Cheap flights from Denver to Philadelphia from $155
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 12/6. 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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Southwest flights from Denver to Philadelphia
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Fly from
Fly to
Route
Depart
Return
DenverPhiladelphia
DEN Denver Intl - PHL Philadelphia
DENPHL
Denver Intl
Tue 11/17
6:31 pm-7:21 am
1 stop10h 50m
Philadelphia
Fri 11/20
8:38 pm-11:04 pm
Nonstop4h 26m
DenverPhiladelphia
DEN Denver Intl - PHL Philadelphia
DENPHL
Denver Intl
Thu 12/3
9:00 am-9:07 pm
1 stop10h 07m
Philadelphia
Fri 12/11
6:40 pm-12:35 pm
2 stops19h 55m
DenverPhiladelphia
DEN Denver Intl - PHL Philadelphia
DENPHL
Denver Intl
Fri 12/11
9:50 am-5:57 pm
1 stop6h 07m
Philadelphia
Mon 12/14
9:55 am-12:15 pm
Nonstop4h 20m
DenverPhiladelphia
DEN Denver Intl - PHL Philadelphia
DENPHL
Denver Intl
Fri 12/11
9:50 am-5:57 pm
1 stop6h 07m
Philadelphia
Mon 12/14
7:41 am-10:01 am
Nonstop4h 20m
DenverPhiladelphia
DEN Denver Intl - PHL Philadelphia
DENPHL
Denver Intl
Thu 10/29
8:26 am-2:47 pm
1 stop28h 21m
Philadelphia
Mon 11/2
12:10 pm-8:30 am
1 stop22h 20m
DenverPhiladelphia
DEN Denver Intl - PHL Philadelphia
DENPHL
Denver Intl
Fri 11/6
6:45 pm-12:10 am
Nonstop3h 25m
Philadelphia
Mon 11/9
7:25 pm-11:15 pm
1 stop5h 50m
DenverPhiladelphia
DEN Denver Intl - PHL Philadelphia
DENPHL
Denver Intl
Fri 12/11
6:45 pm-12:05 am
Nonstop3h 20m
Philadelphia
Mon 12/14
6:20 pm-10:35 pm
1 stop6h 15m
DenverPhiladelphia
DEN Denver Intl - PHL Philadelphia
DENPHL
Denver Intl
Wed 12/16
3:04 pm-8:34 pm
Nonstop3h 30m
Philadelphia
Wed 1/6
8:53 am-11:24 am
Nonstop4h 31m
DenverPhiladelphia
DEN Denver Intl - PHL Philadelphia
DENPHL
Denver Intl
Wed 12/16
3:04 pm-8:34 pm
Nonstop3h 30m
Philadelphia
Thu 1/7
8:53 am-11:24 am
Nonstop4h 31m
DenverPhiladelphia
DEN Denver Intl - PHL Philadelphia
DENPHL
Denver Intl
Sat 11/14
10:41 am-11:06 pm
1 stop10h 25m
Philadelphia
Sun 11/15
10:00 am-5:49 pm
1 stop9h 49m
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 typical price of a round-trip flight between Denver and Philadelphia?
Prices are currently low for flights on this route.
Typical prices usually range from $281 to $492.The lowest price recently found on this route was $279.
What is the cheapest month to fly to Philadelphia?
The cheapest month to fly to Philadelphia from Denver is in February. Flight prices, which tend to average around $271, are often lower during this time because this is during the off-season. The month of April is another great option to travel to Philadelphia, with average flight prices from Denver averaging around $322.
What is the cheapest day to depart on your flight to Philadelphia?
The cheapest day to depart from Denver to Philadelphia is on a Thursday. Travelers who choose to depart for Philadelphia on a Thursday will often find tickets for as low as $399. 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 $552.
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 Denver to Philadelphia in the evening for as low as $315. 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 in the afternoon when prices are around $498.
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 from Denver 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 $375 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 $336 on momondo.
What cabin class options are available on Denver to Philadelphia flights?
There are 4 cabin classes available to choose from on Denver 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 October 2026, prices for Denver to Philadelphia flights are approximately 7% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Denver Intl to Philadelphia?
Frontier and Delta are the most popular carriers operating from Denver Intl to Philadelphia
What airlines fly to Philadelphia?
United Airlines, Frontier and Delta are the top three most popular airlines that fly to Philadelphia from Denver according to our data. United Airlines is the first choice among our users, with 48% 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 Denver to Philadelphia on average per day?
The number of flights available between Denver and Philadelphia is 14 per day as of October 2026. The most frequent departure time is 1:00PM, with 55% of daily flights leaving in the afternoon.
How many flights depart from Denver to Philadelphia on average per week?
As of October 2026, there are 103 flights per week flying from Denver to Philadelphia. The most common day of the week flights depart is Mon, with 17% of flights taking off on this day.
When to book flights from Denver to Philadelphia
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
Frequently asked questions about flying from Denver to Philadelphia
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 20m 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?
There are 6 operators available for flights from Denver Intl Airport to Philadelphia Airport as of October 2026.
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?
momondo data reveals that the most frequently booked plane model on the route from Denver to Philadelphia is Boeing 737-800, representing 28.41% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 22.53%, Boeing 737-800 Passenger/BBJ2 (winglets) at 11.28%, and Boeing 737 at 8.80%.
What is the most popular airline from Denver to Philadelphia?
momondo data reveals that the most frequently booked airline on the route from Denver to Philadelphia is Frontier, representing 36% of all bookings. The subsequent popular airlines are American Airlines at 33%, United Airlines at 19%, and Southwest at 11%.
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 | ||
|---|---|---|---|---|---|
| PriceFrom $124 | Free Cancellation | Rating 5.6 2,551 reviews | |||
| PriceFrom $164 | Free Cancellation | Rating 7.1 3,046 reviews | |||
| PriceFrom $236 | Free Cancellation | Rating 7.8 8,635 reviews | |||
| PriceFrom $237 | Free Cancellation | Rating 7.0 12,136 reviews | |||
| PriceFrom $245 | Free Cancellation | Rating 7.4 10,315 reviews | |||
| PriceFrom $248 | Free Cancellation | Rating 7.9 4,220 reviews |
Southwest Flights From Denver to Philadelphia
Southwest flight deals from Denver to Philadelphia start from $248 round-trip. Over the 13 Southwest flights for this route in a normal week, average airfare is usually $489 round-trip - but some users have found much cheaper deals with momondo.
United Airlines Flights From Denver to Philadelphia
$245 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 $534, however, with flight time and availability significantly affecting the price. United Airlines (7.4/10 from 10,315 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 locationsWhy 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.