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 46% 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 day?

18 flights are operational daily from Colorado to Philadelphia as of June 2026. The most popular departure time for this route is 8:00AM, with 46% of flights per day taking off at noon.

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

As of June 2026, there are 127 flights per week flying from Colorado to Philadelphia. The most common day of the week flights depart is Fri, with 17% of flights taking off on this day.

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

Frontier, Allegiant Air, and American Airlines are the most popular carriers operating from Colorado to Philadelphia

How long does it take to fly to Philadelphia?

If you’re flying from a popular airport in Colorado, such as Denver or Grand Junction, and flying into Philadelphia, then you can expect flight times to average 3h 32m and 6h 46m, respectively.

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 June 2026, 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.

$132 Cheap Flights from Colorado to Philadelphia in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Colorado to Philadelphia

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:59 pm - 8:39 am

DEN

PHL

6h 40m

1 stop

12:44 pm - 2:58 pm

PHL

DEN

4h 14mnonstop

$268Frontier

Fri, Jul 17 - Wed, Jul 22

11:37 pm - 8:22 am

DEN

PHL

6h 45m

1 stop

12:44 pm - 2:58 pm

PHL

DEN

4h 14mnonstop

$269Multiple Airlines

Thu, Aug 13 - Sun, Aug 16

11:59 pm - 5:38 am

DEN

PHL

3h 39mnonstop

11:06 am - 9:41 pm

PHL

DEN

12h 35m

1 stop

$270Frontier

Fri, Jul 3 - Tue, Jul 7

10:12 am - 9:03 pm

COS

PHL

8h 51m

1 stop

5:00 am - 9:22 am

PHL

COS

6h 22m

1 stop

$333American Airlines

Sat, Sep 5 - Wed, Sep 9

1:20 pm - 11:42 pm

COS

PHL

8h 22m

1 stop

9:35 am - 7:56 pm

PHL

COS

12h 21m

2 stops

$338Delta

Sat, Sep 5 - Wed, Sep 9

3:41 pm - 12:35 am

COS

PHL

6h 54m

1 stop

5:00 am - 9:52 am

PHL

COS

6h 52m

1 stop

$342American Airlines

Tue, Jul 14 - Wed, Jul 22

5:55 pm - 5:41 am

COS

PHL

9h 46m

1 stop

5:30 am - 12:58 pm

PHL

COS

9h 28m

1 stop

$343Delta

Wed, Oct 7 - Wed, Oct 14

1:15 pm - 8:55 pm

COS

PHL

5h 40m

1 stop

1:45 pm - 9:45 pm

PHL

COS

10h 00m

2 stops

$347Southwest

Tue, Aug 18 - Tue, Aug 25

6:00 am - 7:24 pm

COS

PHL

11h 24m

2 stops

5:30 am - 12:58 pm

PHL

COS

9h 28m

1 stop

$348Delta

Wed, Oct 7 - Wed, Oct 14

6:55 am - 8:55 pm

COS

PHL

12h 00m

2 stops

2:45 pm - 9:45 pm

PHL

COS

9h 00m

2 stops

$361Southwest

Tue, Aug 18 - Tue, Aug 25

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Delta flights from Colorado to Philadelphia

