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 39% 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 November 2025, there are 80 flights per week flying from Colorado to Philadelphia. The most common day of the week flights depart is Wed, with 18% 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 Colorado Springs, and flying into Philadelphia, then you can expect flight times to average 3h 32m and 6h 37m, respectively.

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

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

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

11 flights are operational daily from Colorado to Philadelphia as of November 2025. The most popular departure time for this route is 1:00PM, with 55% of flights per day taking off in the afternoon.

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 November 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.

$89 Cheap Flights from Colorado to Philadelphia in 2025/26

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Cheap round-trip flights

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11:15 pm - 4:45 amDEN-PHL

3h 30mnonstop

8:36 pm - 10:59 pmPHL-DEN

4h 23mnonstop

$183Frontier

Find Deal

Wed, Nov 26 - Fri, Dec 5

12:59 am - 2:09 pmDEN-PHL

11h 10m1 stop

8:30 am - 2:28 pmPHL-DEN

7h 58m1 stop

$184Frontier

Find Deal

Tue, Feb 17 - Wed, Mar 4

12:59 am - 10:50 amDEN-PHL

7h 51m1 stop

8:54 pm - 12:21 pmPHL-DEN

17h 27m2 stops

$190Multiple Airlines

Find Deal

Mon, Dec 15 - Tue, Jan 6

8:45 pm - 8:37 amDEN-PHL

9h 52m1 stop

6:00 am - 8:13 pmPHL-DEN

16h 13m2 stops

$193Multiple Airlines

Find Deal

Sat, Nov 22 - Wed, Dec 3

5:50 pm - 11:22 pmDEN-PHL

3h 32mnonstop

3:35 pm - 5:55 pmPHL-DEN

4h 20mnonstop

$198United Airlines

Find Deal

Fri, Dec 5 - Sat, Dec 6

7:00 am - 12:40 pmDEN-PHL

3h 40mnonstop

10:58 am - 1:35 pmPHL-DEN

4h 37mnonstop

$204American Airlines

Find Deal

Wed, Feb 18 - Tue, Feb 24

9:40 am - 5:20 pmDEN-PHL

5h 40m1 stop

6:35 am - 8:45 amPHL-DEN

4h 10mnonstop

$215Southwest

Find Deal

Tue, Dec 2 - Wed, Dec 10

1:36 pm - 11:30 pmHDN-PHL

7h 54m1 stop

8:00 am - 2:28 pmPHL-HDN

8h 28m1 stop

$306United Airlines

Find Deal

Wed, Feb 25 - Sun, Mar 1

5:30 am - 2:38 pmGJT-PHL

7h 08m1 stop

3:56 pm - 9:43 pmPHL-GJT

7h 47m1 stop

$319American Airlines

Find Deal

Tue, Nov 18 - Sat, Nov 22

5:15 am - 5:20 pmCOS-PHL

10h 05m2 stops

2:10 pm - 10:40 pmPHL-COS

10h 30m2 stops

$462Southwest

Find Deal

Mon, Dec 8 - Sun, Dec 14

United Airlines flights from Colorado to Philadelphia

Our best United Airlines deals on Colorado to Philadelphia flight tickets

United Airlines

Dec 5

DEN5:50 pmDenver Intl

3h 32m

PHL11:22 pmPhiladelphia

Dec 6

PHL3:35 pmPhiladelphia

4h 20m

DEN5:55 pmDenver Intl

$198

Find similar

United Airlines

Feb 25

HDN1:36 pmHayden Yampa Valley

7h 54m

1 stop

PHL11:30 pmPhiladelphia

Mar 1

PHL8:00 amPhiladelphia

8h 28m

1 stop

HDN2:28 pmHayden Yampa Valley

$306

Find similar

United Airlines

Feb 25

HDN3:30 pmHayden Yampa Valley

6h 00m

1 stop

PHL11:30 pmPhiladelphia

Mar 1

PHL10:06 amPhiladelphia

12h 21m

2 stops

HDN8:27 pmHayden Yampa Valley

$322

Find similar

Frontier flights from Colorado to Philadelphia

Our best Frontier deals on Colorado to Philadelphia flight tickets

Frontier

Nov 26

DEN11:15 pmDenver Intl

3h 30m

PHL4:45 amPhiladelphia

Dec 5

PHL8:36 pmPhiladelphia

4h 23m

DEN10:59 pmDenver Intl

$183

Find similar

Frontier

Feb 17

DEN12:59 amDenver Intl

11h 10m

1 stop

PHL2:09 pmPhiladelphia

Mar 4

PHL8:30 amPhiladelphia

7h 58m

1 stop

DEN2:28 pmDenver Intl

$184

Find similar

Frontier

Nov 26

DEN11:59 pmDenver Intl

9h 21m

1 stop

PHL11:20 amPhiladelphia

Dec 1

PHL5:59 pmPhiladelphia

51h 10m

2 stops

DEN7:09 pmDenver Intl

$185

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Wed 11/26

11:15 pm-4:45 am

Nonstop3h 30m

Philadelphia

Fri 12/5

8:36 pm-10:59 pm

Nonstop4h 23m

$183

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Tue 2/17

12:59 am-2:09 pm

1 stop11h 10m

Philadelphia

Wed 3/4

8:30 am-2:28 pm

1 stop7h 58m

$184

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Mon 12/15

12:59 am-10:50 am

1 stop7h 51m

Philadelphia

Tue 1/6

8:54 pm-12:21 pm

2 stops17h 27m

