$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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — DEN
Jan 3 — Jan 101
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 January or October, booked 72 days in advance, depart on a Friday or Tuesday and return on a Tuesday
Cheap flight deals from Portland to Denver
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 December 4, 2025.
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 December 4, 2025.
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/317:30 pmPWM - DEN
1 stop6h 45mUnited Airlines
Wed 1/76:00 amDEN - PWM
1 stop6h 39mUnited Airlines
Deal found 12/3![United Airlines logo]()
$310
This American Airlines deal was found by Cheapflights users on 12/4. 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 12/196:41 pmPWM - DEN
1 stop6h 45mAmerican Airlines
Sun 1/186:00 amDEN - PWM
1 stop7h 31mAmerican Airlines
Deal found 12/4![American Airlines logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 12/2. 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 12/159:46 amPWM - DEN
1 stop15h 18mMultiple Airlines
Wed 12/179:44 pmDEN - PWM
2 stops33h 22mMultiple Airlines
Deal found 12/2![Multiple Airlines logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 12/3. 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 12/1211:21 amPWM - DEN
1 stop11h 19mMultiple Airlines
Wed 12/179:44 pmDEN - PWM
2 stops33h 22mMultiple Airlines
Deal found 12/3![Multiple Airlines logo]()
$338
This Southwest deal was found by Cheapflights users on 12/3. 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 12/215:30 pmPWM - DEN
2 stops9h 15mSouthwest
Wed 1/76:20 amDEN - PWM
1 stop6h 35mSouthwest
Deal found 12/3![Southwest logo]()
$341
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/257:30 pmPWM - DEN
1 stop6h 45mUnited Airlines
Mon 12/2911:59 pmDEN - PWM
1 stop7h 45mUnited Airlines
Deal found 12/3![United Airlines logo]()
$346
This American Airlines deal was found by Cheapflights users on 12/2. 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 12/167:00 amPWM - DEN
2 stops11h 08mAmerican Airlines
Thu 12/1811:55 amDEN - PWM
1 stop9h 00mAmerican Airlines
Deal found 12/2![American Airlines logo]()
$354
This Southwest deal was found by Cheapflights users on 12/3. 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 12/235:30 pmPWM - DEN
1 stop8h 10mSouthwest
Wed 1/76:20 amDEN - PWM
1 stop6h 35mSouthwest
Deal found 12/3![Southwest logo]()
$356
This Southwest deal was found by Cheapflights users on 12/2. 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 12/1612:45 pmPWM - DEN
1 stop7h 15mSouthwest
Thu 12/1811:55 pmDEN - PWM
1 stop9h 15mSouthwest
Deal found 12/2![Southwest logo]()
$364
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 December 4, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $175 (American Airlines) |
One-way from | $115 (Southwest) |
Popular in | July |
Cheapest in | January |
Average price | $487 |
Good round-trip deal | $419 or less |
Good one-way deal | $200 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 December 4, 2025.
Use the filters below to find and compare flights from Portland to Denver that are best for you.
Fly from
Portland
Fly to
Denver
Route
Depart
Return
Price
PortlandDenver
PWM - DEN
PWMDEN
Portland
Sun 2/1
12:40 pm-9:11 pm
1 stop10h 31m
Denver Intl
Wed 2/4
11:29 am-10:07 pm
1 stop8h 38m
$258
PortlandDenver
PWM - DEN
PWMDEN
Portland
Mon 2/23
3:55 pm-10:40 pm
1 stop8h 45m
Denver Intl
Fri 2/27
6:05 am-1:45 pm
1 stop5h 40m
$268
PortlandDenver
PWM - DEN
PWMDEN
Portland
Thu 1/15
12:20 pm-5:26 pm
1 stop7h 06m
Denver Intl
Thu 1/22
12:00 pm-10:27 pm
1 stop8h 27m
$289
PortlandDenver
PWM - DEN
PWMDEN
Portland
Mon 1/12
5:30 am-1:37 pm
1 stop10h 07m
Denver Intl
Sat 1/17
1:31 pm-10:27 pm
1 stop6h 56m
$289
PortlandDenver
PWM - DEN
PWMDEN
Portland
Sat 4/25
12:50 pm-5:31 pm
1 stop6h 41m
Denver Intl
Wed 4/29
12:20 pm-11:59 pm
1 stop9h 39m
$289
PortlandDenver
PWM - DEN
PWMDEN
Portland
Tue 4/21
4:50 pm-9:38 pm
1 stop6h 48m
Denver Intl
Tue 4/28
6:45 am-4:15 pm
1 stop7h 30m
$289
PortlandDenver
PWM - DEN
PWMDEN
Portland
Wed 4/22
6:00 am-11:52 am
1 stop7h 52m
Denver Intl
Wed 4/29
12:20 pm-11:59 pm
1 stop9h 39m
$289
PortlandDenver
PWM - DEN
PWMDEN
Portland
Thu 2/26
2:25 pm-9:50 pm
1 stop9h 25m
Denver Intl
Sun 3/1
6:05 am-4:15 pm
1 stop8h 10m
$298
PortlandDenver
PWM - DEN
PWMDEN
Portland
Thu 4/2
2:30 pm-10:39 pm
1 stop10h 09m
Denver Intl
Tue 4/7
1:15 pm-11:24 pm
1 stop8h 09m
$314
PortlandDenver
PWM - DEN
PWMDEN
Portland
Fri 2/20
2:25 pm-8:00 pm
1 stop7h 35m
Denver Intl
Mon 2/23
11:55 pm-12:10 pm
2 stops10h 15m
$328
Showing 1-10 of 21 results
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 December.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Portland, Maine-Denver flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Portland, Maine-Denver flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.
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 November 28, 2025.
Booking 72 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, November is the cheapest month in which you can book a flight from Portland, Maine to Denver (average of $87). Flying from Portland, Maine to Denver in August is currently the most expensive (average of $169). 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 December 4, 2025.
Unlike in the morning, when flights are generally more expensive, you can save up to 52% on flights from Portland, Maine to Denver by exploring options for tickets in the evening.
What is the cheapest day to fly from Portland, Maine to Denver?
Use this chart to determine the cheapest time to fly round-trip from Portland to Denver. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their Portland, Maine to Denver flight should consider departing on Saturday evenings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
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 December 4, 2025.
Read through reviews of airlines operating flights from Portland to Denver, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Overall
8.0
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 locationsBlack Hawk
Westminster
Broomfield
Lakewood
Golden
Winter Park
Thornton
Greeley
Lone Tree
Cripple Creek
Silverthorne
Central City
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Manitou Springs
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Brighton
Longmont
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Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Portland to Denver
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from Portland to Denver
Discover the top 6 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 December 4, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$151 | Average$256 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$226 | Average$334 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$254 | Average$374 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$256 | Average$354 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$293 | Average$450 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$296 | Average$540 | FlexibilityNo cancel fee | On-time69% |