HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Philadelphia

$89+ 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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — PHL
Apr 29 — May 61
Tue 4/29
Tue 5/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Colorado to Philadelphia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 April 24, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$172
(CheapOair)

One-way from

$89
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$292

Good round-trip deal

$257 or less

Good one-way deal

$138 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. 14% potential increase in price ($48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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

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 April 24, 2025.

This CheapOair deal was found by Cheapflights users on 4/22. 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.
Sat 6/711:30 pmDEN - PHL
Nonstop3h 40mFrontier
Sun 6/87:55 amPHL - DEN
1 stop25h 35mFrontier
Deal found 4/22$172
This American Airlines deal was found by Cheapflights users on 4/22. 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 5/712:06 pmDEN - PHL
Nonstop3h 39mAmerican Airlines
Tue 5/137:40 pmPHL - DEN
Nonstop4h 13mAmerican Airlines
Deal found 4/22$186
This United Airlines deal was found by Cheapflights users on 4/22. 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 5/75:59 pmDEN - PHL
Nonstop3h 36mUnited Airlines
Sat 5/103:46 pmPHL - DEN
Nonstop4h 17mUnited Airlines
Deal found 4/22$211
This JetBlue deal was found by Cheapflights users on 4/22. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2410:38 pmDEN - PHL
1 stop7h 59mJetBlue
Wed 5/286:00 amPHL - DEN
1 stop8h 28mJetBlue
Deal found 4/22$229
This Southwest deal was found by Cheapflights users on 4/22. 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.
Sat 6/76:05 pmDEN - PHL
Nonstop3h 40mSouthwest
Tue 6/1011:40 amPHL - DEN
2 stops11h 20mSouthwest
Deal found 4/22$230
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Tue 5/61:40 pmGJT - PHL
1 stop7h 55mUnited Airlines
Fri 5/98:00 amPHL - GJT
1 stop6h 38mUnited Airlines
Deal found 4/22$246
This Delta deal was found by Cheapflights users on 4/22. 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 5/1912:59 amDEN - PHL
1 stop6h 32mDelta
Tue 5/276:00 amPHL - DEN
1 stop6h 08mDelta
Deal found 4/22$257
This American Airlines deal was found by Cheapflights users on 4/23. 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 6/192:31 pmASE - PHL
1 stop8h 28mAmerican Airlines
Tue 6/245:00 amPHL - ASE
1 stop6h 52mAmerican Airlines
Deal found 4/23$265
This Booking.com deal was found by Cheapflights users on 4/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/207:43 pmDEN - PHL
1 stop13h 27mMultiple Airlines
Sun 6/226:15 amPHL - DEN
Nonstop4h 14mMultiple Airlines
Deal found 4/22$272
This American Airlines deal was found by Cheapflights users on 4/21. 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 5/75:00 amGJT - PHL
1 stop7h 46mAmerican Airlines
Sun 5/119:30 amPHL - GJT
1 stop10h 29mAmerican Airlines
Deal found 4/21$300
This American Airlines deal was found by Cheapflights users on 4/23. 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.
Sun 9/75:08 pmCOS - PHL
1 stop5h 52mAmerican Airlines
Wed 9/106:45 pmPHL - COS
1 stop6h 40mAmerican Airlines
Deal found 4/23$320
This Delta deal was found by Cheapflights users on 4/23. 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.
Sun 9/76:00 amCOS - PHL
1 stop6h 42mDelta
Wed 9/101:00 pmPHL - COS
2 stops11h 29mDelta
Deal found 4/23$325

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 April 24, 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

