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$117+ Cheap flights from Denver to Portland, ME (DEN - PWM)

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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — PWM
Mar 10 — Mar 171
Tue 3/10
Tue 3/17
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 Denver Intl to Portland are usually found in November or October, booked 28 days in advance, depart on a Tuesday or Friday and return on a Friday

Cheap flight deals from Denver to Portland

Cheapest flights from Denver to Portland
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 February 8, 2026.

This United Airlines deal was found by Cheapflights users on 2/8. 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 5/59:45 am
DEN
-
PWM
Nonstop3h 56m
United Airlines
Tue 5/125:30 am
PWM
-
DEN
1 stop8h 30m
United Airlines
Deal found 2/8$269
This American Airlines deal was found by Cheapflights users on 2/8. 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 4/297:36 am
DEN
-
PWM
1 stop7h 45m
American Airlines
Mon 5/45:51 pm
PWM
-
DEN
1 stop8h 08m
American Airlines
Deal found 2/8$279
This American Airlines deal was found by Cheapflights users on 2/7. 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 4/227:36 am
DEN
-
PWM
1 stop7h 45m
American Airlines
Wed 4/293:39 pm
PWM
-
DEN
2 stops9h 01m
American Airlines
Deal found 2/7$284
This Southwest deal was found by Cheapflights users on 2/7. 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 3/1011:55 pm
DEN
-
PWM
2 stops10h 00m
Southwest
Thu 3/125:30 pm
PWM
-
DEN
1 stop7h 05m
Southwest
Deal found 2/7$288
This American Airlines deal was found by Cheapflights users on 2/8. 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 5/512:24 pm
DEN
-
PWM
2 stops8h 58m
American Airlines
Tue 5/1210:47 am
PWM
-
DEN
2 stops11h 08m
American Airlines
Deal found 2/8$289
This United Airlines deal was found by Cheapflights users on 2/7. 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 4/3011:59 pm
DEN
-
PWM
1 stop6h 50m
United Airlines
Fri 5/83:23 pm
PWM
-
DEN
Nonstop4h 39m
United Airlines
Deal found 2/7$291
This United Airlines deal was found by Cheapflights users on 2/5. 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 3/66:00 am
DEN
-
PWM
1 stop7h 14m
United Airlines
Wed 3/114:23 pm
PWM
-
DEN
1 stop9h 07m
United Airlines
Deal found 2/5$297
This Delta deal was found by Cheapflights users on 2/8. 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 5/16:20 am
DEN
-
PWM
1 stop7h 37m
Delta
Mon 5/44:42 pm
PWM
-
DEN
1 stop6h 45m
Delta
Deal found 2/8$299
This United Airlines deal was found by Cheapflights users on 2/7. 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 2/241:40 pm
DEN
-
PWM
1 stop7h 40m
United Airlines
Tue 3/34:15 pm
PWM
-
DEN
1 stop7h 50m
United Airlines
Deal found 2/7$304
This Southwest deal was found by Cheapflights users on 2/5. 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.
Wed 3/185:40 am
DEN
-
PWM
1 stop8h 15m
Southwest
Wed 3/255:30 am
PWM
-
DEN
2 stops10h 55m
Southwest
Deal found 2/5$309
This CheapOair deal was found by Cheapflights users on 2/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3011:05 am
DEN
-
PWM
1 stop24h 18m
JetBlue
Tue 6/22:18 pm
PWM
-
DEN
1 stop10h 43m
JetBlue
Deal found 2/6$310

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 February 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$269
(United Airlines)

One-way from

$117
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$468

Good round-trip deal

$573 or less
Provider with most accurate pricing for Denver Intl-Portland flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Portland flights.
Search Deals
From Denver Intl to Portland
Search Deals
One-way flight from Denver Intl to Portland
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($60 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 February 2026
Search Deals
Price to beat on a round-trip flight from Denver Intl to Portland.
Search Deals

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 2,558,603 searches. Data last updated February 8, 2026.
Use the filters below to find and compare flights from Denver to Portland that are best for you.

