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$84+ Cheap flights from Denver to Philadelphia (DEN - PHL)

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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — PHL
Apr 1 — Apr 81
Tue 4/1
Tue 4/8
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to Philadelphia are usually found in May or September, booked 61 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap flight deals from Denver to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Philadelphia (PHL). 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 March 27, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$158
(Cheapflightsfares)

One-way from

$84
(Cheapflightsfares)

Popular in

December

Cheapest in

May

Average price

$296

Good round-trip deal

$231 or less

Good one-way deal

$134 or less
Provider with most accurate pricing for Denver Intl-Philadelphia flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Philadelphia flights.
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From Denver Intl to Philadelphia
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One-way flight from Denver Intl to Philadelphia
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Highest demand for flights based on searches. 15% potential increase in price ($52 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Denver Intl to Philadelphia.
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Price to beat on a one-way flight from Denver Intl to Philadelphia.
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Find flight deals from Denver to Philadelphia

Cheapest flights from Denver to Philadelphia
Explore the most affordable flight options available from Denver to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 27, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 3/26. 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.
Mon 5/53:36 pmDEN - PHL
Nonstop3h 39mFrontier
Thu 5/812:20 pmPHL - DEN
Nonstop4h 21mFrontier
Deal found 3/26$158
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Tue 5/137:00 amDEN - PHL
Nonstop3h 36mAmerican Airlines
Tue 5/207:40 pmPHL - DEN
Nonstop4h 13mAmerican Airlines
Deal found 3/27$176
This Trip.com deal was found by Cheapflights users on 3/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/243:10 pmDEN - PHL
1 stop6h 59mMultiple Airlines
Mon 4/2812:40 pmPHL - DEN
Nonstop4h 20mMultiple Airlines
Deal found 3/26$201
This Southwest deal was found by Cheapflights users on 3/27. 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.
Tue 7/86:30 pmDEN - PHL
Nonstop3h 35mSouthwest
Tue 7/1510:05 amPHL - DEN
1 stop6h 10mSouthwest
Deal found 3/27$206
This JetBlue Airways deal was found by Cheapflights users on 3/26. 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 Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/210:39 pmDEN - PHL
1 stop9h 02mJetBlue
Sat 5/106:00 amPHL - DEN
1 stop8h 23mJetBlue
Deal found 3/26$236
This United Airlines deal was found by Cheapflights users on 3/26. 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.
Sat 6/711:45 pmDEN - PHL
Nonstop3h 37mUnited Airlines
Thu 7/2410:10 amPHL - DEN
Nonstop4h 07mUnited Airlines
Deal found 3/26$238
This Delta deal was found by Cheapflights users on 3/26. 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.
Mon 4/1412:55 amDEN - PHL
1 stop5h 56mDelta
Thu 4/177:05 amPHL - DEN
1 stop10h 11mDelta
Deal found 3/26$257

Cheapflights Fare Finder

Customize your flight search to find flights from Denver to Philadelphia 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 March 27, 2025.
Use the filters below to find and compare flights from Denver to Philadelphia that are best for you.

Fly from

Denver

Fly to

Philadelphia

Route

Depart

Return

Price

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Mon 5/5

3:36 pm-9:15 pm

Nonstop3h 39m

Philadelphia

Thu 5/8

12:20 pm-2:41 pm

Nonstop4h 21m

$158

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Tue 5/13

7:00 am-12:36 pm

Nonstop3h 36m

Philadelphia

Tue 5/20

7:40 pm-9:53 pm

Nonstop4h 13m

$176

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Thu 4/24

3:10 pm-12:09 am

1 stop6h 59m

Philadelphia

Mon 4/28

12:40 pm-3:00 pm

Nonstop4h 20m

$201

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Mon 5/5

3:40 pm-10:45 pm

1 stop5h 05m

Philadelphia

Thu 5/8

1:35 pm-3:45 pm

Nonstop4h 10m

$209

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Fri 5/2

10:39 pm-9:41 am

1 stop9h 02m

Philadelphia

Sat 5/10

6:00 am-12:23 pm

1 stop8h 23m

$236

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Sat 6/7

11:45 pm-5:22 am

Nonstop3h 37m

Philadelphia

Thu 7/24

10:10 am-12:17 pm

Nonstop4h 07m

$238

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Mon 4/14

12:55 am-8:51 am

1 stop5h 56m

Philadelphia

Thu 4/17

7:05 am-3:16 pm

1 stop10h 11m

$257

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Wed 4/9

11:45 pm-5:15 am

Nonstop3h 30m

$84

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Fri 5/9

5:59 pm-11:35 pm

Nonstop3h 36m

$101

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Sun 5/4

10:39 pm-9:40 am

1 stop9h 01m

$115

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 16 results
1
2

Compare providers for flights from Denver to Philadelphia

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 Denver to Philadelphia in March.
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
PricelinePrice Accuracy1 starTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*2 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy1 starTrust 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 Denver-Philadelphia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Philadelphia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Philadelphia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-Philadelphia 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 Denver-Philadelphia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for Denver to Philadelphia flights

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.
Cheapflights partnered with top experts to bring you the best recommendations for your Denver to Philadelphia trip
Airports
DEN

For a smooth departure, consider using the A Line train to reach DEN, which runs every 15 minutes and connects to Union Station.

