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Cheap flights from Philadelphia to Colorado from $84

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Colorado departing on 5/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Philadelphia to Colorado

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:35 pm - 11:04 pm
PHL
-
DEN
4h 29mnonstop
Frontier Logo
9:06 pm - 3:16 pm
DEN
-
PHL
16h 10m
1 stop
$119Frontier
Sat, May 30 - Thu, Jun 4
Frontier Logo
8:35 pm - 11:04 pm
PHL
-
DEN
4h 29mnonstop
Frontier Logo
11:54 pm - 12:25 pm
DEN
-
PHL
10h 31m
1 stop
$120Frontier
Thu, May 28 - Sat, Jun 6
American Airlines Logo
3:21 pm - 10:25 pm
PHL
-
COS
9h 04m
1 stop
American Airlines Logo
1:39 pm - 12:11 am
COS
-
PHL
8h 32m
1 stop
$219American Airlines
Tue, May 12 - Tue, May 19
American Airlines Logo
7:05 am - 12:49 pm
PHL
-
COS
7h 44m
1 stop
American Airlines Logo
1:39 pm - 12:11 am
COS
-
PHL
8h 32m
1 stop
$275American Airlines
Tue, May 12 - Tue, May 19
Delta Logo
4:10 pm - 9:54 pm
PHL
-
COS
7h 44m
1 stop
Delta Logo
11:10 am - 12:59 am
COS
-
PHL
11h 49m
2 stops
$293Delta
Tue, Jun 9 - Tue, Jun 16
United Airlines Logo
8:00 am - 12:33 pm
PHL
-
HDN
6h 33m
1 stop
United Airlines Logo
3:20 pm - 11:30 pm
HDN
-
PHL
6h 10m
1 stop
$309United Airlines
Sat, May 16 - Sat, May 23
United Airlines Logo
8:00 am - 12:33 pm
PHL
-
HDN
6h 33m
1 stop
United Airlines Logo
1:20 pm - 12:57 am
HDN
-
PHL
9h 37m
2 stops
$314United Airlines
Sat, May 16 - Sat, May 23
Delta Logo
3:44 pm - 10:00 pm
PHL
-
GJT
8h 16m
2 stops
Delta Logo
6:51 pm - 6:10 am
GJT
-
PHL
9h 19m
1 stop
$334Delta
Thu, May 28 - Thu, Jun 4
Southwest Logo
5:00 am - 8:55 am
PHL
-
COS
5h 55m
1 stop
Southwest Logo
5:10 pm - 1:00 am
COS
-
PHL
5h 50m
1 stop
$339Southwest
Fri, Jun 5 - Tue, Jun 9
Southwest Logo
2:00 pm - 9:45 pm
PHL
-
COS
9h 45m
2 stops
Southwest Logo
5:10 pm - 1:00 am
COS
-
PHL
5h 50m
1 stop
$344Southwest
Fri, Jun 5 - Tue, Jun 9

Frontier flights from Philadelphia to Colorado

Our best Frontier deals on Philadelphia to Colorado flight tickets
Frontier
May 30
PHL8:35 pmPhiladelphia
4h 29m
DEN11:04 pmDenver Intl
Jun 4
DEN9:06 pmDenver Intl
16h 10m
1 stop
PHL3:16 pmPhiladelphia
$119
Frontier
May 28
PHL8:35 pmPhiladelphia
4h 29m
DEN11:04 pmDenver Intl
Jun 6
DEN11:54 pmDenver Intl
10h 31m
1 stop
PHL12:25 pmPhiladelphia
$120
Frontier
May 7
PHL8:35 pmPhiladelphia
4h 29m
DEN11:04 pmDenver Intl
May 10
DEN11:59 pmDenver Intl
3h 38m
PHL5:37 amPhiladelphia
$121

American Airlines flights from Philadelphia to Colorado

Our best American Airlines deals on Philadelphia to Colorado flight tickets
American Airlines
Jun 9
PHL5:00 amPhiladelphia
6h 54m
1 stop
COS9:54 amColorado Springs
Jun 16
COS3:45 pmColorado Springs
6h 51m
1 stop
PHL12:36 amPhiladelphia
$219
American Airlines
May 12
PHL7:05 amPhiladelphia
7h 44m
1 stop
COS12:49 pmColorado Springs
May 19
COS1:39 pmColorado Springs
8h 32m
1 stop
PHL12:11 amPhiladelphia
$275
American Airlines
May 29
PHL5:00 amPhiladelphia
6h 54m
1 stop
COS9:54 amColorado Springs
Jun 6
COS5:35 amColorado Springs
6h 45m
1 stop
PHL2:20 pmPhiladelphia
$315

momondo Fare Finder

 
Customize your flight search to find flights from Philadelphia to Colorado 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 April 21, 2026.
Use the filters below to find and compare flights from Philadelphia to Colorado that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 5/30

