$85+ Cheap flights from Philadelphia to Denver (PHL - DEN)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
מאי 17 — מאי 241
Round-trip
1 adult, Economy
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Find cheap flights from Philadelphia to Denver 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 Philadelphia to Denver Intl are usually found in August or July, booked 32 days in advance, depart on a Friday or Thursday and return on a Thursday
Cheap flight deals from Philadelphia to Denver
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Best
Last-minute
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Cheapest flights from Philadelphia to DenverExplore the most affordable flight options available from Philadelphia to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on אפריל 17, 2026.
Explore the most affordable flight options available from Philadelphia to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on אפריל 17, 2026.
This Frontier deal was found by Cheapflights users on 4/15. 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.
ו' 5/18:41 pm
PHL
- DEN
Nonstop4h 28m
Frontier
ו' 5/811:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/15![Frontier logo]()
$118
This Cheapflightsfares deal was found by Cheapflights users on 4/15. 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.
ש' 5/308:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
ה' 6/49:06 pm
DEN
- PHL
1 stop16h 10m
Frontier
Deal found 4/15![Frontier logo]()
$119
This Frontier deal was found by Cheapflights users on 4/16. 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.
ב' 5/43:10 pm
PHL
- DEN
1 stop8h 34m
Frontier
ש' 5/911:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/16![Frontier logo]()
$120
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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.
ה' 5/78:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
א' 5/1011:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/16![Frontier logo]()
$121
This Cheapflightsfares deal was found by Cheapflights users on 4/15. 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.
ד' 5/138:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
א' 5/177:15 am
DEN
- PHL
1 stop15h 51m
Frontier
Deal found 4/15![Frontier logo]()
$123
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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.
ו' 5/298:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
ד' 6/36:00 am
DEN
- PHL
1 stop10h 40m
Frontier
Deal found 4/16![Frontier logo]()
$125
This Expedia deal was found by Cheapflights users on 4/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ד' 5/138:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
ג' 5/1911:56 pm
DEN
- PHL
1 stop7h 03m
Frontier
Deal found 4/16![Frontier logo]()
$126
This Cheapflightsfares deal was found by Cheapflights users on 4/15. 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.
ה' 6/113:49 pm
PHL
- DEN
1 stop7h 19m
Frontier
ג' 6/166:05 am
DEN
- PHL
Nonstop3h 42m
Frontier
Deal found 4/15![Frontier logo]()
$127
This Cheapflightsfares deal was found by Cheapflights users on 4/15. 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.
ד' 6/1012:42 pm
PHL
- DEN
Nonstop4h 14m
Frontier
ג' 6/166:05 am
DEN
- PHL
Nonstop3h 42m
Frontier
Deal found 4/15![Frontier logo]()
$129
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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.
ד' 5/137:20 am
PHL
- DEN
1 stop10h 08m
Frontier
ב' 5/1811:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/16![Frontier logo]()
$130
Best flights from Philadelphia to DenverDiscover carefully curated flight deals from Philadelphia to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated אפריל 17, 2026.
Discover carefully curated flight deals from Philadelphia to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated אפריל 17, 2026.
This Southwest deal was found by Cheapflights users on 4/12. 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.
ה' 6/412:35 pm
PHL
- DEN
Nonstop3h 55m
Southwest
ה' 6/47:05 pm
DEN
- PHL
Nonstop3h 35m
Southwest
Deal found 4/12![Southwest logo]()
$221
This Delta deal was found by Cheapflights users on 4/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ש' 5/96:12 am
PHL
- DEN
1 stop5h 31m
Delta
ש' 5/93:12 pm
DEN
- PHL
1 stop5h 55m
Delta
Deal found 4/16![Delta logo]()
$241
This Southwest deal was found by Cheapflights users on 4/14. 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.
