$141+ Cheap flights from Denver to Philadelphia (DEN - PHL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — PHL
Oct 10 — Oct 171
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Denver to Philadelphia with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Denver Intl to Philadelphia are usually found in February or April, booked 41 days in advance, depart on a Thursday or Friday and return on a Saturday
Cheap flight deals from Denver to Philadelphia
Cheapest
Best
Last-minute
One-way
Cheapest flights from Denver to PhiladelphiaExplore the most affordable flight options available from Denver to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
Explore the most affordable flight options available from Denver to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:10 pm -
1 stop10h 06m
Sun 10/116:00 am -
2 stops52h 06m
Deal found 9/7![Frontier logo]()
$219
This Cheapflightsfares deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:57 pm -
1 stop10h 24m
Mon 10/195:50 am -
Nonstop4h 10m
Deal found 9/5![Frontier logo]()
$220
This Cheapflightsfares deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:37 pm -
Nonstop3h 39m
Sun 10/115:50 am -
Nonstop4h 10m
Deal found 9/5![Frontier logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:10 pm -
1 stop10h 06m
Mon 10/55:59 pm -
2 stops29h 04m
Deal found 9/7![Multiple Airlines logo]()
$222
This Frontier deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/117:37 pm -
Nonstop3h 39m
Fri 10/165:50 am -
Nonstop4h 10m
Deal found 9/6![Frontier logo]()
$223
This Frontier deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/103:00 pm -
1 stop14h 18m
Wed 10/145:50 am -
Nonstop4h 10m
Deal found 9/6![Frontier logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:37 pm -
Nonstop3h 39m
Thu 10/155:50 am -
Nonstop4h 10m
Deal found 9/8![Frontier logo]()
$225
This Cheapflightsfares deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:37 pm -
Nonstop3h 39m
Sun 10/255:50 am -
Nonstop4h 10m
Deal found 9/6![Frontier logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:19 pm -
2 stops18h 56m
Tue 10/205:22 pm -
1 stop16h 44m
Deal found 9/6![Frontier logo]()
$227
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/239:10 pm -
2 stops19h 05m
Tue 10/2712:36 pm -
1 stop10h 56m
Deal found 9/5![Frontier logo]()
$228
This Frontier deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:37 pm -
Nonstop3h 39m
Wed 10/145:50 am -
Nonstop4h 10m
Deal found 9/6![Frontier logo]()
$229
This Cheapflightsfares deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:57 pm -
1 stop10h 24m
Wed 10/215:50 am -
Nonstop4h 10m
Deal found 9/5![Frontier logo]()
$230
Best flights from Denver to PhiladelphiaDiscover carefully curated flight deals from Denver to Philadelphia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
Discover carefully curated flight deals from Denver to Philadelphia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
This Southwest deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:35 pm -
Nonstop3h 35m
Sun 11/16:00 am -
1 stop5h 50m
Deal found 9/8![Southwest logo]()
$407
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2710:10 am -
Nonstop3h 36m
Sat 10/313:25 pm -
Nonstop4h 20m
Deal found 9/7![United Airlines logo]()
$421
This Alaska Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/219:45 am -
2 stops17h 56m
Mon 10/264:17 pm -
2 stops27h 44m
Deal found 9/5![Alaska Airlines logo]()
$493
This Southwest deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1311:15 am -
2 stops8h 20m
Tue 10/206:00 am -
2 stops9h 20m
Deal found 9/6![Southwest logo]()
$416
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/92:00 pm -
Nonstop3h 31m
Fri 11/133:35 pm -
Nonstop4h 20m
Deal found 9/7![United Airlines logo]()
$447
This Southwest deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/16:30 am -
2 stops8h 00m
Wed 1/135:20 am -
Nonstop4h 15m
Deal found 9/6![Southwest logo]()
$420
This Alaska Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2412:31 pm -
2 stops15h 10m
Wed 10/287:02 am -
2 stops17h 10m
Deal found 9/5![Alaska Airlines logo]()
$493
This United Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/15:50 am -
1 stop6h 49m
Fri 1/17:37 pm -
1 stop6h 38m
Deal found 9/6![United Airlines logo]()
$467
This Southwest deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1011:00 am -
2 stops8h 00m
Tue 10/136:00 am -
2 stops7h 25m
Deal found 9/9![Southwest logo]()
$441
This Southwest deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/247:00 am -
2 stops8h 20m
Tue 11/248:45 pm -
1 stop6h 00m
Deal found 9/8![Southwest logo]()
