HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portland

$99+ 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 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — PWM
Aug 18 — Aug 251
Mon 8/18
Mon 8/25
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Denver to Portland 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 Denver Intl to Portland are usually found in November or May, booked 59 days in advance, depart on a Saturday or Tuesday and return on a Thursday

Cheap 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 August 13, 2025.

Round-trip from

$274
(Southwest)

One-way from

$99
(Southwest)

Popular in

February

Cheapest in

November

Average price

$474

Good round-trip deal

$490 or less

Good one-way deal

$273 or less
From Denver Intl to Portland
Search Deals
One-way flight from Denver Intl to Portland
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals
Price to beat on a round-trip flight from Denver Intl to Portland.
Search Deals
Price to beat on a one-way flight from Denver Intl to Portland.
Search Deals

Find 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 August 13, 2025.

This Southwest deal was found by Cheapflights users on 8/10. 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 9/95:50 amDEN - PWM
1 stop7h 05mSouthwest
Tue 9/164:55 pmPWM - DEN
1 stop7h 40mSouthwest
Deal found 8/10$274
This Southwest deal was found by Cheapflights users on 8/11. 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.
Thu 9/42:15 pmDEN - PWM
1 stop7h 05mSouthwest
Tue 9/95:50 amPWM - DEN
2 stops9h 35mSouthwest
Deal found 8/11$278
This United Airlines deal was found by Cheapflights users on 8/12. 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.
Sat 9/139:55 amDEN - PWM
Nonstop3h 55mUnited Airlines
Sat 9/207:26 pmPWM - DEN
1 stop6h 33mUnited Airlines
Deal found 8/12$279
This Southwest deal was found by Cheapflights users on 8/12. 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.
Thu 9/1111:40 pmDEN - PWM
1 stop8h 10mSouthwest
Tue 9/163:40 pmPWM - DEN
1 stop6h 20mSouthwest
Deal found 8/12$280
This FlightHub deal was found by Cheapflights users on 8/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/166:00 amDEN - PWM
1 stop10h 13mFrontier
Sat 8/231:41 pmPWM - DEN
1 stop11h 30mFrontier
Deal found 8/12$285
This Delta deal was found by Cheapflights users on 8/12. 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 9/32:00 pmDEN - PWM
1 stop8h 03mDelta
Wed 9/1011:50 amPWM - DEN
1 stop7h 05mDelta
Deal found 8/12$289
This American Airlines deal was found by Cheapflights users on 8/11. 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.
Sat 9/207:16 amDEN - PWM
2 stops7h 23mAmerican Airlines
Fri 10/31:57 pmPWM - DEN
1 stop10h 05mAmerican Airlines
Deal found 8/11$294
This American Airlines deal was found by Cheapflights users on 8/13. 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 10/2412:29 pmDEN - PWM
2 stops9h 22mAmerican Airlines
Mon 10/276:14 amPWM - DEN
1 stop9h 18mAmerican Airlines
Deal found 8/13$295
This American Airlines deal was found by Cheapflights users on 8/11. 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 9/37:20 amDEN - PWM
2 stops10h 51mAmerican Airlines
Wed 9/102:02 pmPWM - DEN
2 stops10h 14mAmerican Airlines
Deal found 8/11$299
This Southwest deal was found by Cheapflights users on 8/13. 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.
Mon 9/811:40 pmDEN - PWM
1 stop8h 10mSouthwest
Wed 9/109:05 amPWM - DEN
2 stops9h 00mSouthwest
Deal found 8/13$304
This Southwest deal was found by Cheapflights users on 8/13. 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.
Sat 9/139:40 amDEN - PWM
2 stops10h 20mSouthwest
Sun 9/217:55 pmPWM - DEN
1 stop13h 05mSouthwest
Deal found 8/13$309

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 August 13, 2025.
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 9/9

5:50 am-2:55 pm

1 stop7h 05m

Portland

Tue 9/16

4:55 pm-10:35 pm

1 stop7h 40m

$274

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Fri 10/24

6:25 am-2:05 pm

1 stop5h 40m

Portland

Tue 10/28

7:40 am-2:45 pm

2 stops9h 05m

$278

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Thu 9/4

2:15 pm-11:20 pm

1 stop7h 05m

Portland

Tue 9/9

5:50 am-1:25 pm

2 stops9h 35m

$278

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Thu 10/23

12:42 pm-12:05 am

1 stop9h 23m

Portland

Tue 10/28

2:38 pm-9:41 pm

1 stop9h 03m

$279

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Sat 9/13

9:55 am-3:50 pm

Nonstop3h 55m

Portland

Wed 9/17

4:56 pm-11:13 pm

1 stop8h 17m

$279

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Wed 10/15

5:45 am-4:03 pm

1 stop8h 18m

Portland

Wed 10/22

1:27 pm-8:15 pm

1 stop8h 48m

$279

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Wed 9/10

2:00 pm-12:03 am

1 stop8h 03m

Portland

Sat 9/13

2:41 pm-7:35 pm

1 stop6h 54m

$279

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Tue 9/9

2:00 pm-12:03 am

1 stop8h 03m

Portland

Tue 9/16

2:41 pm-10:35 pm

1 stop9h 54m

$279

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Thu 10/23

5:30 am-4:30 pm

1 stop9h 00m

Portland

Tue 10/28

4:00 pm-10:20 pm

1 stop8h 20m

$279

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Sat 9/13

7:05 am-5:16 pm

1 stop8h 11m

Portland

Wed 9/17

2:41 pm-10:35 pm

1 stop9h 54m

$279

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 17 results
1
2

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 August 8, 2025.

Booking 59 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 $296). Flying from Denver to Portland, Maine in July is currently the most expensive (average of $394). 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 DEN to PWM?

Find hourly flight availability from Denver to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 13, 2025.

One of the essential ways to save on airfare from Denver to Portland, Maine is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 45% on airfare.

What is the cheapest day to fly from Denver to Portland, Maine?

Use this chart to determine the cheapest time to fly round-trip from Denver to Portland. Price data was last updated on August 10, 2025.

Travelers seeking maximum savings on their Denver to Portland, Maine flight should consider departing on Saturday evenings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Denver to Portland, Maine

Explore weekly flight availability from Denver to Portland. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 13, 2025.

The most flights from DEN to PWM are scheduled on a Monday (2 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 on average).

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 August 13, 2025.
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
4,246 reviews

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,979 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,920 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
JetBlue
7.2
Good
2,915 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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.

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

    If you wish to fly to Portland from Denver, then you need to book flights from Denver Intl to Portland. There is 1 flight from Denver Intl (DEN) to Portland (PWM) per day to choose from. Flights to Portland from Denver Intl are available from 6 different airlines, which means you should have some options if you want to compare airfare deals. 3h 43m is how long a nonstop flight from Denver to Portland typically takes.

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

    According to our current data, Southwest ($274), and United Airlines ($279) offers the cheapest pricing from Denver to Portland, Maine. These flights start at 39% lower than the current average price 3 months from now.

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

    On average you can expect to pay $663 for a flight from Denver to Portland, Maine. The cheapest flight overall is $273 while the most popular route, (Denver Intl - Portland) is currently priced at $244.

  • 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 $296). Flying from Denver to Portland, Maine in July is currently the most expensive (average of $394). 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
Brunswick
North Conway
Auburn
Conway
Lewiston

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 August 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$129Average$232FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$207Average$367FlexibilityNo cancel feeOn-time71%
DeltaCheapest$246Average$327FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$249Average$315FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$282Average$449FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$311Average$591FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.