$136+ Cheap flights from Philadelphia to Denver (PHL - DEN)
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 2/17. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
Dec 9 — Dec 161
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 April or February, booked 44 days in advance, depart on a Wednesday or Saturday and return on a Thursday
Cheap flight deals from Philadelphia to Denver
Cheapest
Best
Last-minute
One-way
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 November 9, 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 November 9, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 11/4. 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.
Tue 12/14:16 pm -
1 stop28h 56m
Thu 12/311:59 pm -
1 stop9h 26m
Deal found 11/4![Frontier logo]()
$237
This Frontier deal was found by Cheapflights users on 11/4. 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 12/198:19 pm -
Nonstop4h 17m
Wed 12/2311:31 pm -
Nonstop3h 40m
Deal found 11/4![Frontier logo]()
$238
This Kiwi.com deal was found by Cheapflights users on 11/4. 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 11/269:32 pm -
1 stop12h 52m
Tue 12/18:46 pm -
2 stops24h 23m
Deal found 11/4![Frontier logo]()
$239
This Trip.com deal was found by Cheapflights users on 11/7. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/76:31 pm -
1 stop13h 58m
Mon 12/149:08 am -
1 stop8h 22m
Deal found 11/7![Frontier logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 11/4. 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 12/174:41 pm -
1 stop24h 47m
Fri 1/810:41 am -
1 stop5h 34m
Deal found 11/4![Frontier logo]()
$241
This Frontier deal was found by Cheapflights users on 11/4. 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.
Tue 12/88:40 am -
2 stops15h 15m
Sat 12/127:10 am -
2 stops14h 01m
Deal found 11/4![Frontier logo]()
$242
This Frontier deal was found by Cheapflights users on 11/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:40 am -
2 stops15h 15m
Tue 12/1510:18 am -
2 stops8h 49m
Deal found 11/7![Frontier logo]()
$243
This Cheapflightsfares deal was found by Cheapflights users on 11/4. 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 12/1810:20 pm -
1 stop12h 33m
Mon 12/218:10 pm -
1 stop12h 06m
Deal found 11/4![Frontier logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Sat 12/512:45 pm -
1 stop9h 12m
Thu 12/1010:26 am -
2 stops8h 41m
Deal found 11/5![Frontier logo]()
$245
This Frontier deal was found by Cheapflights users on 11/5. 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.
Fri 12/1810:20 pm -
1 stop12h 33m
Tue 12/2911:52 pm -
1 stop8h 15m
Deal found 11/5![Frontier logo]()
$246
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Wed 12/212:49 pm -
2 stops11h 01m
Thu 12/1011:59 pm -
1 stop7h 01m
Deal found 11/5![Frontier logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Sun 12/208:19 pm -
Nonstop4h 17m
Wed 12/3011:31 pm -
Nonstop3h 40m
Deal found 11/5![Frontier logo]()
$248
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 November 9, 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 November 9, 2026.
This United Airlines deal was found by Cheapflights users on 11/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/53:35 pm -
Nonstop4h 20m
Wed 12/910:15 am -
Nonstop3h 36m
Deal found 11/5![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 11/6. 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.
Wed 2/35:10 am -
Nonstop4h 20m
Wed 2/106:45 pm -
Nonstop3h 30m
Deal found 11/6![Southwest logo]()
$279
This Southwest deal was found by Cheapflights users on 11/6. 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.
Wed 1/66:05 am -
2 stops9h 15m
Tue 1/1211:50 am -
2 stops7h 30m
Deal found 11/6![Southwest logo]()
$309
This United Airlines deal was found by Cheapflights users on 11/7. 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.
Fri 12/184:58 pm -
1 stop8h 22m
Mon 12/2111:59 pm -
Nonstop3h 32m
Deal found 11/7![United Airlines logo]()
$329
This Southwest deal was found by Cheapflights users on 11/8. 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 1/155:00 am -
Nonstop4h 20m
Mon 1/187:25 pm -
Nonstop3h 30m
Deal found 11/8![Southwest logo]()
$319
This United Airlines deal was found by Cheapflights users on 11/4. 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.