ג' 5/125:50 am
PHL
- DEN
Nonstop4h 05m
Southwest
א' 5/177:45 pm
DEN
- PHL
Nonstop3h 30m
Southwest
Deal found 4/14![Southwest logo]()
$308
This Delta deal was found by Cheapflights users on 4/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
א' 5/36:00 am
PHL
- DEN
1 stop5h 41m
Delta
ש' 5/94:10 pm
DEN
- PHL
1 stop5h 12m
Delta
Deal found 4/16![Delta logo]()
$339
This Delta deal was found by Cheapflights users on 4/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ב' 5/255:45 am
PHL
- DEN
1 stop6h 35m
Delta
ד' 6/34:41 pm
DEN
- PHL
1 stop6h 16m
Delta
Deal found 4/13![Delta logo]()
$363
This Southwest deal was found by Cheapflights users on 4/13. 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.
ד' 5/209:10 am
PHL
- DEN
2 stops9h 10m
Southwest
ג' 5/266:50 am
DEN
- PHL
2 stops8h 00m
Southwest
Deal found 4/13![Southwest logo]()
$374
This Delta deal was found by Cheapflights users on 4/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ב' 5/255:17 am
PHL
- DEN
1 stop8h 01m
Delta
ש' 6/64:41 pm
DEN
- PHL
1 stop6h 16m
Delta
Deal found 4/13![Delta logo]()
$365
This Southwest deal was found by Cheapflights users on 4/13. 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.
ה' 6/185:00 am
PHL
- DEN
Nonstop4h 00m
Southwest
ג' 6/237:25 pm
DEN
- PHL
Nonstop3h 35m
Southwest
Deal found 4/13![Southwest logo]()
$399
This Southwest deal was found by Cheapflights users on 4/12. 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.
ה' 5/142:15 pm
PHL
- DEN
2 stops7h 05m
Southwest
ג' 5/1912:05 pm
DEN
- PHL
2 stops7h 55m
Southwest
Deal found 4/12![Southwest logo]()
$432
This Southwest deal was found by Cheapflights users on 4/14. 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.
ד' 6/1012:55 pm
PHL
- DEN
2 stops7h 45m
Southwest
ש' 6/1312:15 pm
DEN
- PHL
2 stops6h 40m
Southwest
Deal found 4/14![Southwest logo]()
$467
This Southwest deal was found by Cheapflights users on 4/12. 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.
ב' 9/145:25 am
PHL
- DEN
Nonstop3h 50m
Southwest
ו' 9/186:00 pm
DEN
- PHL
Nonstop3h 45m
Southwest
Deal found 4/12![Southwest logo]()
$469
Last-minute flights from Philadelphia to DenverDiscover last-minute flight deals from Philadelphia to Denver. Data last updated אפריל 17, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Denver. Data last updated אפריל 17, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 4/15. 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.
ו' 5/18:41 pm
PHL
- DEN
Nonstop4h 28m
Frontier
ו' 5/811:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/15![Frontier logo]()
$118
This Frontier deal was found by Cheapflights users on 4/16. 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.
ו' 5/18:41 pm
PHL
- DEN
Nonstop4h 28m
Frontier
ג' 5/511:54 pm
DEN
- PHL
1 stop11h 21m
Frontier
Deal found 4/16![Frontier logo]()
$131
This Frontier deal was found by Cheapflights users on 4/16. 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.
ב' 5/43:10 pm
PHL
- DEN
1 stop8h 34m
Frontier
ש' 5/911:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/16![Frontier logo]()
$120
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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.
ד' 5/68:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
ד' 5/1311:56 pm
DEN
- PHL
1 stop6h 58m
Frontier
Deal found 4/16![Frontier logo]()
$127
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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.
ה' 5/78:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
א' 5/1011:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/16![Frontier logo]()
$121
This Cheapflightsfares deal was found by Cheapflights users on 4/15. 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.
ד' 5/138:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
א' 5/177:15 am
DEN
- PHL
1 stop15h 51m
Frontier
Deal found 4/15![Frontier logo]()
$123
This Expedia deal was found by Cheapflights users on 4/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ד' 5/138:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
ג' 5/1911:56 pm
DEN
- PHL
1 stop7h 03m
Frontier
Deal found 4/16![Frontier logo]()
$126
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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.
ד' 5/137:20 am
PHL
- DEN
1 stop10h 08m
Frontier
ב' 5/1811:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/16![Frontier logo]()
$130
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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.