Read more about DENby Emily Zemler
PHL

Upon arrival at PHL, use SEPTA's Airport Line for a quick trip to Center City. Stations are conveniently located near arrival gates.

Read more about PHLby Mark Chesnut
Our travel experts
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

Best time to book a flight from Denver to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Denver 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.

Cheapflights Insights

Everything you need to know about your flight from Denver to Philadelphia

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

Use this chart to determine the optimal time to book a round-trip flight from Denver to Philadelphia. Price data was last updated on March 21, 2025.

To ensure you get the cheapest price possible for a flight from Denver to Philadelphia, you should look to book at least 61 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 Denver to Philadelphia?

Currently, August is the cheapest month in which you can book a flight from Denver to Philadelphia (average of $236). Flying from Denver to Philadelphia in March is currently the most expensive (average of $295). 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 DEN to PHL?

Find hourly flight availability from Denver to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 27, 2025.

It’s typically best to fly out from Denver to Philadelphia in the evening. Doing so could potentially save you 57% on the flight price compared to flying at noon, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Denver to Philadelphia. Price data was last updated on March 23, 2025.

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

Weekly flight availability from Denver to Philadelphia

Explore weekly flight availability from Denver to Philadelphia. 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 March 27, 2025.

The most flights from DEN to PHL are scheduled on a Thursday (14 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Philadelphia by month

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

In terms of precipitation, rainfall in Philadelphia ranges from 2.7 - 4.4 inches per month. July is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Philadelphia when rainfall is around 2.7 in.

Temperature in Philadelphia by month

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

If weather is an important factor for your trip to Philadelphia, 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 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. 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 Philadelphia. Reviews last updated March 27, 2025.
See what other customers who have flown with Southwest, Alaska Airlines and Delta from Denver to Philadelphia have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,273 reviews

Boarding

8.2

Food

7.1

Entertainment

7.6

Comfort

8.1

Overall

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Boarding

8.2

Food

7.1

Entertainment

7.6

Comfort

8.1

Overall

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Alaska Airlines
8.0
Very good
9,798 reviews
Southwest
8.1
Very good
4,273 reviews

Boarding

8.2

Food

7.1

Entertainment

7.6

Comfort

8.1

Overall

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,895 reviews
Southwest
8.1
Very good
4,273 reviews

Boarding

8.2

Food

7.1

Entertainment

7.6

Comfort

8.1

Overall

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,603 reviews
Southwest
8.1
Very good
4,273 reviews

Boarding

8.2

Food

7.1

Entertainment

7.6

Comfort

8.1

Overall

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
JetBlue
7.3
Good
2,923 reviews
Southwest
8.1
Very good
4,273 reviews

Boarding

8.2

Food

7.1

Entertainment

7.6

Comfort

8.1

Overall

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

Find useful and relevant information for your journey from Denver to Philadelphia. 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 Denver to Philadelphia?

    If you book a flight from Denver to Philadelphia, you will be flying from Denver Intl to Philadelphia. Flights to Philadelphia (PHL) from Denver Intl (DEN) take 3h 25m for a nonstop flight. There are 6 flights from Denver Intl to Philadelphia per day from 5 airlines.

  • How popular is this Denver to Philadelphia flight route?

    Flights from Denver Intl to Philadelphia have been viewed 85 times in the past calendar month.

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

    Currently priced at $158, Frontier will fly you from Denver to Philadelphia and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Southwest - these airlines can fly you to your destination from $176 and $209, respectively. Users have found that Frontier is 44% cheaper than the other options available to this destination.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $84. Users have also found prices from $101 and $115 on United Airlines and JetBlue, respectively.

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

    No one likes to see their flight delayed. When booking a flight from Denver to Philadelphia consider choosing Aer Lingus (100%), Air Canada (89%) or United Airlines (87%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Denver to Philadelphia?

    The cheapest flight price from Denver to Philadelphia is $70. On average you can expect to pay $814. The most popular route, (Denver Intl - Philadelphia), can usually be booked for $119.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Denver to Philadelphia (average of $236). Flying from Denver to Philadelphia in March is currently the most expensive (average of $295). 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 Denver?

Book flights to Denver if you plan to visit one of these locations
King of Prussia
Vineland
Pottstown
Wildwood
Reading
Cherry Hill
Exton
Ocean City
Essington
Chester
Newark
Middletown
Willow Grove
Millville
Ephrata
Camden
Dewey Beach
West Chester
Malvern
Dover

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Alternative routes for Denver to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Denver to Philadelphia

Discover the top 5 airlines that operate flights from Denver to Philadelphia. 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 March 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$88Average$208FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$182Average$426FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$190Average$340FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$191Average$334FlexibilityNo cancel feeOn-time71%
DeltaCheapest$235Average$318FlexibilityNo cancel feeOn-timeN/A
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