$115+ Cheap flights from Portland, ME to Denver (PWM - 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — DEN
May 23 — May 301
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 October, booked 89 days in advance, depart on a Friday or Wednesday and return on a Tuesday
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 April 23, 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 April 23, 2026.
This Southwest deal was found by Cheapflights users on 4/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/45:20 pm
PWM
- DEN
1 stop6h 40m
Southwest
Tue 6/911:50 pm
DEN
- PWM
1 stop8h 05m
Southwest
Deal found 4/20![Southwest logo]()
$312
This Southwest deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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 8/255:45 am
PWM
- DEN
1 stop7h 40m
Southwest
Tue 8/251:40 pm
DEN
- PWM
1 stop6h 25m
Southwest
Deal found 4/21![Southwest logo]()
$314
This Southwest deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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 8/125:45 am
PWM
- DEN
2 stops11h 05m
Southwest
Mon 8/175:15 am
DEN
- PWM
1 stop7h 45m
Southwest
Deal found 4/22![Southwest logo]()
$317
This Southwest deal was found by Cheapflights users on 4/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/195:45 am
PWM
- DEN
2 stops11h 05m
Southwest
Sun 8/235:30 am
DEN
- PWM
1 stop8h 10m
Southwest
Deal found 4/20![Southwest logo]()
$320
This American Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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.
Tue 5/267:19 pm
PWM
- DEN
1 stop15h 05m
American Airlines
Tue 6/26:55 am
DEN
- PWM
1 stop15h 40m
American Airlines
Deal found 4/22![American Airlines logo]()
$321
This Southwest deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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 6/93:45 pm
PWM
- DEN
1 stop6h 55m
Southwest
Fri 6/121:20 pm
DEN
- PWM
2 stops8h 45m
Southwest
Deal found 4/22![Southwest logo]()
$329
This Southwest deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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 5/196:10 am
PWM
- DEN
2 stops9h 25m
Southwest
Thu 5/285:20 am
DEN
- PWM
2 stops8h 55m
Southwest
Deal found 4/22![Southwest logo]()
$334
This American Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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 5/285:57 pm
PWM
- DEN
1 stop6h 59m
American Airlines
Tue 6/29:06 am
DEN
- PWM
1 stop13h 29m
American Airlines
Deal found 4/22![American Airlines logo]()
$335
This United Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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 9/183:31 pm
PWM
- DEN
Nonstop4h 37m
United Airlines
Sat 9/2611:59 pm
DEN
- PWM
1 stop7h 24m
United Airlines
Deal found 4/21![United Airlines logo]()
$339
This Southwest deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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 5/282:50 pm
PWM
- DEN
1 stop8h 40m
Southwest
Tue 6/211:00 am
DEN
- PWM
2 stops9h 35m
Southwest
Deal found 4/22![Southwest logo]()
$342
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 April 23, 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 April 23, 2026.
This United Airlines deal was found by Cheapflights users on 4/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/16:25 pm
PWM
- DEN
1 stop7h 24m
United Airlines
Tue 7/711:59 pm
DEN
- PWM
1 stop7h 12m
United Airlines
Deal found 4/18![United Airlines logo]()
$349
This Southwest deal was found by Cheapflights users on 4/19. 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 8/275:55 am
PWM
- DEN
2 stops7h 30m
Southwest
Sun 8/3011:55 pm
DEN
- PWM
2 stops10h 30m
Southwest
Deal found 4/19![Southwest logo]()
$384
This United Airlines deal was found by Cheapflights users on 4/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:20 pm
PWM
- DEN
1 stop6h 58m
United Airlines
Wed 9/306:00 am
DEN
- PWM
1 stop5h 54m
United Airlines
Deal found 4/20![United Airlines logo]()
$349
This Southwest deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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 5/74:50 pm
PWM
- DEN
1 stop6h 40m
Southwest
Wed 5/1310:55 am
DEN
- PWM
2 stops9h 40m
Southwest
Deal found 4/22![Southwest logo]()
$414
This Southwest deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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 5/215:30 am
PWM
- DEN
2 stops10h 35m
Southwest
Thu 5/285:45 am
DEN
- PWM
1 stop6h 25m
Southwest
Deal found 4/22![Southwest logo]()
$419
This United Airlines deal was found by Cheapflights users on 4/19. 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.
