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$93+ 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 2/22. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — PHL
Feb 11 — Feb 181
Tue 2/11
Tue 2/18
1 adult, Economy
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Cheap flight deals from Colorado to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Colorado (USCO) 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 February 6, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$155
(Frontier)

One-way from

$93
(Cheapflightsfares)

Popular in

December

Cheapest in

April

Average price

$342

Good round-trip deal

$278 or less

Good one-way deal

$157 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
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Highest demand for flights based on searches. 16% potential increase in price ($55 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 February 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 February 6, 2025.

This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/2011:40 pmDEN - PHL
Nonstop3h 25mFrontier
Mon 3/246:26 pmPHL - DEN
1 stop8h 19mFrontier
Deal found 2/5$155
This Justfly.com 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/229:45 amDEN - PHL
1 stop8h 49mMultiple Airlines
Wed 3/266:45 amPHL - DEN
Nonstop4h 31mMultiple Airlines
Deal found 2/5$200
This Cheapflightsfares deal was found by Cheapflights users on 2/6. 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 3/66:55 pmDEN - PHL
1 stop14h 14mSun Country Air
Sun 3/96:50 amPHL - DEN
1 stop13h 57mSun Country Air
Deal found 2/6$206
This American Airlines deal was found by Cheapflights users on 2/6. 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 3/612:24 amDEN - PHL
Nonstop3h 30mAmerican Airlines
Tue 3/1110:59 amPHL - DEN
Nonstop4h 30mAmerican Airlines
Deal found 2/6$210
This Delta deal was found by Cheapflights users on 2/6. 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 3/1712:55 amDEN - PHL
1 stop6h 26mDelta
Wed 3/196:59 pmPHL - DEN
1 stop6h 05mDelta
Deal found 2/6$257
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/195:50 pmDEN - PHL
Nonstop3h 31mUnited Airlines
Wed 2/263:21 pmPHL - DEN
Nonstop4h 29mUnited Airlines
Deal found 2/5$293
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1912:10 pmDEN - PHL
2 stops7h 00mSouthwest
Sun 2/238:20 pmPHL - DEN
1 stop5h 55mSouthwest
Deal found 2/5$302
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.
Thu 3/65:27 amDRO - PHL
1 stop7h 04mAmerican Airlines
Tue 3/1110:37 amPHL - DRO
1 stop7h 24mAmerican Airlines
Deal found 2/5$338
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/611:56 amDRO - PHL
2 stops10h 34mUnited Airlines
Tue 3/113:13 pmPHL - DRO
1 stop7h 53mUnited Airlines
Deal found 2/5$344
This Delta deal was found by Cheapflights users on 2/6. 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.
Thu 3/68:20 amCOS - PHL
1 stop7h 08mDelta
Thu 3/138:05 amPHL - COS
1 stop6h 39mDelta
Deal found 2/6$367
This United Airlines deal was found by Cheapflights users on 2/6. 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 3/61:45 pmCOS - PHL
2 stops8h 45mUnited Airlines
Thu 3/139:40 amPHL - COS
1 stop6h 56mUnited Airlines
Deal found 2/6$372
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/47:45 amASE - PHL
1 stop8h 37mDelta
Tue 6/105:55 amPHL - ASE
1 stop7h 28mDelta
Deal found 2/4$389

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 6, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Thu 3/20

11:40 pm-5:05 am

Nonstop3h 25m

Philadelphia

Mon 3/24

6:26 pm-12:45 am

1 stop8h 19m

$155

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Thu 3/27

7:00 pm-11:02 am

1 stop14h 02m

Philadelphia

Mon 3/31

6:40 am-9:11 am

Nonstop4h 31m

$193

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Thu 3/6

6:55 pm-11:09 am

1 stop14h 14m

Philadelphia

Sun 3/9

6:50 am-6:47 pm

1 stop13h 57m

$206

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Mon 3/17

12:55 am-9:21 am

1 stop6h 26m

Philadelphia

Wed 3/19

6:59 pm-11:04 pm

1 stop6h 05m

$257

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Mon 3/17

12:20 am-5:42 am

Nonstop3h 22m

Philadelphia

Mon 3/31

1:50 pm-8:25 pm

1 stop8h 35m

$265

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Fri 2/28

7:25 pm-12:50 am

Nonstop3h 25m

Philadelphia

Mon 3/3

12:15 pm-2:40 pm

Nonstop4h 25m

$269

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Wed 2/19

5:50 pm-11:21 pm

Nonstop3h 31m

Philadelphia

Wed 2/26

5:43 pm-11:59 pm

1 stop8h 16m

$287

DurangoPhiladelphia

DRO - PHL

DROPHL

Durango La Plata County

Thu 3/6

5:27 am-2:31 pm

1 stop7h 04m

Philadelphia

Tue 3/11

10:37 am-4:01 pm

1 stop7h 24m

$338

DurangoPhiladelphia

DRO - PHL

DROPHL

Durango La Plata County

Thu 3/6

11:56 am-12:30 am

2 stops10h 34m

Philadelphia

Tue 3/11

3:13 pm-9:06 pm

1 stop7h 53m

$344

Colorado SpringsPhiladelphia

COS - PHL

COSPHL

Colorado Springs

Thu 3/6

8:20 am-5:28 pm

1 stop7h 08m

Philadelphia

Thu 3/13

8:05 am-12:44 pm

1 stop6h 39m

$367

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/6

Showing 1-10 of 47 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 6, 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 6, 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 6, 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
4,553 reviews

Boarding

8.2

Food

7.1

Comfort

8.1

Entertainment

7.7

Overall

8.1

Crew

8.7

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.

Southwest
8.1
Very good
4,553 reviews
Southwest
8.1
Very good
4,553 reviews

Boarding

8.2

Food

7.1

Comfort

8.1

Entertainment

7.7

Overall

8.1

Crew

8.7

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.

Alaska Airlines
8.0
Very good
9,696 reviews
Southwest
8.1
Very good
4,553 reviews

Boarding

8.2

Food

7.1

Comfort

8.1

Entertainment

7.7

Overall

8.1

Crew

8.7

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.

Delta
8.0
Very good
8,388 reviews
Southwest
8.1
Very good
4,553 reviews

Boarding

8.2

Food

7.1

Comfort

8.1

Entertainment

7.7

Overall

8.1

Crew

8.7

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.

JetBlue
7.4
Good
3,131 reviews
Southwest
8.1
Very good
4,553 reviews

Boarding

8.2

Food

7.1

Comfort

8.1

Entertainment

7.7

Overall

8.1

Crew

8.7

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.

United Airlines
7.4
Good
8,879 reviews
Southwest
8.1
Very good
4,553 reviews

Boarding

8.2

Food

7.1

Comfort

8.1

Entertainment

7.7

Overall

8.1

Crew

8.7

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 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 96 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 $93. Users have also found prices from $96 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 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 Aer Lingus (97%), Qatar Airways (89%) or United Airlines (84%) 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 $95. On average you can expect to pay $696. The most popular route, (Denver Intl - Philadelphia), can usually be booked for $88.

  • 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
Wildwood
Pottstown
Reading
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 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$89Average$208FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$182Average$403FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$185Average$586FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$187Average$499FlexibilityNo cancel feeOn-time71%
DeltaCheapest$226Average$444FlexibilityNo cancel feeOn-timeN/A
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