$166+ Cheap flights from Denver to Portland, ME (DEN - PWM)
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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — PWM
Oct 23 — Oct 301
Round-trip
1 adult, Economy
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Find cheap flights from Denver to Portland 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 Denver Intl to Portland are usually found in January or November, booked 43 days in advance, depart on a Friday or Saturday and return on a Thursday
Cheap flight deals from Denver to Portland
Cheapest
Best
Last-minute
One-way
Cheapest flights from Denver to PortlandExplore the most affordable flight options available from Denver to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 23, 2026.
Explore the most affordable flight options available from Denver to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 23, 2026.
This Southwest deal was found by Cheapflights users on 9/22. 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 11/52:55 pm -
1 stop7h 00m
Sat 11/73:20 pm -
1 stop7h 50m
Deal found 9/22![Southwest logo]()
$388
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/241:35 pm -
1 stop7h 53m
Sat 10/313:23 pm -
Nonstop4h 51m
Deal found 9/21![United Airlines logo]()
$389
This Kiwi.com deal was found by Cheapflights users on 9/19. 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.
Tue 10/277:02 pm -
1 stop12h 06m
Mon 11/25:35 pm -
2 stops16h 49m
Deal found 9/19![Multiple Airlines logo]()
$390
This Kiwi.com deal was found by Cheapflights users on 9/19. 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.
Tue 10/277:02 pm -
1 stop12h 06m
Wed 10/285:09 pm -
2 stops17h 04m
Deal found 9/19![Multiple Airlines logo]()
$391
This Kiwi.com deal was found by Cheapflights users on 9/19. 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.
Fri 10/231:18 pm -
1 stop25h 06m
Sat 10/315:09 pm -
2 stops18h 04m
Deal found 9/19![Multiple Airlines logo]()
$392
This Kiwi.com deal was found by Cheapflights users on 9/22. 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.
Fri 12/410:45 am -
1 stop23h 03m
Mon 12/79:48 am -
1 stop13h 42m
Deal found 9/22![Multiple Airlines logo]()
$395
This Kiwi.com deal was found by Cheapflights users on 9/22. 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 10/710:40 am -
1 stop8h 44m
Wed 10/147:00 am -
1 stop12h 48m
Deal found 9/22![Multiple Airlines logo]()
$397
This Southwest deal was found by Cheapflights users on 9/21. 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.
Sat 10/1711:00 am -
2 stops9h 15m
Wed 10/2812:55 pm -
2 stops8h 25m
Deal found 9/21![Southwest logo]()
$398
This Delta deal was found by Cheapflights users on 9/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:20 am -
1 stop7h 42m
Sun 11/86:03 am -
1 stop7h 01m
Deal found 9/22![Delta logo]()
$399
This Kiwi.com deal was found by Cheapflights users on 9/19. 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.
Tue 10/277:02 pm -
1 stop12h 06m
Thu 10/293:10 pm -
2 stops19h 03m
Deal found 9/19![Multiple Airlines logo]()
$405
Best flights from Denver to PortlandDiscover carefully curated flight deals from Denver to Portland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 23, 2026.
Discover carefully curated flight deals from Denver to Portland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 23, 2026.
This Delta deal was found by Cheapflights users on 9/19. 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 12/17:15 am -
1 stop7h 24m
Thu 12/1012:49 pm -
1 stop6h 25m
Deal found 9/19![Delta logo]()
$399
This Southwest deal was found by Cheapflights users on 9/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/206:30 am -
2 stops8h 00m
Sun 11/225:10 pm -
2 stops8h 05m
Deal found 9/18![Southwest logo]()
$443
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Fri 10/3010:11 am -
Nonstop3h 51m
Wed 11/48:47 am -
1 stop8h 30m
Deal found 9/18![United Airlines logo]()
$505
This Delta deal was found by Cheapflights users on 9/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/197:05 am -
1 stop6h 11m
Thu 11/266:27 am -
2 stops11h 00m
Deal found 9/21![Delta logo]()
$468
This United Airlines deal was found by Cheapflights users on 9/21. 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.
Tue 11/102:16 pm -
1 stop7h 05m
Wed 11/118:47 am -
1 stop8h 30m
Deal found 9/21![United Airlines logo]()
$514
This Southwest deal was found by Cheapflights users on 9/21. 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 12/151:15 pm -
1 stop6h 30m
Mon 12/285:20 pm -
2 stops9h 40m
Deal found 9/21![Southwest logo]()
$517
This Delta deal was found by Cheapflights users on 9/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/76:20 am -
1 stop7h 42m
Sat 10/101:10 pm -
1 stop6h 22m
Deal found 9/21![Delta logo]()
$504
This United Airlines deal was found by Cheapflights users on 9/18. 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 11/2510:11 am -
Nonstop3h 51m
Wed 12/27:00 am -
1 stop8h 59m
Deal found 9/18![United Airlines logo]()
$544
This Southwest deal was found by Cheapflights users on 9/21. 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.
