DEN - PHL

$141 Find Cheap Flights from Denver to Philadelphia - Compare and Save

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Everything you should know

Cheapest round-trip
$219
Typical prices: $269-$481
Frontier
Sat 10/6Thu 10/11
DEN - PHL • 1 stop
Cheapest non-stop
$221
Typical prices: $281-$493
Frontier
Tue 10/9Thu 10/11
DEN - PHL • Non-stop
Nonstop flights
You can fly direct with United Airlines, American Airlines and others. Average duration is 3h 36m.
Direct flights
+1
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 6 weeks in advance save around 26% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 22% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $301 (round-trip)
Shortest trip • 5h 44m (one-way)
Insights
Insights
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We hope you love your trip to Philadelphia!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Denver to Philadelphia (DEN-PHL)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to Philadelphia

Tue, Oct 6 - Sun, Oct 11
Frontier Logo
7:10 pm - 7:16 amDEN  Denver Intl-PHL Philadelphia
10h 06m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
6:00 am - 8:06 amPHL  Philadelphia-DEN Denver Intl
52h 06m2 stops Tampa Atlanta Hartsfield-Jackson
$219Frontier
Thu, Nov 5 - Mon, Nov 9
Frontier Logo
6:57 pm - 7:21 amDEN  Denver Intl-PHL Philadelphia
10h 24m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
5:22 pm - 8:22 amPHL  Philadelphia-DEN Denver Intl
17h 00m1 stop Atlanta Hartsfield-Jackson
$219Frontier
Tue, Sep 29 - Mon, Oct 5
Multiple Airlines Logo
7:10 pm - 7:16 amDEN  Denver Intl-PHL Philadelphia
10h 06m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
5:59 pm - 9:03 pmPHL  Philadelphia-DEN Denver Intl
29h 04m2 stops Tampa St. Petersburg Atlanta Hartsfield-Jackson
$222Multiple Airlines
Thu, Nov 5 - Fri, Nov 6
Multiple Airlines Logo
6:57 pm - 7:21 amDEN  Denver Intl-PHL Philadelphia
10h 24m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
7:26 pm - 9:32 pmPHL  Philadelphia-DEN Denver Intl
28h 06m2 stops Tampa St. Petersburg Atlanta Hartsfield-Jackson
$266Multiple Airlines
Thu, Oct 8 - Mon, Oct 12
American Airlines Logo
11:59 pm - 5:35 amDEN  Denver Intl-PHL Philadelphia
3h 36mnonstop
American Airlines Logo
8:05 pm - 10:36 pmPHL  Philadelphia-DEN Denver Intl
4h 31mnonstop
$321American Airlines
Tue, Nov 3 - Sat, Nov 7
American Airlines Logo
2:57 pm - 8:29 pmDEN  Denver Intl-PHL Philadelphia
3h 32mnonstop
American Airlines Logo
8:55 am - 11:21 amPHL  Philadelphia-DEN Denver Intl
4h 26mnonstop
$321American Airlines
Tue, Nov 3 - Sat, Nov 14
United Airlines Logo
6:08 pm - 11:39 pmDEN  Denver Intl-PHL Philadelphia
3h 31mnonstop
United Airlines Logo
7:45 am - 10:05 amPHL  Philadelphia-DEN Denver Intl
4h 20mnonstop
$321United Airlines
Tue, Oct 6 - Sat, Oct 10
United Airlines Logo
1:53 pm - 7:33 pmDEN  Denver Intl-PHL Philadelphia
3h 40mnonstop
United Airlines Logo
3:52 pm - 5:59 pmPHL  Philadelphia-DEN Denver Intl
4h 07mnonstop
$321United Airlines
Tue, Nov 3 - Wed, Nov 11
Southwest Logo
10:50 am - 4:15 pmDEN  Denver Intl-PHL Philadelphia
3h 25mnonstop
Southwest Logo
5:15 pm - 7:25 pmPHL  Philadelphia-DEN Denver Intl
4h 10mnonstop
$321Southwest
Thu, Oct 1 - Mon, Oct 5
Southwest Logo
7:30 pm - 1:00 amDEN  Denver Intl-PHL Philadelphia
3h 30mnonstop
Southwest Logo
8:15 pm - 12:25 amPHL  Philadelphia-DEN Denver Intl
6h 10m1 stop Nashville Intl
$331Southwest
Booking Insights

Price, demand and travel trends for Denver to Philadelphia flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Denver to Philadelphia with more confidence.