Wed 7/2

11:30 pm-5:10 am

Nonstop3h 40m

Philadelphia

Sat 7/5

6:15 am-8:28 am

Nonstop4h 13m

$177

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Wed 5/7

12:06 pm-5:45 pm

Nonstop3h 39m

Philadelphia

Tue 5/13

7:40 pm-9:53 pm

Nonstop4h 13m

$211

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Thu 5/8

11:59 pm-5:35 am

Nonstop3h 36m

Philadelphia

Tue 5/13

8:00 am-10:17 am

Nonstop4h 17m

$241

Grand JunctionPhiladelphia

GJT - PHL

GJTPHL

Grand Junction Regnl

Tue 5/6

1:40 pm-11:35 pm

1 stop7h 55m

Philadelphia

Fri 5/9

8:00 am-12:38 pm

1 stop6h 38m

$246

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Tue 6/10

6:30 pm-12:05 am

Nonstop3h 35m

Philadelphia

Mon 6/16

5:30 am-12:05 pm

2 stops8h 35m

$250

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Thu 5/22

6:54 pm-11:11 am

1 stop14h 17m

Philadelphia

Mon 5/26

6:15 am-8:37 am

Nonstop4h 22m

$252

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Mon 5/19

12:55 am-9:09 am

1 stop6h 14m

Philadelphia

Sat 5/24

7:05 am-12:04 pm

1 stop6h 59m

$257

AspenPhiladelphia

ASE - PHL

ASEPHL

Aspen Pitkin County

Thu 6/19

2:31 pm-12:59 am

1 stop8h 28m

Philadelphia

Tue 6/24

5:00 am-9:52 am

1 stop6h 52m

$265

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Mon 5/19

10:38 pm-9:38 am

1 stop9h 00m

Philadelphia

Thu 5/22

6:00 am-12:28 pm

1 stop8h 28m

$288

Grand JunctionPhiladelphia

GJT - PHL

GJTPHL

Grand Junction Regnl

Wed 5/7

5:00 am-2:46 pm

1 stop7h 46m

Philadelphia

Sun 5/11

9:30 am-5:59 pm

1 stop10h 29m

$300

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 53 results
1
2
3
...
6

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 April 24, 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 April 24, 2025.

The most flights from USCO to PHL are scheduled on a Thursday (14 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 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 April 24, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Colorado to Philadelphia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,918 reviews

Comfort

7.9

Entertainment

7.1

Overall

8.0

Boarding

8.2

Food

7.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,918 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Comfort

7.9

Entertainment

7.1

Overall

8.0

Boarding

8.2

Food

7.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Comfort

7.9

Entertainment

7.1

Overall

8.0

Boarding

8.2

Food

7.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,920 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Comfort

7.9

Entertainment

7.1

Overall

8.0

Boarding

8.2

Food

7.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,685 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Comfort

7.9

Entertainment

7.1

Overall

8.0

Boarding

8.2

Food

7.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
JetBlue
7.3
Good
2,924 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Comfort

7.9

Entertainment

7.1

Overall

8.0

Boarding

8.2

Food

7.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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 74 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 $89. Users have also found prices from $97 and $106 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 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 British Airways (89%), Air Canada (86%) or Qatar Airways (86%) 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 $84. On average you can expect to pay $579. The most popular route, (Denver Intl - Philadelphia), can usually be booked for $171.

  • 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
Vineland
Pottstown
Wildwood
King of Prussia
Reading
Cherry Hill
Exton
Ocean City
Essington
Chester
Middletown
Willow Grove
Newark
Millville
Ephrata
Camden
Dewey Beach
West Chester
Malvern
Dover

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Colorado to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to John F Kennedy Intl flights
Dallas/Fort Worth to John F Kennedy Intl flights
San Francisco to John F Kennedy Intl flights
Dallas/Fort Worth to LaGuardia flights
Los Angeles to Newark flights
Dallas/Fort Worth to Newark flights
San Francisco to Newark flights
O'Hare Intl to John F Kennedy Intl flights
O'Hare Intl to LaGuardia flights
Los Angeles to LaGuardia flights
Fort Lauderdale to Newark flights
Seattle to John F Kennedy Intl flights
Fort Lauderdale to LaGuardia flights
Atlanta to LaGuardia flights
Miami to LaGuardia flights
Seattle to Newark flights
Atlanta to Newark flights
Miami to Newark flights
Atlanta to John F Kennedy Intl flights
Miami to John F Kennedy Intl flights
Dallas/Fort Worth to Dulles Intl flights
Orlando to Newark flights
O'Hare Intl to Newark flights
Los Angeles to Reagan-National flights
San Francisco to LaGuardia flights
Los Angeles to Dulles Intl flights
Hobby to Newark flights
Fort Lauderdale to John F Kennedy Intl flights
Ontario to John F Kennedy Intl flights
Orlando to LaGuardia flights
Orlando to John F Kennedy Intl flights
Burbank to Newark flights
Hobby to John F Kennedy Intl flights
Hobby to LaGuardia flights
Denver to Newark flights
Ontario to Newark flights
Tampa to Newark flights
Dallas/Fort Worth to Reagan-National flights
Santa Ana to Newark flights
Midway to John F Kennedy Intl flights
Midway to Newark flights
San Diego to John F Kennedy Intl flights
Sky Harbor Intl to John F Kennedy Intl flights
George Bush Intcntl to John F Kennedy Intl flights
Seattle to LaGuardia flights
George Bush Intcntl to Newark flights
Tampa to John F Kennedy Intl flights
San Francisco to Dulles Intl flights
George Bush Intcntl to LaGuardia flights
Denver to John F Kennedy Intl flights

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 April 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$90Average$211FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$187Average$589FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$188Average$475FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$195Average$423FlexibilityNo cancel feeOn-time63%
DeltaCheapest$235Average$423FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.