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Cheap flights from Denver to Philadelphia from $87

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Philadelphia departing on 9/15. 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 Denver to Philadelphia (DEN-PHL)

Cheap round-trip flights

Frontier Logo
12:59 am - 10:56 amDEN-PHL
7h 57m1 stop
Frontier Logo
6:45 am - 8:57 amPHL-DEN
4h 12mnonstop
$189Frontier
Find Deal
Sun, Sep 28 - Sat, Oct 4
Frontier Logo
6:00 am - 2:59 pmDEN-PHL
6h 59m1 stop
Frontier Logo
1:02 pm - 7:36 amPHL-DEN
20h 34m2 stops
$190Frontier
Find Deal
Sun, Oct 12 - Mon, Oct 20
Frontier Logo
12:04 am - 8:56 pmDEN-PHL
18h 52m1 stop
Frontier Logo
5:30 am - 3:25 pmPHL-DEN
11h 55m1 stop
$191Frontier
Find Deal
Fri, Oct 3 - Fri, Oct 10
Frontier Logo
5:50 pm - 9:25 amDEN-PHL
13h 35m1 stop
Frontier Logo
2:30 pm - 8:09 amPHL-DEN
19h 39m1 stop
$192Frontier
Find Deal
Wed, Sep 17 - Wed, Sep 24
Logo
12:59 am - 10:56 amDEN-PHL
7h 57m1 stop
Logo
2:07 pm - 9:06 amPHL-DEN
20h 59m1 stop
$196
Find Deal
Wed, Sep 17 - Mon, Sep 22
American Airlines Logo
7:00 am - 12:36 pmDEN-PHL
3h 36mnonstop
American Airlines Logo
9:20 pm - 11:25 pmPHL-DEN
4h 05mnonstop
$199American Airlines
Find Deal
Tue, Sep 23 - Mon, Sep 29
Logo
8:59 pm - 4:44 pmDEN-PHL
17h 45m2 stops
Logo
6:02 pm - 11:38 pmPHL-DEN
7h 36m1 stop
$212
Find Deal
Fri, Sep 12 - Sun, Sep 14
Southwest Logo
11:45 pm - 12:30 pmDEN-PHL
10h 45m1 stop
Southwest Logo
7:20 am - 9:30 amPHL-DEN
4h 10mnonstop
$215Southwest
Find Deal
Sat, Oct 11 - Tue, Oct 21
American Airlines Logo
11:29 am - 5:26 pmDEN-PHL
3h 57mnonstop
American Airlines Logo
8:30 am - 10:36 amPHL-DEN
4h 06mnonstop
$216American Airlines
Find Deal
Wed, Sep 17 - Wed, Sep 24
Southwest Logo
5:40 pm - 11:10 pmDEN-PHL
3h 30mnonstop
Southwest Logo
7:20 am - 9:30 amPHL-DEN
4h 10mnonstop
$229Southwest
Find Deal
Sat, Oct 11 - Wed, Oct 15

American Airlines flights from Denver to Philadelphia

Our best American Airlines deals on Denver to Philadelphia flight tickets
American Airlines
Sep 23
DEN7:00 amDenver Intl
3h 36m
PHL12:36 pmPhiladelphia
Sep 29
PHL9:20 pmPhiladelphia
4h 05m
DEN11:25 pmDenver Intl
$199
Find similar
American Airlines
Sep 17
DEN11:29 amDenver Intl
3h 57m
PHL5:26 pmPhiladelphia
Sep 24
PHL8:30 amPhiladelphia
4h 06m
DEN10:36 amDenver Intl
$216
Find similar
American Airlines
Oct 4
DEN7:00 amDenver Intl
3h 36m
PHL12:36 pmPhiladelphia
Oct 7
PHL7:40 pmPhiladelphia
4h 15m
DEN9:55 pmDenver Intl
$234
Find similar

Frontier flights from Denver to Philadelphia

Our best Frontier deals on Denver to Philadelphia flight tickets
Frontier
Sep 28
DEN12:59 amDenver Intl
7h 57m
1 stop
PHL10:56 amPhiladelphia
Oct 4
PHL6:45 amPhiladelphia
4h 12m
DEN8:57 amDenver Intl
$189
Find similar
Frontier
Oct 12
DEN6:00 amDenver Intl
6h 59m
1 stop
PHL2:59 pmPhiladelphia
Oct 20
PHL1:02 pmPhiladelphia
20h 34m
2 stops
DEN7:36 amDenver Intl
$190
Find similar
Frontier
Oct 3
DEN12:04 amDenver Intl
18h 52m
1 stop
PHL8:56 pmPhiladelphia
Oct 10
PHL5:30 amPhiladelphia
11h 55m
1 stop
DEN3:25 pmDenver Intl
$191
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Denver 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 August 21, 2025.
Use the filters below to find and compare flights from Denver to Philadelphia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Sun 9/28

