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$99+ Cheap flights from Philadelphia (PHL) to Colorado

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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Philadelphia to Colorado

Keep the following information in mind while searching for Philadelphia to Colorado flight deals. Data was last updated June 12, 2025.

Round-trip from

$171
(Cheapflightsfares)

One-way from

$99
(United Airlines)

Popular in

December

Cheapest in

September

Average price

$288

Good round-trip deal

$198 or less

Good one-way deal

$135 or less
From Philadelphia to Colorado
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One-way flight from Philadelphia to Colorado
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Highest demand for flights based on searches. 5% potential increase in price ($16 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 June 2025
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Price to beat on a round-trip flight from Philadelphia to Colorado.
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Price to beat on a one-way flight from Philadelphia to Colorado.
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Find flight deals from Philadelphia to Colorado

Cheapest flights from Philadelphia to Colorado
Explore the most affordable flight options available from Philadelphia to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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.
Sat 8/166:15 amPHL - DEN
Nonstop4h 13mFrontier
Wed 8/2011:15 pmDEN - PHL
Nonstop3h 39mFrontier
Deal found 6/11$171
This American Airlines deal was found by Cheapflights users on 6/11. 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 10/18:33 amPHL - DEN
Nonstop4h 04mAmerican Airlines
Wed 10/12:13 pmDEN - PHL
Nonstop3h 48mAmerican Airlines
Deal found 6/11$192
This Southwest deal was found by Cheapflights users on 6/11. 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 9/234:45 pmPHL - DEN
Nonstop4h 00mSouthwest
Sat 9/2711:05 amDEN - PHL
Nonstop3h 35mSouthwest
Deal found 6/11$212
This United Airlines deal was found by Cheapflights users on 6/10. 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 9/38:00 amPHL - HDN
1 stop6h 21mUnited Airlines
Wed 9/101:25 pmHDN - PHL
1 stop8h 04mUnited Airlines
Deal found 6/10$257
This Delta deal was found by Cheapflights users on 6/10. 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.
Sat 8/95:21 pmPHL - DEN
1 stop7h 08mDelta
Sat 8/164:00 pmDEN - PHL
1 stop5h 50mDelta
Deal found 6/10$257
This American Airlines deal was found by Cheapflights users on 6/10. 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 8/123:39 pmPHL - DRO
1 stop8h 51mAmerican Airlines
Wed 8/2011:52 amDRO - PHL
1 stop9h 31mAmerican Airlines
Deal found 6/10$278
This JetBlue deal was found by Cheapflights users on 6/11. 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.
Thu 10/23:10 pmPHL - DEN
1 stop8h 39mJetBlue
Sun 10/510:44 pmDEN - PHL
1 stop8h 38mJetBlue
Deal found 6/11$283
This American Airlines deal was found by Cheapflights users on 6/10. 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 8/226:00 amPHL - ASE
1 stop7h 46mAmerican Airlines
Tue 8/2612:03 pmASE - PHL
1 stop8h 34mAmerican Airlines
Deal found 6/10$289
This American Airlines deal was found by Cheapflights users on 6/10. 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 8/215:00 amPHL - EGE
1 stop6h 50mAmerican Airlines
Tue 8/2610:30 amEGE - PHL
1 stop8h 46mAmerican Airlines
Deal found 6/10$289
This Delta deal was found by Cheapflights users on 6/10. 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 8/285:00 pmPHL - GJT
1 stop7h 43mDelta
Sun 8/316:00 amGJT - PHL
1 stop7h 50mDelta
Deal found 6/10$289
This United Airlines deal was found by Cheapflights users on 6/10. 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 8/126:30 amPHL - DRO
2 stops7h 57mUnited Airlines
Wed 8/201:40 pmDRO - PHL
2 stops8h 40mUnited Airlines
Deal found 6/10$289
This Delta deal was found by Cheapflights users on 6/10. 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 8/46:00 amPHL - COS
1 stop5h 59mDelta
Wed 8/136:00 amCOS - PHL
1 stop5h 30mDelta
Deal found 6/10$297

Cheapflights Fare Finder

Customize your flight search to find flights from Philadelphia to Colorado 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 June 12, 2025.
Use the filters below to find and compare flights from Philadelphia to Colorado that are best for you.