ו' 5/298:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
ד' 6/36:00 am
DEN
- PHL
1 stop10h 40m
Frontier
Deal found 4/16![Frontier logo]()
$125
This Cheapflightsfares deal was found by Cheapflights users on 4/15. 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.
ש' 5/308:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
ה' 6/49:06 pm
DEN
- PHL
1 stop16h 10m
Frontier
Deal found 4/15![Frontier logo]()
$119
One-way flights from Philadelphia to DenverSearch for one-way flight options from Philadelphia to Denver. Find affordable one-way fares based on user searches. Data last updated אפריל 17, 2026.
Search for one-way flight options from Philadelphia to Denver. Find affordable one-way fares based on user searches. Data last updated אפריל 17, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 4/14. 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.
ה' 5/75:13 pm
PHL
- DEN
1 stop8h 31m
Frontier
Deal found 4/14![Frontier logo]()
$85
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
ד' 5/2012:00 pm
PHL
- DEN
1 stop22h 57m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$86
This Super.com deal was found by Cheapflights users on 4/13. 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.
ב' 4/275:30 am
PHL
- DEN
1 stop20h 29m
Frontier
Deal found 4/13![Frontier logo]()
$90
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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.
ה' 4/3010:38 pm
PHL
- DEN
1 stop11h 43m
Frontier
Deal found 4/16![Frontier logo]()
$91
This CheapOair deal was found by Cheapflights users on 4/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ו' 5/222:31 pm
PHL
- DEN
1 stop26h 01m
Frontier
Deal found 4/13![Frontier logo]()
$92
This Super.com deal was found by Cheapflights users on 4/15. 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.
א' 5/108:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Deal found 4/15![Frontier logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
ד' 5/64:47 pm
PHL
- DEN
2 stops25h 44m
Frontier
Deal found 4/17![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
ג' 5/1212:00 pm
PHL
- DEN
2 stops20h 33m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 4/13. 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.
א' 5/310:00 pm
PHL
- DEN
1 stop24h 20m
Frontier
Deal found 4/13![Frontier logo]()
$98
This Kiwi.com deal was found by Cheapflights users on 4/16. 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.
ה' 6/183:49 pm
PHL
- DEN
1 stop7h 19m
Frontier
Deal found 4/16![Frontier logo]()
$99
This American Airlines deal was found by Cheapflights users on 4/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ג' 6/305:30 pm
PHL
- DEN
Nonstop4h 17m
American Airlines
Deal found 4/14![American Airlines logo]()
$100
Find flight deals from Philadelphia to Denver
Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Denver (DEN). 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 אפריל 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $118 (Frontier) |
One-way from | $85 (Cheapflightsfares) |
Popular in | March |
Cheapest in | August |
Average price | $320 |
Good round-trip deal | $296 or less |
Good one-way deal | $149 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Philadelphia to Denver 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 2,558,603 searches. Data last updated אפריל 17, 2026.
Use the filters below to find and compare flights from Philadelphia to Denver that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
ה' 6/4
12:35 pm-2:30 pm
Nonstop3h 55m
Denver Intl
ה' 6/4
7:05 pm-12:40 am
Nonstop3h 35m
$221
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
ש' 5/9
6:12 am-9:43 am
1 stop5h 31m
Denver Intl
ש' 5/9
3:12 pm-11:07 pm
1 stop5h 55m
$241
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
ג' 5/12
5:50 am-7:55 am
Nonstop4h 05m
Denver Intl
א' 5/17
7:45 pm-1:15 am
Nonstop3h 30m
$308
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
א' 5/3
6:00 am-9:41 am
1 stop5h 41m
Denver Intl
ש' 5/9
4:10 pm-11:22 pm
1 stop5h 12m
$339
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
ב' 5/25
5:45 am-10:20 am
1 stop6h 35m
Denver Intl
ד' 6/3
4:41 pm-12:57 am
1 stop6h 16m
$363
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
ב' 5/25
5:17 am-11:18 am
1 stop8h 01m
Denver Intl
ש' 6/6
4:41 pm-12:57 am
1 stop6h 16m
$365
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
ד' 5/20
9:10 am-4:20 pm
2 stops9h 10m
Denver Intl
ג' 5/26
6:50 am-4:50 pm
2 stops8h 00m
$374
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
ה' 6/18
5:00 am-7:00 am
Nonstop4h 00m
Denver Intl
ג' 6/23
7:25 pm-1:00 am
Nonstop3h 35m
$399
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
ה' 5/14
2:15 pm-7:20 pm
2 stops7h 05m
Denver Intl
ג' 5/19
12:05 pm-10:00 pm
2 stops7h 55m
$432
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
ד' 6/10
12:55 pm-6:40 pm
2 stops7h 45m
Denver Intl
ש' 6/13
12:15 pm-8:55 pm
2 stops6h 40m
$467
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Philadelphia to Denver
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 Philadelphia to Denver in April.