Fly from

Denver

Fly to

Portland

Route

Depart

Return

Price

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Tue 5/5

9:45 am-3:41 pm

Nonstop3h 56m

Portland

Tue 5/12

5:30 am-12:00 pm

1 stop8h 30m

$269

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Wed 3/11

12:51 pm-11:03 pm

1 stop8h 12m

Portland

Mon 3/16

2:30 pm-9:46 pm

1 stop9h 16m

$279

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Wed 4/29

7:36 am-5:21 pm

1 stop7h 45m

Portland

Mon 5/4

5:51 pm-11:59 pm

1 stop8h 08m

$279

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Wed 3/18

6:00 am-3:14 pm

1 stop7h 14m

Portland

Wed 3/25

4:23 pm-11:30 pm

1 stop9h 07m

$279

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Tue 5/5

7:36 am-5:21 pm

1 stop7h 45m

Portland

Tue 5/12

10:47 am-7:55 pm

2 stops11h 08m

$284

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Tue 3/10

11:55 pm-11:55 am

2 stops10h 00m

Portland

Thu 3/12

5:30 pm-10:35 pm

1 stop7h 05m

$288

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Thu 4/30

11:59 pm-8:49 am

1 stop6h 50m

Portland

Fri 5/8

3:23 pm-6:02 pm

Nonstop4h 39m

$291

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Fri 3/6

6:00 am-3:14 pm

1 stop7h 14m

Portland

Wed 3/11

4:23 pm-11:30 pm

1 stop9h 07m

$297

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Tue 5/5

11:40 am-4:16 pm

1 stop26h 36m

$117

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Tue 3/24

11:55 pm-11:55 am

2 stops10h 00m

$145

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/7

Showing 1-10 of 17 results
1
2

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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 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.
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?

Use this chart to determine the optimal time to book a round-trip flight from Denver to Portland. Price data was last updated on January 30, 2026.

Booking 28 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 $98). Flying from Denver to Portland, Maine in June is currently the most expensive (average of $176). 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 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 February 8, 2026.
Peruse reviews from past customers who have flown with Southwest, Delta, and United 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.
Southwest
8.0
Very good
4,280 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

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
4,280 reviews
Southwest
8.0
Very good
4,280 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

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
8,172 reviews
Southwest
8.0
Very good
4,280 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

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
9,254 reviews
Southwest
8.0
Very good
4,280 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

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
11,249 reviews
Southwest
8.0
Very good
4,280 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

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
Frontier
5.7
Fair
3,052 reviews
Southwest
8.0
Very good
4,280 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

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 Denver to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    United Airlines, Delta, and American Airlines can get you from Denver to Portland, Maine in just under 3h 56m. Your travel time can differ by up to 4h 16m. Airlines will cover a distance of 1776 mi. This flight may include one or multiple stops.

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

    According to our current data, Frontier ($65), JetBlue ($139), and American Airlines ($192) offers the cheapest pricing from Denver to Portland, Maine. These flights start at 85% lower than the current average price 3 months from now.

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

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $84. Frontier flights start at $85 while deals on Delta start at $108 one-way.

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

    On average you can expect to pay $854 for a flight from Denver to Portland, Maine. The cheapest flight overall is $416 while the most popular route, (Denver Intl - Portland) is currently priced at $279.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Denver to Portland 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 Denver to Portland, Maine?

    Currently, January is the cheapest month in which you can book a flight from Denver to Portland, Maine (average of $98). Flying from Denver to Portland, Maine in June is currently the most expensive (average of $176). 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 Portland?

Book flights to Portland if you plan to visit one of these locations
North Conway
Brunswick
Auburn
Conway

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Top 6 airlines flying from Denver to Portland

Discover the top 6 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 2,558,603 searches. Data last updated February 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$129Average$207FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$139Average$282FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$192Average$376FlexibilityNo cancel feeOn-time71%
DeltaCheapest$192Average$317FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$272Average$436FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$288Average$568FlexibilityNo cancel feeOn-time69%

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