$72+ Cheap flights from Pennsylvania to Denver (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 5/25. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
May 15 — May 221
Round-trip
1 adult, Economy
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Cheapest flights from Pennsylvania to DenverExplore the most affordable flight options available from Pennsylvania to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 15, 2026.
Explore the most affordable flight options available from Pennsylvania to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 15, 2026.
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.
Mon 5/252:50 pm
ABE
- DEN
Nonstop4h 02m
Allegiant Air
Fri 5/295:42 pm
DEN
- ABE
Nonstop3h 22m
Allegiant Air
Deal found 4/15![Allegiant Air logo]()
$132
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/208:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Tue 5/2611:54 pm
DEN
- PHL
1 stop10h 31m
Frontier
Deal found 4/13![Frontier logo]()
$132
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.
Mon 5/44:08 pm
PHL
- DEN
2 stops25h 57m
Multiple Airlines
Tue 5/511:59 pm
DEN
- PHL
Nonstop3h 38m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$133
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.
Mon 5/118:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Sun 5/177:15 am
DEN
- PHL
1 stop15h 51m
Frontier
Deal found 4/14![Frontier logo]()
$134
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/238:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Mon 5/257:00 am
DEN
- PHL
1 stop9h 16m
Frontier
Deal found 4/13![Frontier logo]()
$135
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.
Tue 5/128:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Wed 5/1310:00 am
DEN
- PHL
2 stops20h 54m
Frontier
Deal found 4/14![Frontier logo]()
$136
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.
Thu 5/288:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Mon 6/111:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/14![Frontier logo]()
$137
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.
Fri 5/298:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Sat 6/64:34 pm
DEN
- PHL
1 stop11h 47m
Frontier
Deal found 4/14![Frontier logo]()
$138
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/248:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Thu 5/286:03 am
DEN
- PHL
1 stop8h 35m
Frontier
Deal found 4/13![Frontier logo]()
$139
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/38:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Mon 6/811:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/12![Frontier logo]()
$140
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.
Wed 5/68:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Wed 5/1311:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/15![Frontier logo]()
$141
This Cheapflightsfares deal was found by Cheapflights users on 4/10. 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 6/57:50 pm
PHL
- DEN
1 stop16h 14m
Frontier
Mon 6/811:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/10![Frontier logo]()
$142
Best flights from Pennsylvania to DenverDiscover carefully curated flight deals from Pennsylvania to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 15, 2026.
Discover carefully curated flight deals from Pennsylvania to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 15, 2026.
This Southwest deal was found by Cheapflights users on 4/11. 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 6/102:20 pm
PHL
- DEN
Nonstop4h 00m
Southwest
Wed 6/177:25 pm
DEN
- PHL
Nonstop3h 35m
Southwest
Deal found 4/11![Southwest logo]()
$210
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/94:05 pm
IAD
- DEN
Nonstop4h 10m
United Airlines
Sat 5/166:00 am
DEN
- IAD
Nonstop3h 28m
United Airlines
Deal found 4/13![United Airlines logo]()
$257
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/115:59 pm
LGA
- DEN
Nonstop4h 40m
Delta
Wed 8/197:00 am
DEN
- LGA
Nonstop3h 52m
Delta
Deal found 4/14![Delta logo]()
$257
This JetBlue 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/268:20 pm
JFK
- DEN
Nonstop4h 39m
JetBlue
Wed 7/2911:59 pm
DEN
- JFK
Nonstop3h 51m
JetBlue
Deal found 4/14![JetBlue logo]()
$282
This Alaska Airlines deal was found by Cheapflights users on 4/10. 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.
Mon 5/49:00 am
EWR
- DEN
2 stops16h 59m
Alaska Airlines
Sat 5/167:21 pm
DEN
- EWR
1 stop9h 31m
Alaska Airlines
Deal found 4/10![Alaska Airlines logo]()
$431
This Southwest deal was found by Cheapflights users on 4/10. 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 5/95:35 am
PHL
- DEN
Nonstop4h 05m
Southwest
Sat 5/95:30 pm
DEN
- PHL
Nonstop3h 30m
Southwest
Deal found 4/10![Southwest logo]()
$221
This Delta deal was found by Cheapflights users on 4/11. 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.