How much is a round-trip flight from Denver to Philadelphia?

Round-trip flights from Denver to Philadelphia start at $219. Prices are below average for this route right now, with typical round-trip fares ranging from $269 to $481. The lowest price found in the past 5 days was $219 on Frontier.

What's the cheapest day of the week to fly from Denver to Philadelphia?

Tuesday is the cheapest day of the week to fly from Denver to Philadelphia, it is 8% cheaper than the average day. Monday is the most expensive day with flight prices 22% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • February is the cheapest month to fly from Denver to Philadelphia at $291 round-trip.
  • June ($464) and May ($393) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 59% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Denver to Philadelphia the cheapest?

Flights from Denver to Philadelphia are cheapest 6 weeks before departure. Booking in this window typically costs about 26% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from Denver to Philadelphia

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Frontier and United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Harriet Baskas

Harriet Baskas

Expert on American Airlines, PHL and DEN

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Blane Bachelor

Blane Bachelor

Expert on Southwest

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Key details for Denver to Philadelphia flights

Low season

February

Cheapest flight

$141
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 25% increase in price.
Flight from Denver to Philadelphia

When to book flights from Denver to Philadelphia

Are your dates flexible? Find out the best times to travel from Denver to Philadelphia based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Denver to Philadelphia flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Where can I sleep at Philadelphia International Airport?

    The Philadelphia Airport Marriott is an airport hotel at PHL. To get to this establishment, you can take the free shuttle that departs every 20min from the terminals or the Skybride from Terminal B. The other option is Minute Suites, ideal if you only need a place to sleep. This establishment is located at the Terminal A-B Link, Airside. They offer day rooms and workstation cubicles where you can nap, work, or relax. Each suite features a daybed sofa, HD TV, Wi-Fi, power outlet, sound masking system, desk, and phone.

  • Does Philadelphia International Airport offer accessible services?

    Elevators and ramps are provided for barrier-free access to passengers in wheelchairs. There are also reserved parking spots, accessible restrooms, and accessible water fountains for passengers with limited mobility. The airport also works with Aira to provide safe passage for passengers with low vision. These passengers also get tactile guide paths and braille signage around the airport. TTY and courtesy telephones are also available for the hearing impaired to request assistance.

  • What are transport options from Philadelphia International Airport?

    You can easily connect to downtown Philadelphia using the SEPTA (Southeastern Pennsylvania Transportation Authority) trains. You can use this connection to get downtown and Amtrack connections, and you’ll find the PHL train platforms at Terminals A-East, B, C, D, and E baggage claim. PHL is also served by the SEPTA bus route, with buses headed from the airport to South Philadelphia and Chester, 69th Street Transportation Center, and Suburban Square in Ardmore. Taxis are also an option at the rank outside the terminals, and car rental companies have their desks in the ground transportation area.

  • What family services are offered at Philadelphia International Airport?

    Passengers traveling with children will have access to the Mamava Suites, which have fold-down desks, power outlets, comfortable seating, and are lockable from inside. For nursing mothers using the sleep pods, they will get 30min free. The airport has also provided several companion care and family restrooms around the airport. The airport also has a kids’ play area at Terminal A-East for those traveling with the older kids. The “Ready For Take-Off” children’s play area features climbing structures, toys, and everything your kid needs to have fun.

  • Which airlines offer extra legroom and free seat selection on Denver to Philadelphia flights?

    Among airlines operating Denver to Philadelphia flights:

    • American Airlines: offers extra legroom; offers free seat selection
    • Frontier: offers free seat selection
    • United Airlines: offers extra legroom; offers free seat selection
    • Southwest: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • What airlines are available from Denver to Philadelphia?

