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$95+ Cheap flights from Colorado to Pennsylvania

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 6/15. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — PHL
May 5 — May 121
Mon 5/5
Mon 5/12
1 adult, Economy
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Cheap flight deals from Colorado to Pennsylvania

Keep the following information in mind while searching for Colorado to Pennsylvania flight deals. Data was last updated April 30, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$153
(Frontier)

One-way from

$95
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$303

Good round-trip deal

$164 or less

Good one-way deal

$102 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 Pennsylvania
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One-way flight from Colorado to Pennsylvania
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Highest demand for flights based on searches. 14% potential increase in price ($47 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Colorado to Pennsylvania.
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Price to beat on a one-way flight from Colorado to Pennsylvania.
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Find flight deals from Colorado to Pennsylvania

Cheapest flights from Colorado to Pennsylvania
Explore the most affordable flight options available from Colorado to Pennsylvania. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

This Frontier deal was found by Cheapflights users on 4/28. 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.
Wed 6/114:28 pmDEN - DCA
Nonstop3h 31mFrontier
Sun 6/157:00 amDCA - DEN
Nonstop4h 02mFrontier
Deal found 4/28$153
This Frontier deal was found by Cheapflights users on 4/28. 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.
Sat 5/173:36 pmDEN - PHL
Nonstop3h 39mFrontier
Sat 5/246:15 amPHL - DEN
Nonstop4h 22mFrontier
Deal found 4/28$175
This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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.
Fri 6/64:23 pmDEN - LGA
Nonstop3h 51mFrontier
Tue 6/105:30 pmLGA - DEN
1 stop6h 03mFrontier
Deal found 4/29$203
This American Airlines deal was found by Cheapflights users on 4/29. 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 5/1312:06 pmDEN - PHL
Nonstop3h 39mAmerican Airlines
Tue 5/137:40 pmPHL - DEN
Nonstop4h 13mAmerican Airlines
Deal found 4/29$206
This United Airlines deal was found by Cheapflights users on 4/29. 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 6/116:00 amDEN - IAD
Nonstop3h 26mUnited Airlines
Wed 6/1110:19 pmIAD - DEN
Nonstop3h 56mUnited Airlines
Deal found 4/29$217
This CheapOair deal was found by Cheapflights users on 4/29. 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.
Wed 6/2511:30 pmDEN - PHL
Nonstop3h 40mMultiple Airlines
Sat 6/2812:00 pmPHL - DEN
1 stop6h 07mMultiple Airlines
Deal found 4/29$220
This JetBlue deal was found by Cheapflights users on 4/29. 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.
Mon 5/1210:38 pmDEN - JFK
1 stop7h 52mJetBlue
Tue 5/1311:21 amJFK - DEN
Nonstop4h 22mJetBlue
Deal found 4/29$224
This JetBlue deal was found by Cheapflights users on 4/28. 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.
Mon 5/1910:38 pmDEN - PHL
1 stop9h 00mJetBlue
Sun 5/256:00 amPHL - DEN
1 stop8h 28mJetBlue
Deal found 4/28$229
This American Airlines deal was found by Cheapflights users on 4/27. 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 6/107:20 amDEN - IAD
1 stop8h 15mAmerican Airlines
Tue 6/106:43 pmIAD - DEN
1 stop7h 01mAmerican Airlines
Deal found 4/27$231
This Frontier deal was found by Cheapflights users on 4/29. 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.
Tue 5/131:45 pmDEN - JFK
1 stop13h 45mFrontier
Fri 5/1611:00 amJFK - DEN
1 stop14h 59mFrontier
Deal found 4/29$236
This Delta deal was found by Cheapflights users on 4/28. 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 8/710:54 amCOS - IAD
1 stop5h 30mDelta
Wed 8/136:15 amIAD - COS
1 stop6h 29mDelta
Deal found 4/28$237
This Delta deal was found by Cheapflights users on 4/29. 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.
Fri 5/3012:55 amDEN - DCA
1 stop5h 40mDelta
Tue 6/36:59 amDCA - DEN
1 stop6h 02mDelta
Deal found 4/29$237

Cheapflights Fare Finder

Customize your flight search to find flights from Colorado to Pennsylvania 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 30, 2025.
Use the filters below to find and compare flights from Colorado to Pennsylvania that are best for you.