Wed 5/62:55 pm
DCA
- DEN
1 stop7h 09m
Delta
Tue 5/123:12 pm
DEN
- DCA
1 stop5h 47m
Delta
Deal found 4/11![Delta logo]()
$277
This JetBlue 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/297:57 pm
JFK
- DEN
Nonstop4h 48m
JetBlue
Fri 6/511:40 pm
DEN
- JFK
Nonstop3h 49m
JetBlue
Deal found 4/13![JetBlue logo]()
$287
This United Airlines deal was found by Cheapflights users on 4/11. 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 8/57:59 pm
MDT
- DEN
1 stop6h 31m
United Airlines
Tue 8/116:13 am
DEN
- MDT
1 stop5h 50m
United Airlines
Deal found 4/11![United Airlines logo]()
$303
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.
Tue 6/238:55 pm
LGA
- DEN
Nonstop4h 30m
Southwest
Sun 6/286:05 am
DEN
- LGA
Nonstop3h 40m
Southwest
Deal found 4/14![Southwest logo]()
$277
This Delta deal was found by Cheapflights users on 4/10. 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.
Sat 7/47:45 am
LGA
- DEN
Nonstop4h 10m
Delta
Wed 7/85:20 pm
DEN
- LGA
Nonstop3h 53m
Delta
Deal found 4/10![Delta logo]()
$277
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/159:24 pm
EWR
- DEN
Nonstop4h 35m
United Airlines
Sun 5/176:00 am
DEN
- EWR
Nonstop3h 50m
United Airlines
Deal found 4/14![United Airlines logo]()
$309
This Southwest deal was found by Cheapflights users on 4/10. 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 5/25:05 pm
IAD
- DEN
Nonstop4h 00m
Southwest
Wed 5/66:45 am
DEN
- IAD
1 stop7h 05m
Southwest
Deal found 4/10![Southwest logo]()
$287
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/269:00 am
JFK
- DEN
Nonstop4h 34m
Delta
Sat 5/21:46 pm
DEN
- JFK
Nonstop3h 59m
Delta
Deal found 4/12![Delta logo]()
$287
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3111:55 am
EWR
- DEN
Nonstop4h 21m
United Airlines
Sat 9/56:00 am
DEN
- EWR
Nonstop3h 46m
United Airlines
Deal found 4/14![United Airlines logo]()
$309
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.
Sat 5/27:15 am
LGA
- DEN
Nonstop4h 20m
Southwest
Mon 5/46:10 am
DEN
- LGA
Nonstop3h 40m
Southwest
Deal found 4/13![Southwest logo]()
$287
This Delta deal was found by Cheapflights users on 4/10. 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.
Wed 7/88:30 am
JFK
- DEN
Nonstop4h 28m
Delta
Tue 7/146:35 am
DEN
- JFK
Nonstop3h 52m
Delta
Deal found 4/10![Delta logo]()
$307
This United Airlines deal was found by Cheapflights users on 4/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/17:59 pm
MDT
- DEN
1 stop6h 31m
United Airlines
Wed 7/88:00 am
DEN
- MDT
1 stop6h 54m
United Airlines
Deal found 4/9![United Airlines logo]()
$311
This Southwest deal was found by Cheapflights users on 4/9. 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.
Fri 5/82:15 pm
PHL
- DEN
2 stops7h 05m
Southwest
Mon 5/117:05 pm
DEN
- PHL
Nonstop3h 30m
Southwest
Deal found 4/9![Southwest logo]()
$294
This Delta deal was found by Cheapflights users on 4/10. 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.
Tue 5/196:58 pm
IAD
- DEN
1 stop6h 43m
Delta
Thu 5/2112:25 pm
DEN
- IAD
1 stop6h 59m
Delta
Deal found 4/10![Delta logo]()
$316
This Southwest deal was found by Cheapflights users on 4/10. 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.
Sun 5/37:15 am
LGA
- DEN
Nonstop4h 20m
Southwest
Thu 5/77:00 am
DEN
- LGA
1 stop7h 50m
Southwest
Deal found 4/10![Southwest logo]()
$297
This Delta deal was found by Cheapflights users on 4/11. 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.