    4 airlines operate flights between Denver and Philadelphia. The airlines offering nonstop flights on this route include:

    • United Airlines
    • American Airlines
    • Southwest
    • Frontier

  • Which airports can I use when flying from Denver to Philadelphia?

    Flights from Denver to Philadelphia usually depart from Denver Intl (DEN) and arrive at Philadelphia (PHL).

  • Which airlines include bags at no extra cost on Denver to Philadelphia flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • American Airlines: a cabin bag and a checked bag in Economy Class
    • Frontier: a cabin bag and a checked bag in Economy Class
    • United Airlines: a cabin bag and a checked bag in Economy Class

    Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

  • What cabin classes can I book on flights from Denver to Philadelphia?

    Four cabin classes are available on flights from Denver to Philadelphia:

    • Economy Class
    • Premium Economy Class
    • Business Class
    • First Class

    Prices vary by airline.

  • How much can I save by taking a layover when flying from Denver to Philadelphia?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $301 round-trip via Orlando (MCO), compared to $383 for nonstop.

  • What is the standard checked-bag allowance on flights from Denver to Philadelphia?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Denver to Philadelphia?

    The Boeing 737-800 family is used most often on this route, operated mainly by United Airlines and American Airlines. Other aircraft seen on the route include Boeing 737 MAX 8 variants.

  • Which airports do connecting flights from Denver to Philadelphia pass through?

    One-stop flights from Denver to Philadelphia most commonly connect through:

    • Atlanta Hartsfield-Jackson (ATL) - 35% of one-stop connections
    • Orlando (MCO) - 17% of one-stop connections
    • Boston Logan Intl (BOS) - 8% of one-stop connections
    • Minneapolis St Paul (MSP) - 8% of one-stop connections

    Atlanta Hartsfield-Jackson (ATL) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Denver to Philadelphia?

    Yes. Being flexible with your travel dates can save you up to 25% on the Denver to Philadelphia route. Tuesday is the cheapest departure day at $344 round-trip on average, while Monday is the most expensive at $455, a difference of $111. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How are flight departures from Denver to Philadelphia spread across the day?

    Morning is the busiest departure period on Denver to Philadelphia flights, with 38% of flights leaving in that window. Afternoon departures account for 37%, evening flights for 25%, and night flights for 0%.

  • What popular places can I visit in Philadelphia?

    Some of the most popular sights in Philadelphia are Philadelphia Convention Center, Rittenhouse Square and Philadelphia Stadium. These are among the most viewed places in Philadelphia on KAYAK.

  • What are the earliest and latest flights from Denver to Philadelphia?

    These are the earliest and latest flight times available from Denver to Philadelphia:

    • Earliest: departs at 6:30 am and lands at 10:06 am
    • Latest: departs at 11:59 pm and lands at 3:35 am.

    The flight takes about 3h 36m.

  • How expensive are last-minute Denver to Philadelphia flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 16% above the route average of $371. Book 6 weeks before departure for the lowest fares.

  • How long is a flight from Denver to Philadelphia?

    A nonstop flight from Denver to Philadelphia takes 3h 36m, covering 1,553 miles.

  • Do I need a passport to fly from Denver to Philadelphia?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • Have flight prices from Denver to Philadelphia changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $219 to $1,512. That means the highest observed fare was about 7x higher than the lowest one.

  • How are flight prices from Denver to Philadelphia looking right now?

    One-way fares from Denver to Philadelphia are currently lower than usual. Average one-way flight prices are about $159, which is 30% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Denver to Philadelphia?

    Flying via Chicago Midway (MDW) gives the shortest average 1-stop total travel time at 5h 44m, compared with 6h 33m via Lambert-St Louis (STL) and 8h 05m via Boston Logan Intl (BOS).

  • What is the time difference between Denver and Philadelphia?

    Philadelphia is 2 hours ahead of Denver (Eastern Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Philadelphia Airport (PHL)?

    Philadelphia Airport (PHL) hosts 5 major car rental companies, with daily rates starting from around $28 for economy cars. Top options include:
    • Payless
    • Dollar
    • Hertz
    • Thrifty
    • Budget

  • How much should I expect to pay for a Denver to Philadelphia flight?