Sun 11/226:30 am -
2 stops8h 00m
Mon 11/305:20 pm -
2 stops9h 45m
Deal found 9/21![Southwest logo]()
$582
This United Airlines deal was found by Cheapflights users on 9/20. 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.
Mon 10/510:04 am -
Nonstop3h 58m
Tue 10/137:25 pm -
1 stop7h 05m
Deal found 9/20![United Airlines logo]()
$562
This Southwest deal was found by Cheapflights users on 9/19. 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.
Sun 10/185:00 am -
1 stop5h 30m
Sun 10/255:40 am -
2 stops9h 45m
Deal found 9/19![Southwest logo]()
$582
This United Airlines deal was found by Cheapflights users on 9/19. 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 10/2310:04 am -
Nonstop3h 58m
Sun 11/15:08 pm -
1 stop8h 23m
Deal found 9/19![United Airlines logo]()
$579
Last-minute flights from Denver to PortlandDiscover last-minute flight deals from Denver to Portland. Data last updated September 23, 2026 and is based on user searches.
Discover last-minute flight deals from Denver to Portland. Data last updated September 23, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/22. 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 10/710:40 am -
1 stop8h 44m
Wed 10/147:00 am -
1 stop12h 48m
Deal found 9/22![Multiple Airlines logo]()
$397
This Southwest deal was found by Cheapflights users on 9/21. 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.
Sat 10/1711:00 am -
2 stops9h 15m
Wed 10/2812:55 pm -
2 stops8h 25m
Deal found 9/21![Southwest logo]()
$398
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/1710:04 am -
Nonstop3h 58m
Wed 10/283:23 pm -
Nonstop4h 51m
Deal found 9/21![United Airlines logo]()
$412
This United Airlines deal was found by Cheapflights users on 9/22. 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 10/2010:04 am -
Nonstop3h 58m
Tue 10/278:32 am -
1 stop8h 45m
Deal found 9/22![United Airlines logo]()
$406
This Delta deal was found by Cheapflights users on 9/19. 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.
Wed 10/216:35 am -
1 stop7h 00m
Wed 10/2811:20 am -
1 stop7h 03m
Deal found 9/19![Delta logo]()
$399
This Kiwi.com deal was found by Cheapflights users on 9/19. 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.
Fri 10/231:18 pm -
1 stop25h 06m
Sat 10/315:09 pm -
2 stops18h 04m
Deal found 9/19![Multiple Airlines logo]()
$392
This Delta deal was found by Cheapflights users on 9/19. 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 10/2312:59 am -
2 stops10h 52m
Thu 10/292:09 pm -
1 stop8h 02m
Deal found 9/19![Delta logo]()
$404
This Delta deal was found by Cheapflights users on 9/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2312:59 pm -
2 stops8h 19m
Tue 10/271:52 pm -
2 stops9h 35m
Deal found 9/22![Delta logo]()
$409
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/241:35 pm -
1 stop7h 53m
Sat 10/313:23 pm -
Nonstop4h 51m
Deal found 9/21![United Airlines logo]()
$389
This Kiwi.com deal was found by Cheapflights users on 9/19. 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.
Tue 10/277:02 pm -
1 stop12h 06m
Mon 11/25:35 pm -
2 stops16h 49m
Deal found 9/19![Multiple Airlines logo]()
$390
This Kiwi.com deal was found by Cheapflights users on 9/19. 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.
Tue 10/277:02 pm -
1 stop12h 06m
Wed 10/285:09 pm -
2 stops17h 04m
Deal found 9/19![Multiple Airlines logo]()
$391
This Kiwi.com deal was found by Cheapflights users on 9/19. 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.
Tue 10/277:02 pm -
1 stop12h 06m
Thu 10/293:10 pm -
2 stops19h 03m
Deal found 9/19![Multiple Airlines logo]()
$405
One-way flights from Denver to PortlandSearch for one-way flight options from Denver to Portland. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
Search for one-way flight options from Denver to Portland. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/19. 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.