$448
This Southwest deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1011:00 am -
2 stops8h 00m
Sat 10/175:55 am -
2 stops8h 10m
Deal found 9/9![Southwest logo]()
$473
This Southwest deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/91:30 pm -
2 stops8h 25m
Fri 11/1311:40 am -
2 stops9h 20m
Deal found 9/6![Southwest logo]()
$477
Last-minute flights from Denver to PhiladelphiaDiscover last-minute flight deals from Denver to Philadelphia. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Denver to Philadelphia. Data last updated September 10, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:10 pm -
1 stop10h 06m
Mon 10/55:59 pm -
2 stops29h 04m
Deal found 9/7![Multiple Airlines logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:10 pm -
1 stop10h 06m
Sun 10/116:00 am -
2 stops52h 06m
Deal found 9/7![Frontier logo]()
$219
This Cheapflightsfares deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:37 pm -
Nonstop3h 39m
Sun 10/115:50 am -
Nonstop4h 10m
Deal found 9/5![Frontier logo]()
$221
This Frontier deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:37 pm -
Nonstop3h 39m
Wed 10/145:50 am -
Nonstop4h 10m
Deal found 9/6![Frontier logo]()
$229
This Frontier deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/103:00 pm -
1 stop14h 18m
Wed 10/145:50 am -
Nonstop4h 10m
Deal found 9/6![Frontier logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:37 pm -
Nonstop3h 39m
Thu 10/155:50 am -
Nonstop4h 10m
Deal found 9/8![Frontier logo]()
$225
This Frontier deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/117:37 pm -
Nonstop3h 39m
Fri 10/165:50 am -
Nonstop4h 10m
Deal found 9/6![Frontier logo]()
$223
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:19 pm -
2 stops18h 56m
Tue 10/205:22 pm -
1 stop16h 44m
Deal found 9/6![Frontier logo]()
$227
This Cheapflightsfares deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:57 pm -
1 stop10h 24m
Wed 10/215:50 am -
Nonstop4h 10m
Deal found 9/5![Frontier logo]()
$230
This Cheapflightsfares deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:57 pm -
1 stop10h 24m
Mon 10/195:50 am -
Nonstop4h 10m
Deal found 9/5![Frontier logo]()
$220
This Cheapflightsfares deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:37 pm -
Nonstop3h 39m
Sun 10/255:50 am -
Nonstop4h 10m
Deal found 9/6![Frontier logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/239:10 pm -
2 stops19h 05m
Tue 10/2712:36 pm -
1 stop10h 56m
Deal found 9/5![Frontier logo]()
$228
One-way flights from Denver to PhiladelphiaSearch for one-way flight options from Denver to Philadelphia. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
Search for one-way flight options from Denver to Philadelphia. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:57 pm -
1 stop10h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/59:10 pm -
2 stops25h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/99:10 pm -
2 stops32h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$143
This Trip.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/27:10 pm -
1 stop26h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$145
This Super.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1710:38 am -
1 stop10h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Frontier logo]()
$146
This Super.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:09 pm -
1 stop19h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$147
This Frontier deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:57 pm -
1 stop10h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$148
This Super.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2411:59 pm -
Nonstop3h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/89:10 pm -
2 stops32h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Frontier logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:57 pm -
1 stop21h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:30 am -
2 stops14h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:19 pm -
2 stops23h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$154
Find flight deals from Denver to Philadelphia
Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Philadelphia (PHL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $219 (Kiwi.com) |
One-way from | $141 (Cheapflightsfares) |
Popular in | June |
Cheapest in | February |
Average price | $376 |
Good round-trip deal | $344 or less |
Good one-way deal | $190 or less |
Cheapflights 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, Cheapflights users made 7,457,451 searches. Data last updated September 10, 2026.
