What airlines fly to Philadelphia?

United Airlines, Frontier and Delta are the top three most popular airlines that fly to Philadelphia from Colorado according to our data. United Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Philadelphia. Keep in mind that there are 6 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.

How many flights depart from Colorado to Philadelphia on average per week?

As of December 2025, there are 71 flights per week flying from Colorado to Philadelphia. The most common day of the week flights depart is Thu, with 24% of flights taking off on this day.

How many flights depart from Colorado to Philadelphia on average per day?

10 flights are operational daily from Colorado to Philadelphia as of December 2025. The most popular departure time for this route is 7:00AM, with 57% of flights per day taking off at noon.

How long does it take to fly to Philadelphia?

If you’re flying from a popular airport in Colorado, such as Denver or Vail, and flying into Philadelphia, then you can expect flight times to average 3h 35m and 4h 05m, respectively.

What is the cheapest airline that flies from Colorado to Philadelphia?

United Airlines, Southwest, and Delta are the most popular carriers operating from Colorado to Philadelphia

When did momondo last update prices for flights from Colorado to Philadelphia Airport?

Prices for flights from Colorado to Philadelphia Airport refresh daily.

How many operators does momondo search for flights from Colorado to Philadelphia Airport?

As of December 2025, there are 6 operators available to choose from for flights from Colorado to Philadelphia Airport.

How old do you have to be to fly from Colorado to Philadelphia Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Colorado to Philadelphia Airport.

What documentation or ID do you need to fly to Philadelphia Airport?

The required travel and health documents for your Philadelphia Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Philadelphia Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$76 Cheap Flights from Colorado to Philadelphia in 2025/26

