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Cheap flights from Philadelphia to Denver from $53

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 Denver departing on 8/21. 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 Philadelphia to Denver

Cheap round-trip flights

Frontier Logo
1:14 pm - 8:55 pmPHL-DEN
9h 41m1 stop
Frontier Logo
1:11 pm - 1:09 amDEN-PHL
9h 58m1 stop
$114Frontier
Find Deal
Thu, Aug 21 - Mon, Aug 25
Frontier Logo
11:49 am - 7:17 pmPHL-DEN
9h 28m1 stop
Frontier Logo
12:34 am - 3:05 pmDEN-PHL
12h 31m1 stop
$115Frontier
Find Deal
Tue, Aug 5 - Fri, Aug 22
Frontier Logo
1:14 pm - 8:55 pmPHL-DEN
9h 41m1 stop
Frontier Logo
12:34 am - 12:08 pmDEN-PHL
9h 34m1 stop
$117Frontier
Find Deal
Thu, Aug 21 - Sat, Aug 23
Frontier Logo
5:48 pm - 8:53 amPHL-DEN
17h 05m1 stop
Frontier Logo
12:34 am - 1:39 amDEN-PHL
23h 05m1 stop
$118Frontier
Find Deal
Mon, Aug 4 - Fri, Aug 22
Frontier Logo
6:00 am - 2:42 pmPHL-DEN
10h 42m1 stop
Frontier Logo
12:59 am - 10:54 amDEN-PHL
7h 55m1 stop
$119Frontier
Find Deal
Mon, Aug 25 - Sun, Sep 7
Frontier Logo
5:25 am - 11:56 pmPHL-DEN
20h 31m1 stop
Frontier Logo
12:59 am - 11:24 amDEN-PHL
8h 25m1 stop
$120Frontier
Find Deal
Sun, Aug 3 - Tue, Aug 5
Frontier Logo
1:02 pm - 9:26 pmPHL-DEN
10h 24m1 stop
Frontier Logo
2:47 pm - 12:51 amDEN-PHL
8h 04m1 stop
$121Frontier
Find Deal
Thu, Oct 9 - Mon, Oct 13
Frontier Logo
6:15 am - 8:28 amPHL-DEN
4h 13mnonstop
Frontier Logo
12:34 am - 3:05 pmDEN-PHL
12h 31m1 stop
$122Frontier
Find Deal
Tue, Aug 5 - Fri, Aug 22
Frontier Logo
11:24 am - 7:58 pmPHL-DEN
10h 34m1 stop
Frontier Logo
6:05 am - 4:37 pmDEN-PHL
8h 32m1 stop
$126Frontier
Find Deal
Sun, Sep 21 - Thu, Sep 25
Frontier Logo
3:18 pm - 11:11 pmPHL-DEN
9h 53m1 stop
Frontier Logo
6:06 am - 4:48 pmDEN-PHL
8h 42m1 stop
$127Frontier
Find Deal
Wed, Jul 30 - Thu, Aug 7

Frontier flights from Philadelphia to Denver

Our best Frontier deals on Philadelphia to Denver flight tickets
Frontier
Aug 21
PHL1:14 pmPhiladelphia
9h 41m
1 stop
DEN8:55 pmDenver Intl
Aug 25
DEN1:11 pmDenver Intl
9h 58m
1 stop
PHL1:09 amPhiladelphia
Frontier
Aug 5
PHL11:49 amPhiladelphia
9h 28m
1 stop
DEN7:17 pmDenver Intl
Aug 22
DEN12:34 amDenver Intl
12h 31m
1 stop
PHL3:05 pmPhiladelphia
Frontier
Aug 21
PHL1:14 pmPhiladelphia
9h 41m
1 stop
DEN8:55 pmDenver Intl
Aug 23
DEN12:34 amDenver Intl
9h 34m
1 stop
PHL12:08 pmPhiladelphia

See travel insights to Denver from

How to get the cheapest flight ticket from Philadelphia to Denver

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 Denver?

