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$84+ Cheap flights from Colorado to Philadelphia (PHL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/3. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — PHL
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$84
(Frontier)

Popular in

December

Cheapest in

May

Average price

$299

Good round-trip deal

$269 or less

Good one-way deal

$162 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
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($54 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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.
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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 February 20, 2025.

This Frontier deal was found by Cheapflights users on 2/20. 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.
Thu 4/32:58 pmEGE - PHL
1 stop12h 33mFrontier
Sun 4/66:40 amPHL - EGE
1 stop9h 28mFrontier
Deal found 2/20$84
This FlightHub deal was found by Cheapflights users on 2/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/412:13 amDEN - PHL
1 stop10h 19mFrontier
Sun 3/96:40 amPHL - DEN
Nonstop4h 31mFrontier
Deal found 2/19$159
This CheapOair deal was found by Cheapflights users on 2/18. 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 3/217:45 pmDEN - PHL
1 stop23h 19mMultiple Airlines
Mon 3/246:26 pmPHL - DEN
1 stop8h 19mMultiple Airlines
Deal found 2/18$179
This Sun Country Air deal was found by Cheapflights users on 2/19. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/217:45 pmDEN - PHL
1 stop23h 19mSun Country Air
Sun 3/307:00 amPHL - DEN
1 stop27h 15mSun Country Air
Deal found 2/19$195
This American Airlines deal was found by Cheapflights users on 2/19. 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 3/2812:20 amDEN - PHL
Nonstop3h 22mAmerican Airlines
Wed 4/97:55 pmPHL - DEN
Nonstop4h 11mAmerican Airlines
Deal found 2/19$205
This JetBlue Airways deal was found by Cheapflights users on 2/19. 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.
Thu 3/2011:59 pmDEN - PHL
1 stop7h 37mJetBlue
Sat 3/296:00 amPHL - DEN
1 stop8h 08mJetBlue
Deal found 2/19$268
This Delta deal was found by Cheapflights users on 2/19. 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 3/2412:55 amDEN - PHL
1 stop6h 01mDelta
Mon 3/317:00 amPHL - DEN
1 stop10h 20mDelta
Deal found 2/19$273
This American Airlines deal was found by Cheapflights users on 2/20. 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 3/205:27 amDRO - PHL
1 stop10h 08mAmerican Airlines
Thu 3/271:35 pmPHL - DRO
1 stop10h 10mAmerican Airlines
Deal found 2/20$338
This United Airlines deal was found by Cheapflights users on 2/20. 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.
Thu 3/201:33 pmDRO - PHL
2 stops8h 57mUnited Airlines
Thu 3/276:00 amPHL - DRO
2 stops10h 48mUnited Airlines
Deal found 2/20$350
This American Airlines deal was found by Cheapflights users on 2/20. 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 3/136:00 amCOS - PHL
1 stop6h 47mAmerican Airlines
Mon 3/171:42 pmPHL - COS
1 stop8h 29mAmerican Airlines
Deal found 2/20$367
This Delta deal was found by Cheapflights users on 2/20. 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 3/266:00 amCOS - PHL
1 stop6h 53mDelta
Wed 4/211:36 amPHL - COS
2 stops9h 25mDelta
Deal found 2/20$372
This Southwest deal was found by Cheapflights users on 2/20. 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 3/266:35 amCOS - PHL
2 stops8h 20mSouthwest
Wed 4/28:10 amPHL - COS
2 stops9h 45mSouthwest
Deal found 2/20$377

Find flights from Colorado to Philadelphia within your budget

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 February 20, 2025.

Fly from

Colorado

Fly to

Philadelphia

Route

Depart

Return

Price

VailPhiladelphia

EGE - PHL

EGEPHL

Vail Eagle County

Thu 4/3

2:58 pm-5:31 am

1 stop12h 33m

Philadelphia

Sun 4/6

6:40 am-2:08 pm

1 stop9h 28m

$84

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Tue 3/4

12:13 am-12:32 pm

1 stop10h 19m

Philadelphia

Sun 3/9

6:40 am-9:11 am

Nonstop4h 31m

$159

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Fri 3/21

7:45 pm-9:04 pm

1 stop23h 19m

Philadelphia

Wed 3/26

3:55 pm-11:04 pm

1 stop9h 09m

$179

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Fri 3/21

7:45 pm-9:04 pm

1 stop23h 19m

Philadelphia

Sun 3/30

7:00 am-8:15 am

1 stop27h 15m

$195

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Fri 3/28

12:20 am-5:42 am

Nonstop3h 22m

Philadelphia

Wed 4/9

7:55 pm-10:06 pm

Nonstop4h 11m

$205

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Thu 3/20

11:59 pm-9:36 am

1 stop7h 37m

Philadelphia

Sat 3/29

6:00 am-12:08 pm

1 stop8h 08m

$268

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Mon 3/24

12:55 am-8:56 am

1 stop6h 01m

Philadelphia

Mon 3/31

7:00 am-3:20 pm

1 stop10h 20m

$273

DurangoPhiladelphia

DRO - PHL

DROPHL

Durango La Plata County

Thu 3/20

5:27 am-5:35 pm

1 stop10h 08m

Philadelphia

Thu 3/27

1:35 pm-9:45 pm

1 stop10h 10m

$338

DurangoPhiladelphia

DRO - PHL

DROPHL

Durango La Plata County

Thu 3/20

1:33 pm-12:30 am

2 stops8h 57m

Philadelphia

Thu 3/27

6:00 am-2:48 pm

2 stops10h 48m

$350

Colorado SpringsPhiladelphia

COS - PHL

COSPHL

Colorado Springs

Thu 3/13

6:00 am-2:47 pm

1 stop6h 47m

Philadelphia

Mon 3/17

1:42 pm-8:11 pm

1 stop8h 29m

$367

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 46 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.

Travel insights for flights from Colorado to Philadelphia

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

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 February 20, 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 February 20, 2025.

The most flights from USCO to PHL are scheduled on a Thursday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 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 February 20, 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
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

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

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

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
9,697 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

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
8,219 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

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

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

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
8,765 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

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 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 97 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 $87. Users have also found prices from $93 and $105 on Sun Country Air and JetBlue, respectively.

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

    Most travelers choose Denver Intl - Philadelphia, Colorado Springs - Philadelphia or Montrose 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 (94%), United Airlines (87%) 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 $74. On average you can expect to pay $674. The most popular route, (Denver Intl - Philadelphia), can usually be booked for $102.

  • 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
Reading
Wildwood
Exton
Ocean City
Cherry Hill
Essington
Chester
Willow Grove
Newark
Middletown
Millville
Wyomissing
Ephrata
Dewey Beach
West Chester
Malvern
Dover

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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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$89Average$209FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$183Average$588FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$184Average$407FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$187Average$503FlexibilityNo cancel feeOn-time71%
DeltaCheapest$226Average$442FlexibilityNo cancel feeOn-timeN/A
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