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Cheap round-trip flights

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12:42 pm - 9:54 pm

DEN

PHL

7h 12m1 stop

11:52 am - 8:33 pm

PHL

DEN

10h 41m1 stop

$148Frontier

Thu, Feb 19 - Sat, Feb 21

11:25 pm - 6:51 pm

DEN

PHL

17h 26m1 stop

12:28 pm - 9:13 pm

PHL

DEN

10h 45m1 stop

$149Frontier

Wed, Feb 18 - Sat, Feb 28

12:05 am - 10:46 am

DEN

PHL

8h 41m1 stop

1:40 pm - 8:19 am

PHL

DEN

20h 39m2 stops

$153Multiple Airlines

Fri, Jan 16 - Wed, Jan 21

9:05 pm - 8:01 pm

DEN

PHL

20h 56m2 stops

6:00 am - 12:19 pm

PHL

DEN

8h 19m1 stop

$156Multiple Airlines

Fri, Jan 23 - Wed, Jan 28

3:27 pm - 11:30 pm

HDN

PHL

6h 03m1 stop

6:30 am - 10:55 am

PHL

HDN

6h 25m1 stop

$249United Airlines

Fri, Feb 6 - Sun, Feb 8

3:27 pm - 11:30 pm

HDN

PHL

6h 03m1 stop

10:30 am - 8:16 pm

PHL

HDN

11h 46m2 stops

$285United Airlines

Fri, Feb 6 - Sun, Feb 8

12:12 pm - 11:51 pm

ASE

PHL

9h 39m1 stop

6:21 am - 2:18 pm

PHL

ASE

9h 57m1 stop

$289American Airlines

Wed, Jan 7 - Tue, Jan 13

12:12 pm - 11:55 pm

ASE

PHL

9h 43m2 stops

6:21 am - 2:18 pm

PHL

ASE

9h 57m1 stop

$294American Airlines

Wed, Jan 7 - Tue, Jan 13

1:46 pm - 10:50 pm

HDN

PHL

7h 04m1 stop

6:55 am - 12:41 pm

PHL

HDN

7h 46m1 stop

$329Delta

Fri, Feb 6 - Sun, Feb 8

3:35 pm - 12:27 am

EGE

PHL

6h 52m1 stop

7:00 am - 2:30 pm

PHL

EGE

9h 30m1 stop

$359Delta

Mon, Dec 29 - Thu, Jan 1

Frontier flights from Colorado to Philadelphia

Our best Frontier deals on Colorado to Philadelphia flight tickets

Frontier

Feb 19

DEN12:42 pmDenver Intl

7h 12m

1 stop

PHL9:54 pmPhiladelphia

Feb 21

PHL11:52 amPhiladelphia

10h 41m

1 stop

DEN8:33 pmDenver Intl

$148

Find similar

Frontier

Feb 18

DEN11:25 pmDenver Intl

23h 34m

1 stop

PHL12:59 amPhiladelphia

Feb 28

PHL12:28 pmPhiladelphia

10h 45m

1 stop

DEN9:13 pmDenver Intl

$149

Find similar

Frontier

Feb 18

DEN8:00 pmDenver Intl

16h 35m

2 stops

PHL2:35 pmPhiladelphia

Feb 19

PHL5:42 pmPhiladelphia

4h 30m

DEN8:12 pmDenver Intl

$155

Find similar

United Airlines flights from Colorado to Philadelphia

Our best United Airlines deals on Colorado to Philadelphia flight tickets

United Airlines

Feb 6

HDN3:27 pmHayden Yampa Valley

6h 03m

1 stop

PHL11:30 pmPhiladelphia

Feb 8

PHL6:30 amPhiladelphia

6h 25m

1 stop

HDN10:55 amHayden Yampa Valley

$249

Find similar

United Airlines

Feb 6

HDN3:27 pmHayden Yampa Valley

6h 03m

1 stop

PHL11:30 pmPhiladelphia

Feb 8

PHL10:30 amPhiladelphia

11h 46m

2 stops

HDN8:16 pmHayden Yampa Valley

$285

Find similar

United Airlines

Dec 24

DEN4:05 pmDenver Intl

5h 25m

1 stop

PHL11:30 pmPhiladelphia

Jan 1

PHL8:00 amPhiladelphia

4h 29m

DEN10:29 amDenver Intl

$287

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Thu 2/19

12:42 pm-9:54 pm

1 stop7h 12m

Philadelphia

Sat 2/21

11:52 am-8:33 pm

1 stop10h 41m

$148

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Wed 2/18

11:25 pm-6:51 pm

1 stop17h 26m

Philadelphia

Sat 2/28

12:28 pm-9:13 pm

1 stop10h 45m

$149

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Fri 1/16

12:05 am-10:46 am

1 stop8h 41m

Philadelphia

Wed 1/21

1:40 pm-8:19 am

2 stops20h 39m

$153

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Fri 1/23

9:05 pm-8:01 pm

2 stops20h 56m

Philadelphia

Wed 1/28

6:00 am-12:19 pm

1 stop8h 19m

$156

HaydenPhiladelphia

HDN - PHL

HDNPHL

Hayden Yampa Valley

Fri 2/6

3:27 pm-11:30 pm

1 stop6h 03m

Philadelphia

Sun 2/8

6:30 am-10:55 am

1 stop6h 25m

$249

HaydenPhiladelphia

HDN - PHL

HDNPHL

Hayden Yampa Valley

Fri 2/6

3:27 pm-11:30 pm

1 stop6h 03m

Philadelphia

Sun 2/8

10:30 am-8:16 pm

2 stops11h 46m

$285

AspenPhiladelphia

ASE - PHL

ASEPHL

Aspen Pitkin County

Wed 1/7

12:12 pm-11:51 pm

1 stop9h 39m

Philadelphia

Tue 1/13

6:21 am-2:18 pm

1 stop9h 57m

$289

AspenPhiladelphia

ASE - PHL

ASEPHL

Aspen Pitkin County

Wed 1/7

12:12 pm-11:55 pm

2 stops9h 43m

Philadelphia

Tue 1/13

6:21 am-2:18 pm

1 stop9h 57m

$294