8:35 pm-11:04 pm

Nonstop4h 29m

Denver Intl

Thu 6/4

9:06 pm-3:16 pm

1 stop16h 10m

$119

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Thu 5/28

8:35 pm-11:04 pm

Nonstop4h 29m

Denver Intl

Sat 6/6

11:54 pm-12:25 pm

1 stop10h 31m

$120

PhiladelphiaColorado Springs

PHL - COS

PHLCOS

Philadelphia

Tue 5/12

3:21 pm-10:25 pm

1 stop9h 04m

Colorado Springs

Tue 5/19

1:39 pm-12:11 am

1 stop8h 32m

$219

PhiladelphiaColorado Springs

PHL - COS

PHLCOS

Philadelphia

Tue 5/12

7:05 am-12:49 pm

1 stop7h 44m

Colorado Springs

Tue 5/19

1:39 pm-12:11 am

1 stop8h 32m

$275

PhiladelphiaColorado Springs

PHL - COS

PHLCOS

Philadelphia

Tue 6/9

4:10 pm-9:54 pm

1 stop7h 44m

Colorado Springs

Tue 6/16

11:10 am-12:59 am

2 stops11h 49m

$293

PhiladelphiaHayden

PHL - HDN

PHLHDN

Philadelphia

Sat 5/16

8:00 am-12:33 pm

1 stop6h 33m

Hayden Yampa Valley

Sat 5/23

3:20 pm-11:30 pm

1 stop6h 10m

$309

PhiladelphiaHayden

PHL - HDN

PHLHDN

Philadelphia

Sat 5/16

8:00 am-12:33 pm

1 stop6h 33m

Hayden Yampa Valley

Sat 5/23

1:20 pm-12:57 am

2 stops9h 37m

$314

PhiladelphiaGrand Junction

PHL - GJT

PHLGJT

Philadelphia

Thu 5/28

3:44 pm-10:00 pm

2 stops8h 16m

Grand Junction Regnl

Thu 6/4

6:51 pm-6:10 am

1 stop9h 19m

$334
Quickest round-trip

PhiladelphiaColorado Springs

PHL - COS

PHLCOS

Philadelphia

Fri 6/5

5:00 am-8:55 am

1 stop5h 55m

Colorado Springs

Tue 6/9

5:10 pm-1:00 am

1 stop5h 50m

$339

PhiladelphiaColorado Springs

PHL - COS

PHLCOS

Philadelphia

Fri 6/5

2:00 pm-9:45 pm

2 stops9h 45m

Colorado Springs

Tue 6/9

5:10 pm-1:00 am

1 stop5h 50m

$344

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 Colorado from

How to get the cheapest flight ticket from Philadelphia to Colorado

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 Colorado?

The month of August is, on average, the cheapest month to fly to Colorado from Philadelphia, with most prices found around $279. The month of July is another great option to travel to Colorado, with average flight prices from Philadelphia averaging around $283.

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

The cheapest day to depart from Philadelphia to Colorado is on a Friday when prices can be found for as low as $327. On the other hand, Sunday is the most expensive day to depart from Philadelphia because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $407.

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

The cheapest time of day to fly to Colorado is in the evening when flights can be purchased for as low as $273. In the afternoon is when there is more demand to fly to Colorado, so prices are often more expensive at around $416 per ticket.

What is the cheapest Philadelphia to Colorado flight route?

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

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

You are more likely to see cheaper flights to Colorado from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Colorado for around $321 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Colorado from Philadelphia for as low as $247 on momondo.

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

There are 4 cabin classes available to choose from on Philadelphia to Colorado 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 Philadelphia to Colorado flights?

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

Cheap Philadelphia to Colorado flight deals and tips

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

Best Price Found

$148

Fastest flight time

3h 50m

Direct flights

Every day

Airports in Colorado

87 airports
The best one-way flight to Colorado from Philadelphia in the past 72 hours is $148. The best round-trip flight deal from Philadelphia to Colorado found on momondo in the last 72 hours is $280.
The fastest flight from Philadelphia to Colorado takes 3h 50m
Direct flights go from Philadelphia to Colorado every day.
There are 87 airports in Colorado. From Philadelphia there are direct flights to Denver Intl (DEN).
Search flight deals

Frequently asked questions about flying from Philadelphia to Colorado

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

    Prices for flights from Philadelphia Airport to Colorado are updated daily.

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

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

    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 Philadelphia Airport to Colorado.

  • What documentation or ID do you need to fly to Colorado?

    The necessary travel and health documents for your Colorado trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Philadelphia to Colorado

Compare and see reviews for airlines that fly from Philadelphia to Colorado with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $95Free CancellationRating
5.6
2,983 reviews
Search Frontier flights
Allegiant AirPriceFrom $106Free CancellationRating
7.3
706 reviews
Search Allegiant Air flights
DeltaPriceFrom $128Free CancellationRating
7.9
8,425 reviews
Search Delta flights
SouthwestPriceFrom $187Free CancellationRating
8.0
4,330 reviews
Search Southwest flights
United AirlinesPriceFrom $189Free CancellationRating
7.4
9,608 reviews
Search United Airlines flights
American AirlinesPriceFrom $208Free CancellationRating
7.1
11,635 reviews
Search American Airlines flights
JetBluePriceFrom $220Free CancellationRating
7.2
2,947 reviews
Search JetBlue flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Philadelphia to Colorado. momondo saves you time and could save you money on your trip.

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

Yes. momondo enables you to select and highlight flights to Colorado from Philadelphia with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Colorado from Philadelphia.

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

If you are not ready to book a flight from Philadelphia to Colorado now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Colorado and let you know when they change.

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