Fly from

Colorado

Fly to

Pennsylvania

Route

Depart

Return

Price

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Wed 6/11

4:28 pm-9:59 pm

Nonstop3h 31m

Washington, D.C. Reagan-National

Sun 6/15

7:00 am-9:02 am

Nonstop4h 02m

$153

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Sat 5/17

3:36 pm-9:15 pm

Nonstop3h 39m

Philadelphia

Sat 5/24

6:15 am-8:37 am

Nonstop4h 22m

$175

DenverNew York

DEN - LGA

DENLGA

Denver Intl

Sat 6/21

4:23 pm-10:14 pm

Nonstop3h 51m

New York LaGuardia

Sun 6/29

10:55 pm-1:17 am

Nonstop4h 22m

$202

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Tue 5/13

12:06 pm-5:45 pm

Nonstop3h 39m

Philadelphia

Tue 5/13

7:40 pm-9:53 pm

Nonstop4h 13m

$206

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Tue 6/10

8:01 am-1:27 pm

Nonstop3h 26m

Washington, D.C. Dulles Intl

Tue 6/10

7:59 pm-9:55 pm

Nonstop3h 56m

$217

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Wed 6/25

11:30 pm-5:10 am

Nonstop3h 40m

Philadelphia

Sat 6/28

12:00 pm-4:07 pm

1 stop6h 07m

$220

DenverNew York

DEN - JFK

DENJFK

Denver Intl

Mon 5/12

10:38 pm-8:30 am

1 stop7h 52m

New York John F Kennedy Intl

Tue 5/13

11:21 am-1:43 pm

Nonstop4h 22m

$224

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Mon 5/19

10:38 pm-9:38 am

1 stop9h 00m

Philadelphia

Sun 5/25

6:00 am-12:28 pm

1 stop8h 28m

$229

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Tue 6/10

7:20 am-5:35 pm

1 stop8h 15m

Washington, D.C. Dulles Intl

Tue 6/10

6:43 pm-11:44 pm

1 stop7h 01m

$231

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Tue 6/10

11:59 pm-9:29 am

1 stop7h 30m

Washington, D.C. Reagan-National

Wed 6/11

12:31 pm-4:44 pm

1 stop6h 13m

$231

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 60 results
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Best time to book a flight from Colorado to Pennsylvania

Have a flexible travel schedule? Discover the best time to fly to Pennsylvania 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 Pennsylvania

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

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

Find hourly flight availability from Colorado to Pennsylvania. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 30, 2025.

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

Weekly flight availability from Colorado to Pennsylvania

Explore weekly flight availability from Colorado to Pennsylvania. 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 30, 2025.

The most flights from USCO to USPA are scheduled on a Monday (12 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Pennsylvania by month

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

In terms of precipitation, rainfall in Pennsylvania 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 Pennsylvania when rainfall is around 2.7 in.

Temperature in Pennsylvania by month

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

If weather is an important factor for your trip to Pennsylvania, 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 Pennsylvania

Get insights into the airlines that provide service to Pennsylvania. 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 Pennsylvania. Reviews last updated April 30, 2025.
Read through reviews of airlines operating flights from Colorado to Pennsylvania, such as Alaska Airlines, Southwest and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

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
9,961 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

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
4,295 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

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
7,936 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,406 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

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
8,696 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

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 Colorado to Pennsylvania. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Colorado to Pennsylvania flight route?

    Within the past month, 74 users have taken a look at flights from Colorado to Pennsylvania.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $95. Users have also found prices from $97 and $101 on Southwest and Sun Country Air, respectively.

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

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

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

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

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

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

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

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Alternative routes for Colorado to Pennsylvania

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Colorado to Pennsylvania

Discover the top 7 airlines that operate flights from Colorado to Pennsylvania. 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 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$42Average$182FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$106Average$221FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$158Average$463FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$188Average$554FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$193Average$434FlexibilityNo cancel feeOn-time63%
DeltaCheapest$216Average$399FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$220Average$249FlexibilityNo cancel feeOn-time62%

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