Fri 5/295:15 am
PWM
- DEN
2 stops9h 11m
United Airlines
Tue 6/23:50 pm
DEN
- PWM
1 stop6h 01m
United Airlines
Deal found 4/19![United Airlines logo]()
$454
This United Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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 7/187:16 pm
PWM
- DEN
1 stop7h 14m
United Airlines
Sat 8/13:50 pm
DEN
- PWM
1 stop6h 01m
United Airlines
Deal found 4/21![United Airlines logo]()
$461
This Southwest deal was found by Cheapflights users on 4/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:45 am
PWM
- DEN
2 stops11h 05m
Southwest
Mon 9/712:10 pm
DEN
- PWM
2 stops8h 15m
Southwest
Deal found 4/20![Southwest logo]()
$470
This United Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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 5/193:23 pm
PWM
- DEN
Nonstop4h 39m
United Airlines
Sun 5/246:00 am
DEN
- PWM
1 stop6h 26m
United Airlines
Deal found 4/22![United Airlines logo]()
$474
This Southwest deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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 5/215:30 am
PWM
- DEN
2 stops10h 35m
Southwest
Mon 5/255:45 am
DEN
- PWM
1 stop8h 30m
Southwest
Deal found 4/22![Southwest logo]()
$483
This United Airlines deal was found by Cheapflights users on 4/19. 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.
Wed 7/13:31 pm
PWM
- DEN
Nonstop4h 39m
United Airlines
Mon 7/611:59 pm
DEN
- PWM
1 stop7h 12m
United Airlines
Deal found 4/19![United Airlines logo]()
$474
This United Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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 5/193:23 pm
PWM
- DEN
Nonstop4h 39m
United Airlines
Sat 5/2311:59 pm
DEN
- PWM
1 stop8h 08m
United Airlines
Deal found 4/22![United Airlines logo]()
$474
Last-minute flights from Portland to DenverDiscover last-minute flight deals from Portland to Denver. Data last updated April 23, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Denver. Data last updated April 23, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/65:01 pm
PWM
- DEN
2 stops31h 38m
Multiple Airlines
Sat 5/97:00 am
DEN
- PWM
1 stop7h 16m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$354
This United Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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 5/163:23 pm
PWM
- DEN
Nonstop4h 39m
United Airlines
Mon 5/1811:59 pm
DEN
- PWM
1 stop6h 50m
United Airlines
Deal found 4/21![United Airlines logo]()
$357
This Southwest deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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 5/196:10 am
PWM
- DEN
2 stops9h 25m
Southwest
Thu 5/285:20 am
DEN
- PWM
2 stops8h 55m
Southwest
Deal found 4/22![Southwest logo]()
$334
This Delta deal was found by Cheapflights users on 4/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1912:50 pm
PWM
- DEN
1 stop6h 24m
Delta
Sat 5/231:15 pm
DEN
- PWM
1 stop9h 28m
Delta
Deal found 4/20![Delta logo]()
$349
This American Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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 5/206:01 pm
PWM
- DEN
1 stop8h 05m
American Airlines
Wed 5/276:55 am
DEN
- PWM
1 stop15h 40m
American Airlines
Deal found 4/21![American Airlines logo]()
$355
This American Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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.
Tue 5/267:19 pm
PWM
- DEN
1 stop15h 05m
American Airlines
Tue 6/26:55 am
DEN
- PWM
1 stop15h 40m
American Airlines
Deal found 4/22![American Airlines logo]()
$321
This American Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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 5/285:57 pm
PWM
- DEN
1 stop6h 59m
American Airlines
Tue 6/29:06 am
DEN
- PWM
1 stop13h 29m
American Airlines
Deal found 4/22![American Airlines logo]()
$335
This United Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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 5/283:31 pm
PWM
- DEN
Nonstop4h 39m
United Airlines
Tue 6/211:59 pm
DEN
- PWM
1 stop7h 12m
United Airlines
Deal found 4/22![United Airlines logo]()
$339
This Southwest deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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 5/282:50 pm
PWM
- DEN
1 stop8h 40m
Southwest
Tue 6/211:00 am
DEN
- PWM
2 stops9h 35m
Southwest
Deal found 4/22![Southwest logo]()
$342
This United Airlines deal was found by Cheapflights users on 4/19. 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.
Thu 5/283:31 pm
PWM
- DEN
Nonstop4h 39m
United Airlines
Mon 6/111:59 pm
DEN
- PWM
1 stop8h 05m
United Airlines
Deal found 4/19![United Airlines logo]()
$356
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 April 23, 2026.
Search for one-way flight options from Portland to Denver. Find affordable one-way fares based on user searches. Data last updated April 23, 2026.
