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$84+ 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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — PHL
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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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 March 28, 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 Colorado to Philadelphia
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One-way flight from Colorado to Philadelphia
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($52 potential increase over avg. RT price).
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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 Colorado to Philadelphia.
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Price to beat on a one-way flight from Colorado to Philadelphia.
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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 March 28, 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
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.
Wed 6/254:35 pmASE - PHL
1 stop6h 24mAmerican Airlines
Tue 7/86:46 amPHL - ASE
1 stop9h 11mAmerican Airlines
Deal found 3/27$287
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.
Wed 8/67:25 pmDRO - PHL
1 stop8h 41mAmerican Airlines
Sat 8/161:26 pmPHL - DRO
1 stop9h 00mAmerican Airlines
Deal found 3/27$338
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 8/52:37 pmMTJ - PHL
1 stop8h 22mAmerican Airlines
Tue 8/198:45 amPHL - MTJ
1 stop6h 54mAmerican Airlines
Deal found 3/27$343
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.
Thu 7/176:59 pmGJT - PHL
1 stop10h 00mAmerican Airlines
Mon 7/217:00 pmPHL - GJT
1 stop7h 17mAmerican Airlines
Deal found 3/27$349
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/111:37 pmDRO - PHL
1 stop7h 58mUnited Airlines
Tue 4/153:45 pmPHL - DRO
1 stop6h 42mUnited Airlines
Deal found 3/27$388

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 March 28, 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

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

AspenPhiladelphia

ASE - PHL

ASEPHL

Aspen Pitkin County

Wed 6/25

4:35 pm-12:59 am

1 stop6h 24m

Philadelphia

Tue 7/8

6:46 am-1:57 pm

1 stop9h 11m

$287

DurangoPhiladelphia

DRO - PHL

DROPHL

Durango La Plata County

Wed 8/6

7:25 pm-6:06 am

1 stop8h 41m

Philadelphia

Sat 8/16

1:26 pm-8:26 pm

1 stop9h 00m

$338

MontrosePhiladelphia

MTJ - PHL

MTJPHL

Montrose County

Tue 8/5

2:37 pm-12:59 am

1 stop8h 22m

Philadelphia

Tue 8/19

8:45 am-1:39 pm

1 stop6h 54m

$343

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 48 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, August is the cheapest month in which you can book a flight from Colorado to Philadelphia (average of $236). Flying from Colorado 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 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 March 28, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado to Philadelphia as you normally would.

Weekly flight availability from Colorado to Philadelphia

Explore weekly flight availability from Colorado 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 28, 2025.

The most flights from USCO 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 28, 2025.
Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta from Colorado to Philadelphia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,274 reviews

Entertainment

7.6

Overall

8.1

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

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
4,274 reviews
Southwest
8.1
Very good
4,274 reviews

Entertainment

7.6

Overall

8.1

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

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
4,274 reviews

Entertainment

7.6

Overall

8.1

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

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
7,897 reviews
Southwest
8.1
Very good
4,274 reviews

Entertainment

7.6

Overall

8.1

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

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
4,274 reviews

Entertainment

7.6

Overall

8.1

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

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
4,274 reviews

Entertainment

7.6

Overall

8.1

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

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 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 85 times in the past calendar month.

  • What are the cheapest airlines to fly from Colorado 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 $115 and $129 on JetBlue and Delta, respectively.

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

    Most travelers choose Denver Intl - Philadelphia, Colorado Springs - Philadelphia or Aspen Pitkin County - Philadelphia when deciding on the best route from Colorado to Philadelphia.

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

    Consider Aer Lingus (100%), Air Canada (89%) or United Airlines (87%) 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 $70. On average you can expect to pay $814. The most popular route, (Denver Intl - Philadelphia), can usually be booked for $141.

  • 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, August is the cheapest month in which you can book a flight from Colorado to Philadelphia (average of $236). Flying from Colorado 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 Colorado?

Book flights to Colorado 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Colorado 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 Colorado to Philadelphia

Discover the top 5 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$88Average$208FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$182Average$585FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$190Average$419FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$191Average$486FlexibilityNo cancel feeOn-time71%
DeltaCheapest$235Average$414FlexibilityNo cancel feeOn-timeN/A
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