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Cheap flights from Philadelphia to Denver from C$ 146

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 28/2. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
26 Feb — 5 Mar1
1 adult

Cheap flight deals from Philadelphia to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) 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 21 February 2025.

Round-trip from

C$ 291

One-way from

C$ 146

Popular in

December

Cheapest in

May

Average price

C$ 470
United Airlines
  • United Airlines
  • 29/4-1/5
  • Nonstop
  • 7h 53m total
  • Philadelphia to Denver
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Sun Country Air
  • Sun Country Air
  • 28/2
  • 1 total stop
  • 28h 46m total
  • Philadelphia to Denver
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 64 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
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Find flight deals from Philadelphia to Denver

Cheapest flights from Philadelphia to Denver
Explore the most affordable flight options available from Philadelphia to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Mon 4/812:05 p.m.PHL - DEN
1 stop8h 10mSun Country Air
Sat 9/810:20 a.m.DEN - PHL
1 stop22h 50mSun Country Air
Deal found 20/2C$ 334
Sat 22/36:00 a.m.PHL - DEN
1 stop8h 08mJetBlue
Wed 26/311:59 p.m.DEN - PHL
1 stop7h 37mJetBlue
Deal found 20/2C$ 335
Wed 26/36:00 a.m.PHL - DEN
1 stop7h 15mDelta
Wed 26/34:20 p.m.DEN - PHL
1 stop5h 23mDelta
Deal found 20/2C$ 365
Sat 26/46:25 a.m.PHL - DEN
1 stop8h 30mSouthwest
Tue 29/411:00 a.m.DEN - PHL
Nonstop3h 35mSouthwest
Deal found 20/2C$ 384
Tue 1/43:45 p.m.PHL - DEN
Nonstop4h 17mUnited Airlines
Thu 3/411:59 p.m.DEN - PHL
Nonstop3h 36mUnited Airlines
Deal found 20/2C$ 392
Mon 31/37:20 p.m.PHL - DEN
Nonstop4h 28mAmerican Airlines
Thu 3/47:13 a.m.DEN - PHL
Nonstop3h 29mAmerican Airlines
Deal found 20/2C$ 483
Wed 23/46:53 p.m.PHL - DEN
2 stops28h 22mAlaska Airlines
Mon 28/46:37 p.m.DEN - PHL
2 stops21h 16mAlaska Airlines
Deal found 20/2C$ 700

Find flights from Philadelphia to Denver within your budget

Customize your flight search to find flights from Philadelphia 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 629,999 searches. Data last updated 21 February 2025.

Fly from

Philadelphia

Fly to

Denver

Route

Depart

Return

Price

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Mon 4/8

12:05 p.m.-6:15 p.m.

1 stop8h 10m

Denver Intl

Sat 9/8

10:20 a.m.-11:10 a.m.

1 stop22h 50m

C$ 334

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 22/3

6:00 a.m.-12:08 p.m.

1 stop8h 08m

Denver Intl

Wed 26/3

11:59 p.m.-9:36 a.m.

1 stop7h 37m

C$ 335

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 26/3

6:00 a.m.-11:15 a.m.

1 stop7h 15m

Denver Intl

Wed 26/3

4:20 p.m.-11:43 p.m.

1 stop5h 23m

C$ 365

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 26/4

6:25 a.m.-12:55 p.m.

1 stop8h 30m

Denver Intl

Tue 29/4

11:00 a.m.-4:35 p.m.

Nonstop3h 35m

C$ 384

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Tue 1/4

3:45 p.m.-6:02 p.m.

Nonstop4h 17m

Denver Intl

Thu 3/4

11:59 p.m.-5:35 a.m.

Nonstop3h 36m

C$ 392

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Mon 31/3

7:20 p.m.-9:48 p.m.

Nonstop4h 28m

Denver Intl

Thu 3/4

7:13 a.m.-12:42 p.m.

Nonstop3h 29m

C$ 483

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 23/4

6:53 p.m.-9:15 p.m.

