Cheap flights from Philadelphia to Denver (PHL - DEN)

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The best prices from Philadelphia to Denver Intl are usually found in August or January, booked 13 days in advance, depart on a Tuesday or Saturday and return on a Wednesday

How to find the cheapest flight from
Philadelphia (PHL) to Denver (DEN)

All the information you need to plan the best PHL to DEN flight in 2021: compare Philadelphia to Denver flight prices with the expected peak season, weather and rainfall in Denver.
PHL - DEN
Price
$108 - $247
DEN
Temperature
44.6 - 89.6 °F
DEN
Precipitation
0.5 - 2.7 inches

Popular in

December

High demand for flights, 24% potential price rise

Cheapest in

August

Best time to find cheap flights, 43% potential price drop

Round-trip from

$108

From Philadelphia to Denver Intl

One-way from

$59

One-way flight from Philadelphia to Denver Intl

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Philadelphia to Denver?

Wednesday flights are generally found to be more expensive for flights from Philadelphia to Denver. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Denver.

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

Travelers have found it’s best to book a flight 11 days in advance to save up to 1% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 11 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Philadelphia to Denver 1-2 weeks in advance for as low as $167, or $172 for flights within the next 24 hours.

What is the cheapest month to fly from Philadelphia to Denver?

August is one of the best times of the year to fly to Denver from Philadelphia. Prices for August average $188 per person but you can even find prices for as low as $56. The most expensive prices can be found in the month of December. Opting for a August flight can save you 31% on your journey compared to booking in August

When is the cheapest time to fly from Philadelphia to Denver (PHL - DEN)?

It’s typically best to fly out from Philadelphia to Denver in the evening. Doing so could potentially save you 38% on the flight price compared to flying at noon, which is usually more expensive.

Cheap flights from Philadelphia to Denver in September, October 2021

The best prices found for PHL to DEN flights for September, October
16 Oct - 23 Oct
$62pp
PHL
Philadelphia
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
PHL
Philadelphia
5 Oct - 6 Oct
$67pp
PHL
Philadelphia
Frontier
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
PHL
Philadelphia
27 Sep - 30 Sep
$70pp
PHL
Philadelphia
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
PHL
Philadelphia

Philadelphia to Denver 2021 flight deals

Cheap flights to Denver from Philadelphia found for this year
16 Oct - 23 Oct
$62pp
PHL
Philadelphia
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
PHL
Philadelphia
5 Oct - 6 Oct
$67pp
PHL
Philadelphia
Frontier
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
PHL
Philadelphia
27 Sep - 30 Sep
$70pp
PHL
Philadelphia
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
PHL
Philadelphia

Non-stop flights to Denver from Philadelphia

Save time with Philadelphia to Denver direct flight deals
16 Oct - 23 Oct
$62pp
PHL
Philadelphia
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
PHL
Philadelphia
13 Oct - 16 Oct
$67pp
PHL
Philadelphia
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
PHL
Philadelphia
20 Oct - 23 Oct
$73pp
PHL
Philadelphia
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
PHL
Philadelphia

Last minute flights from Philadelphia to Denver

Late deals on round-trip flights to Denver from Philadelphia, departing today and this week
23 Sep - 30 Sep
$72pp
PHL
Philadelphia
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
PHL
Philadelphia
25 Sep - 27 Sep
$79pp
PHL
Philadelphia
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
PHL
Philadelphia
23 Sep - 27 Sep
$81pp
PHL
Philadelphia
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
PHL
Philadelphia

One-way flights to Denver Intl from Philadelphia

The cheapest one-way flights from Philadelphia to Denver
3:20 am - 5:41 am
American Airlines
Nonstop
4h 21m
PHL - DEN
American Airlines
4:06 pm - 6:25 pm
Frontier
Nonstop
4h 19m
PHL - DEN
Frontier
$62
Kiwi.com
4:05 am - 6:15 am
United Airlines
Nonstop
4h 10m
PHL - DEN
United Airlines
$64
United

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Philadelphia</span> to <span class="emphasized">Denver</span> flights.

Flight FAQs

From Philadelphia to Denver

What airports do I use to fly from Philadelphia to Denver?