Thu 12/35:41 pm -
1 stop7h 48m
Sun 12/610:15 am -
Nonstop3h 36m
Deal found 11/4![United Airlines logo]()
$349
This Southwest deal was found by Cheapflights users on 11/8. 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.
Thu 12/105:00 am -
Nonstop4h 20m
Mon 12/1411:05 am -
2 stops8h 20m
Deal found 11/8![Southwest logo]()
$324
This United Airlines deal was found by Cheapflights users on 11/4. 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.
Thu 11/267:45 am -
Nonstop4h 20m
Mon 11/306:08 pm -
Nonstop3h 31m
Deal found 11/4![United Airlines logo]()
$437
This Southwest deal was found by Cheapflights users on 11/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/184:20 pm -
1 stop6h 40m
Mon 12/2111:10 am -
2 stops9h 00m
Deal found 11/7![Southwest logo]()
$440
This Southwest deal was found by Cheapflights users on 11/8. 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 12/182:15 pm -
2 stops8h 45m
Sun 12/202:40 pm -
2 stops7h 10m
Deal found 11/8![Southwest logo]()
$445
This Southwest deal was found by Cheapflights users on 11/4. 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.
Thu 12/35:35 am -
2 stops10h 00m
Mon 12/710:55 am -
2 stops9h 15m
Deal found 11/4![Southwest logo]()
$452
Last-minute flights from Philadelphia to DenverDiscover last-minute flight deals from Philadelphia to Denver. Data last updated November 9, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Denver. Data last updated November 9, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 11/6. 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.
Wed 11/185:45 pm -
1 stop23h 50m
Wed 11/251:03 pm -
1 stop14h 58m
Deal found 11/6![Frontier logo]()
$267
This Frontier deal was found by Cheapflights users on 11/5. 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.
Wed 11/186:00 am -
1 stop11h 53m
Fri 11/2711:59 pm -
Nonstop3h 26m
Deal found 11/5![Frontier logo]()
$279
This Frontier deal was found by Cheapflights users on 11/5. 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.
Wed 11/189:30 am -
1 stop13h 16m
Fri 12/410:45 am -
1 stop10h 43m
Deal found 11/5![Frontier logo]()
$294
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Wed 11/186:00 am -
1 stop11h 53m
Thu 11/2610:58 am -
1 stop10h 03m
Deal found 11/5![Frontier logo]()
$298
This Kiwi.com deal was found by Cheapflights users on 11/5. 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 11/196:00 am -
1 stop8h 08m
Fri 11/2711:59 pm -
Nonstop3h 26m
Deal found 11/5![Frontier logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 11/5. 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 11/196:00 am -
1 stop8h 08m
Fri 12/49:00 am -
1 stop7h 32m
Deal found 11/5![Frontier logo]()
$313
This Kiwi.com deal was found by Cheapflights users on 11/5. 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 11/196:00 am -
1 stop8h 08m
Thu 11/2610:58 am -
1 stop10h 03m
Deal found 11/5![Frontier logo]()
$314
This Kiwi.com deal was found by Cheapflights users on 11/5. 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 11/198:30 am -
1 stop7h 03m
Wed 12/28:00 am -
2 stops13h 09m
Deal found 11/5![Frontier logo]()
$320
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 November 9, 2026.
Search for one-way flight options from Philadelphia to Denver. Find affordable one-way fares based on user searches. Data last updated November 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 11/7. 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.
Wed 2/176:15 am -
1 stop17h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![Frontier logo]()
$136
This Super.com deal was found by Cheapflights users on 11/7. 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.
Wed 12/96:31 pm -
1 stop13h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![Frontier logo]()
$138
This American Airlines deal was found by Cheapflights users on 11/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/28:52 am -
Nonstop4h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![American Airlines logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 11/7. 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 1/57:16 am -
2 stops39h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![Frontier logo]()
$141
This Super.com deal was found by Cheapflights users on 11/4. 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.