12:59 am-10:56 am

1 stop7h 57m

Philadelphia

Sat 10/4

6:45 am-8:57 am

Nonstop4h 12m

$189

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Sun 10/12

6:00 am-2:59 pm

1 stop6h 59m

Philadelphia

Mon 10/20

1:02 pm-7:36 am

2 stops20h 34m

$190

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Fri 10/3

12:04 am-8:56 pm

1 stop18h 52m

Philadelphia

Fri 10/10

5:30 am-3:25 pm

1 stop11h 55m

$191

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Wed 9/17

5:50 pm-9:25 am

1 stop13h 35m

Philadelphia

Wed 9/24

2:30 pm-8:09 am

1 stop19h 39m

$192

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Wed 9/17

12:59 am-10:56 am

1 stop7h 57m

Philadelphia

Mon 9/22

2:07 pm-9:06 am

1 stop20h 59m

$196

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Tue 9/23

7:00 am-12:36 pm

Nonstop3h 36m

Philadelphia

Mon 9/29

9:20 pm-11:25 pm

Nonstop4h 05m

$199

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Fri 9/12

8:59 pm-4:44 pm

2 stops17h 45m

Philadelphia

Sun 9/14

6:02 pm-11:38 pm

1 stop7h 36m

$212

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Sat 10/11

11:45 pm-12:30 pm

1 stop10h 45m

Philadelphia

Tue 10/21

7:20 am-9:30 am

Nonstop4h 10m

$215

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Wed 9/17

11:29 am-5:26 pm

Nonstop3h 57m

Philadelphia

Wed 9/24

8:30 am-10:36 am

Nonstop4h 06m

$216

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Sat 10/11

5:40 pm-11:10 pm

Nonstop3h 30m

Philadelphia

Wed 10/15

7:20 am-9:30 am

Nonstop4h 10m

$229

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 Denver 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 Denver is in October. Flight prices, which tend to average around $271, are often lower during this time because this is during the off-season. The month of September is another great option to travel to Philadelphia, with average flight prices from Denver averaging around $273.

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

The cheapest day to depart from Denver to Philadelphia is on a Wednesday. Travelers who choose to depart for Philadelphia on a Wednesday will often find tickets for as low as $315. On the other hand, Monday is the most expensive day to depart from Denver because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $454.

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 Denver 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 $525.

What is the cheapest Denver Intl to Philadelphia flight route?

Fly from Denver Intl to Philadelphia for the best Denver Intl - 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 Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around $306 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from Denver for as low as $267 on momondo.

What cabin class options are available on Denver Intl to Philadelphia flights?

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

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

How have Denver to Philadelphia flight prices changed over time?

As of August 2025, prices for Denver to Philadelphia flights are approximately 31% more expensive when compared to flights at the same time last year.

When to book flights from Denver to Philadelphia

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to Philadelphia according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Denver to Philadelphia (DEN to PHL) flight deals and tips

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

Best Price Found

$135

Fastest flight time

3h 25m

Direct flights

Every day

Airports in Philadelphia

1 airport
The best one-way flight to Philadelphia from Denver in the past 72 hours is $135. The best round-trip flight deal from Denver to Philadelphia found on momondo in the last 72 hours is $255.
The fastest flight from Denver to Philadelphia takes 3h 25m
Direct flights go from Denver to Philadelphia every day.
There is 1 airport near Philadelphia: Philadelphia (PHL)
Search flight deals

  • How far is Denver Intl to Philadelphia by plane?

    Denver Intl and Philadelphia are 1574.0 mi apart from one another. Typically, this will take 3h 30m by plane in normal conditions.

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

    Prices for flights from Denver Intl Airport to Philadelphia Airport are refreshed on a daily basis.

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

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

  • What is the most popular airline from Denver to Philadelphia?

Best airlines flying from Denver to Philadelphia

Compare and see reviews for airlines that fly from Denver to Philadelphia with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $112Free CancellationRating
5.8
3,207 reviews
Search Frontier flights
DeltaPriceFrom $128Free CancellationRating
7.9
7,981 reviews
Search Delta flights
United AirlinesPriceFrom $187Free CancellationRating
7.4
8,930 reviews
Search United Airlines flights
American AirlinesPriceFrom $196Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $200Free CancellationRating
8.0
4,245 reviews
Search Southwest flights
JetBluePriceFrom $228Free CancellationRating
7.2
2,916 reviews
Search JetBlue flights

  • Southwest Flights From Denver to Philadelphia

    Southwest flight deals from Denver to Philadelphia start from $200 round-trip. Over the 16 Southwest flights for this route in a normal week, average airfare is usually $347 round-trip - but some users have found much cheaper deals with momondo.

  • United Airlines Flights From Denver to Philadelphia

    $187 is the best United Airlines flight deal from Denver to Philadelphia found on momondo over the last 72 hours. The average United Airlines ticket price found was closer to $439, however, with flight time and availability significantly affecting the price. United Airlines (7.4/10 from 8,930 user reviews) flies into Philadelphia from Denver 15 times in an average week so prices can vary.

Traveling to a place near Philadelphia?

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

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Philadelphia from Denver.

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

Yes. momondo allows you to filter the results for Denver to Philadelphia flights to just show those with flexible booking policies.

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

Once you have performed a search for Denver to Philadelphia flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Philadelphia from Denver are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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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