HaydenPhiladelphia

HDN - PHL

HDNPHL

Hayden Yampa Valley

Fri 2/6

1:46 pm-10:50 pm

1 stop7h 04m

Philadelphia

Sun 2/8

6:55 am-12:41 pm

1 stop7h 46m

$329

VailPhiladelphia

EGE - PHL

EGEPHL

Vail Eagle County

Mon 12/29

3:35 pm-12:27 am

1 stop6h 52m

Philadelphia

Thu 1/1

7:00 am-2:30 pm

1 stop9h 30m

$359

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Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Colorado to Philadelphia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Philadelphia?

The cheapest month to fly to Philadelphia from Colorado is in September. Flight prices, which tend to average around $270, are often lower during this time because this is during the off-season. The month of August is another great option to travel to Philadelphia, with average flight prices from Colorado averaging around $272.

What is the cheapest day to depart on your flight to Philadelphia?

The cheapest day to depart from Colorado to Philadelphia is on a Thursday. Travelers who choose to depart for Philadelphia on a Thursday will often find tickets for as low as $318. On the other hand, Saturday is the most expensive day to depart from Colorado because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $411.

What is the cheapest time of day to depart on your flight to Philadelphia?

According to our data, the cheapest time of day to fly to Philadelphia is in the afternoon. momondo users have found flights departing from Colorado to Philadelphia in the afternoon for as low as $249. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Philadelphia is at noon when prices are around $482.

What is the cheapest Colorado to Philadelphia flight route?

Fly from Denver Intl to Philadelphia for the best Colorado - Philadelphia flight prices

How far in advance should I book a flight to Philadelphia?

You are more likely to see cheaper flights to Philadelphia from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around $311 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from Colorado for as low as $267 on momondo.

What cabin class options are available on Colorado to Philadelphia flights?

There are 4 cabin classes available to choose from on Colorado to Philadelphia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Colorado to Philadelphia flights?

No. A direct flight is the cheapest option for a flight between Colorado to Philadelphia.

Cheap Colorado to Philadelphia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Philadelphia

Best Price Found	$151
Fastest flight time	3h 21m
Direct flights	Every day
Airports in Philadelphia	1 airport

The best one-way flight to Philadelphia from Colorado in the past 72 hours is $151. The best round-trip flight deal from Colorado to Philadelphia found on momondo in the last 72 hours is $250.

The fastest flight from Colorado to Philadelphia takes 3h 21m

Direct flights go from Colorado to Philadelphia every day.

There is 1 airport in Philadelphia. From Colorado there are direct flights to Philadelphia (PHL).

Search flight deals

When did momondo last update prices for flights from Colorado to Philadelphia Airport?
Prices for flights from Colorado to Philadelphia Airport refresh daily.
How many operators does momondo search for flights from Colorado to Philadelphia Airport?
As of December 2025, there are 6 operators available to choose from for flights from Colorado to Philadelphia Airport.
How old do you have to be to fly from Colorado to Philadelphia Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Colorado to Philadelphia Airport.
What documentation or ID do you need to fly to Philadelphia Airport?
The required travel and health documents for your Philadelphia Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Philadelphia Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Colorado to Philadelphia?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Colorado to Philadelphia is Boeing 737-800 (20.90% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (16.85%), Airbus A321-100/200 (12.76%), and Boeing 737 MAX 9 (8.58%).