Wed 11/258:38 pm -
Nonstop4h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 11/4. 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 12/218:29 pm -
Nonstop4h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Frontier logo]()
$145
This Cheapflightsfares deal was found by Cheapflights users on 11/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/116:31 pm -
1 stop13h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Frontier logo]()
$146
This Super.com deal was found by Cheapflights users on 11/8. 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.
Sun 1/318:45 am -
1 stop25h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 11/8. 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 3/68:14 pm -
Nonstop4h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Frontier logo]()
$149
This United Airlines deal was found by Cheapflights users on 11/6. 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.
Wed 12/25:41 pm -
1 stop7h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/6![United Airlines logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 11/4. 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 12/112:49 pm -
2 stops34h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Frontier logo]()
$151
This Frontier deal was found by Cheapflights users on 11/4. 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.
Wed 12/27:25 am -
2 stops16h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Frontier logo]()
$152
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 November 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $237 (Cheapflightsfares) |
One-way from | $136 (Kiwi.com) |
Popular in | June |
Cheapest in | April |
Average price | $397 |
Good round-trip deal | $354 or less |
Good one-way deal | $210 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 7,457,451 searches. Data last updated November 9, 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
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Thu 12/17
9:29 am-3:41 pm
1 stop8h 12m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$159
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Thu 12/10
9:45 am-2:19 pm
1 stop6h 34m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$165
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Thu 1/7
5:25 pm-9:35 pm
1 stop6h 10m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$165
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Thu 1/14
9:55 am-3:00 pm
1 stop7h 05m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$165
Quickest round-trip
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Fri 12/11
5:15 pm-7:30 pm
Nonstop4h 15m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$165
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Thu 12/17
7:35 am-10:04 am
Nonstop4h 29m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$165
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Thu 1/14
6:05 am-1:20 pm
2 stops9h 15m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$180
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Tue 1/19
7:46 am-10:15 am
Nonstop4h 29m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$200
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Sun 12/20
12:25 pm-6:20 pm
1 stop7h 55m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$203
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Mon 12/21
5:00 am-7:15 am
Nonstop4h 15m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$211
Showing 1-10 of 21 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 November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | 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?
Booking 43 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, April is the cheapest month in which you can book a flight from Philadelphia to Denver (average of $322). Flying from Philadelphia to Denver in June is currently the most expensive (average of $469). 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 November 9, 2026.
It’s typically best to fly out from Philadelphia to Denver in the evening. Doing so could potentially save you 40% 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 October 31, 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 20% of weekly flights between Philadelphia and Denver have experienced delays in the past year, with the average delay time being 158 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 early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Thursday 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 13% 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 November 9, 2026.
Peruse reviews from past customers who have flown with Southwest,United Airlines, andJetBlue 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.
Overall
8.0
Crew
8.6
Comfort
8.0
Entertainment
7.4
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Crew
8.6
Comfort
8.0
Entertainment
7.4
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Crew
8.6
Comfort
8.0
Entertainment
7.4
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Crew
8.6
Comfort
8.0
Entertainment
7.4
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Crew
8.6
Comfort
8.0
Entertainment
7.4
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Crew
8.6
Comfort
8.0
Entertainment
7.4
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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
Westminster
Lakewood
Centennial
Broomfield
Englewood
Golden
Silverthorne
Fort Morgan
Limon
Greeley
Frisco
Winter Park
Wheat Ridge
Black Hawk
Central City
Manitou Springs
Glendale
Cripple Creek
Evergreen
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Philadelphia and Denver flights
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Other flights from Philadelphia
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Top 6 airlines flying from Philadelphia to Denver
Discover the top 6 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 7,457,451 searches. Data last updated November 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$98 | Average$270 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$220 | Average$346 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$236 | Average$387 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$240 | Average$453 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$245 | Average$446 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$260 | Average$452 | FlexibilityNo cancel fee | On-time63% |