Mon 5/46:00 pm
DCA
- DEN
1 stop8h 36m
Delta
Tue 5/512:55 am
DEN
- DCA
1 stop8h 30m
Delta
Deal found 4/11![Delta logo]()
$317
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/275:43 pm
SCE
- DEN
1 stop7h 54m
United Airlines
Tue 6/211:59 pm
DEN
- SCE
1 stop7h 52m
United Airlines
Deal found 4/13![United Airlines logo]()
$351
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.
Tue 5/269:05 pm
LGA
- DEN
Nonstop4h 35m
Southwest
Sat 5/305:45 am
DEN
- LGA
1 stop8h 10m
Southwest
Deal found 4/14![Southwest logo]()
$297
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/46:15 pm
ABE
- DEN
1 stop8h 18m
Delta
Mon 6/81:15 pm
DEN
- ABE
1 stop7h 15m
Delta
Deal found 4/14![Delta logo]()
$319
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2010:35 pm
IAD
- DEN
Nonstop4h 09m
United Airlines
Tue 5/266:13 am
DEN
- IAD
Nonstop3h 28m
United Airlines
Deal found 4/12![United Airlines logo]()
$353
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.
Mon 6/88:55 pm
LGA
- DEN
Nonstop4h 30m
Southwest
Tue 6/165:25 pm
DEN
- LGA
Nonstop3h 40m
Southwest
Deal found 4/14![Southwest logo]()
$312
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:55 pm
JFK
- DEN
Nonstop4h 45m
Delta
Thu 5/216:30 am
DEN
- JFK
Nonstop3h 50m
Delta
Deal found 4/14![Delta logo]()
$322
This United Airlines deal was found by Cheapflights users on 4/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/67:59 pm
SCE
- DEN
1 stop6h 45m
United Airlines
Sat 5/93:52 pm
DEN
- SCE
1 stop5h 50m
United Airlines
Deal found 4/9![United Airlines logo]()
$366
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.
Sat 5/2311:35 am
LGA
- DEN
1 stop9h 35m
Southwest
Tue 5/2611:10 am
DEN
- LGA
Nonstop3h 40m
Southwest
Deal found 4/14![Southwest logo]()
$318
Last-minute flights from Pennsylvania to DenverDiscover last-minute flight deals from Pennsylvania to Denver. Data last updated April 15, 2026 and is based on user searches.
Discover last-minute flight deals from Pennsylvania to Denver. Data last updated April 15, 2026 and is based on user searches.
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/198:36 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Fri 5/111:59 pm
DEN
- PHL
Nonstop3h 35m
Frontier
Deal found 4/12![Frontier logo]()
$173
This Frontier deal was found by Cheapflights users on 4/11. 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 4/198:36 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Tue 4/287:05 pm
DEN
- PHL
1 stop9h 45m
Frontier
Deal found 4/11![Frontier logo]()
$181
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/193:27 pm
PHL
- DEN
1 stop9h 18m
Frontier
Wed 4/291:09 pm
DEN
- PHL
1 stop9h 45m
Frontier
Deal found 4/12![Frontier logo]()
$188
This Cheapflightsfares deal was found by Cheapflights users on 4/10. 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 4/238:41 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Tue 4/2811:59 pm
DEN
- PHL
1 stop8h 39m
Frontier
Deal found 4/10![Frontier logo]()
$184
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/245:01 am
PHL
- DEN
1 stop8h 50m
Frontier
Mon 5/411:59 pm
DEN
- PHL
Nonstop3h 35m
Frontier
Deal found 4/14![Frontier logo]()
$145
This Cheapflightsfares deal was found by Cheapflights users on 4/10. 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 4/246:43 am
PHL
- DEN
1 stop17h 11m
Frontier
Mon 4/272:37 pm
DEN
- PHL
1 stop14h 13m
Frontier
Deal found 4/10![Frontier logo]()
$169
This Cheapflightsfares deal was found by Cheapflights users on 4/10. 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 4/243:30 pm
PHL
- DEN
1 stop10h 29m
Frontier
Sat 4/2511:59 pm
DEN
- PHL
Nonstop3h 36m
Frontier
Deal found 4/10![Frontier logo]()
$178
This Frontier deal was found by Cheapflights users on 4/11. 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 4/241:59 pm
DCA
- DEN
Nonstop4h 05m
Frontier
Mon 5/47:34 am
DEN
- DCA
Nonstop3h 25m
Frontier
Deal found 4/11![Frontier logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 4/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/87:27 pm
IAD
- DEN
2 stops23h 04m
Frontier
Mon 5/1111:54 pm
DEN
- IAD
1 stop8h 18m
Frontier
Deal found 4/9![Frontier logo]()
$189
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.