Mon 11/21:18 pm -
1 stop25h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Multiple Airlines logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:02 pm -
1 stop12h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/191:18 pm -
1 stop25h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 9/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:56 pm -
1 stop20h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Multiple Airlines logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/211:59 pm -
1 stop31h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$185
This Southwest deal was found by Cheapflights users on 9/22. 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.
Sat 10/175:30 am -
1 stop8h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Southwest logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 9/23. 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.
Wed 10/710:40 am -
1 stop8h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Multiple Airlines logo]()
$190
Find flight deals from Denver to Portland
Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Portland (PWM). 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 September 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $388 (Southwest) |
One-way from | $166 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $515 |
Good round-trip deal | $496 or less |
Good one-way deal | $331 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Denver to Portland 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 September 23, 2026.
Use the filters below to find and compare flights from Denver to Portland that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DenverPortland
DEN Denver Intl - PWM Portland
DENPWM
Denver Intl
Sat 10/17
5:30 am-3:55 pm
1 stop8h 25m
Portland
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$189
DenverPortland
DEN Denver Intl - PWM Portland
DENPWM
Denver Intl
Fri 10/30
2:35 pm-9:55 pm
1 stop5h 20m
Portland
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$189
DenverPortland
DEN Denver Intl - PWM Portland
DENPWM
Denver Intl
Mon 10/19
8:55 pm-10:55 am
1 stop12h 00m
Portland
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$194
DenverPortland
DEN Denver Intl - PWM Portland
DENPWM
Denver Intl
Sat 10/31
2:16 pm-11:21 pm
1 stop7h 05m
Portland
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$200
Quickest round-trip
DenverPortland
DEN Denver Intl - PWM Portland
DENPWM
Denver Intl
Sat 10/17
10:04 am-4:02 pm
Nonstop3h 58m
Portland
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$224
DenverPortland
DEN Denver Intl - PWM Portland
DENPWM
Denver Intl
Sun 10/4
12:30 am-9:50 am
1 stop7h 20m
Portland
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$235
DenverPortland
DEN Denver Intl - PWM Portland
DENPWM
Denver Intl
Sun 10/18
10:04 am-4:02 pm
Nonstop3h 58m
Portland
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$250
DenverPortland
DEN Denver Intl - PWM Portland
DENPWM
Denver Intl
Tue 12/1
7:15 am-4:39 pm
1 stop7h 24m
Portland
Thu 12/10
12:49 pm-5:14 pm
1 stop6h 25m
$399
DenverPortland
DEN Denver Intl - PWM Portland
DENPWM
Denver Intl
Fri 11/20
6:30 am-4:30 pm
2 stops8h 00m
Portland
Sun 11/22
5:10 pm-11:15 pm
2 stops8h 05m
$443
DenverPortland
DEN Denver Intl - PWM Portland
DENPWM
Denver Intl
Thu 11/19
7:05 am-3:16 pm
1 stop6h 11m
Portland
Thu 11/26
6:27 am-3:27 pm
2 stops11h 00m
$468
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from Denver to Portland
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 Denver to Portland in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Denver-Portland, Maine flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Portland, Maine flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Portland, Maine flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Denver-Portland, Maine 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 Denver-Portland, Maine 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 Denver to Portland
Have a flexible travel schedule? Discover the best time to fly to Portland from Denver with our price prediction graph.
DEN-PWM
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 Denver to Portland
How far ahead should I book a flight from Denver to Portland, Maine?
Booking 42 days in advance of your planned departure date is, on average, the best time to get cheap flights from Denver to Portland, Maine. 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 Denver to Portland, Maine?
Currently, January is the cheapest month in which you can book a flight from Denver to Portland, Maine (average of $363). Flying from Denver to Portland, Maine in June is currently the most expensive (average of $604). 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 DEN to PWM?
Find hourly flight availability from Denver to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 23, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Denver to Portland, Maine as you normally would.
Reviews of airlines servicing Portland
Get insights into the airlines that provide service to Portland. 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 Portland. Reviews last updated September 23, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited Airlines from Denver to Portland to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Related info for your journey
Find useful and relevant information for your journey from Denver to Portland. 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 Portland?
Book flights to Portland if you plan to visit one of these locationsNorth Conway
Lewiston
Brunswick
Conway
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Denver and Portland flights
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Top 5 airlines flying from Denver to Portland
Discover the top 5 airlines that operate flights from Denver to Portland. 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 September 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$266 | Average$435 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$267 | Average$408 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$290 | Average$564 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$318 | Average$462 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$348 | Average$506 | FlexibilityNo cancel fee | On-time63% |