    Round-trip flights from Denver to Philadelphia range from $269 to $481, with an average of $371 over the past 12 months. Anything below $269 counts as a good deal.

  • Which airlines offer Wi-Fi on Denver to Philadelphia flights?

    Two airlines offer in-flight Wi-Fi on Denver to Philadelphia flights:

    • • American Airlines
    • • JetBlue

    Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty program; others are paid add-ons priced by flight length.

Your guide to booking Denver to Philadelphia flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Tuesday departure instead of Monday. On this route, Tuesday flights average $344 - about $111 less than Monday (24% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 6 weeks before you fly. On this route, that window historically saves about 26% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Denver to Philadelphia trip for February. Fares historically average $291 round-trip in that month - typically $173 less than the most expensive month, which is June (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Orlando Airport (MCO) can be cheaper than flying direct. The cheapest layover option averages $301 round-trip on this route - about $82 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Philadelphia Airport.
    - Embassy Suites by Hilton Philadelphia Airport
    - DoubleTree by Hilton Philadelphia Airport
    - Microtel Inn & Suites by Wyndham Philadelphia Airport
  • Denver International Airport (DEN) is a large airport with one main terminal (Jeppesen Terminal) and three concourses. The airport is big, and for easy movement within the airport complex, DEN has a free shuttle service and an underground train that connects the main terminal to the three concourses.
  • Pets are welcome to travel through DEN. The airport has provided pet relief areas at Gates A, B, and C and an outdoor area outside Door 200, Jeppesen Terminal.
  • Around 850 kg of carbon is emitted per passenger on flights from Denver to Philadelphia. However, flying with American Airlines, Frontier Airlines, and United Airlines significantly reduces this, as these airlines emit 59%, 56%, and 47% less carbon per passenger, respectively.
  • Fly with American Airlines, United Airlines, or Delta for a chance to relax at their premium lounges at DEN before your flight. These airlines operate premium lounges at DEN, requiring your flight ticket and a pre-purchased pass for admittance.
  • If you have some time after your flight to Philadelphia International Airport (PHL), check out the art exhibits around the airport or view planes landing and taking off from the observation decks in each terminal. XpresSpa at PHL also offers manicures, pedicures, massages, and facials, and you’ll find them at Terminals C, D, and F.

Prefer to fly direct from Denver to Philadelphia?

 
Find which airlines fly direct from Denver Intl Airport to Philadelphia Airport, which days they fly and book direct flights.

Direct departures

Denver Intl to Philadelphia

Monday

American Airlines,Frontier,Southwest, +1 more

American Airlines,Frontier, +2 more

Tuesday

American Airlines,Frontier,Southwest, +1 more

American Airlines,Frontier, +2 more

Wednesday

American Airlines,Frontier,Southwest, +1 more

American Airlines,Frontier, +2 more

Thursday

American Airlines,Frontier,Southwest, +1 more

American Airlines,Frontier, +2 more

Friday

American Airlines,Frontier,Southwest, +1 more

American Airlines,Frontier, +2 more

Saturday

American Airlines,Frontier,Southwest, +1 more

American Airlines,Frontier, +2 more

Sunday

American Airlines,Frontier,Southwest, +1 more

American Airlines,Frontier, +2 more

See more direct flights

Direct returns

Philadelphia to Denver Intl

Monday

American Airlines,Frontier,Southwest, +1 more

American Airlines,Frontier, +2 more

Tuesday

American Airlines,Frontier,Southwest, +1 more

American Airlines,Frontier, +2 more

Wednesday

American Airlines,Frontier,Southwest, +1 more

American Airlines,Frontier, +2 more

Thursday

American Airlines,Frontier,Southwest, +1 more

American Airlines,Frontier, +2 more

Friday

American Airlines,Frontier,Southwest, +1 more

American Airlines,Frontier, +2 more

Saturday

American Airlines,Frontier,Southwest, +1 more

American Airlines,Frontier, +2 more

Sunday

American Airlines,Frontier,Southwest, +1 more

American Airlines,Frontier, +2 more

See more direct flights

More options for your flight from Denver to Philadelphia

Complete your trip to Philadelphia with a hotel stay or car rental