$84+ Cheap flights from Pennsylvania to Colorado
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 4/13. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
Apr 19 — Apr 261
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Pennsylvania to Colorado 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.Cheap flight deals from Pennsylvania to Colorado
Cheapest
Best
Last-minute
One-way
Cheapest flights from Pennsylvania to ColoradoExplore the most affordable flight options available from Pennsylvania to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 20, 2026.
Explore the most affordable flight options available from Pennsylvania to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 20, 2026.
This deal was found by Cheapflights users on 3/15. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:00 am
DCA
- DEN
Nonstop4h 12m
Frontier
Mon 4/204:36 pm
DEN
- DCA
Nonstop3h 23m
Frontier
Deal found 3/15![Frontier logo]()
$145
This Super.com deal was found by Cheapflights users on 3/15. 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.
Sun 4/198:00 am
DCA
- DEN
Nonstop4h 12m
Frontier
Wed 4/224:36 pm
DEN
- DCA
Nonstop3h 23m
Frontier
Deal found 3/15![Frontier logo]()
$146
This Cheapflightsfares deal was found by Cheapflights users on 3/16. 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.
Thu 4/168:00 am
DCA
- DEN
Nonstop4h 12m
Frontier
Mon 4/207:35 am
DEN
- DCA
Nonstop3h 25m
Frontier
Deal found 3/16![Frontier logo]()
$147
This Frontier deal was found by Cheapflights users on 3/16. 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.
Sun 5/107:00 am
DCA
- DEN
Nonstop4h 07m
Frontier
Tue 5/194:27 pm
DEN
- DCA
Nonstop3h 31m
Frontier
Deal found 3/16![Frontier logo]()
$148
This Super.com deal was found by Cheapflights users on 3/18. 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 4/211:59 pm
DCA
- DEN
Nonstop4h 05m
Frontier
Wed 4/224:36 pm
DEN
- DCA
Nonstop3h 23m
Frontier
Deal found 3/18![Frontier logo]()
$155
This Cheapflightsfares deal was found by Cheapflights users on 3/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:00 pm
DCA
- DEN
Nonstop4h 11m
Frontier
Tue 5/54:27 pm
DEN
- DCA
Nonstop3h 31m
Frontier
Deal found 3/17![Frontier logo]()
$156
This Cheapflightsfares deal was found by Cheapflights users on 3/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:00 pm
DCA
- DEN
Nonstop4h 11m
Frontier
Sun 5/37:35 am
DEN
- DCA
Nonstop3h 25m
Frontier
Deal found 3/17![Frontier logo]()
$157
This Frontier deal was found by Cheapflights users on 3/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:00 pm
DCA
- DEN
Nonstop4h 11m
Frontier
Mon 5/47:35 am
DEN
- DCA
Nonstop3h 25m
Frontier
Deal found 3/17![Frontier logo]()
$158
This Cheapflightsfares deal was found by Cheapflights users on 3/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/177:00 am
DCA
- DEN
Nonstop4h 07m
Frontier
Wed 5/207:31 am
DEN
- DCA
Nonstop3h 28m
Frontier
Deal found 3/17![Frontier logo]()
$161
This Cheapflightsfares deal was found by Cheapflights users on 3/16. 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.
Fri 5/11:59 pm
DCA
- DEN
Nonstop4h 05m
Frontier
Thu 5/77:31 am
DEN
- DCA
Nonstop3h 28m
Frontier
Deal found 3/16![Frontier logo]()
$162
This Frontier deal was found by Cheapflights users on 3/15. 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.
Sun 5/107:00 am
DCA
- DEN
Nonstop4h 07m
Frontier
Fri 5/154:27 pm
DEN
- DCA
Nonstop3h 31m
Frontier
Deal found 3/15![Frontier logo]()
$163
This Cheapflightsfares deal was found by Cheapflights users on 3/15. 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.
Tue 5/127:00 am
DCA
- DEN
Nonstop4h 07m
Frontier
Sun 5/177:31 am
DEN
- DCA
Nonstop3h 28m
Frontier
Deal found 3/15![Frontier logo]()
$164
Best flights from Pennsylvania to ColoradoDiscover carefully curated flight deals from Pennsylvania to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 20, 2026.