The cheapest month to fly to Denver from Philadelphia is in September. Flight prices, which tend to average around $243, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in September, then you should wait until October to fly from Philadelphia, when ticket prices are also cheap, with an average price of $267.

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

The cheapest day to depart on your flight to Denver is on a Wednesday when prices can be found for as low as $332. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Sunday, with ticket prices averaging around $400.

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

The cheapest time of day to fly to Denver is in the evening when flights can be purchased for as low as $237. Flights in the afternoon are often more expensive with an average ticket price of $430.

What is the cheapest Philadelphia to Denver Intl flight route?

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

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

You are more likely to see cheaper flights to Denver from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $306 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Philadelphia for as low as $264 on momondo.

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

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

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

How have Philadelphia to Denver flight prices changed over time?

As of July 2025, prices for Philadelphia to Denver flights are approximately 3% cheaper when compared to flights at the same time last year.

When to book flights from Philadelphia to Denver

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

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

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

Best Price Found

$53

Fastest flight time

4h 10m

Direct flights

Every day

Airports in Denver

1 airport
The best one-way flight to Denver from Philadelphia in the past 72 hours is $53. The best round-trip flight deal from Philadelphia to Denver found on momondo in the last 72 hours is $114.
The fastest flight from Philadelphia to Denver takes 4h 10m
Direct flights go from Philadelphia to Denver every day.
There is 1 airport near Denver: Denver Intl (DEN)

  • How far is Philadelphia to Denver Intl by plane?

    The distance between Philadelphia and Denver Intl is about 1574.0 mi. A reasonable flight in good conditions will take 4h 12m.

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

    Prices for flights from Philadelphia Airport to Denver Intl Airport refresh daily.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Philadelphia Airport to Denver Intl Airport.

  • What documentation or ID do you need to fly to Denver Intl Airport?

    The required travel and health documents for your Denver Intl 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 Denver Intl 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 Philadelphia to Denver?

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


Best airlines flying from Philadelphia to Denver

Compare and see reviews for airlines that fly from Philadelphia to Denver with momondo
Airline
Rating
Free Cancellation
Price
Sun Country AirPriceFrom $82Free CancellationRating
6.9
340 reviews
Search Sun Country Air flights
FrontierPriceFrom $90Free CancellationRating
5.9
3,290 reviews
Search Frontier flights
Allegiant AirPriceFrom $106Free CancellationRating
7.2
709 reviews
Search Allegiant Air flights
DeltaPriceFrom $134Free CancellationRating
8.0
7,983 reviews
Search Delta flights
American AirlinesPriceFrom $182Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $190Free CancellationRating
7.4
8,861 reviews
Search United Airlines flights
SouthwestPriceFrom $193Free CancellationRating
8.0
4,272 reviews
Search Southwest flights
JetBluePriceFrom $207Free CancellationRating
7.3
2,918 reviews
Search JetBlue flights
  • Southwest Flights From Philadelphia to Denver

    The lowest priced Southwest flight from Philadelphia to Denver from the last 72 hours was $193. Generally, Southwest has 12 flights on this route every week with an average price of $341. Southwest is rated 8.0/10 by our users.

  • United Airlines Flights From Philadelphia to Denver

    United Airlines is also a popular choice for this route. United Airlines flight deals for Philadelphia to Denver start from as low as $190 round-trip, depending on your selected dates, with average United Airlines deals seen on momondo around $410. United Airlines operates 20 flights to Denver from Philadelphia in an average week. Users have rated it 7.4/10 across 8,861 reviews.


Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Estes Park
Breckenridge
Black Hawk
Aurora
Fort Collins
Keystone
Cripple Creek
Longmont
Boulder
Lakewood
Manitou Springs
Greeley
Westminster
Thornton
Winter Park
Silverthorne
Copper Mountain
Grand Lake
Golden
Frisco

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Philadelphia to Denver. Millions of users trust and use momondo every year so you are in good hands.

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

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

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

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 Denver from Philadelphia.

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

Yes momondo offers price alerts on flights to Denver from Philadelphia. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.


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1 adult
Mon 7/7
Mon 7/14

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