Mon 5/252:50 pm
ABE
- DEN
Nonstop4h 02m
Allegiant Air
Fri 5/295:42 pm
DEN
- ABE
Nonstop3h 22m
Allegiant Air
Deal found 4/15![Allegiant Air logo]()
$132
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/252:50 pm
ABE
- DEN
Nonstop4h 02m
Allegiant Air
Mon 6/15:42 pm
DEN
- ABE
Nonstop3h 22m
Allegiant Air
Deal found 4/12![Allegiant Air logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 4/11. 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 5/306:49 am
IAD
- DEN
1 stop9h 15m
Frontier
Mon 6/111:59 pm
DEN
- IAD
2 stops21h 10m
Frontier
Deal found 4/11![Frontier logo]()
$190
One-way flights from Pennsylvania to DenverSearch for one-way flight options from Pennsylvania to Denver. Find affordable one-way fares based on user searches. Data last updated April 15, 2026.
Search for one-way flight options from Pennsylvania to Denver. Find affordable one-way fares based on user searches. Data last updated April 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/10. 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 5/252:50 pm
ABE
- DEN
Nonstop4h 02m
Allegiant Air
Deal found 4/10![Allegiant Air logo]()
$72
This Trip.com deal was found by Cheapflights users on 4/11. 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.
Thu 5/285:55 am
EWR
- DEN
1 stop10h 09m
Frontier
Deal found 4/11![Frontier logo]()
$77
This Trip.com deal was found by Cheapflights users on 4/11. 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.
Tue 6/21:30 pm
EWR
- DEN
1 stop19h 03m
Frontier
Deal found 4/11![Frontier logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 4/10. 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 5/110:29 pm
EWR
- DEN
1 stop15h 45m
Frontier
Deal found 4/10![Frontier logo]()
$79
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:55 am
EWR
- DEN
1 stop10h 09m
Frontier
Deal found 4/13![Frontier logo]()
$80
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/125:55 am
EWR
- DEN
1 stop18h 29m
Frontier
Deal found 4/12![Frontier logo]()
$81
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.
Wed 5/66:30 am
EWR
- DEN
1 stop18h 31m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$83
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.
Sat 5/166:30 am
EWR
- DEN
1 stop18h 31m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$84
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/78:15 pm
PIT
- DEN
1 stop14h 09m
Frontier
Deal found 4/14![Frontier logo]()
$85
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/144:24 pm
PHL
- DEN
1 stop30h 26m
Frontier
Deal found 4/14![Frontier logo]()
$85
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.
Tue 5/2610:29 pm
EWR
- DEN
1 stop12h 36m
Frontier
Deal found 4/13![Frontier logo]()
$85
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/159:44 am
PIT
- DEN
1 stop24h 40m
Frontier
Deal found 4/14![Frontier logo]()
$86
Find flight deals from Pennsylvania to Denver
Keep the following information in mind while searching for Pennsylvania to Denver flight deals. Data was last updated April 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $132 (Cheapflightsfares) |
One-way from | $72 (Kiwi.com) |
Popular in | March |
Cheapest in | August |
Average price | $320 |
Good round-trip deal | $234 or less |
Good one-way deal | $145 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Pennsylvania 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 April 15, 2026.