Discover carefully curated flight deals from Pennsylvania to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 20, 2026.
This Delta deal was found by Cheapflights users on 3/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/221:59 pm
LGA
- DEN
Nonstop4h 34m
Delta
Sat 4/2512:15 pm
DEN
- LGA
Nonstop3h 41m
Delta
Deal found 3/17![Delta logo]()
$227
This Southwest deal was found by Cheapflights users on 3/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/221:25 pm
LGA
- DEN
1 stop7h 45m
Southwest
Sun 4/266:10 am
DEN
- LGA
Nonstop3h 40m
Southwest
Deal found 3/15![Southwest logo]()
$237
This United Airlines deal was found by Cheapflights users on 3/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/238:59 pm
EWR
- DEN
Nonstop4h 29m
United Airlines
Sun 6/2811:59 pm
DEN
- EWR
Nonstop3h 41m
United Airlines
Deal found 3/15![United Airlines logo]()
$309
This Alaska Airlines deal was found by Cheapflights users on 3/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/186:22 pm
IAD
- DEN
1 stop31h 22m
Alaska Airlines
Tue 4/211:16 pm
DEN
- IAD
1 stop26h 25m
Alaska Airlines
Deal found 3/15![Alaska Airlines logo]()
$418
This Delta deal was found by Cheapflights users on 3/16. 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.
Wed 7/87:59 pm
JFK
- DEN
Nonstop4h 50m
Delta
Tue 7/146:30 am
DEN
- JFK
Nonstop3h 55m
Delta
Deal found 3/16![Delta logo]()
$247
This Southwest deal was found by Cheapflights users on 3/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/12:00 pm
LGA
- DEN
Nonstop4h 25m
Southwest
Sun 5/36:10 am
DEN
- LGA
Nonstop3h 40m
Southwest
Deal found 3/15![Southwest logo]()
$247
This American Airlines deal was found by Cheapflights users on 3/19. 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.
Fri 7/312:20 pm
EWR
- ASE
1 stop9h 38m
American Airlines
Tue 8/47:00 am
ASE
- EWR
1 stop7h 30m
American Airlines
Deal found 3/19![American Airlines logo]()
$514
This Delta deal was found by Cheapflights users on 3/19. 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.
Fri 4/177:40 am
LGA
- DEN
Nonstop4h 30m
Delta
Mon 4/207:12 am
DEN
- LGA
Nonstop3h 47m
Delta
Deal found 3/19![Delta logo]()
$247
This Southwest deal was found by Cheapflights users on 3/19. 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 6/65:20 pm
LGA
- DEN
1 stop6h 55m
Southwest
Tue 6/96:10 am
DEN
- LGA
1 stop6h 35m
Southwest
Deal found 3/19![Southwest logo]()
$262
This United Airlines deal was found by Cheapflights users on 3/19. 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 4/187:52 am
EWR
- DEN
Nonstop4h 32m
United Airlines
Sat 4/256:00 am
DEN
- EWR
Nonstop3h 50m
United Airlines
Deal found 3/19![United Airlines logo]()
$309
This Delta deal was found by Cheapflights users on 3/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:10 am
JFK
- DEN
Nonstop4h 37m
Delta
Sun 9/66:30 am
DEN
- JFK
Nonstop3h 55m
Delta
Deal found 3/15![Delta logo]()
$262
This Southwest deal was found by Cheapflights users on 3/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/275:55 pm
IAD
- DEN
Nonstop4h 05m
Southwest
Sat 5/25:45 am
DEN
- IAD
1 stop7h 20m
Southwest
Deal found 3/16![Southwest logo]()
$267
This United Airlines deal was found by Cheapflights users on 3/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/206:00 am
EWR
- DEN
Nonstop4h 23m
United Airlines
Tue 5/2611:59 pm
DEN
- EWR
Nonstop3h 41m
United Airlines
