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Cheap flights from Colorado to Philadelphia from $99

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 4/14. 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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0 bags

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Find the cheapest flights from Colorado to Philadelphia

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:59 am - 8:44 am
DEN
-
PHL
18h 45m
2 stops
Multiple Airlines Logo
11:52 am - 11:04 pm
PHL
-
DEN
13h 12m
1 stop
$149Multiple Airlines
Tue, Mar 3 - Tue, Mar 10
Frontier Logo
11:59 pm - 5:31 am
DEN
-
PHL
3h 32mnonstop
Frontier Logo
6:12 pm - 8:26 am
PHL
-
DEN
16h 14m
1 stop
$152Frontier
Mon, Mar 16 - Tue, Mar 17
Frontier Logo
11:59 pm - 8:07 am
DEN
-
PHL
6h 08m
1 stop
Frontier Logo
8:25 pm - 11:04 pm
PHL
-
DEN
4h 39mnonstop
$153Frontier
Wed, Mar 11 - Mon, Mar 16
Multiple Airlines Logo
12:59 am - 10:27 am
DEN
-
PHL
7h 28m
1 stop
Multiple Airlines Logo
5:26 pm - 7:39 am
PHL
-
DEN
16h 13m
2 stops
$156Multiple Airlines
Mon, Feb 23 - Tue, Mar 3
American Airlines Logo
6:37 pm - 6:39 am
DRO
-
PHL
10h 02m
1 stop
American Airlines Logo
5:00 am - 11:44 am
PHL
-
DRO
8h 44m
1 stop
$278American Airlines
Fri, Mar 6 - Mon, Mar 9
United Airlines Logo
1:41 pm - 12:16 am
DRO
-
PHL
8h 35m
2 stops
United Airlines Logo
3:30 pm - 8:58 pm
PHL
-
DRO
7h 28m
1 stop
$284United Airlines
Fri, Mar 6 - Mon, Mar 9
United Airlines Logo
1:41 pm - 12:16 am
DRO
-
PHL
8h 35m
2 stops
United Airlines Logo
12:15 pm - 8:58 pm
PHL
-
DRO
10h 43m
2 stops
$289United Airlines
Fri, Mar 6 - Mon, Mar 9
American Airlines Logo
6:37 pm - 5:35 am
DRO
-
PHL
8h 58m
1 stop
American Airlines Logo
1:40 pm - 10:15 pm
PHL
-
DRO
10h 35m
1 stop
$313American Airlines
Fri, Mar 6 - Sun, Mar 8
Delta Logo
2:13 pm - 12:24 am
MTJ
-
PHL
8h 11m
1 stop
Delta Logo
5:31 am - 1:14 pm
PHL
-
MTJ
9h 43m
1 stop
$359Delta
Sun, Feb 15 - Thu, Feb 19
Delta Logo
2:13 pm - 12:24 am
MTJ
-
PHL
8h 11m
1 stop
Delta Logo
6:55 am - 1:14 pm
PHL
-
MTJ
8h 19m
1 stop
$379Delta
Sun, Feb 15 - Thu, Feb 19

Frontier flights from Colorado to Philadelphia

Our best Frontier deals on Colorado to Philadelphia flight tickets
Frontier
Mar 16
DEN11:59 pmDenver Intl
3h 32m
PHL5:31 amPhiladelphia
Mar 17
PHL6:12 pmPhiladelphia
16h 14m
1 stop
DEN8:26 amDenver Intl
$152
Frontier
Mar 11
DEN11:59 pmDenver Intl
6h 08m
1 stop
PHL8:07 amPhiladelphia
Mar 16
PHL8:25 pmPhiladelphia
4h 39m
DEN11:04 pmDenver Intl
$153
Frontier
Mar 16
DEN11:59 pmDenver Intl
3h 32m
PHL5:31 amPhiladelphia
Mar 25
PHL12:04 pmPhiladelphia
10h 51m
1 stop
DEN8:55 pmDenver Intl
$154