Use the filters below to find and compare flights from Pennsylvania 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
Wed 6/10
2:20 pm-4:20 pm
Nonstop4h 00m
Denver Intl
Wed 6/17
7:25 pm-1:00 am
Nonstop3h 35m
$210
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Sat 5/9
5:35 am-7:40 am
Nonstop4h 05m
Denver Intl
Sat 5/9
5:30 pm-11:00 pm
Nonstop3h 30m
$221
Washington, D.C.Denver
IAD - DEN
IADDEN
Washington, D.C. Dulles Intl
Sat 5/9
4:05 pm-6:15 pm
Nonstop4h 10m
Denver Intl
Sat 5/16
6:00 am-11:28 am
Nonstop3h 28m
$257
New YorkDenver
LGA - DEN
LGADEN
New York LaGuardia
Tue 8/11
5:59 pm-8:39 pm
Nonstop4h 40m
Denver Intl
Wed 8/19
7:00 am-12:52 pm
Nonstop3h 52m
$257
Washington, D.C.Denver
DCA - DEN
DCADEN
Washington, D.C. Reagan-National
Wed 5/6
2:55 pm-8:04 pm
1 stop7h 09m
Denver Intl
Tue 5/12
3:12 pm-10:59 pm
1 stop5h 47m
$277
New YorkDenver
LGA - DEN
LGADEN
New York LaGuardia
Tue 6/23
8:55 pm-11:25 pm
Nonstop4h 30m
Denver Intl
Sun 6/28
6:05 am-11:45 am
Nonstop3h 40m
$277
New YorkDenver
LGA - DEN
LGADEN
New York LaGuardia
Sat 7/4
7:45 am-9:55 am
Nonstop4h 10m
Denver Intl
Wed 7/8
5:20 pm-11:13 pm
Nonstop3h 53m
$277
New YorkDenver
JFK - DEN
JFKDEN
New York John F Kennedy Intl
Sun 7/26
8:20 pm-10:59 pm
Nonstop4h 39m
Denver Intl
Wed 7/29
11:59 pm-5:50 am
Nonstop3h 51m
$282
New YorkDenver
JFK - DEN
JFKDEN
New York John F Kennedy Intl
Fri 5/29
7:57 pm-10:45 pm
Nonstop4h 48m
Denver Intl
Fri 6/5
11:40 pm-5:29 am
Nonstop3h 49m
$287
Washington, D.C.Denver
IAD - DEN
IADDEN
Washington, D.C. Dulles Intl
Sat 5/2
5:05 pm-7:05 pm
Nonstop4h 00m
Denver Intl
Wed 5/6
6:45 am-3:50 pm
1 stop7h 05m
$287
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Pennsylvania to Denver
Have a flexible travel schedule? Discover the best time to fly to Denver from Pennsylvania with our price prediction graph.
PHL-DEN
IAD-DEN
LGA-DEN
JFK-DEN
EWR-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 Pennsylvania to Denver
USPA-DEN
PHL-DEN
IAD-DEN
LGA-DEN
JFK-DEN
What is the cheapest month to book a flight from Pennsylvania to Denver?
Currently, February is the cheapest month in which you can book a flight from Pennsylvania to Denver (average of $85). Flying from Pennsylvania to Denver in March is currently the most expensive (average of $149). 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 PA to DEN?
Find hourly flight availability from Pennsylvania 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 April 15, 2026.
One of the essential ways to save on airfare from Pennsylvania to Denver is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 12% on airfare.
What is the cheapest day to fly from Pennsylvania to Denver?
Use this chart to determine the cheapest time to fly round-trip from Pennsylvania to Denver. Price data was last updated on April 11, 2026.
Travelers seeking maximum savings on their Pennsylvania to Denver flight should consider departing on Wednesday mornings when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Pennsylvania to Denver
Explore weekly flight availability from Pennsylvania to Denver. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 15, 2026.
The most flights from USPA to DEN are scheduled on a Monday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).
How much does it cost to fly round-trip from Pennsylvania to Denver?
Related info for your journey
Find useful and relevant information for your journey from Pennsylvania 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
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
Denver flight routes
Flights by cabin class
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Alternative routes for Pennsylvania to Denver
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Denver by adding a car rental and/or hotel reservation to your travel itinerary.
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 April 15, 2026.
Search flights from Pennsylvania to Denver by cabin class
Find flights from Pennsylvania to Denver, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Pennsylvania and Denver flights
Browse other Pennsylvania and Denver flight options. Last updated on April 15, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Pennsylvania to Denver flights
Consider these flights traveling from Pennsylvania to Denver.
Top 7 airlines flying from Pennsylvania to Denver
Discover the top 7 airlines that operate flights from Pennsylvania 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 April 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$72 | Average$234 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$106 | Average$205 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$128 | Average$319 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$145 | Average$347 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$177 | Average$429 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$184 | Average$405 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$199 | Average$402 | FlexibilityNo cancel fee | On-time63% |