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$90+ Cheap flights from Colorado to Philadelphia (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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — PHL
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Find flight deals from Colorado to Philadelphia

Cheapest flights from Colorado to Philadelphia
Explore the most affordable flight options available from Colorado to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1212:59 amDEN - PHL
1 stop8h 30mFrontier
Sat 11/157:38 pmPHL - DEN
1 stop15h 05mFrontier
Deal found 10/30$183
This CheapOair deal was found by Cheapflights users on 10/30. 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.
Fri 11/2111:15 pmDEN - PHL
Nonstop3h 30mFrontier
Mon 11/246:00 amPHL - DEN
Nonstop4h 25mFrontier
Deal found 10/30$184
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/149:05 amDEN - PHL
1 stop7h 44mFrontier
Wed 11/196:50 pmPHL - DEN
2 stops20h 18mFrontier
Deal found 10/30$185
This Mytrip deal was found by Cheapflights users on 10/30. 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.
Tue 11/1112:59 amDEN - PHL
1 stop6h 13mFrontier
Fri 11/142:02 pmPHL - DEN
1 stop7h 24mFrontier
Deal found 10/30$186
This Frontier deal was found by Cheapflights users on 10/27. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/212:59 amDEN - PHL
1 stop8h 30mFrontier
Mon 11/106:19 amPHL - DEN
Nonstop4h 16mFrontier
Deal found 10/27$187
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1110:29 pmDEN - PHL
2 stops24h 05mFrontier
Sun 12/148:36 pmPHL - DEN
Nonstop4h 23mFrontier
Deal found 10/27$188
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1912:59 amDEN - PHL
1 stop11h 02mFrontier
Wed 12/312:20 pmPHL - DEN
2 stops22h 36mFrontier
Deal found 10/30$189
This CheapOair deal was found by Cheapflights users on 10/30. 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.
Fri 11/1411:15 pmDEN - PHL
Nonstop3h 34mFrontier
Mon 11/176:19 amPHL - DEN
Nonstop4h 16mFrontier
Deal found 10/30$190
This Frontier deal was found by Cheapflights users on 10/30. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/111:15 pmDEN - PHL
Nonstop3h 30mFrontier
Thu 12/114:12 pmPHL - DEN
1 stop9h 47mFrontier
Deal found 10/30$191
This Mytrip deal was found by Cheapflights users on 10/29. 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 11/711:15 pmDEN - PHL
Nonstop3h 34mFrontier
Sat 11/88:00 amPHL - DEN
1 stop24h 51mFrontier
Deal found 10/29$192
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/146:25 amDEN - PHL
1 stop8h 01mFrontier
Thu 11/2012:52 pmPHL - DEN
2 stops20h 40mFrontier
Deal found 10/30$193
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/146:25 amDEN - PHL
1 stop8h 01mMultiple Airlines
Sat 11/159:30 amPHL - DEN
2 stops12h 29mMultiple Airlines
Deal found 10/30$194

Cheap flight deals from Colorado to Philadelphia

Keep the following information in mind while searching for Colorado to Philadelphia flight deals. Data was last updated October 30, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$183
(Kiwi.com)

One-way from

$90
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$307

Good round-trip deal

$248 or less

Good one-way deal

$131 or less
Provider with most accurate pricing for Denver Intl-Philadelphia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Philadelphia flights.
Search Deals
From Colorado to Philadelphia
Search Deals
One-way flight from Colorado to Philadelphia
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($37 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Colorado to Philadelphia.
Search Deals
Price to beat on a one-way flight from Colorado to Philadelphia.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado 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 October 30, 2025.
Use the filters below to find and compare flights from Colorado to Philadelphia that are best for you.