United Airlines flights from Colorado to Philadelphia

Our best United Airlines deals on Colorado to Philadelphia flight tickets
United Airlines
Mar 6
DRO11:33 amDurango La Plata County
10h 43m
2 stops
PHL12:16 amPhiladelphia
Mar 9
PHL3:30 pmPhiladelphia
7h 28m
1 stop
DRO8:58 pmDurango La Plata County
$284
United Airlines
Mar 10
GJT1:40 pmGrand Junction Regnl
7h 52m
1 stop
PHL11:32 pmPhiladelphia
Mar 16
PHL3:30 pmPhiladelphia
7h 07m
1 stop
GJT8:37 pmGrand Junction Regnl
$289
United Airlines
Mar 10
GJT5:30 amGrand Junction Regnl
9h 44m
2 stops
PHL5:14 pmPhiladelphia
Mar 16
PHL3:30 pmPhiladelphia
7h 07m
1 stop
GJT8:37 pmGrand Junction Regnl
$294

momondo Fare Finder

 
Customize your flight search to find flights from Colorado to Philadelphia 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, momondo users made 832,500 searches. Data last updated February 3, 2026.
Use the filters below to find and compare flights from Colorado to Philadelphia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Tue 3/3

11:59 am-8:44 am

2 stops18h 45m

Philadelphia

Tue 3/10

11:52 am-11:04 pm

1 stop13h 12m

$149

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Mon 3/16

11:59 pm-5:31 am

Nonstop3h 32m

Philadelphia

Tue 3/17

6:12 pm-8:26 am

1 stop16h 14m

$152

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Wed 3/11

11:59 pm-8:07 am

1 stop6h 08m

Philadelphia

Mon 3/16

8:25 pm-11:04 pm

Nonstop4h 39m

$153

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Mon 2/23

12:59 am-10:27 am

1 stop7h 28m

Philadelphia

Tue 3/3

5:26 pm-7:39 am

2 stops16h 13m

$156

DurangoPhiladelphia

DRO - PHL

DROPHL

Durango La Plata County

Fri 3/6

6:37 pm-6:39 am

1 stop10h 02m

Philadelphia

Mon 3/9

5:00 am-11:44 am

1 stop8h 44m

$278

DurangoPhiladelphia

DRO - PHL

DROPHL

Durango La Plata County

Fri 3/6

1:41 pm-12:16 am

2 stops8h 35m

Philadelphia

Mon 3/9

3:30 pm-8:58 pm

1 stop7h 28m

$284

DurangoPhiladelphia

DRO - PHL

DROPHL

Durango La Plata County

Fri 3/6

1:41 pm-12:16 am

2 stops8h 35m

Philadelphia

Mon 3/9

12:15 pm-8:58 pm

2 stops10h 43m

$289

DurangoPhiladelphia

DRO - PHL

DROPHL

Durango La Plata County

Fri 3/6

6:37 pm-5:35 am

1 stop8h 58m

Philadelphia

Sun 3/8

1:40 pm-10:15 pm

1 stop10h 35m

$313

MontrosePhiladelphia

MTJ - PHL

MTJPHL

Montrose County

Sun 2/15

2:13 pm-12:24 am

1 stop8h 11m

Philadelphia

Thu 2/19

5:31 am-1:14 pm

1 stop9h 43m

$359

MontrosePhiladelphia

MTJ - PHL

MTJPHL

Montrose County

Sun 2/15

2:13 pm-12:24 am

1 stop8h 11m

Philadelphia

Thu 2/19

6:55 am-1:14 pm

1 stop8h 19m

$379

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Philadelphia from

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?

The cheapest month to fly to Philadelphia from Colorado is in September. Flight prices, which tend to average around $271, 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 Wednesday. Travelers who choose to depart for Philadelphia on a Wednesday will often find tickets for as low as $311. 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 $402.

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 $252. 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 $475.

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 $313 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?

You could potentially save up to 13% 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

$189

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 $189. The best round-trip flight deal from Colorado to Philadelphia found on momondo in the last 72 hours is $266.
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

  • 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?

  • 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?

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
FrontierPriceFrom $110Free CancellationRating
5.7
3,051 reviews
Search Frontier flights
JetBluePriceFrom $122Free CancellationRating
7.2
2,893 reviews
Search JetBlue flights
DeltaPriceFrom $128Free CancellationRating
7.9
8,138 reviews
Search Delta flights
American AirlinesPriceFrom $139Free CancellationRating
7.2
11,218 reviews
Search American Airlines flights
United AirlinesPriceFrom $178Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights
SouthwestPriceFrom $210Free CancellationRating
8.0
4,272 reviews
Search Southwest flights

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wildwood
Cape May
Rehoboth Beach
Wildwood Crest
Ocean City
King of Prussia
Cherry Hill
Newark
Dewey Beach
Reading
North Wildwood
Avalon
Dover
Lewes
Stone Harbor
Essington
Vineland
New Castle
Elkton
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.

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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