Denver

$78+ Cheap flights from Philadelphia to Denver (PHL - DEN)

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 2/22. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
Feb 10 — Feb 171
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Find cheap flights from Philadelphia to Denver with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
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3. Compare prices and book
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The best prices from Philadelphia to Denver Intl are usually found in April or May, booked 56 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

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 February 5, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$158
(Mytrip)

One-way from

$78
(Cheapflightsfares)

Popular in

December

Cheapest in

April

Average price

$348

Good round-trip deal

$276 or less

Good one-way deal

$149 or less
Provider with most accurate pricing for Philadelphia-Denver Intl flight deals.
Provider most trusted by Cheapflights users for Philadelphia-Denver Intl flights.
From Philadelphia to Denver Intl
One-way flight from Philadelphia to Denver Intl
Highest demand for flights based on searches. 11% potential increase in price ($38 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Average for round-trip flights in February 2025
Price to beat on a round-trip flight from Philadelphia to Denver Intl.
Price to beat on a one-way flight from Philadelphia to Denver Intl.

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 February 5, 2025.

This Mytrip deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/215:49 pmPHL - DEN
1 stop17h 19mFrontier
Sun 2/2310:44 pmDEN - PHL
1 stop29h 30mFrontier
Deal found 2/5$158
This CheapOair deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/172:46 pmPHL - DEN
1 stop6h 46mMultiple Airlines
Fri 3/217:45 pmDEN - PHL
1 stop22h 49mMultiple Airlines
Deal found 2/4$179
This American Airlines deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/79:00 pmPHL - DEN
Nonstop4h 29mAmerican Airlines
Mon 3/1012:20 amDEN - PHL
Nonstop3h 22mAmerican Airlines
Deal found 2/5$210
This JetBlue deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/36:10 pmPHL - DEN
1 stop6h 49mJetBlue
Thu 3/611:59 pmDEN - PHL
1 stop7h 37mJetBlue
Deal found 2/4$236
This Delta deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/196:59 pmPHL - DEN
1 stop6h 05mDelta
Wed 3/2612:20 pmDEN - PHL
1 stop6h 30mDelta
Deal found 2/5$257
This Southwest deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/52:45 pmPHL - DEN
Nonstop4h 20mSouthwest
Mon 3/107:50 pmDEN - PHL
Nonstop3h 25mSouthwest
Deal found 2/3$258
This United Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/253:21 pmPHL - DEN
Nonstop4h 29mUnited Airlines
Wed 2/265:50 pmDEN - PHL
Nonstop3h 31mUnited Airlines
Deal found 2/4$277
This Cheapflightsfares deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/512:05 pmPHL - DEN
1 stop8h 10mSun Country Air
Wed 6/117:15 pmDEN - PHL
1 stop13h 55mSun Country Air
Deal found 2/4$299

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 2,558,603 searches. Data last updated February 5, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Fri 2/21

5:49 pm-9:08 am

1 stop17h 19m

Denver Intl

Sun 2/23

10:44 pm-6:14 am

1 stop29h 30m

$158

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Thu 3/20

6:45 pm-12:49 am

1 stop8h 04m

Denver Intl

Thu 3/27

7:00 pm-11:02 am

1 stop14h 02m

$175

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 3/5

2:45 pm-5:05 pm

Nonstop4h 20m

Denver Intl

Tue 3/11

6:15 pm-11:40 pm

Nonstop3h 25m

$201

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Tue 2/25

6:10 pm-10:59 pm

1 stop6h 49m

Denver Intl

Tue 3/4

11:59 pm-9:37 am

1 stop7h 38m

$209

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Fri 3/7

9:00 pm-11:29 pm

Nonstop4h 29m

Denver Intl

Mon 3/10

12:20 am-5:42 am

Nonstop3h 22m

$210

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 3/19

6:59 pm-11:04 pm

1 stop6h 05m

Denver Intl

Tue 3/25

3:02 pm-11:43 pm

1 stop6h 41m

$257

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Tue 2/25

3:21 pm-5:50 pm

Nonstop4h 29m

Denver Intl

Wed 2/26

5:50 pm-11:21 pm

Nonstop3h 31m

$277

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Thu 6/5

12:05 pm-6:15 pm

1 stop8h 10m

Denver Intl

Wed 6/11

7:15 pm-11:10 am

1 stop13h 55m

$299

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 2/22

7:34 pm-10:09 pm

Nonstop4h 35m

$78

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 4/2

8:00 am-10:17 am

Nonstop4h 17m

$96

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/5

Showing 1-10 of 16 results
1
2

Compare providers for flights from Philadelphia to Denver

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Denver in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy1 starTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
CheapfaremartPrice Accuracy-Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Philadelphia-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-Denver flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for Philadelphia to Denver flights

Find out what our experts recommend to make the most of your Philadelphia to Denver trip
Airlines
Frontier

Frontier's UpFront Plus guarantees an empty middle seat for added comfort.


