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$126+ 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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — DEN
feb. 23 — mar. 21
lun. 2/23
lun. 3/2
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 October or November, booked 72 days in advance, depart on a Friday or Wednesday 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 enero 24, 2026.

This JetBlue deal was found by Cheapflights users on 1/23. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/112:18 pm
PWM
-
DEN
1 stop10h 43m
JetBlue
mar. 5/1211:05 am
DEN
-
PWM
1 stop10h 31m
JetBlue
Deal found 1/23$215
This Southwest deal was found by Cheapflights users on 1/22. 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.
mié. 2/2512:45 pm
PWM
-
DEN
1 stop8h 35m
Southwest
mar. 3/36:20 am
DEN
-
PWM
1 stop6h 35m
Southwest
Deal found 1/22$251
This American Airlines deal was found by Cheapflights users on 1/22. 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.
mié. 2/255:40 pm
PWM
-
DEN
1 stop6h 57m
American Airlines
mié. 3/48:00 am
DEN
-
PWM
1 stop7h 07m
American Airlines
Deal found 1/22$252
This American Airlines deal was found by Cheapflights users on 1/22. 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.
mié. 2/255:40 pm
PWM
-
DEN
1 stop6h 57m
American Airlines
mar. 3/310:20 am
DEN
-
PWM
2 stops11h 30m
American Airlines
Deal found 1/22$256
This American Airlines deal was found by Cheapflights users on 1/22. 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.
mié. 3/45:40 pm
PWM
-
DEN
1 stop6h 57m
American Airlines
mié. 3/117:00 am
DEN
-
PWM
1 stop8h 07m
American Airlines
Deal found 1/22$264
This American Airlines deal was found by Cheapflights users on 1/22. 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.
sáb. 2/285:57 pm
PWM
-
DEN
1 stop6h 40m
American Airlines
jue. 3/57:00 am
DEN
-
PWM
1 stop8h 07m
American Airlines
Deal found 1/22$270
This American Airlines deal was found by Cheapflights users on 1/22. 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.
mié. 3/46:00 am
PWM
-
DEN
2 stops9h 38m
American Airlines
jue. 3/127:00 am
DEN
-
PWM
1 stop8h 07m
American Airlines
Deal found 1/22$275
This American Airlines deal was found by Cheapflights users on 1/22. 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.
mié. 4/85:45 pm
PWM
-
DEN
1 stop6h 55m
American Airlines
mié. 4/227:51 am
DEN
-
PWM
1 stop7h 24m
American Airlines
Deal found 1/22$277
This Delta deal was found by Cheapflights users on 1/21. 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.
sáb. 3/72:35 pm
PWM
-
DEN
1 stop9h 46m
Delta
mié. 3/116:10 am
DEN
-
PWM
1 stop7h 56m
Delta
Deal found 1/21$283
This Delta deal was found by Cheapflights users on 1/21. 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.
lun. 3/94:48 pm
PWM
-
DEN
1 stop6h 40m
Delta
mié. 3/116:10 am
DEN
-
PWM
1 stop7h 56m
Delta
Deal found 1/21$287

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 enero 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$215
(JetBlue)

One-way from

$126
(American Airlines)

Popular in

June

Cheapest in

October

Average price

$403

Good round-trip deal

$531 or less

Good one-way deal

$191 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. 11% potential increase in price ($56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 enero 24, 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

mié. 2/18

5:40 pm-10:37 pm

1 stop6h 57m

Denver Intl

jue. 2/26

7:00 am-5:07 pm

1 stop8h 07m

$270

PortlandDenver

PWM - DEN

PWMDEN

Portland

mar. 3/24

6:25 am-11:25 am

1 stop7h 00m

Denver Intl

sáb. 3/28

6:10 am-4:06 pm

1 stop7h 56m

$283

PortlandDenver

PWM - DEN

PWMDEN

Portland

lun. 3/9

4:48 pm-9:28 pm

1 stop6h 40m

Denver Intl

mié. 3/11

6:10 am-4:06 pm

1 stop7h 56m

$287

PortlandDenver

PWM - DEN

PWMDEN

Portland

lun. 4/6

2:30 pm-7:36 pm

1 stop7h 06m

Denver Intl

sáb. 4/11

6:10 am-4:06 pm

1 stop7h 56m

$289

PortlandDenver

PWM - DEN

PWMDEN

Portland

mié. 2/25

2:35 pm-10:21 pm

1 stop9h 46m

Denver Intl

mar. 3/10

6:10 am-4:06 pm

1 stop7h 56m

$289

PortlandDenver

PWM - DEN

PWMDEN

Portland

lun. 3/16

2:50 pm-10:35 pm

1 stop9h 45m

Denver Intl

lun. 3/23

11:55 pm-11:55 am

1 stop10h 00m

$295

PortlandDenver

PWM - DEN

PWMDEN

Portland

lun. 3/16

2:30 pm-7:36 pm

1 stop7h 06m

Denver Intl

mar. 3/24

6:10 am-4:06 pm

1 stop7h 56m

$308

PortlandDenver

PWM - DEN

PWMDEN

Portland

mié. 4/1

4:48 pm-9:28 pm

1 stop6h 40m

Denver Intl

lun. 4/6

6:10 am-4:06 pm

1 stop7h 56m

$308

PortlandDenver

PWM - DEN

PWMDEN

Portland

lun. 3/30

5:23 am-1:34 pm

1 stop10h 11m

Denver Intl

mié. 4/1

7:30 am-5:08 pm

1 stop7h 38m

$308

PortlandDenver

PWM - DEN

PWMDEN

Portland

lun. 2/23

1:00 pm-8:20 pm

1 stop9h 20m

Denver Intl

vie. 2/27

6:05 am-4:15 pm

1 stop8h 10m

$314

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

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
JustAirTicketPrice Accuracy-Trust Score*1 star

*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 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 Expedia the most. Expedia 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 January 23, 2026.

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 enero 24, 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
4,268 reviews

Food

7.0

Entertainment

7.5

Overall

8.0

Comfort

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
4,268 reviews
Southwest
8.0
Very good
4,268 reviews

Food

7.0

Entertainment

7.5

Overall

8.0

Comfort

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
8,111 reviews
Southwest
8.0
Very good
4,268 reviews

Food

7.0

Entertainment

7.5

Overall

8.0

Comfort

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
9,193 reviews
Southwest
8.0
Very good
4,268 reviews

Food

7.0

Entertainment

7.5

Overall

8.0

Comfort

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
11,193 reviews
Southwest
8.0
Very good
4,268 reviews

Food

7.0

Entertainment

7.5

Overall

8.0

Comfort

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
2,895 reviews
Southwest
8.0
Very good
4,268 reviews

Food

7.0

Entertainment

7.5

Overall

8.0

Comfort

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 $270, American Airlines 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 ($87), JetBlue ($226), and American Airlines ($256) 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 $489, our data shows the cheapest flight currently is $191. When looking at the most popular route, (Portland - Denver Intl), you can expect to pay $251 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
Lakewood
Broomfield
Westminster
Golden
Greeley
Lone Tree
Centennial
Wheat Ridge
Cripple Creek
Winter Park
Silverthorne
Central City
Glendale
Manitou Springs
Frisco
Fort Morgan
Brighton
Evergreen

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 enero 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$87Average$256FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$226Average$341FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$256Average$375FlexibilityNo cancel feeOn-time71%
DeltaCheapest$256Average$356FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$288Average$447FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$294Average$532FlexibilityNo cancel feeOn-time69%

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