2 stops28h 22m

Denver Intl

Mon 28/4

6:37 p.m.-5:53 p.m.

2 stops21h 16m

C$ 700

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Fri 28/2

6:15 p.m.-9:01 p.m.

1 stop28h 46m

C$ 146

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sun 25/5

6:00 a.m.-12:34 p.m.

1 stop8h 34m

C$ 149

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 26/3

3:13 p.m.-5:42 p.m.

Nonstop4h 29m

C$ 151

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/2

Showing 1-10 of 13 results
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Best time to book a flight from Philadelphia to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Philadelphia with our price prediction graph.
Estimated round-trip 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.

Travel insights for flights from Philadelphia to Denver

Get recent, data-driven insights about flights from Philadelphia to Denver including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Philadelphia to Denver?

Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to Denver. Price data was last updated on 14 February 2025.

To ensure you get the cheapest price possible for a flight from Philadelphia to Denver, you should look to book at least 56 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 Philadelphia to Denver?

Currently, August is the cheapest month in which you can book a flight from Philadelphia to Denver (average of C$ 320). Flying from Philadelphia to Denver in December is currently the most expensive (average of C$ 484). 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 PHL to DEN?

Find hourly flight availability from Philadelphia 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 21 February 2025.

When flying from Philadelphia to Denver, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 77% versus a flight in the morning.

Weekly flight availability from Philadelphia to Denver

Explore weekly flight availability from Philadelphia 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 21 February 2025.

The most flights from PHL to DEN are scheduled on a Thursday (11 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in Denver by month

Plan your trip to Denver by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Denver ranges from 13.0 - 58.0 mm per month. May is typically the wettest month, when rainfall can reach 58.0 mm. January is typically the driest time to visit Denver when rainfall is around 13.0 mm.

Temperature in Denver by month

Plan your trip to Denver by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Denver, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).

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 21 February 2025.
To help decide which airline to fly from Philadelphia to Denver, see what other customers have to say about Southwest, Alaska Airlines and Delta. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews
Check prices

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews
Check prices

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,692 reviews
Southwest
8.1
Very good
4,411 reviews
Check prices

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,220 reviews
Southwest
8.1
Very good
4,411 reviews
Check prices

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

JetBlue
7.4
Good
3,070 reviews
Southwest
8.1
Very good
4,411 reviews
Check prices

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,766 reviews
Southwest
8.1
Very good
4,411 reviews
Check prices

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Philadelphia to Denver flight route?

    This flight path from Philadelphia to Denver Intl was viewed by 15 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines flying from Philadelphia to Denver round-trip?

    According to our current data, United Airlines (C$ 291), JetBlue (C$ 297), and Southwest (C$ 332) offers the cheapest pricing from Philadelphia to Denver. United Airlines is currently priced 29% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Philadelphia to Denver one-way?

    For one-way options, check prices for Sun Country Air. According to our data, you can fly for as low as C$ 146. Users have also found prices from C$ 149 and C$ 151 on JetBlue and United Airlines, respectively.

  • What are the most reliable airlines from Philadelphia to Denver?

    No one likes to see their flight delayed. When booking a flight from Philadelphia to Denver consider choosing Frontier (86%), Air Canada (81%) or Qatar Airways (72%) as they are the most reliable in getting you off to your destination on time.

  • Can I find deals for flights from Philadelphia to Denver that include hotel bookings?

    Yes. In addition to deals on Philadelphia to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to Denver?

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

  • Can I find deals for business class flights from Philadelphia to Denver?

    Yes. Cheapflights offers flight deals from Philadelphia 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 Philadelphia to Denver?

    Currently, August is the cheapest month in which you can book a flight from Philadelphia to Denver (average of C$ 320). Flying from Philadelphia to Denver in December is currently the most expensive (average of C$ 484). 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

Travelling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Golden
Westminster
Thornton

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Alternative routes for Philadelphia to Denver

See prices for flight routes from nearby airports that may be better suited for you.
Reagan-National to Denver flights

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Yes! Start tracking prices for Philadelphia to Denver flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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