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
Cheapest round-trip
DenverPhiladelphia
DEN Denver Intl - PHL Philadelphia
DENPHL
Denver Intl
Mon 11/16
6:00 pm-11:25 pm
Nonstop3h 25m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$161
DenverPhiladelphia
DEN Denver Intl - PHL Philadelphia
DENPHL
Denver Intl
Thu 12/31
7:05 am-2:57 pm
1 stop5h 52m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$171
DenverPhiladelphia
DEN Denver Intl - PHL Philadelphia
DENPHL
Denver Intl
Wed 10/7
12:59 am-9:00 am
1 stop6h 01m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$171
Quickest round-trip
DenverPhiladelphia
DEN Denver Intl - PHL Philadelphia
DENPHL
Denver Intl
Sat 11/21
7:30 pm-12:50 am
Nonstop3h 20m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$182
DenverPhiladelphia
DEN Denver Intl - PHL Philadelphia
DENPHL
Denver Intl
Fri 1/1
7:05 am-2:57 pm
1 stop5h 52m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$182
DenverPhiladelphia
DEN Denver Intl - PHL Philadelphia
DENPHL
Denver Intl
Wed 12/30
3:51 pm-11:44 pm
1 stop5h 53m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$202
DenverPhiladelphia
DEN Denver Intl - PHL Philadelphia
DENPHL
Denver Intl
Tue 3/2
3:10 pm-10:56 pm
1 stop5h 46m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$202
DenverPhiladelphia
DEN Denver Intl - PHL Philadelphia
DENPHL
Denver Intl
Fri 12/18
11:59 pm-5:31 am
Nonstop3h 32m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$226
DenverPhiladelphia
DEN Denver Intl - PHL Philadelphia
DENPHL
Denver Intl
Sat 9/19
11:25 am-5:05 pm
Nonstop3h 40m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$240
DenverPhiladelphia
DEN Denver Intl - PHL Philadelphia
DENPHL
Denver Intl
Tue 3/2
5:25 pm-10:46 pm
Nonstop3h 21m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$242
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Denver to Philadelphia
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Philadelphia in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Denver-Philadelphia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Philadelphia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Philadelphia flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Denver-Philadelphia flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Philadelphia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Denver to Philadelphia
Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Denver with our price prediction graph.
DEN-PHL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Denver to Philadelphia
Prices
Airlines
How far ahead should I book a flight from Denver to Philadelphia?
To ensure you get the cheapest price possible for a flight from Denver to Philadelphia, you should look to book at least 40 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Denver to Philadelphia?
Currently, February is the cheapest month in which you can book a flight from Denver to Philadelphia (average of $271). Flying from Denver to Philadelphia in June is currently the most expensive (average of $467). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from DEN to PHL?
Find hourly flight availability from Denver to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 10, 2026.
It’s typically best to fly out from Denver to Philadelphia in the evening. Doing so could potentially save you 36% on the flight price compared to flying in the afternoon, which is usually more expensive.
What is the cheapest day to fly from Denver to Philadelphia?
Use this chart to determine the cheapest time to fly round-trip from Denver to Philadelphia. Price data was last updated on September 5, 2026.
Travelers seeking maximum savings on their Denver to Philadelphia flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
The best insider tips for Denver to Philadelphia flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Denver to Philadelphia trip
Our travel experts
Reviews of airlines servicing Philadelphia
Get insights into the airlines that provide service to Philadelphia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Philadelphia. Reviews last updated September 10, 2026.
Get a feel of what it's like to fly with Southwest,United Airlines, andAmerican Airlines from Denver to Philadelphia by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Related info for your journey
Find useful and relevant information for your journey from Denver to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Philadelphia?
Book flights to Philadelphia if you plan to visit one of these locationsWildwood
Reading
King of Prussia
Camden
Wildwood Crest
Cherry Hill
Ocean City
Lewes
Plymouth Meeting
Wyomissing
Pottstown
Ephrata
Milford
Dover
Elkton
Essington
Willow Grove
New Castle
Vineland
Millville
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Denver
Philadelphia flight routes
Popular flights
Alternative routes for Denver to Philadelphia
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Philadelphia by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Denver to Philadelphia by cabin class
Find flights from Denver to Philadelphia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Denver and Philadelphia flights
Browse other Denver and Philadelphia flight options. Last updated on September 10, 2026.
Other flights from Denver
Browse through other flights departing from Denver. Flights are based on user searches made on Cheapflights and were last updated on September 10, 2026.
Other flights to Philadelphia
Explore flights to Philadelphia departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 10, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 6 airlines flying from Denver to Philadelphia
Discover the top 6 airlines that operate flights from Denver to Philadelphia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$121 | Average$293 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$122 | Average$303 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$128 | Average$343 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$216 | Average$515 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$231 | Average$411 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$241 | Average$478 | FlexibilityNo cancel fee | On-time63% |