Cheap flights from Phoenix Sky Harbor Intl Airport to Denver from £51

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — DEN
23 Jul — 30 Jul1
1 adult

Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Denver Intl are usually found in February or August, booked 87 days in advance, depart on a Thursday or Tuesday and return on a Monday

Cheap flight deals from Sky Harbor Intl to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Sky Harbor Intl (PHX) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 July 2025.

Round-trip from

£89

One-way from

£51

Popular in

June

Cheapest in

February

Average price

£131
Frontier
  • Frontier
  • 1/9-8/9
  • Nonstop
  • 4h 07m total
  • Phoenix to Denver
Southwest
  • Southwest
  • 1/10
  • Nonstop
  • 1h 45m total
  • Phoenix to Denver
Highest demand for flights based on searches. 17% potential increase in price (£18 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£3 potential savings vs. average return price).
Average for round-trip flights in July 2025

Find flight deals from Sky Harbor Intl to Denver

Cheapest flights from Sky Harbor Intl to Denver
Explore the most affordable flight options available from Sky Harbor Intl to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 July 2025.

Mon 1/921:19PHX - DEN
Nonstop2h 04mFrontier
Mon 8/918:22DEN - PHX
Nonstop2h 03mFrontier
Deal found 18/7£89
Tue 26/810:35PHX - DEN
Nonstop1h 50mSouthwest
Tue 2/907:00DEN - PHX
Nonstop1h 55mSouthwest
Deal found 16/7£102
Sat 11/1016:17PHX - DEN
1 stop6h 30mAlaska Airlines
Tue 14/1007:01DEN - PHX
1 stop9h 16mAlaska Airlines
Deal found 16/7£116
Sat 16/809:55PHX - DEN
1 stop3h 55mDelta
Mon 18/818:25DEN - PHX
1 stop6h 17mDelta
Deal found 18/7£147
Thu 27/1107:00PHX - DEN
Nonstop1h 53mUnited Airlines
Sat 29/1100:10DEN - PHX
Nonstop1h 59mUnited Airlines
Deal found 18/7£158

Cheapflights Fare Finder

Customise your flight search to find flights from Sky Harbor Intl 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, Cheapflights users made 858,174 searches. Data last updated 18 July 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

Sky Harbor Intl

Fly to

Denver

Route

Depart

Return

Price

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Mon 1/9

21:19-00:23

Nonstop2h 04m

Denver Intl

Mon 8/9

18:22-19:25

Nonstop2h 03m

£89

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Tue 26/8

10:35-13:25

Nonstop1h 50m

Denver Intl

Tue 2/9

07:00-07:55

Nonstop1h 55m

£102

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Sat 11/10

16:17-23:47

1 stop6h 30m

Denver Intl

Tue 14/10

07:01-15:17

1 stop9h 16m

£116

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Sat 16/8

09:55-14:50

1 stop3h 55m

Denver Intl

Mon 18/8

18:25-23:42

1 stop6h 17m

£147

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Thu 27/11

07:00-08:53

Nonstop1h 53m

Denver Intl

Sat 29/11

00:10-02:09

Nonstop1h 59m

£158

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Wed 1/10

19:45-22:30

Nonstop1h 45m

£51

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Tue 2/12

11:40-18:33

1 stop6h 53m

£52

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Thu 20/11

13:15-15:01

Nonstop1h 46m

£59

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Sun 14/9

17:20-22:44

1 stop4h 24m

£74

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Tue 19/8

09:30-12:21

Nonstop1h 51m

£78

Flights are sorted by cheapest return flights first.

Deals found on 16/7

Showing 1-10 of 13 results
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Best time to book a flight from Sky Harbor Intl to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Sky Harbor Intl with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Phoenix Sky Harbor Intl Airport to Denver

How far ahead should I book a flight from Phoenix Sky Harbor Intl Airport to Denver?

Use this chart to determine the optimal time to book a return flight from Sky Harbor Intl to Denver. Price data was last updated on 11 July 2025.

To ensure you get the cheapest price possible for a flight from Phoenix Sky Harbor Intl Airport to Denver, you should look to book at least 87 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Denver?

Currently, January is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Denver (average of £667). Flying from Phoenix Sky Harbor Intl Airport to Denver in July is currently the most expensive (average of £1,013). 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 PHX to DEN?

Find hourly flight availability from Sky Harbor Intl to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 July 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 78% on flights from Phoenix Sky Harbor Intl Airport to Denver by exploring options for tickets in the morning.

Weekly flight availability from Phoenix Sky Harbor Intl Airport to Denver

Explore weekly flight availability from Sky Harbor Intl to Denver. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 18 July 2025.

The most flights from PHX to DEN are scheduled on a Wednesday (35 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (14 on average).

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated 18 July 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, andDelta from Phoenix Sky Harbor Intl Airport to Denver by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
8.0
Very Good

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

Related info for your journey

Find useful and relevant information for your journey from Sky Harbor Intl to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly into for flights to Denver from Phoenix Sky Harbor Intl?

    For a flight from Phoenix Sky Harbor Intl to Denver, you will be flying into Denver Intl. Denver Intl (DEN) is just 18.5 mi from the center of the city. Denver Intl is the only Denver airport and it handles 28 inbound flights from Phoenix Sky Harbor Intl per day. 0 airlines have flights to Denver Intl from Phoenix Sky Harbor Intl on a regular basis.

  • What are the cheapest airlines flying from Phoenix Sky Harbor Intl Airport to Denver round-trip?

    According to our current data, Frontier (£89), Southwest (£102), and Alaska Airlines (£116) offers the cheapest pricing from Phoenix Sky Harbor Intl Airport to Denver. Frontier is currently priced 22% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Phoenix Sky Harbor Intl Airport to Denver one-way?

    The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as £51. However, be on the lookout for offers from Hawaiian Airlines and American Airlines, as they are both options that can get you from Phoenix Sky Harbor Intl Airport to Denver for a low price.

  • What are the most reliable airlines from Phoenix Sky Harbor Intl Airport to Denver?

    Consider Air Canada (72%), United Airlines (70%) or Frontier (70%) when booking your flight. These represent the most reliable airlines when flying from Phoenix Sky Harbor Intl Airport to Denver.

  • Can I find deals for flights from Sky Harbor Intl to Denver that include hotel bookings?

    Yes. In addition to deals on Sky Harbor Intl to Denver flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Sky Harbor Intl to Denver?

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

  • Can I find deals for business class flights from Sky Harbor Intl to Denver?

    Yes. Cheapflights offers flight deals from Sky Harbor Intl to Denver 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 Phoenix Sky Harbor Intl Airport to Denver?

    Currently, January is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Denver (average of £667). Flying from Phoenix Sky Harbor Intl Airport to Denver in July is currently the most expensive (average of £1,013). 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

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Can Cheapflights notify me if prices for flights from Sky Harbor Intl to Denver become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Denver from Sky Harbor Intl today and book when prices fit your budget.

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