Deal found 3/17![United Airlines logo]()
$309
This Delta deal was found by Cheapflights users on 3/19. 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 7/287:59 pm
JFK
- DEN
Nonstop4h 50m
Delta
Mon 8/311:59 pm
DEN
- JFK
Nonstop3h 52m
Delta
Deal found 3/19![Delta logo]()
$262
This Southwest deal was found by Cheapflights users on 3/19. 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 4/166:05 am
LGA
- DEN
1 stop7h 55m
Southwest
Sat 4/1811:40 am
DEN
- LGA
2 stops7h 35m
Southwest
Deal found 3/19![Southwest logo]()
$272
This Delta deal was found by Cheapflights users on 3/19. 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 7/205:59 pm
LGA
- DEN
Nonstop4h 40m
Delta
Mon 7/277:00 am
DEN
- LGA
Nonstop3h 52m
Delta
Deal found 3/19![Delta logo]()
$262
This United Airlines deal was found by Cheapflights users on 3/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/188:12 pm
IAD
- DEN
Nonstop4h 03m
United Airlines
Mon 4/2011:59 pm
DEN
- IAD
Nonstop3h 29m
United Airlines
Deal found 3/15![United Airlines logo]()
$337
This Southwest deal was found by Cheapflights users on 3/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/156:10 am
DCA
- DEN
1 stop5h 25m
Southwest
Mon 5/181:45 pm
DEN
- DCA
1 stop7h 00m
Southwest
Deal found 3/16![Southwest logo]()
$297
This Delta deal was found by Cheapflights users on 3/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/54:05 pm
JFK
- DEN
Nonstop4h 47m
Delta
Fri 6/1211:59 pm
DEN
- JFK
Nonstop3h 52m
Delta
Deal found 3/17![Delta logo]()
$277
This United Airlines deal was found by Cheapflights users on 3/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1610:35 pm
IAD
- DEN
Nonstop4h 09m
United Airlines
Wed 4/226:00 am
DEN
- IAD
Nonstop3h 31m
United Airlines
Deal found 3/16![United Airlines logo]()
$337
This Southwest deal was found by Cheapflights users on 3/19. 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 5/212:15 pm
DCA
- DEN
2 stops8h 55m
Southwest
Sun 5/37:00 am
DEN
- DCA
1 stop6h 40m
Southwest
Deal found 3/19![Southwest logo]()
$302
This Delta deal was found by Cheapflights users on 3/16. 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.
Fri 4/246:29 pm
LGA
- DEN
Nonstop4h 36m
Delta
Mon 4/277:12 am
DEN
- LGA
Nonstop3h 47m
Delta
Deal found 3/16![Delta logo]()
$282
This Southwest deal was found by Cheapflights users on 3/19. 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 4/175:55 am
IAD
- DEN
Nonstop3h 50m
Southwest
Fri 4/246:40 am
DEN
- IAD
1 stop8h 25m
Southwest
Deal found 3/19![Southwest logo]()
$307
This Delta deal was found by Cheapflights users on 3/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/267:30 am
LGA
- DEN
Nonstop4h 26m
Delta
Wed 8/511:00 am
DEN
- LGA
Nonstop3h 54m
Delta
Deal found 3/17![Delta logo]()
$282
This United Airlines deal was found by Cheapflights users on 3/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/38:59 pm
EWR
- DEN
Nonstop4h 29m
United Airlines
Mon 8/1011:59 pm
DEN
- EWR
Nonstop3h 41m
United Airlines
Deal found 3/17![United Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 3/19. 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.
Fri 4/106:29 pm
LGA
- DEN
Nonstop4h 40m
Delta
Mon 4/135:55 pm
DEN
- LGA
Nonstop3h 48m
Delta
Deal found 3/19![Delta logo]()
$282
This American Airlines deal was found by Cheapflights users on 3/20. 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.
