$147+ Cheap flights from Portland, ME to Denver (PWM - 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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — DEN
Nov 29 — Dec 61
Round-trip
1 adult, Economy
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Find cheap flights from Portland 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 Portland to Denver Intl are usually found in February or April, booked 66 days in advance, depart on a Thursday or Saturday and return on a Saturday
Cheap flight deals from Portland to Denver
Cheapest
Best
Last-minute
One-way
Cheapest flights from Portland to DenverExplore the most affordable flight options available from Portland to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.
Explore the most affordable flight options available from Portland to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.
This Southwest deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 11/255:20 pm -
1 stop8h 35m
Thu 12/37:00 am -
1 stop5h 45m
Deal found 10/29![Southwest logo]()
$382
This Southwest deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 12/175:10 pm -
1 stop8h 45m
Thu 12/247:25 pm -
1 stop12h 25m
Deal found 10/28![Southwest logo]()
$387
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 11/205:50 am -
1 stop9h 59m
Wed 11/2510:11 am -
Nonstop3h 51m
Deal found 10/29![United Airlines logo]()
$388
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates ” 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 11/253:23 pm -
Nonstop4h 51m
Fri 12/411:59 pm -
1 stop7h 06m
Deal found 10/28![United Airlines logo]()
$392
This Southwest deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 12/115:20 am -
2 stops9h 55m
Tue 12/1510:55 am -
2 stops8h 55m
Deal found 10/26![Southwest logo]()
$395
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/233:23 pm -
Nonstop4h 51m
Fri 11/2710:11 am -
Nonstop3h 51m
Deal found 10/28![United Airlines logo]()
$399
This Southwest deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 12/55:25 am -
2 stops12h 20m
Sat 12/1211:10 am -
2 stops8h 40m
Deal found 10/30![Southwest logo]()
$402
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/165:35 pm -
2 stops16h 49m
Mon 11/2311:59 pm -
1 stop31h 09m
Deal found 10/27![Multiple Airlines logo]()
$403
This Southwest deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 11/255:20 pm -
2 stops9h 45m
Fri 12/47:00 am -
1 stop5h 45m
Deal found 10/28![Southwest logo]()
$407
This Southwest deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 12/1010:25 am -
2 stops10h 55m
Mon 12/1410:55 am -
2 stops8h 55m
Deal found 10/27![Southwest logo]()
$412
This Southwest deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 12/143:25 pm -
1 stop8h 25m
Fri 12/182:00 pm -
1 stop7h 55m
Deal found 10/25![Southwest logo]()
$416
This American Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 11/116:00 am -
1 stop10h 06m
Tue 11/172:57 pm -
1 stop6h 00m
Deal found 10/27![American Airlines logo]()
$417
Best flights from Portland to DenverDiscover carefully curated flight deals from Portland to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
Discover carefully curated flight deals from Portland to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
This Southwest deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 1/1312:55 pm -
1 stop8h 30m
Sun 1/177:20 am -
1 stop5h 30m
Deal found 10/30![Southwest logo]()
$398
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 3/184:50 pm -
1 stop6h 50m
Tue 3/237:00 am -
1 stop7h 59m
Deal found 10/26![Delta logo]()
$419
This American Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 1/297:00 am -
1 stop9h 50m
Sun 1/319:23 am -
2 stops10h 21m
Deal found 10/30![American Airlines logo]()
$433
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 2/2011:25 am -
1 stop7h 01m
Sat 2/2712:20 pm -
1 stop9h 29m
Deal found 10/28![Delta logo]()
$419
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 12/2012:59 pm -
1 stop6h 38m
Mon 12/286:35 am -
1 stop7h 23m
Deal found 10/27![Delta logo]()
$419
This Southwest deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 11/155:20 am -
2 stops10h 15m
Sat 11/218:05 pm -
1 stop12h 25m
Deal found 10/28![Southwest logo]()
$468
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 1/2811:38 am -
2 stops12h 36m
Sun 1/317:00 am -
1 stop7h 26m
Deal found 10/28![Delta logo]()
$424
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 1/2811:38 am -
2 stops13h 39m
Sat 1/307:05 am -
2 stops12h 05m
Deal found 10/27![Delta logo]()
$429
This Delta deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 11/204:03 pm -
2 stops9h 31m
Mon 11/302:24 pm -
1 stop7h 07m
Deal found 10/30![Delta logo]()
$454
Last-minute flights from Portland to DenverDiscover last-minute flight deals from Portland to Denver. Data last updated October 30, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Denver. Data last updated October 30, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 11/116:00 am -
1 stop10h 06m
Tue 11/172:57 pm -
1 stop6h 00m
Deal found 10/27![American Airlines logo]()
$417
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/165:35 pm -
2 stops16h 49m
Mon 11/2311:59 pm -
1 stop31h 09m
Deal found 10/27![Multiple Airlines logo]()
$403
This Kiwi.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/169:48 am -
1 stop24h 25m
Sun 11/2210:38 am -
1 stop25h 19m
Deal found 10/28![Multiple Airlines logo]()
$421
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 11/186:31 pm -
1 stop15h 53m
Sat 11/216:21 pm -
2 stops36h 47m
Deal found 10/29![Multiple Airlines logo]()
$425
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 11/205:50 am -
1 stop9h 59m
Wed 11/2510:11 am -
Nonstop3h 51m
Deal found 10/29![United Airlines logo]()
$388
This American Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 11/205:45 am -
1 stop9h 46m
Mon 11/3011:59 pm -
1 stop8h 39m
Deal found 10/30![American Airlines logo]()
$419
This Delta deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 11/204:03 pm -
2 stops9h 31m
Wed 11/252:24 pm -
1 stop7h 07m
Deal found 10/29![Delta logo]()
$424
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/233:23 pm -
Nonstop4h 51m
Fri 11/2710:11 am -
Nonstop3h 51m
Deal found 10/28![United Airlines logo]()
$399
This Southwest deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 11/255:20 pm -
1 stop8h 35m
Thu 12/37:00 am -
1 stop5h 45m
Deal found 10/29![Southwest logo]()
$382
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 11/253:23 pm -
Nonstop4h 51m
Fri 12/411:59 pm -
1 stop7h 06m
Deal found 10/28![United Airlines logo]()
$392
This Southwest deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 11/255:20 pm -
2 stops9h 45m
Fri 12/47:00 am -
1 stop5h 45m
Deal found 10/28![Southwest logo]()
$407
One-way flights from Portland to DenverSearch for one-way flight options from Portland to Denver. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
Search for one-way flight options from Portland to Denver. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 1/206:31 pm -
2 stops47h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Multiple Airlines logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 12/212:28 pm -
1 stop8h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Multiple Airlines logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 1/1312:28 pm -
1 stop8h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Multiple Airlines logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 2/36:31 pm -
2 stops43h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Multiple Airlines logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 12/15:09 pm -
1 stop28h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Multiple Airlines logo]()
$161
This American Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 11/196:00 am -
1 stop7h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![American Airlines logo]()
$163
This American Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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.
