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$136+ 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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — DEN
déc. 20 — déc. 271
sam. 12/20
sam. 12/27
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Portland to Denver Intl are usually found in January or April, booked 72 days in advance, depart on a Friday or Wednesday and return on a Tuesday

Find flight deals from Portland to Denver

Cheapest flights from Portland to Denver
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 novembre 20, 2025.

This United Airlines deal was found by Cheapflights users on 11/19. 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.
ven. 12/122:13 pmPWM - DEN
1 stop7h 14mUnited Airlines
dim. 12/141:50 pmDEN - PWM
1 stop7h 19mUnited Airlines
Deal found 11/19$289
This Kiwi.com deal was found by Cheapflights users on 11/18. 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.
ven. 12/511:21 amPWM - DEN
1 stop11h 19mMultiple Airlines
ven. 12/1211:00 pmDEN - PWM
1 stop16h 38mMultiple Airlines
Deal found 11/18$302
This Kiwi.com deal was found by Cheapflights users on 11/18. 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.
mer. 12/36:18 pmPWM - DEN
2 stops31h 41mMultiple Airlines
dim. 12/79:34 amDEN - PWM
1 stop21h 32mMultiple Airlines
Deal found 11/18$315
This American Airlines deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 12/185:39 amPWM - DEN
1 stop7h 26mAmerican Airlines
jeu. 12/256:44 amDEN - PWM
2 stops7h 59mAmerican Airlines
Deal found 11/20$318
This American Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 12/115:34 amPWM - DEN
2 stops12h 32mAmerican Airlines
jeu. 12/1811:53 amDEN - PWM
1 stop8h 58mAmerican Airlines
Deal found 11/19$319
This Delta deal was found by Cheapflights users on 11/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 12/612:12 pmPWM - DEN
1 stop7h 41mDelta
mer. 12/101:16 pmDEN - PWM
1 stop7h 07mDelta
Deal found 11/17$324
This Southwest deal was found by Cheapflights users on 11/18. 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.
jeu. 12/115:30 amPWM - DEN
2 stops10h 25mSouthwest
lun. 12/157:00 amDEN - PWM
1 stop5h 55mSouthwest
Deal found 11/18$329
This American Airlines deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 12/115:34 amPWM - DEN
2 stops12h 32mAmerican Airlines
lun. 12/159:11 amDEN - PWM
2 stops12h 26mAmerican Airlines
Deal found 11/20$344
This United Airlines deal was found by Cheapflights users on 11/20. 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.
jeu. 12/116:00 amPWM - DEN
1 stop8h 04mUnited Airlines
lun. 12/158:05 amDEN - PWM
1 stop8h 49mUnited Airlines
Deal found 11/20$346
This United Airlines deal was found by Cheapflights users on 11/18. 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.
jeu. 12/116:00 amPWM - DEN
1 stop8h 04mUnited Airlines
dim. 12/141:50 pmDEN - PWM
1 stop7h 19mUnited Airlines
Deal found 11/18$348

Cheap 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 novembre 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$235
(Kiwi.com)

One-way from

$136
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$424

Good round-trip deal

$374 or less

Good one-way deal

$164 or less
Provider with most accurate pricing for Portland-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Denver Intl flights.
Search Deals
From Portland to Denver Intl
Search Deals
One-way flight from Portland to Denver Intl
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($49 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from Portland to Denver Intl.
Search Deals
Price to beat on a one-way flight from Portland to Denver Intl.
Search Deals

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 novembre 20, 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