Thu 3/266:30 am
JFK
- ASE
2 stops11h 36m
American Airlines
Mon 3/307:00 am
ASE
- JFK
1 stop8h 14m
American Airlines
Deal found 3/20![American Airlines logo]()
$609
This Southwest deal was found by Cheapflights users on 3/19. 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 4/173:00 pm
DCA
- DEN
1 stop5h 50m
Southwest
Fri 4/243:00 pm
DEN
- DCA
1 stop6h 25m
Southwest
Deal found 3/19![Southwest logo]()
$317
This United Airlines deal was found by Cheapflights users on 3/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:00 am
EWR
- DEN
Nonstop4h 16m
United Airlines
Mon 9/147:05 pm
DEN
- EWR
Nonstop3h 44m
United Airlines
Deal found 3/15![United Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 3/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:30 am
LGA
- DEN
Nonstop4h 26m
Delta
Sun 9/67:00 am
DEN
- LGA
Nonstop3h 52m
Delta
Deal found 3/15![Delta logo]()
$282
Last-minute flights from Pennsylvania to ColoradoDiscover last-minute flight deals from Pennsylvania to Colorado. Data last updated March 20, 2026 and is based on user searches.
Discover last-minute flight deals from Pennsylvania to Colorado. Data last updated March 20, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 3/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/77:00 am
DCA
- DEN
Nonstop4h 07m
Frontier
Tue 4/147:35 am
DEN
- DCA
Nonstop3h 25m
Frontier
Deal found 3/17![Frontier logo]()
$156
This Cheapflightsfares deal was found by Cheapflights users on 3/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/81:00 pm
DCA
- DEN
Nonstop4h 05m
Frontier
Tue 4/144:36 pm
DEN
- DCA
Nonstop3h 23m
Frontier
Deal found 3/17![Frontier logo]()
$157
This Cheapflightsfares deal was found by Cheapflights users on 3/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/98:25 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Thu 4/1611:59 pm
DEN
- PHL
Nonstop3h 35m
Frontier
Deal found 3/17![Frontier logo]()
$167
This Super.com deal was found by Cheapflights users on 3/17. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/128:25 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Sun 4/1911:59 pm
DEN
- PHL
Nonstop3h 35m
Frontier
Deal found 3/17![Frontier logo]()
$166
This Trip.com deal was found by Cheapflights users on 3/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/148:00 am
DCA
- DEN
Nonstop4h 12m
Frontier
Tue 4/144:36 pm
DEN
- DCA
Nonstop3h 23m
Frontier
Deal found 3/17![Frontier logo]()
$164
This deal was found by Cheapflights users on 3/15. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:00 am
DCA
- DEN
Nonstop4h 12m
Frontier
Mon 4/204:36 pm
DEN
- DCA
Nonstop3h 23m
Frontier
Deal found 3/15![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 3/16. 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.
Wed 4/158:00 am
DCA
- DEN
Nonstop4h 12m
Frontier
Fri 4/174:36 pm
DEN
- DCA
Nonstop3h 23m
Frontier
Deal found 3/16![Frontier logo]()
$165
This Cheapflightsfares deal was found by Cheapflights users on 3/15. 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.
Thu 4/168:00 am
DCA
- DEN
Nonstop4h 12m
Frontier
Mon 4/207:35 am
DEN
- DCA
Nonstop3h 25m
Frontier
Deal found 3/15![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 3/17. 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.
Thu 4/168:00 am
DCA
- DEN
Nonstop4h 12m
Frontier
Sun 4/197:35 am
DEN
- DCA
Nonstop3h 25m
Frontier
Deal found 3/17![Frontier logo]()
$166
This Super.com deal was found by Cheapflights users on 3/15. 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.
Sun 4/198:00 am
DCA
- DEN
Nonstop4h 12m
Frontier
Wed 4/224:36 pm
DEN
- DCA
Nonstop3h 23m
Frontier
Deal found 3/15![Frontier logo]()
$146
This Cheapflightsfares deal was found by Cheapflights users on 3/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/198:00 am
DCA
- DEN
Nonstop4h 12m
Frontier
Fri 4/2411:34 am
DEN
- DCA
Nonstop3h 25m
Frontier
Deal found 3/17![Frontier logo]()
$167
This Super.com deal was found by Cheapflights users on 3/18. 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 4/211:59 pm
DCA
- DEN
Nonstop4h 05m
Frontier
Wed 4/224:36 pm
DEN
- DCA
Nonstop3h 23m
Frontier
Deal found 3/18![Frontier logo]()
$155
One-way flights from Pennsylvania to ColoradoSearch for one-way flight options from Pennsylvania to Colorado. Find affordable one-way fares based on user searches. Data last updated March 20, 2026.