Our best Delta deals on Colorado to Philadelphia flight tickets

Delta

Sep 5

COS1:20 pmColorado Springs

8h 22m

1 stop

PHL11:42 pmPhiladelphia

Sep 9

PHL9:35 amPhiladelphia

12h 21m

2 stops

COS7:56 pmColorado Springs

$338

Delta

Oct 7

COS5:55 pmColorado Springs

9h 46m

1 stop

PHL5:41 amPhiladelphia

Oct 14

PHL5:30 amPhiladelphia

9h 28m

1 stop

COS12:58 pmColorado Springs

$343

Delta

Oct 7

COS6:00 amColorado Springs

11h 24m

2 stops

PHL7:24 pmPhiladelphia

Oct 14

PHL5:30 amPhiladelphia

9h 28m

1 stop

COS12:58 pmColorado Springs

$348

Southwest flights from Colorado to Philadelphia

Our best Southwest deals on Colorado to Philadelphia flight tickets

Southwest

Aug 18

COS1:15 pmColorado Springs

5h 40m

1 stop

PHL8:55 pmPhiladelphia

Aug 25

PHL1:45 pmPhiladelphia

10h 00m

2 stops

COS9:45 pmColorado Springs

$347

Southwest

Aug 18

COS6:55 amColorado Springs

12h 00m

2 stops

PHL8:55 pmPhiladelphia

Aug 25

PHL2:45 pmPhiladelphia

9h 00m

2 stops

COS9:45 pmColorado Springs

$361

Southwest

Sep 28

COS4:20 pmColorado Springs

5h 25m

1 stop

PHL11:45 pmPhiladelphia

Sep 30

PHL5:10 pmPhiladelphia

6h 35m

1 stop

COS9:45 pmColorado Springs

$373

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Fri 7/17

11:59 pm-8:39 am

1 stop6h 40m

Philadelphia

Wed 7/22

12:44 pm-2:58 pm

Nonstop4h 14m

$268

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Thu 8/13

11:37 pm-8:22 am

1 stop6h 45m

Philadelphia

Sun 8/16

12:44 pm-2:58 pm

Nonstop4h 14m

$269

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Fri 7/3

11:59 pm-5:38 am

Nonstop3h 39m

Philadelphia

Tue 7/7

11:06 am-9:41 pm

1 stop12h 35m

$270

Colorado SpringsPhiladelphia

COS - PHL

COSPHL

Colorado Springs

Sat 9/5

10:12 am-9:03 pm

1 stop8h 51m

Philadelphia

Wed 9/9

5:00 am-9:22 am

1 stop6h 22m

$333

Colorado SpringsPhiladelphia

COS - PHL

COSPHL

Colorado Springs

Sat 9/5

1:20 pm-11:42 pm

1 stop8h 22m

Philadelphia

Wed 9/9

9:35 am-7:56 pm

2 stops12h 21m

$338

Colorado SpringsPhiladelphia

COS - PHL

COSPHL

Colorado Springs

Tue 7/14

3:41 pm-12:35 am

1 stop6h 54m

Philadelphia

Wed 7/22

5:00 am-9:52 am

1 stop6h 52m

$342

Colorado SpringsPhiladelphia

COS - PHL

COSPHL

Colorado Springs

Wed 10/7

5:55 pm-5:41 am

1 stop9h 46m

Philadelphia

Wed 10/14

5:30 am-12:58 pm

1 stop9h 28m

$343

Colorado SpringsPhiladelphia

COS - PHL

COSPHL

Colorado Springs

Tue 8/18

1:15 pm-8:55 pm

1 stop5h 40m

Philadelphia

Tue 8/25

1:45 pm-9:45 pm

2 stops10h 00m

$347

Colorado SpringsPhiladelphia

COS - PHL

COSPHL

Colorado Springs

Wed 10/7

6:00 am-7:24 pm

2 stops11h 24m

Philadelphia

Wed 10/14

5:30 am-12:58 pm

1 stop9h 28m

$348

Colorado SpringsPhiladelphia

COS - PHL

COSPHL

Colorado Springs

Tue 8/18

6:55 am-8:55 pm

2 stops12h 00m

Philadelphia

Tue 8/25

2:45 pm-9:45 pm

2 stops9h 00m

$361

Flights are sorted by cheapest round-trip flights first.

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 April. Flight prices, which tend to average around $58, are often lower during this time because this is during the off-season. The month of November is another great option to travel to Philadelphia, with average flight prices from Colorado averaging around $59.

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 $368. 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 $506.

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 evening. momondo users have found flights departing from Colorado to Philadelphia in the evening for as low as $273. 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 $469.

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 from Colorado 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 $344 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 $265 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?

You could potentially save up to 26% on your flight if you consider stops on a Colorado to Philadelphia flight.

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	$187
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 $187. The best round-trip flight deal from Colorado to Philadelphia found on momondo in the last 72 hours is $342.

The fastest flight from Colorado to Philadelphia takes 3h 20m

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

Frequently asked questions about flying 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 June 2026, 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 (24.34% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (19.68%), Airbus A320neo (10.54%), and Boeing 737-800 Passenger/BBJ2 (winglets) (9.56%).

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 $118	Free Cancellation	Rating 5.6 2,870 reviews	Search Frontier flights
JetBlue	PriceFrom $122	Free Cancellation	Rating 7.1 3,001 reviews	Search JetBlue flights
Delta	PriceFrom $128	Free Cancellation	Rating 7.8 8,428 reviews	Search Delta flights
American Airlines	PriceFrom $139	Free Cancellation	Rating 7.1 11,747 reviews	Search American Airlines flights
United Airlines	PriceFrom $199	Free Cancellation	Rating 7.4 9,874 reviews	Search United Airlines flights
Southwest	PriceFrom $216	Free Cancellation	Rating 7.9 4,242 reviews	Search Southwest flights

Wildwood

Rehoboth Beach

Cape May

Wildwood Crest

Ocean City

Cherry Hill

King of Prussia

Newark

Reading

Dewey Beach

Dover

North Wildwood

Essington

Avalon

New Castle

Lewes

Stone Harbor

Vineland

Chester

Pottstown

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.