ven. 1/30

11:29 am-9:49 pm

1 stop12h 20m

Denver Intl

mer. 2/4

7:59 pm-9:07 am

2 stops35h 08m

$276

PortlandDenver

PWM - DEN

PWMDEN

Portland

mar. 3/31

4:50 pm-9:47 pm

1 stop6h 57m

Denver Intl

mer. 4/8

6:45 am-4:15 pm

1 stop7h 30m

$289

PortlandDenver

PWM - DEN

PWMDEN

Portland

lun. 1/12

12:45 pm-7:20 pm

1 stop8h 35m

Denver Intl

sam. 1/17

6:20 am-2:50 pm

1 stop6h 30m

$289

PortlandDenver

PWM - DEN

PWMDEN

Portland

mar. 3/31

2:35 pm-10:49 pm

1 stop10h 14m

Denver Intl

mar. 4/7

7:00 am-3:56 pm

1 stop6h 56m

$289

PortlandDenver

PWM - DEN

PWMDEN

Portland

mer. 4/1

2:35 pm-10:49 pm

1 stop10h 14m

Denver Intl

mar. 4/7

10:45 am-9:59 pm

1 stop9h 14m

$289

PortlandDenver

PWM - DEN

PWMDEN

Portland

mar. 1/20

2:35 pm-10:46 pm

1 stop10h 11m

Denver Intl

sam. 1/31

1:16 pm-10:27 pm

1 stop7h 11m

$289

PortlandDenver

PWM - DEN

PWMDEN

Portland

sam. 1/10

2:35 pm-10:46 pm

1 stop10h 11m

Denver Intl

mar. 1/13

1:15 pm-10:27 pm

1 stop7h 12m

$289

PortlandDenver

PWM - DEN

PWMDEN

Portland

mer. 1/7

5:45 am-2:10 pm

2 stops10h 25m

Denver Intl

mar. 1/13

6:20 am-2:55 pm

1 stop6h 35m

$294

PortlandDenver

PWM - DEN

PWMDEN

Portland

mer. 2/11

3:30 pm-10:40 pm

2 stops9h 10m

Denver Intl

mar. 2/17

5:30 am-3:15 pm

1 stop7h 45m

$294

PortlandDenver

PWM - DEN

PWMDEN

Portland

mar. 3/31

4:50 pm-9:47 pm

1 stop6h 57m

Denver Intl

jeu. 4/9

6:45 am-4:15 pm

1 stop7h 30m

$299

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 23 results
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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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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 14, 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 novembre 20, 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 novembre 20, 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.
Southwest
8.0
Very good
4,251 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,251 reviews
Southwest
8.0
Very good
4,251 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
7.9
Good
8,002 reviews
Southwest
8.0
Very good
4,251 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
9,028 reviews
Southwest
8.0
Very good
4,251 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,047 reviews
Southwest
8.0
Very good
4,251 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
JetBlue
7.2
Good
2,902 reviews
Southwest
8.0
Very good
4,251 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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.

  • What airports do I use to fly from Portland to Denver?

    Denver Intl is the airport most travelers will use when flying to Denver from Portland. Booking flights from Portland (PWM) to Denver Intl (DEN) should be relatively easy as there is 1 daily flight to Denver from 6 different airlines. 4h 45m is how long a flight from Portland to Denver Intl will take if you book a nonstop flight.

  • How popular is this Portland, Maine to Denver flight route?

    Flights from Portland to Denver Intl have been viewed 1 times in the past calendar month.

  • How long is the flight from Portland, Maine to Denver?

    For as low as $289, Delta can have you in Denver from Portland, Maine in 6h 57m. There are 1776 mi between Portland, Maine and Denver. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Portland, Maine to Denver round-trip?

    According to our current data, Frontier ($149), JetBlue ($226), and American Airlines ($254) offers the cheapest pricing from Portland, Maine to Denver. You may be able to fly from Portland, Maine to Denver for 66% less than the average price by searching for these airlines.

  • What are the cheapest flights from Portland, Maine to Denver?

    While on average a flight from Portland, Maine to Denver is generally $722, our data shows the cheapest flight currently is $128. When looking at the most popular route, (Portland - Denver Intl), you can expect to pay $279 for that flight.

  • Can I find deals for flights from Portland to Denver that include hotel bookings?

    Yes. In addition to deals on Portland to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Denver.

  • Can I find deals for business class flights from Portland to Denver?

    Yes. Cheapflights offers flight deals from Portland to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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.

See more FAQs

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Black Hawk
Westminster
Broomfield
Lakewood
Golden
Winter Park
Greeley
Lone Tree
Cripple Creek
Thornton
Silverthorne
Wheat Ridge
Central City
Manitou Springs
Fort Morgan
Brighton
Longmont
Idaho Springs
Parker
Sterling

Browse thousands of different options on Cheapflights for your next trip

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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 novembre 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$149Average$256FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$226Average$334FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$254Average$376FlexibilityNo cancel feeOn-time71%
DeltaCheapest$256Average$353FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$295Average$546FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$297Average$458FlexibilityNo cancel feeOn-time63%

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