| 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*2 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Philadelphia-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Denver flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Philadelphia-Denver 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 Philadelphia-Denver 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 Philadelphia to Denver
Have a flexible travel schedule? Discover the best time to fly to Denver from Philadelphia with our price prediction graph.
PHL-DEN
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 Philadelphia to Denver
Prices
Airlines
Delays
How far ahead should I book a flight from Philadelphia to Denver?
Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to Denver. Price data was last updated on April 10, 2026.
Booking 28 days in advance of your planned departure date is, on average, the best time to get cheap flights from Philadelphia to Denver. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Philadelphia to Denver?
Currently, August is the cheapest month in which you can book a flight from Philadelphia to Denver (average of $278). Flying from Philadelphia to Denver in March is currently the most expensive (average of $428). 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 PHL to DEN?
Find hourly flight availability from Philadelphia to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated אפריל 17, 2026.
It’s typically best to fly out from Philadelphia to Denver at noon. Doing so could potentially save you 34% on the flight price compared to flying in the afternoon, which is usually more expensive.
What is the cheapest day to fly from Philadelphia to Denver?
Use this chart to determine the cheapest time to fly round-trip from Philadelphia to Denver. Price data was last updated on April 11, 2026.
Travelers seeking maximum savings on their Philadelphia to Denver flight should consider departing on Tuesday 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.
How often are flights from Philadelphia to Denver delayed?
About 18% of weekly flights between Philadelphia and Denver have experienced delays in the past year, with the average delay time being 162 minutes.
What is the most punctual flight time for Philadelphia to Denver flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Philadelphia to Denver flights?
Over the last year, United Airlines have had the lowest number of delays on this route, with just 12% of flights being delayed.
The best insider tips for Philadelphia to Denver 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 Philadelphia to Denver trip
Our travel experts
Reviews of airlines servicing Denver
Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated אפריל 17, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited Airlines from Philadelphia to Denver to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Philadelphia to Denver. 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 Denver?
Book flights to Denver if you plan to visit one of these locationsThornton
Black Hawk
Lakewood
Westminster
Broomfield
Golden
Centennial
Greeley
Lone Tree
Wheat Ridge
Silverthorne
Central City
Cripple Creek
Winter Park
Manitou Springs
Frisco
Englewood
Fort Morgan
Glendale
Evergreen
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Other flights to Denver
Explore flights to Denver departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on אפריל 17, 2026.
Search flights from Philadelphia to Denver by cabin class
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Philadelphia and Denver flights
Browse other Philadelphia and Denver flight options. Last updated on אפריל 17, 2026.
Other flights from Philadelphia
Browse through other flights departing from Philadelphia. Flights are based on user searches made on Cheapflights and were last updated on אפריל 17, 2026.
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Check out other popular destinations found by fellow travelers in 2026
Top 7 airlines flying from Philadelphia to Denver
Discover the top 7 airlines that operate flights from Philadelphia to Denver. 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 2,558,603 searches. Data last updated אפריל 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$98 | Average$214 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$106 | Average$194 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$128 | Average$264 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$189 | Average$391 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$199 | Average$346 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$208 | Average$374 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$220 | Average$293 | FlexibilityNo cancel fee | On-time62% |