This Southwest deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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 8/256:15 pm
PWM
- DEN
1 stop6h 15m
Southwest
Deal found 4/21![Southwest logo]()
$115
This Kiwi.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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 5/247:56 pm
PWM
- DEN
2 stops39h 09m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 5/165:01 pm
PWM
- DEN
2 stops17h 23m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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 6/35:01 pm
PWM
- DEN
1 stop23h 31m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/135:01 pm
PWM
- DEN
2 stops31h 38m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$174
This Southwest deal was found by Cheapflights users on 4/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/152:50 pm
PWM
- DEN
1 stop8h 40m
Southwest
Deal found 4/20![Southwest logo]()
$175
This Southwest deal was found by Cheapflights users on 4/19. 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.
Wed 5/131:00 pm
PWM
- DEN
1 stop10h 30m
Southwest
Deal found 4/19![Southwest logo]()
$180
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 April 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $312 (Southwest) |
One-way from | $115 (Southwest) |
Popular in | June |
Cheapest in | February |
Average price | $425 |
Good round-trip deal | $440 or less |
Good one-way deal | $263 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 2,558,603 searches. Data last updated April 23, 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 - DEN
PWMDEN
Portland
Wed 7/1
6:25 pm-11:49 pm
1 stop7h 24m
Denver Intl
Tue 7/7
11:59 pm-9:11 am
1 stop7h 12m
$349
PortlandDenver
PWM - DEN
PWMDEN
Portland
Sat 9/26
6:20 pm-11:18 pm
1 stop6h 58m
Denver Intl
Wed 9/30
6:00 am-1:54 pm
1 stop5h 54m
$349
PortlandDenver
PWM - DEN
PWMDEN
Portland
Thu 8/27
5:55 am-11:25 am
2 stops7h 30m
Denver Intl
Sun 8/30
11:55 pm-12:25 pm
2 stops10h 30m
$384
PortlandDenver
PWM - DEN
PWMDEN
Portland
Thu 5/7
4:50 pm-9:30 pm
1 stop6h 40m
Denver Intl
Wed 5/13
10:55 am-10:35 pm
2 stops9h 40m
$414
PortlandDenver
PWM - DEN
PWMDEN
Portland
Thu 5/21
5:30 am-2:05 pm
2 stops10h 35m
Denver Intl
Thu 5/28
5:45 am-2:10 pm
1 stop6h 25m
$419
PortlandDenver
PWM - DEN
PWMDEN
Portland
Fri 5/29
5:15 am-12:26 pm
2 stops9h 11m
Denver Intl
Tue 6/2
3:50 pm-11:51 pm
1 stop6h 01m
$454
PortlandDenver
PWM - DEN
PWMDEN
Portland
Sat 7/18
7:16 pm-12:30 am
1 stop7h 14m
Denver Intl
Sat 8/1
3:50 pm-11:51 pm
1 stop6h 01m
$461
PortlandDenver
PWM - DEN
PWMDEN
Portland
Tue 9/1
5:45 am-2:50 pm
2 stops11h 05m
Denver Intl
Mon 9/7
12:10 pm-10:25 pm
2 stops8h 15m
$470
Quickest round-trip
PortlandDenver
PWM - DEN
PWMDEN
Portland
Tue 5/19
3:23 pm-6:02 pm
Nonstop4h 39m
Denver Intl
Sun 5/24
6:00 am-2:26 pm
1 stop6h 26m
$474
PortlandDenver
PWM - DEN
PWMDEN
Portland
Wed 7/1
3:31 pm-6:10 pm
Nonstop4h 39m
Denver Intl
Mon 7/6
11:59 pm-9:11 am
1 stop7h 12m
$474
Showing 1-10 of 22 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 April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- 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?
Use this chart to determine the optimal time to book a round-trip flight from Portland to Denver. Price data was last updated on April 17, 2026.
Booking 88 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 $374). Flying from Portland, Maine to Denver in June is currently the most expensive (average of $544). 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.
How much does it cost to fly round-trip from Portland, Maine to Denver?
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 April 23, 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
Food
7.0
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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
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
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Complete your trip
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Other flights to Denver
Explore flights to Denver departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 23, 2026.
Search flights from Portland to Denver by cabin class
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Portland and Denver flights
Browse other Portland and Denver flight options. Last updated on April 23, 2026.
Other flights from Portland
Browse through other flights departing from Portland. Flights are based on user searches made on Cheapflights and were last updated on April 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Portland to Denver
Discover the top 4 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 2,558,603 searches. Data last updated April 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$256 | Average$363 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$268 | Average$379 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$288 | Average$458 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$293 | Average$508 | FlexibilityNo cancel fee | On-time69% |