Booking a flight from Philadelphia (PHL) to Denver Intl (DEN) is your only option if you wish to fly from Philadelphia to Denver. On a typical day, there are 8 flights from Philadelphia to Denver Intl, all of which are around 3h 58m for a nonstop flight. You can also purchase a plane ticket from 9 airlines when you book a flight from Philadelphia to Denver.

Which airlines flying from Philadelphia to Denver Intl have flexible cancellations due to COVID-19?

Some of our airline partners flying from Philadelphia to Denver Intl have new flexible policies in place due to COVID-19. American Airlines, Frontier, and United Airlines are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like American Airlines with this kind of flexibility.

Are flight prices decreasing from Philadelphia to Denver due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Philadelphia and Denver for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Can I find flights from Philadelphia to Denver for under $100 on Cheapflights?

Yes, there are multiple flights from Philadelphia to Denver for under $100. The cheapest flight booked recently is on Frontier for just $67, but on average you can expect to pay $79.

Are there nonstop flights from Philadelphia to Denver for under $100 on Cheapflights?

Cheapflights has at least 20 direct flights from Philadelphia to Denver under $100. A good price for a nonstop flight from Philadelphia to Denver is less than $94.

Are there last-minute flights available from Philadelphia to Denver for under $100?

There are currently 20+ open flights from Philadelphia to Denver within the next 7 days for less than $100.

How popular is this Philadelphia to Denver flight route?

This flight path from Philadelphia to Denver Intl was viewed by 372 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

What are the cheapest airlines flying from Philadelphia to Denver round-trip?

Frontier, at $67, was found to be the cheapest airline from Philadelphia to Denver. An alternate airline flying to your destination would be Spirit Airlines. Frontier is priced at 64% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from Philadelphia to Denver one-way?

For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $33. Users have also found prices from $41 and $59 on Spirit Airlines and Frontier, respectively.

COVID Restrictions

View COVID Travel Restrictions for Denver, CO

Do I need a COVID test to fly to Denver from Philadelphia?

Information is based on travel restrictions for travel to Denver Intl within the United States

Most visitors from Philadelphia need to provide a negative COVID-19 test result and/or quarantine to enter Denver Intl.

COVID-19 testing requirements
Visitors from Philadelphia must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Denver Intl.

Quarantine requirements
Visitors from Philadelphia are not required to quarantine after entering Denver Intl.

Do I need a test to fly back to Philadelphia from Denver?

Returning to Philadelphia from Denver Intl

COVID-19 testing requirements
Visitors from Denver Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Philadelphia.

Quarantine requirements
Visitors from Denver Intl are not required to quarantine after entering Philadelphia.

Hide COVID Travel Restrictions for Denver, CO

Alternative routes for Philadelphia to Denver

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Denver

Things to know before you go - useful duration and weather info for your trip from Philadelphia to Denver.
Flight duration from PHL to DEN
3h 59m
Average temperature for September in Denver
78.8 °F
Avg rainfall for September in Denver
1.1 ″

Airports servicing Philadelphia

Airports servicing Denver

Top 8 airlines flying from Philadelphia to Denver Intl

The chart below displays the airlines Cheapflights users traveling from Philadelphia to Denver choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Sun Country Air
$71 $145 No cancel fee 83%
Spirit Airlines
$67 $178 No cancel fee 65%
Frontier
$58 $178 No cancel fee 62%
Delta
$112 $221 No cancel fee N/A
American Airlines
$83 $240 No cancel fee 71%
United Airlines
$93 $295 No cancel fee 69%
Southwest
$102 $339 No cancel fee 63%
JetBlue
$153 $516 No cancel fee 62%

Hourly flight availability from Philadelphia to Denver

See what time of day planes typically take off from Philadelphia towards Denver.
Evening 6 PM to midnight 37% of PHL to DEN departures
Afternoon Noon to 6 PM 30% of PHL to DEN departures
Morning 6 AM to noon 25% of PHL to DEN departures
Early morning Midnight to 6 AM 8% of PHL to DEN departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Philadelphia to Denver
See how many times per day planes take to the skies headed from Philadelphia to Denver.
Sunday
6 daily flights
Monday
9 daily flights
Tuesday
9 daily flights
Wednesday
10 daily flights
Thursday
10 daily flights
Friday
9 daily flights
Saturday
6 daily flights
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