Fly from

Philadelphia

Fly to

Colorado

Route

Depart

Return

Price

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 8/16

6:15 am-8:28 am

Nonstop4h 13m

Denver Intl

Wed 8/20

11:15 pm-4:54 am

Nonstop3h 39m

$171

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 10/1

8:33 am-10:37 am

Nonstop4h 04m

Denver Intl

Wed 10/1

2:13 pm-8:01 pm

Nonstop3h 48m

$192

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Tue 9/23

4:45 pm-6:45 pm

Nonstop4h 00m

Denver Intl

Sat 9/27

11:05 am-4:40 pm

Nonstop3h 35m

$212

PhiladelphiaHayden

PHL - HDN

PHLHDN

Philadelphia

Wed 9/3

8:00 am-12:21 pm

1 stop6h 21m

Hayden Yampa Valley

Wed 9/10

1:25 pm-11:29 pm

1 stop8h 04m

$257

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 8/9

5:21 pm-10:29 pm

1 stop7h 08m

Denver Intl

Sat 8/16

4:00 pm-11:50 pm

1 stop5h 50m

$257

PhiladelphiaDurango

PHL - DRO

PHLDRO

Philadelphia

Tue 8/12

3:39 pm-10:30 pm

1 stop8h 51m

Durango La Plata County

Wed 8/20

11:52 am-11:23 pm

1 stop9h 31m

$278

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Thu 10/2

3:10 pm-9:49 pm

1 stop8h 39m

Denver Intl

Sun 10/5

10:44 pm-9:22 am

1 stop8h 38m

$283

PhiladelphiaGrand Junction

PHL - GJT

PHLGJT

Philadelphia

Thu 8/28

5:00 pm-10:43 pm

1 stop7h 43m

Grand Junction Regnl

Sun 8/31

6:00 am-3:50 pm

1 stop7h 50m

$289

PhiladelphiaDurango

PHL - DRO

PHLDRO

Philadelphia

Tue 8/12

6:30 am-12:27 pm

2 stops7h 57m

Durango La Plata County

Wed 8/20

1:40 pm-12:20 am

2 stops8h 40m

$289

PhiladelphiaAspen

PHL - ASE

PHLASE

Philadelphia

Fri 8/22

6:00 am-11:46 am

1 stop7h 46m

Aspen Pitkin County

Tue 8/26

12:03 pm-10:37 pm

1 stop8h 34m

$289

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 53 results
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Best time to book a flight from Philadelphia to Colorado

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

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

Currently, October is the cheapest month in which you can book a flight from Philadelphia to Colorado (average of $197). Flying from Philadelphia to Colorado in March is currently the most expensive (average of $278). 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 PHL to CO?

Find hourly flight availability from Philadelphia to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

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

Weekly flight availability from Philadelphia to Colorado

Explore weekly flight availability from Philadelphia to Colorado. 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 June 12, 2025.

The most flights from PHL to USCO are scheduled on a Thursday (16 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).

Rainfall in Colorado by month

Plan your trip to Colorado by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Colorado ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Colorado when rainfall is around 0.5 in.

Temperature in Colorado by month

Plan your trip to Colorado by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Colorado, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated June 12, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Philadelphia to Colorado. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
JetBlue
7.3
Good
2,925 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

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

    Philadelphia (PHL) is the airport you will fly out of if you book a flight from Philadelphia to Colorado. It is only a 7.0 mi journey to Philadelphia (PHL) from Philadelphia’s city center.

  • How popular is this Philadelphia to Colorado flight route?

    Within the past month, 153 users have taken a look at flights from Philadelphia to Colorado.

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

    One-way options have recently been found by users for as low as $99 on United Airlines. Other airlines that offer cheap prices include American Airlines from $109 and Frontier from $116 one-way.

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

    When deciding which route to take from Philadelphia to Colorado consider Philadelphia - Denver Intl, Philadelphia - Colorado Springs or Philadelphia - Aspen Pitkin County as they are the most popular.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Philadelphia to Colorado on time: Air Canada (79%), Frontier (71%), Southwest (66%).

  • What are the cheapest flights from Philadelphia to Colorado?

    The cheapest flight price from Philadelphia to Colorado is $92. On average you can expect to pay $768. The most popular route, (Philadelphia - Denver Intl), can usually be booked for $197.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Philadelphia to Colorado (average of $197). Flying from Philadelphia to Colorado in March is currently the most expensive (average of $278). 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

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Alternative routes for Philadelphia to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Philadelphia to Colorado

Discover the top 8 airlines that operate flights from Philadelphia to Colorado. 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Sun Country AirCheapest$82Average$275FlexibilityNo cancel feeOn-time83%
FrontierCheapest$87Average$214FlexibilityNo cancel feeOn-time62%
DeltaCheapest$134Average$372FlexibilityNo cancel feeOn-timeN/A
Allegiant AirCheapest$154Average$216FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$182Average$499FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$188Average$595FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$194Average$477FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$207Average$325FlexibilityNo cancel feeOn-time62%

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