Early check-in helps secure your place onboard due to frequent overbooking.

Read more about Frontierby Marisa Garcia
American Airlines

Main Cabin Extra offers 34”-35” seat pitch, enhancing comfort over standard economy.


Flagship First includes lounge access and priority boarding, enhancing travel experience.

United Airlines

Basic Economy allows a personal item only; carry-on incurs fees unless exceptions apply.


Prepay checked bags 24 hours before to save on fees; premium cabins may waive fees.

Airports
PHL

For a quick check-in, verify your airline's terminal before arriving. Terminals are spread out, with only B and C, and D and E connected indoors.

Read more about PHLby Mark Chesnut
DEN

Use the A Line train for a cost-effective trip to downtown Denver. It runs every 15 minutes and takes 37 minutes to Union Station.

Read more about DENby Emily Zemler
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Frontier and American Airlines

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Mark Chesnut

Mark Chesnut

Expert on PHL

Mark Chesnut

Mark Chesnut

Mark Chesnut is a travel writer and public speaker with more than 30 years of experience. The 2019 winner of the NLGJA Excellence in Travel Writing Award, Mark is the author of the book “Prepare for Departure” and has covered air travel for multiple top consumer and trade media outlets.

Read more
Emily Zemler

Emily Zemler

Expert on DEN

Emily Zemler

Emily Zemler

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.

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 January 31, 2025.

Booking 56 days in advance of your planned departure date is, on average, the best time to get cheap flights from Philadelphia to Denver. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Philadelphia to Denver?

Currently, October is the cheapest month in which you can book a flight from Philadelphia to Denver (average of $197). Flying from Philadelphia to Denver in March is currently the most expensive (average of $278). 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 February 5, 2025.

It’s typically best to fly out from Philadelphia to Denver in the evening. Doing so could potentially save you 53% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Philadelphia to Denver?

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to Denver. Price data was last updated on February 2, 2025.

Travelers seeking maximum savings on their Philadelphia to Denver flight should consider departing on Saturday evenings when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 February 5, 2025.

The most flights from PHL to DEN are scheduled on a Monday (11 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (8 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 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Denver when rainfall is around 0.5 in.

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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 February 5, 2025.
Get a feel of what it's like to fly with Southwest, Delta and JetBlue from Philadelphia to Denver by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.1

Boarding

8.2

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.1

Boarding

8.2

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.0
Very good

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.1

Boarding

8.2

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.1

Boarding

8.2

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.1

Boarding

8.2

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.1

Boarding

8.2

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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.
  • What airports do I use to fly from Philadelphia to Denver?

    Booking a flight from Philadelphia (PHL) to Denver Intl (DEN) is your only option if you wish to fly from Philadelphia to Denver. On a typical day, there are 9 flights from Philadelphia to Denver Intl, all of which are around 3h 55m for a nonstop flight. You can also purchase a plane ticket from 8 airlines when you book a flight from Philadelphia to Denver.

  • How popular is this Philadelphia to Denver flight route?

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

    Currently priced at $158, Frontier will fly you from Philadelphia to Denver and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from JetBlue and American Airlines - these airlines can fly you to your destination from $209 and $210, respectively. Frontier is priced at 46% lower than the current average price of a flight leaving 3 months from now.

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

    One-way options have recently been found by users for as low as $78 on Frontier. Other airlines that offer cheap prices include United Airlines from $96 and JetBlue from $105 one-way.

  • 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 (87%), Air Canada (85%) or Qatar Airways (76%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Philadelphia to Denver?

    On average you can expect to pay $790 for a flight from Philadelphia to Denver. The cheapest flight overall is $76 while the most popular route, (Philadelphia - Denver Intl) is currently priced at $57.

  • 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, October is the cheapest month in which you can book a flight from Philadelphia to Denver (average of $197). Flying from Philadelphia to Denver in March is currently the most expensive (average of $278). 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

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Westminster
Black Hawk
Winter Park
Lakewood
Broomfield
Silverthorne
Golden
Brighton
Keystone
Frisco
Wheat Ridge
Grand Lake
Idaho Springs
Greeley
Central City
Copper Mountain
Longmont
Thornton
Limon
Dillon

Browse thousands of different options on Cheapflights for your next trip

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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.

Top 8 airlines flying from Philadelphia to Denver

Discover the top 8 airlines that operate flights from Philadelphia to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
Sun Country AirCheapest$82Average$275FlexibilityNo cancel feeOn-time83%
FrontierCheapest$88Average$204FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$130Average$247FlexibilityNo cancel feeOn-time88%
SouthwestCheapest$184Average$332FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$185Average$366FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$186Average$413FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$207Average$326FlexibilityNo cancel feeOn-time62%
DeltaCheapest$221Average$334FlexibilityNo cancel feeOn-timeN/A
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