Mon 11/235:45 am -
2 stops11h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![American Airlines logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 2/2412:28 pm -
1 stop8h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Multiple Airlines logo]()
$170
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 11/215:08 pm -
1 stop8h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![United Airlines logo]()
$173
This Southwest deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 11/215:25 pm -
2 stops9h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Southwest logo]()
$178
Find flight deals from Portland to Denver
Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) 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 October 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $382 (American Airlines) |
One-way from | $147 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $504 |
Good round-trip deal | $444 or less |
Good one-way deal | $303 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Portland 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 October 30, 2026.
Use the filters below to find and compare flights from Portland to Denver that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandDenver
PWM Portland - DEN Denver Intl
PWMDEN
Portland
Wed 1/13
9:48 am-9:25 pm
2 stops13h 37m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$163
Quickest round-trip
PortlandDenver
PWM Portland - DEN Denver Intl
PWMDEN
Portland
Sat 11/21
5:08 pm-9:49 pm
1 stop6h 41m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$173
PortlandDenver
PWM Portland - DEN Denver Intl
PWMDEN
Portland
Sat 11/21
5:25 pm-12:50 am
2 stops9h 25m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$178
PortlandDenver
PWM Portland - DEN Denver Intl
PWMDEN
Portland
Thu 1/28
6:00 am-2:14 pm
1 stop10h 14m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$189
PortlandDenver
PWM Portland - DEN Denver Intl
PWMDEN
Portland
Fri 12/4
12:45 pm-7:25 pm
1 stop8h 40m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$193
PortlandDenver
PWM Portland - DEN Denver Intl
PWMDEN
Portland
Thu 1/28
12:55 pm-9:30 pm
2 stops10h 35m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$194
PortlandDenver
PWM Portland - DEN Denver Intl
PWMDEN
Portland
Wed 2/24
5:30 am-1:20 pm
2 stops9h 50m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$194
PortlandDenver
PWM Portland - DEN Denver Intl
PWMDEN
Portland
Sat 12/19
5:25 pm-12:50 am
2 stops9h 25m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$215
PortlandDenver
PWM Portland - DEN Denver Intl
PWMDEN
Portland
Sat 11/21
5:09 pm-5:01 pm
2 stops25h 52m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$229
PortlandDenver
PWM Portland - DEN Denver Intl
PWMDEN
Portland
Fri 12/4
3:20 pm-9:35 pm
1 stop8h 15m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$249
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from Portland 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 Portland to Denver in October.
| 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 Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Portland, Maine-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-Denver flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Portland, Maine-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 Portland, Maine-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 Portland to Denver
Have a flexible travel schedule? Discover the best time to fly to Denver from Portland with our price prediction graph.
PWM-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 Portland to Denver
How far ahead should I book a flight from Portland, Maine to Denver?
Booking 65 days in advance of your planned departure date is, on average, the best time to get cheap flights from Portland, Maine 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 Portland, Maine to Denver?
Currently, February is the cheapest month in which you can book a flight from Portland, Maine to Denver (average of $389). Flying from Portland, Maine to Denver in June is currently the most expensive (average of $599). 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 PWM to DEN?
Find hourly flight availability from Portland 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 October 30, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portland, Maine to Denver as you normally would.
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 October 30, 2026.
Read through reviews of airlines operating flights from Portland to Denver, such as Southwest,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Overall
7.9
Entertainment
7.4
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Overall
7.9
Entertainment
7.4
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Overall
7.9
Entertainment
7.4
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Overall
7.9
Entertainment
7.4
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Overall
7.9
Entertainment
7.4
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Overall
7.9
Entertainment
7.4
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Portland 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
Wheat Ridge
Silverthorne
Fort Morgan
Limon
Greeley
Frisco
Winter Park
Black Hawk
Central City
Manitou Springs
Glendale
Cripple Creek
Evergreen
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Top 5 airlines flying from Portland to Denver
Discover the top 5 airlines that operate flights from Portland 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 October 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$164 | Average$452 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$269 | Average$447 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$306 | Average$428 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$308 | Average$499 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$339 | Average$509 | FlexibilityNo cancel fee | On-time69% |