Best airlines flying from Colorado to Philadelphia

Compare and see reviews for airlines that fly from Colorado to Philadelphia with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $122	Free Cancellation	Rating 5.8 3,081 reviews	Search Frontier flights
JetBlue	PriceFrom $122	Free Cancellation	Rating 7.2 2,896 reviews	Search JetBlue flights
Delta	PriceFrom $128	Free Cancellation	Rating 7.9 8,007 reviews	Search Delta flights
United Airlines	PriceFrom $185	Free Cancellation	Rating 7.4 9,091 reviews	Search United Airlines flights
American Airlines	PriceFrom $202	Free Cancellation	Rating 7.2 11,054 reviews	Search American Airlines flights
Southwest	PriceFrom $204	Free Cancellation	Rating 7.9 4,249 reviews	Search Southwest flights

Wildwood

Cape May

Rehoboth Beach

Ocean City

Wildwood Crest

King of Prussia

Cherry Hill

Newark

Dewey Beach

Reading

North Wildwood

Avalon

Dover

Lewes

Stone Harbor

Essington

Vineland

Pottstown

Elkton

Somers Point

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Philadelphia?

Finding the right flight to Philadelphia from Colorado is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Philadelphia quick and easy, saving you time and money.

Can I find flights from Colorado to Philadelphia with flexible booking policies on momondo?

Flights from Colorado to Philadelphia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Colorado to Philadelphia?

momondo helps you find the best flight between Colorado and Philadelphia by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Colorado to Philadelphia right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Philadelphia, momondo offers a useful price alert feature which will track prices for flights to Philadelphia from Colorado and alert you when they change.

An easier way to manage your Philadelphia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from Colorado to Philadelphia from $76

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Philadelphia departing on 1/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Frontier flights from Colorado to Philadelphia

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See travel insights to Philadelphia from

How to get the cheapest flight ticket from Colorado to Philadelphia

What is the cheapest month to fly to Philadelphia?

What is the cheapest day to depart on your flight to Philadelphia?

What is the cheapest time of day to depart on your flight to Philadelphia?

What is the cheapest Colorado to Philadelphia flight route?

Fly from Denver Intl to Philadelphia for the best Colorado - Philadelphia flight prices

How far in advance should I book a flight to Philadelphia?

What cabin class options are available on Colorado to Philadelphia flights?

There are 4 cabin classes available to choose from on Colorado to Philadelphia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Colorado to Philadelphia flights?

No. A direct flight is the cheapest option for a flight between Colorado to Philadelphia.

What is the cheapest airline that flies from Colorado to Philadelphia?

United Airlines, Southwest, and Delta are the most popular carriers operating from Colorado to Philadelphia

What airlines fly to Philadelphia?

How many flights depart from Colorado to Philadelphia on average per day?

10 flights are operational daily from Colorado to Philadelphia as of December 2025. The most popular departure time for this route is 7:00AM, with 57% of flights per day taking off at noon.

How many flights depart from Colorado to Philadelphia on average per week?

As of December 2025, there are 71 flights per week flying from Colorado to Philadelphia. The most common day of the week flights depart is Thu, with 24% of flights taking off on this day.

How long does it take to fly to Philadelphia?

If you’re flying from a popular airport in Colorado, such as Denver or Vail, and flying into Philadelphia, then you can expect flight times to average 3h 35m and 4h 05m, respectively.

Cheap Colorado to Philadelphia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Philadelphia

Best Price Found

Fastest flight time

Direct flights

Airports in Philadelphia

When did momondo last update prices for flights from Colorado to Philadelphia Airport?

How many operators does momondo search for flights from Colorado to Philadelphia Airport?

How old do you have to be to fly from Colorado to Philadelphia Airport?

What documentation or ID do you need to fly to Philadelphia Airport?

What is the most popular plane model from Colorado to Philadelphia?

Best airlines flying from Colorado to Philadelphia

Compare and see reviews for airlines that fly from Colorado to Philadelphia with momondo

Traveling to a place near Philadelphia?

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Philadelphia?

Can I find flights from Colorado to Philadelphia with flexible booking policies on momondo?

How can momondo help me find flights from Colorado to Philadelphia?

I’m not ready to book a flight from Colorado to Philadelphia right now. Can momondo alert me if prices change?

An easier way to manage your Philadelphia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Pennsylvania