Fly from

Colorado

Fly to

Philadelphia

Route

Depart

Return

Price

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Thu 12/4

5:15 pm-10:35 pm

Nonstop3h 20m

Philadelphia

Thu 12/11

3:05 pm-9:35 pm

1 stop8h 30m

$247

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Sun 12/14

5:45 am-1:19 pm

1 stop5h 34m

Philadelphia

Wed 12/17

6:00 am-10:18 am

1 stop6h 18m

$247

MontrosePhiladelphia

MTJ - PHL

MTJPHL

Montrose County

Thu 12/25

3:08 pm-12:27 am

1 stop7h 19m

Philadelphia

Fri 1/2

7:00 am-2:12 pm

1 stop9h 12m

$249

MontrosePhiladelphia

MTJ - PHL

MTJPHL

Montrose County

Tue 12/23

3:08 pm-12:27 am

1 stop7h 19m

Philadelphia

Fri 1/2

7:00 am-2:12 pm

1 stop9h 12m

$249

MontrosePhiladelphia

MTJ - PHL

MTJPHL

Montrose County

Mon 12/22

3:08 pm-12:27 am

1 stop7h 19m

Philadelphia

Mon 1/5

5:40 am-1:08 pm

1 stop9h 28m

$249

MontrosePhiladelphia

MTJ - PHL

MTJPHL

Montrose County

Tue 12/23

3:08 pm-12:27 am

1 stop7h 19m

Philadelphia

Mon 1/5

5:40 am-1:08 pm

1 stop9h 28m

$249

MontrosePhiladelphia

MTJ - PHL

MTJPHL

Montrose County

Mon 12/22

3:08 pm-12:27 am

1 stop7h 19m

Philadelphia

Fri 1/2

7:00 am-2:12 pm

1 stop9h 12m

$249

MontrosePhiladelphia

MTJ - PHL

MTJPHL

Montrose County

Wed 12/24

3:08 pm-12:30 am

1 stop7h 22m

Philadelphia

Sat 1/3

6:00 am-2:12 pm

2 stops10h 12m

$254

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Sun 11/16

10:10 am-3:42 pm

Nonstop3h 32m

Philadelphia

Tue 11/18

3:48 pm-6:08 pm

Nonstop4h 20m

$258

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Wed 1/14

10:50 am-4:20 pm

Nonstop3h 30m

Philadelphia

Sat 1/17

8:05 am-11:55 am

1 stop5h 50m

$302

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 60 results
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Best time to book a flight from Colorado to Philadelphia

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

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

Currently, November is the cheapest month in which you can book a flight from Colorado to Philadelphia (average of $83). Flying from Colorado to Philadelphia in June is currently the most expensive (average of $152). 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 CO to PHL?

Find hourly flight availability from Colorado 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 October 30, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 39% on flights from Colorado to Philadelphia by exploring options for tickets in the evening.

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

Use this chart to determine the cheapest time to fly round-trip from Colorado to Philadelphia. Price data was last updated on December 16, 2024.

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

Related info for your journey

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

    For a flight from Colorado to Philadelphia, you will be flying into Philadelphia. Philadelphia (PHL) is just 7.0 mi from the center of the city.

  • How popular is this Colorado to Philadelphia flight route?

    Flights from Colorado to Philadelphia have been viewed 69 times in the past calendar month.

  • How long is the flight from Colorado to Philadelphia?

    Southwest, Delta, and United Airlines can get you from Colorado to Philadelphia in just under 3h 20m. Your travel time can differ by up to 2h 14m. There are 1553 mi between Colorado and Philadelphia. Both multi-stop and nonstop flights can be found to your destination and back.

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

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $95. Users have also found prices from $105 and $205 on Southwest and American Airlines, respectively.

  • What are the most popular routes from Colorado to Philadelphia?

    Most travelers choose Denver Intl - Philadelphia, Colorado Springs - Philadelphia or Grand Junction Regnl - Philadelphia when deciding on the best route from Colorado to Philadelphia.

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

    Consider United Airlines (87%), British Airways (83%) or American Airlines (83%) when booking your flight. These represent the most reliable airlines when flying from Colorado to Philadelphia.

  • What are the cheapest flights from Colorado to Philadelphia?

    The cheapest flight price from Colorado to Philadelphia is $79. On average you can expect to pay $305. The most popular route, (Denver Intl - Philadelphia), can usually be booked for $122.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Colorado to Philadelphia (average of $83). Flying from Colorado to Philadelphia in June is currently the most expensive (average of $152). 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
Wildwood
King of Prussia
Pottstown
Reading
Ocean City
Cherry Hill
Dewey Beach
Ephrata
Camden
Vineland
Milford
Dover
Elkton
Essington
Willow Grove
Newark
Millville
Chester
Exton
Havre de Grace

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Top 6 airlines flying from Colorado to Philadelphia

Discover the top 6 airlines that operate flights from Colorado 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$122Average$261FlexibilityNo cancel feeOn-time62%
FrontierCheapest$123Average$236FlexibilityNo cancel feeOn-time62%
DeltaCheapest$128Average$373FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$190Average$565FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$200Average$467FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$201Average$424FlexibilityNo cancel feeOn-time63%

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