Search for one-way flight options from Pennsylvania to Colorado. Find affordable one-way fares based on user searches. Data last updated March 20, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 3/15. 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 4/138:25 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Deal found 3/15![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/72:09 pm
PHL
- DEN
1 stop21h 31m
Frontier
Deal found 3/15![Frontier logo]()
$85
This Super.com deal was found by Cheapflights users on 3/15. 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.
Fri 4/108:33 pm
PHL
- DEN
1 stop12h 27m
Frontier
Deal found 3/15![Frontier logo]()
$90
This Super.com deal was found by Cheapflights users on 3/15. 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.
Sat 4/48:36 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Deal found 3/15![Frontier logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1410:55 pm
LGA
- DEN
1 stop24h 38m
Frontier
Deal found 3/15![Frontier logo]()
$93
This Frontier deal was found by Cheapflights users on 3/16. 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.
Mon 4/68:36 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Deal found 3/16![Frontier logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 4/2010:55 pm
LGA
- DEN
1 stop16h 37m
Frontier
Deal found 3/20![Frontier logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 3/16. 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.
Tue 4/141:00 pm
JFK
- DEN
1 stop25h 09m
Frontier
Deal found 3/16![Frontier logo]()
$95
This WAYA deal was found by Cheapflights users on 3/17. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/79:59 am
LGA
- DEN
1 stop9h 48m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$95
This WAYA deal was found by Cheapflights users on 3/16. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:05 am
IAD
- DEN
1 stop8h 04m
Frontier
Deal found 3/16![Frontier logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 3/16. 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.
Tue 4/218:20 am
IAD
- DEN
1 stop29h 49m
Frontier
Deal found 3/16![Frontier logo]()
$98
This Kiwi.com deal was found by Cheapflights users on 3/17. 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.
Sun 4/196:15 am
PHL
- DEN
1 stop19h 44m
Frontier
Deal found 3/17![Frontier logo]()
$98
Find flight deals from Pennsylvania to Colorado
Keep the following information in mind while searching for Pennsylvania to Colorado flight deals. Data was last updated March 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $145 |
One-way from | $84 (Cheapflightsfares) |
Popular in | March |
Cheapest in | July |
Average price | $384 |
Good round-trip deal | $209 or less |
Good one-way deal | $133 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Pennsylvania to Colorado 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 March 20, 2026.
Use the filters below to find and compare flights from Pennsylvania to Colorado that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
New YorkDenver
LGA - DEN
LGADEN
New York LaGuardia
Wed 4/22
1:59 pm-4:33 pm
Nonstop4h 34m
Denver Intl
Sat 4/25
12:15 pm-5:56 pm
Nonstop3h 41m
$227
New YorkDenver
LGA - DEN
LGADEN
New York LaGuardia
Wed 4/22
1:25 pm-7:10 pm
1 stop7h 45m
Denver Intl
Sun 4/26
6:10 am-11:50 am
Nonstop3h 40m
$237
New YorkDenver
JFK - DEN
JFKDEN
New York John F Kennedy Intl
Wed 7/8
7:59 pm-10:49 pm
Nonstop4h 50m
Denver Intl
Tue 7/14
6:30 am-12:25 pm
Nonstop3h 55m
$247
New YorkDenver
LGA - DEN
LGADEN
New York LaGuardia
Fri 5/1
2:00 pm-4:25 pm
Nonstop4h 25m
Denver Intl
Sun 5/3
6:10 am-11:50 am
Nonstop3h 40m
$247
New YorkDenver
LGA - DEN
LGADEN
New York LaGuardia
Fri 4/17
7:40 am-10:10 am
Nonstop4h 30m
Denver Intl
Mon 4/20
7:12 am-12:59 pm
Nonstop3h 47m
$247
New YorkDenver
LGA - DEN
LGADEN
New York LaGuardia
Sat 6/6
5:20 pm-10:15 pm
1 stop6h 55m
Denver Intl
Tue 6/9
6:10 am-2:45 pm
1 stop6h 35m
$262
New YorkDenver
JFK - DEN
JFKDEN
New York John F Kennedy Intl
Wed 9/2
8:10 am-10:47 am
Nonstop4h 37m
Denver Intl