$190

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Sat 11/22

8:45 pm-8:37 am

1 stop9h 52m

Philadelphia

Wed 12/3

6:00 am-8:13 pm

2 stops16h 13m

$193

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Fri 12/5

5:50 pm-11:22 pm

Nonstop3h 32m

Philadelphia

Sat 12/6

3:35 pm-5:55 pm

Nonstop4h 20m

$198

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Wed 2/18

7:00 am-12:40 pm

Nonstop3h 40m

Philadelphia

Tue 2/24

10:58 am-1:35 pm

Nonstop4h 37m

$204

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Tue 12/2

9:40 am-5:20 pm

1 stop5h 40m

Philadelphia

Wed 12/10

6:35 am-8:45 am

Nonstop4h 10m

$215

HaydenPhiladelphia

HDN - PHL

HDNPHL

Hayden Yampa Valley

Wed 2/25

1:36 pm-11:30 pm

1 stop7h 54m

Philadelphia

Sun 3/1

8:00 am-2:28 pm

1 stop8h 28m

$306

Grand JunctionPhiladelphia

GJT - PHL

GJTPHL

Grand Junction Regnl

Tue 11/18

5:30 am-2:38 pm

1 stop7h 08m

Philadelphia

Sat 11/22

3:56 pm-9:43 pm

1 stop7h 47m

$319

Colorado SpringsPhiladelphia

COS - PHL

COSPHL

Colorado Springs

Mon 12/8

5:15 am-5:20 pm

2 stops10h 05m

Philadelphia

Sun 12/14

2:10 pm-10:40 pm

2 stops10h 30m

$462

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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 $315. On the other hand, Monday 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 $427.

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 $247. 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 $489.

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 $310 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 $268 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	$135
Fastest flight time	3h 20m
Direct flights	Every day
Airports in Philadelphia	1 airport

The best one-way flight to Philadelphia from Colorado in the past 72 hours is $135. 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 20m

Direct flights go from Colorado to Philadelphia every day.

There is 1 airport near Philadelphia: 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 November 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 (23.47% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (18.96%), Airbus A321-100/200 (10.41%), and Boeing 737-800 Passenger/BBJ2 (winglets) (9.80%).

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
JetBlue	PriceFrom $122	Free Cancellation	Rating 7.2 2,907 reviews	Search JetBlue flights
Frontier	PriceFrom $123	Free Cancellation	Rating 5.8 3,115 reviews	Search Frontier flights
Delta	PriceFrom $128	Free Cancellation	Rating 7.9 8,004 reviews	Search Delta flights
United Airlines	PriceFrom $189	Free Cancellation	Rating 7.4 9,000 reviews	Search United Airlines flights
American Airlines	PriceFrom $200	Free Cancellation	Rating 7.2 11,040 reviews	Search American Airlines flights
Southwest	PriceFrom $201	Free Cancellation	Rating 8.0 4,239 reviews	Search Southwest flights

Wildwood

Cape May

Rehoboth Beach

Ocean City

Wildwood Crest

King of Prussia

Cherry Hill

Dewey Beach

Newark

Reading

North Wildwood

Dover

Avalon

Lewes

Stone Harbor

Essington

Vineland

Pottstown

New Castle

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 $89

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 12/5. 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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United Airlines flights from Colorado to Philadelphia

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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

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?

Frontier, United Airlines, and Southwest 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?

11 flights are operational daily from Colorado to Philadelphia as of November 2025. The most popular departure time for this route is 1:00PM, with 55% of flights per day taking off in the afternoon.

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

As of November 2025, there are 80 flights per week flying from Colorado to Philadelphia. The most common day of the week flights depart is Wed, with 18% 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 Colorado Springs, and flying into Philadelphia, then you can expect flight times to average 3h 32m and 6h 37m, 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