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$145+ 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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — DEN
Feb 3 — Feb 101
Tue 2/3
Tue 2/10
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 Tuesday and return on a Tuesday

Cheap 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 January 4, 2026.

This American Airlines deal was found by Cheapflights users on 1/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/185:40 pmPWM - DEN
1 stop6h 57mAmerican Airlines
Tue 2/248:00 amDEN - PWM
1 stop7h 07mAmerican Airlines
Deal found 1/3$251
This Kiwi.com deal was found by Cheapflights users on 1/1. 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 2/95:06 pmPWM - DEN
2 stops23h 00mMultiple Airlines
Sat 2/1411:59 pmDEN - PWM
1 stop31h 08mMultiple Airlines
Deal found 1/1$262
This American Airlines deal was found by Cheapflights users on 1/2. 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 1/203:58 pmPWM - DEN
1 stop8h 26mAmerican Airlines
Wed 1/286:00 amDEN - PWM
1 stop7h 31mAmerican Airlines
Deal found 1/2$270
This Kiwi.com deal was found by Cheapflights users on 1/3. 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 1/2311:29 amPWM - DEN
1 stop12h 20mMultiple Airlines
Mon 1/269:05 pmDEN - PWM
2 stops35h 17mMultiple Airlines
Deal found 1/3$274
This American Airlines deal was found by Cheapflights users on 1/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/612:40 pmPWM - DEN
2 stops10h 13mAmerican Airlines
Tue 2/1011:29 amDEN - PWM
1 stop8h 38mAmerican Airlines
Deal found 1/3$275
This United Airlines deal was found by Cheapflights users on 1/3. 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.
Tue 4/289:30 amPWM - DEN
1 stop7h 21mUnited Airlines
Sat 5/29:40 amDEN - PWM
Nonstop3h 55mUnited Airlines
Deal found 1/3$279
This Delta deal was found by Cheapflights users on 1/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/16:25 amPWM - DEN
1 stop7h 00mDelta
Tue 4/71:05 pmDEN - PWM
1 stop8h 17mDelta
Deal found 1/3$289
This American Airlines deal was found by Cheapflights users on 1/2. 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.
Fri 2/276:00 amPWM - DEN
2 stops9h 38mAmerican Airlines
Mon 3/27:00 amDEN - PWM
1 stop8h 07mAmerican Airlines
Deal found 1/2$294

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 January 4, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$251
(American Airlines)

One-way from

$145
(American Airlines)

Popular in

July

Cheapest in

January

Average price

$383

Good one-way deal

$442 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 ($52 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 January 2026
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 January 4, 2026.
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

Tue 1/20

3:58 pm-10:24 pm

1 stop8h 26m

Denver Intl

Wed 1/28

6:00 am-3:31 pm

1 stop7h 31m

$270

PortlandDenver

PWM - DEN

PWMDEN

Portland

Sat 2/28

12:29 pm-10:37 pm

2 stops12h 08m

Denver Intl

Thu 3/5

9:22 am-5:07 pm

1 stop5h 45m

$276

PortlandDenver

PWM - DEN

PWMDEN

Portland

Fri 2/27

6:00 am-1:38 pm

2 stops9h 38m

Denver Intl

Wed 3/4

8:00 am-5:07 pm

1 stop7h 07m

$276

PortlandDenver

PWM - DEN

PWMDEN

Portland

Tue 4/28

9:30 am-2:51 pm

1 stop7h 21m

Denver Intl

Sat 5/2

9:40 am-3:35 pm

Nonstop3h 55m

$279

PortlandDenver

PWM - DEN

PWMDEN

Portland

Mon 2/9

5:20 am-4:21 pm

2 stops13h 01m

Denver Intl

Sat 2/14

7:00 am-6:19 pm

2 stops9h 19m

$281

PortlandDenver

PWM - DEN

PWMDEN

Portland

Tue 3/31

2:30 pm-7:36 pm

1 stop7h 06m

Denver Intl

Wed 4/8

6:10 am-4:06 pm

1 stop7h 56m

$289

PortlandDenver

PWM - DEN

PWMDEN

Portland

Thu 5/7

2:35 pm-10:49 pm

1 stop10h 14m

Denver Intl

Tue 5/12

12:59 am-12:18 pm

1 stop9h 19m

$289

PortlandDenver

PWM - DEN

PWMDEN

Portland

Wed 4/1

6:25 am-11:25 am

1 stop7h 00m

Denver Intl

Tue 4/7

1:05 pm-11:22 pm

1 stop8h 17m

$289

PortlandDenver

PWM - DEN

PWMDEN

Portland

Sun 4/5

6:25 am-11:25 am

1 stop7h 00m

Denver Intl

Sat 4/11

6:10 am-4:06 pm

1 stop7h 56m

$289

PortlandDenver

PWM - DEN

PWMDEN

Portland

Sat 4/4

6:25 am-11:25 am

1 stop7h 00m

Denver Intl

Sat 4/11

6:10 am-4:06 pm

1 stop7h 56m

$289

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/3

Showing 1-10 of 22 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 January.
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 December 26, 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.

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 January 4, 2026.
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
4,252 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,252 reviews
Southwest
8.0
Very good
4,252 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,020 reviews
Southwest
8.0
Very good
4,252 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,139 reviews
Southwest
8.0
Very good
4,252 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,076 reviews
Southwest
8.0
Very good
4,252 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
JetBlue
7.2
Good
2,900 reviews
Southwest
8.0
Very good
4,252 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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.

  • 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 $279, American Airlines can have you in Denver from Portland, Maine in 7h 21m. 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 ($87), JetBlue ($226), and American Airlines ($253) offers the cheapest pricing from Portland, Maine to Denver. You may be able to fly from Portland, Maine to Denver for 80% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Portland, Maine to Denver one-way?

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $99. Delta flights start at $128 while deals on Southwest start at $144 one-way.

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

    While on average a flight from Portland, Maine to Denver is generally $538, our data shows the cheapest flight currently is $188. When looking at the most popular route, (Portland - Denver Intl), you can expect to pay $289 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
Thornton
Black Hawk
Broomfield
Westminster
Lakewood
Golden
Greeley
Lone Tree
Wheat Ridge
Cripple Creek
Winter Park
Silverthorne
Central City
Frisco
Manitou Springs
Fort Morgan
Brighton
Longmont
Evergreen
Idaho Springs

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 January 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$151Average$258FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$226Average$341FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$253Average$380FlexibilityNo cancel feeOn-time71%
DeltaCheapest$256Average$358FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$292Average$450FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$295Average$535FlexibilityNo cancel feeOn-time69%

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