Sun 9/6
6:30 am-12:25 pm
Nonstop3h 55m
$262
New YorkDenver
JFK - DEN
JFKDEN
New York John F Kennedy Intl
Tue 7/28
7:59 pm-10:49 pm
Nonstop4h 50m
Denver Intl
Mon 8/3
11:59 pm-5:51 am
Nonstop3h 52m
$262
New YorkDenver
LGA - DEN
LGADEN
New York LaGuardia
Mon 7/20
5:59 pm-8:39 pm
Nonstop4h 40m
Denver Intl
Mon 7/27
7:00 am-12:52 pm
Nonstop3h 52m
$262
Washington, D.C.Denver
IAD - DEN
IADDEN
Washington, D.C. Dulles Intl
Mon 4/27
5:55 pm-8:00 pm
Nonstop4h 05m
Denver Intl
Sat 5/2
5:45 am-3:05 pm
1 stop7h 20m
$267
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Pennsylvania to Colorado
Have a flexible travel schedule? Discover the best time to fly to Colorado from Pennsylvania with our price prediction graph.
DCA-DEN
LGA-DEN
JFK-DEN
JFK-COS
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 Pennsylvania to Colorado
USPA-USCO
DCA-DEN
LGA-DEN
JFK-DEN
JFK-COS
What is the cheapest month to book a flight from Pennsylvania to Colorado?
Currently, February is the cheapest month in which you can book a flight from Pennsylvania to Colorado (average of $85). Flying from Pennsylvania to Colorado in March is currently the most expensive (average of $154). 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 CO?
Find hourly flight availability from Pennsylvania to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 20, 2026.
It’s typically best to fly out from Pennsylvania to Colorado in the evening. Doing so could potentially save you 44% on the flight price compared to flying in the morning, which is usually more expensive.
What is the cheapest day to fly from Pennsylvania to Colorado?
Use this chart to determine the cheapest time to fly round-trip from Pennsylvania to Colorado. Price data was last updated on March 14, 2026.
Travelers seeking maximum savings on their Pennsylvania to Colorado flight should consider departing on Wednesday mornings when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Pennsylvania to Colorado
Explore weekly flight availability from Pennsylvania to Colorado. 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 March 20, 2026.
The most flights from USPA to USCO are scheduled on a Monday (12 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 on average).
Reviews of airlines servicing Colorado
Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated March 20, 2026.
Read through reviews of airlines operating flights from Pennsylvania to Colorado, such as Southwest,United Airlines, andAllegiant Air. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Pennsylvania to Colorado. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Return Flight Options
Top destinations
Alternative routes for Pennsylvania to Colorado
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Colorado by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Pennsylvania to Colorado by cabin class
Find flights from Pennsylvania to Colorado, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Pennsylvania and Colorado flights
Browse other Pennsylvania and Colorado flight options. Last updated on March 20, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Colorado
Find the right flight back to Pennsylvania after your stay in Colorado
Pennsylvania to Colorado flights
Consider these flights traveling from Pennsylvania to Colorado.
Top 7 airlines flying from Pennsylvania to Colorado
Discover the top 7 airlines that operate flights from Pennsylvania to Colorado. 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 March 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$72 | Average$236 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$106 | Average$195 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$128 | Average$375 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$130 | Average$325 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$177 | Average$463 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$184 | Average$437 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$187 | Average$436 | FlexibilityNo cancel fee | On-time63% |