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 251 €, select.

Denver.275 € per passenger.Departing Tue, 15 Dec, returning Tue, 5 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Phoenix Sky Harbor on Tue, 15 Dec, arriving in Denver International.Inbound indirect flight with Delta, departs from Denver International on Tue, 5 Jan, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 275 €, select.

Find the cheapest month to fly from Phoenix to Denver International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Phoenix to Denver International flights are currently cheapest in April.

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Direct flights from Phoenix to Denver International

Phoenix to Denver International: Alternative routes

Compare routes from Phoenix to Denver below. You may find an airport to fly into that's cheaper, faster, or easier than Denver International.

Phoenix to Denver: Flight information

The things to know before you go.

Cheapest flight found	59 €
Cheapest month to fly	April
Average flight time	1 hr, 52 mins
Most popular airline	Southwest Airlines
Average flights per week	398

Finding cheap flights from Phoenix to Denver International: Frequently asked questions

How much are return flights from Phoenix to Denver International?

The best price we found for a return flight from Phoenix to Denver International is 59 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Phoenix to Denver International?

1 hour and 52 minutes is the average flight time from Phoenix to Denver International.

Which airlines fly direct from Phoenix to Denver International?

Southwest Airlines, United and American Airlines fly direct from Phoenix to Denver International.

How many flights are there a week from Phoenix to Denver International?

As of March 2026, there are 398 flights per week flying from Phoenix to Denver International.

When is the cheapest time to fly from Phoenix to Denver International?

The cheapest month to fly from Phoenix to Denver International is usually April.

Which upcoming date is cheapest to fly from Phoenix to Denver International Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Phoenix to Denver International Airport on Saturday, 18 April 2026.

Can I get a direct flight from Phoenix to Denver International Airport?

Yes – the average flight time is 1 hour and 52 minutes.

How can I find the best flight deal to Denver International?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Denver International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Denver?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Denver is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Phoenix to Denver International with?

The cheapest airline that flies to Denver International is Frontier Airlines .

Flying from Phoenix to Denver International Airport (DEN): What you need to know

Phoenix's main airport is Phoenix Sky Harbour International Airport (PHX). Check out your options for leaving from here when booking flights from Phoenix to Denver International Airport (DEN).
Expect to be in the air for 1 hour 50 minutes. That's the average journey time for a direct Phoenix to Denver International Airport flight.
Denver (where Denver International Airport is located) and Phoenix share the UTC-7 timezone. You can plan your trip without factoring in timezone differences.
With 139 direct weekly flights between the two airports, Phoenix Sky Harbour International Airport (PHX) to Denver International Airport (DEN) is the most popular route. United Airlines operates the earliest flight at 5am. If you prefer to get more out of your day before flying, the last departure from PHX to DEN is with Southwest Airlines at 10:55pm.
Leave plenty of time to make your flight from Phoenix to DEN. As a general rule, turn up at least two hours before international departures and an hour ahead for domestic flights.
Peak months like March or high seasons such as spring break and Christmas will mean bigger lines at check-in and security. If you're travelling then, play it safe and get to the airport even earlier. Arriving two hours before domestic flights and up four hours ahead of an international flight is a smart move.

Airports in Phoenix

Phoenix Sky Harbour International Airport (PHX)

You can find a direct flight from Phoenix to Denver International Airport (DEN) departing from Phoenix Sky Harbour International Airport (PHX).
You'll have your choice of carriers that offer direct flights from Phoenix to Denver International Airport leaving from PHX. Head off on your trip with any of these:
Most travellers prefer to book seats with Southwest Airlines between PHX and DEN.
Among carriers operating on this route, United has the highest rate of on-time arrivals.
Located around 5 kilometres from the centre of Phoenix, PHX can be reached in about 10 minutes by car, depending on traffic. The journey on public transport is roughly 25 minutes.
Searching for a comfortable hotel close to Phoenix Sky Harbour International Airport? If you're catching an early flight from Phoenix to Denver International Airport, these accommodation options will have you sleeping moments from your departure gate:
80% of flights departing from Phoenix Sky Harbour International Airport land at their destination according to schedule. Given its strong on-time performance, you're unlikely to face delays when setting off from PHX.
PHX is located at 3400 Sky Harbour Boulevard.

Phoenix-Mesa Gateway Airport (AZA)

AZA is about 32 kilometres from central Phoenix. It'll take 30 minutes or so to get to the airport driving from the city centre. Public transport takes roughly 1 hour 15 minutes.
Catching the earliest flight? Think about checking in to one of these accommodation options near Phoenix-Mesa Gateway Airport the day before your Phoenix to DEN flight:
Flights from Phoenix-Mesa Gateway Airport have a reputation for punctuality, with 82% of them arriving right on cue.
The street address for AZA is 6033 S. Sossaman Rd..

About Denver International Airport (DEN)

Get off your flight from Phoenix to Denver International Airport and be relaxing in your hotel bed soon after. If you want a convenient option a short drive from DEN, check out Baymont by Wyndham Denver International Airport.
Get the best deal by reserving your ride around one week before your Phoenix to Denver International Airport flight.
DEN is located at 8500 Pena Boulevard.

Getting from Denver International Airport (DEN) to central Denver

Denver International Airport is around 40 kilometres from central Denver. It takes around 35 minutes or so to get to the city by car.
When travelling on public transport, expect a journey time of about 35 minutes.

How to find the cheapest flights from Phoenix to Denver International Airport (DEN)

The cheapest price we've found for a one-way ticket from Phoenix to Denver International Airport is 24 €. For a return flight on this route, the best price is 59 €. Depending on when you book and the availability, these fares could change.
Booking ahead of time is often the key to finding a cheap flight from Phoenix to DEN. Fares tend to rise as seats fill up, so the closer your departure date, the more expensive your ticket may be.
Affordable Phoenix to Denver International Airport tickets are easier to find if you're not locked into specific dates. Use the 'Whole month' search function to compare fares across the month and then pick the cheapest day.
You don't need to check every day to find out if prices have dropped when you create a Price Alert. We'll notify you the moment a lower fare pops up on plane tickets from Phoenix to DEN.
Find a cheap flight from Phoenix to Denver International Airport by using the search filters. Choose your preferred duration, departure time and airlines, then sort the results by 'Cheapest' for the best deals.

The best time to fly from Phoenix to Denver International Airport (DEN)

July is the most popular month for flights from Phoenix to Denver International Airport (DEN). Visit Denver in December for a quieter experience.
The warmest month in Denver is July, with temperatures ranging between 14ºC (57ºF) and 32ºC (90ºF). Lock in your Phoenix to DEN plane ticket then if that's your idea of comfortable weather.
January has temperatures of between -9ºC (16ºF) and 7ºC (45ºF). Look for cheap tickets from Phoenix to Denver International Airport around that time if you'd rather travel in cooler conditions.

More about Denver

When it comes to searching for somewhere to lay your head, you'll find the best places to stay in Denver right here. Check out these hotels once you've locked in your flight from Phoenix to Denver International Airport:
Your trip to Denver won't be complete without checking out the sights. Major attractions that are worth your time include Denver Art Museum, Meow Wolf Denver's Convergence Station and Ballpark.

Explore more of the United States

Colorado Springs is just one of the many cities in the United States waiting to be explored once you've seen Denver. Around 113 kilometres away to the south, popular attractions include Garden of the Gods, Pikes Peak Region Attractions and Red Rock Canyon.
Around 177 kilometres south of Denver, Pueblo is another favourite stop in the United States. No visit is complete without checking out Rosemount Museum, Cathedral of the Sacred Heart and Sangre de Cristo Arts & Conference Centre.