Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Portland, Maine to Denver from $113

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to Denver departing on 5/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Portland, Maine to Denver

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:06 pm - 6:59 pm
PWM
-
DEN
27h 53m2 stops
Multiple Airlines Logo
1:20 pm - 5:38 pm
DEN
-
PWM
26h 18m1 stop
$246Multiple Airlines
Mon, Jan 26 - Tue, Feb 3
American Airlines Logo
12:45 pm - 7:32 pm
PWM
-
DEN
8h 47m1 stop
American Airlines Logo
6:00 am - 3:31 pm
DEN
-
PWM
7h 31m1 stop
$251American Airlines
Sat, Jan 17 - Wed, Jan 21
American Airlines Logo
3:40 pm - 9:42 pm
PWM
-
DEN
8h 02m1 stop
American Airlines Logo
6:59 am - 3:08 pm
DEN
-
PWM
6h 09m1 stop
$252American Airlines
Wed, Feb 25 - Wed, Mar 4
American Airlines Logo
12:46 pm - 10:34 pm
PWM
-
DEN
11h 48m2 stops
American Airlines Logo
6:00 am - 3:31 pm
DEN
-
PWM
7h 31m1 stop
$256American Airlines
Sat, Jan 17 - Tue, Jan 20
Multiple Airlines Logo
11:29 am - 9:49 pm
PWM
-
DEN
12h 20m1 stop
Multiple Airlines Logo
1:20 pm - 5:38 pm
DEN
-
PWM
26h 18m1 stop
$258Multiple Airlines
Mon, Jan 26 - Tue, Feb 3
American Airlines Logo
7:00 am - 6:13 pm
PWM
-
DEN
13h 13m2 stops
American Airlines Logo
10:45 am - 11:43 pm
DEN
-
PWM
10h 58m2 stops
$261American Airlines
Sat, Jan 17 - Tue, Jan 20
American Airlines Logo
3:58 pm - 9:11 pm
PWM
-
DEN
7h 13m1 stop
American Airlines Logo
6:00 am - 3:31 pm
DEN
-
PWM
7h 31m1 stop
$270American Airlines
Mon, Jan 26 - Tue, Feb 3
American Airlines Logo
7:00 am - 12:49 pm
PWM
-
DEN
7h 49m1 stop
American Airlines Logo
8:44 am - 9:37 pm
DEN
-
PWM
10h 53m2 stops
$275American Airlines
Sun, Jan 11 - Sat, Jan 17
United Airlines Logo
2:25 pm - 9:46 pm
PWM
-
DEN
9h 21m1 stop
United Airlines Logo
9:40 am - 3:35 pm
DEN
-
PWM
3h 55mnonstop
$279United Airlines
Tue, May 5 - Sat, May 9
American Airlines Logo
5:20 am - 3:16 pm
PWM
-
DEN
11h 56m2 stops
American Airlines Logo
10:45 am - 10:54 pm
DEN
-
PWM
10h 09m2 stops
$280American Airlines
Mon, Jan 26 - Tue, Feb 3

American Airlines flights from Portland, Maine to Denver

Our best American Airlines deals on Portland, Maine to Denver flight tickets
American Airlines
Jan 17
PWM12:45 pmPortland
8h 47m
1 stop
DEN7:32 pmDenver Intl
Jan 20
DEN6:00 amDenver Intl
7h 31m
1 stop
PWM3:31 pmPortland
$251
Find similar
American Airlines
Feb 25
PWM3:40 pmPortland
8h 02m
1 stop
DEN9:42 pmDenver Intl
Mar 4
DEN6:59 amDenver Intl
6h 09m
1 stop
PWM3:08 pmPortland
$252
Find similar
American Airlines
Jan 17
PWM5:30 amPortland
12h 51m
2 stops
DEN4:21 pmDenver Intl
Jan 21
DEN6:00 amDenver Intl
7h 31m
1 stop
PWM3:31 pmPortland
$256
Find similar

Southwest flights from Portland, Maine to Denver

Our best Southwest deals on Portland, Maine to Denver flight tickets
Southwest
Jan 15
PWM1:00 pmPortland
11h 40m
1 stop
DEN10:40 pmDenver Intl
Jan 18
DEN6:20 amDenver Intl
6h 35m
1 stop
PWM2:55 pmPortland
$294
Find similar
Southwest
Jan 6
PWM12:45 pmPortland
8h 35m
1 stop
DEN7:20 pmDenver Intl
Jan 14
DEN6:20 amDenver Intl
6h 35m
1 stop
PWM2:55 pmPortland
$305
Find similar
Southwest
Feb 10
PWM12:45 pmPortland
10h 35m
2 stops
DEN9:20 pmDenver Intl
Feb 12
DEN12:00 pmDenver Intl
9h 50m
2 stops
PWM11:50 pmPortland
$335
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Portland, Maine 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, momondo users made 832,500 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Portland, Maine to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandDenver

PWM - DEN

PWMDEN

Portland

Mon 1/26

5:06 pm-6:59 pm

2 stops27h 53m

Denver Intl

Tue 2/3

1:20 pm-5:38 pm

1 stop26h 18m

$246

PortlandDenver

PWM - DEN

PWMDEN

Portland

Sat 1/17

12:45 pm-7:32 pm

1 stop8h 47m

Denver Intl

Wed 1/21

6:00 am-3:31 pm

1 stop7h 31m

$251

PortlandDenver

PWM - DEN

PWMDEN

Portland

Wed 2/25

3:40 pm-9:42 pm

1 stop8h 02m

Denver Intl

Wed 3/4

6:59 am-3:08 pm

1 stop6h 09m

$252

PortlandDenver

PWM - DEN

PWMDEN

Portland

Sat 1/17

12:46 pm-10:34 pm

2 stops11h 48m

Denver Intl

Tue 1/20

6:00 am-3:31 pm

1 stop7h 31m

$256

PortlandDenver

PWM - DEN

PWMDEN

Portland

Mon 1/26

11:29 am-9:49 pm

1 stop12h 20m

Denver Intl

Tue 2/3

1:20 pm-5:38 pm

1 stop26h 18m

$258

PortlandDenver

PWM - DEN

PWMDEN

Portland

Sat 1/17

7:00 am-6:13 pm

2 stops13h 13m

Denver Intl

Tue 1/20

10:45 am-11:43 pm

2 stops10h 58m

$261

PortlandDenver

PWM - DEN

PWMDEN

Portland

Mon 1/26

3:58 pm-9:11 pm

1 stop7h 13m

Denver Intl

Tue 2/3

6:00 am-3:31 pm

1 stop7h 31m

$270

PortlandDenver

PWM - DEN

PWMDEN

Portland

Sun 1/11

7:00 am-12:49 pm

1 stop7h 49m

Denver Intl

Sat 1/17

8:44 am-9:37 pm

2 stops10h 53m

$275

PortlandDenver

PWM - DEN

PWMDEN

Portland

Tue 5/5

2:25 pm-9:46 pm

1 stop9h 21m

Denver Intl

Sat 5/9

9:40 am-3:35 pm

Nonstop3h 55m

$279

PortlandDenver

PWM - DEN

PWMDEN

Portland

Mon 1/26

5:20 am-3:16 pm

2 stops11h 56m

Denver Intl

Tue 2/3

10:45 am-10:54 pm

2 stops10h 09m

$280

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Denver from

How to get the cheapest flight ticket from Portland, Maine to Denver

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Denver?

The cheapest month to fly to Denver from Portland, Maine is in January. Flight prices, which tend to average around $372, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in January, then you should wait until April to fly from Portland, Maine, when ticket prices are also cheap, with an average price of $386.

What is the cheapest day to depart on your flight to Denver?

The cheapest day to depart on your flight to Denver is on a Tuesday when prices can be found for as low as $354. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Sunday, with ticket prices averaging around $458.

What is the cheapest time of day to depart on your flight to Denver?

The cheapest time of day to fly to Denver is in the evening when flights can be purchased for as low as $300. Flights in the afternoon are often more expensive with an average ticket price of $416.

What is the cheapest Portland to Denver Intl flight route?

Fly from Portland to Denver Intl for the best Portland - Denver Intl flight prices

How far in advance should I book a flight to Denver?

You are more likely to see cheaper flights to Denver from Portland, Maine when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $442 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Portland, Maine for as low as $382 on momondo.

What cabin class options are available on Portland to Denver Intl flights?

There are 4 cabin classes available to choose from on Portland to Denver Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Portland, Maine to Denver flight prices changed over time?

As of December 2025, prices for Portland, Maine to Denver flights are approximately 83% more expensive when compared to flights at the same time last year.

When to book flights from Portland, Maine to Denver

Are you open to changing your travel dates? Check out the ideal times to fly from Portland, Maine to Denver according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland, Maine to Denver (PWM to DEN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Denver

Best Price Found

$337

Fastest flight time

4h 38m

Direct flights

Tue, Wed, Thu, Fri, Sat and Sun

Airports in Denver

1 airport
The best one-way flight to Denver from Portland, Maine in the past 72 hours is $337. The best round-trip flight deal from Portland, Maine to Denver found on momondo in the last 72 hours is $410.
The fastest flight from Portland, Maine to Denver takes 4h 38m
Direct flights go from Portland, Maine to Denver on Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport in Denver. From Portland, Maine there are direct flights to Denver Intl (DEN).
Search flight deals

  • How far is Portland to Denver Intl by plane?

    There are 1797.3 mi between Portland and Denver Intl. In terms of flight time, this usually takes a little over 4h 38m.

  • When did momondo last update prices for flights from Portland Airport to Denver Intl Airport?

    Prices for flights from Portland Airport to Denver Intl Airport refresh daily.

  • How many operators does momondo search for flights from Portland Airport to Denver Intl Airport?

  • How old do you have to be to fly from Portland Airport to Denver Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Denver Intl Airport.

  • What documentation or ID do you need to fly to Denver Intl Airport?

    The required travel and health documents for your Denver Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Denver Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Portland, Maine to Denver?

  • What is the most popular airline from Portland, Maine to Denver?

Best airlines flying from Portland, Maine to Denver

Compare and see reviews for airlines that fly from Portland, Maine to Denver with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $151Free CancellationRating
5.8
3,082 reviews
Search Frontier flights
JetBluePriceFrom $226Free CancellationRating
7.2
2,895 reviews
Search JetBlue flights
American AirlinesPriceFrom $254Free CancellationRating
7.2
11,053 reviews
Search American Airlines flights
DeltaPriceFrom $256Free CancellationRating
7.9
8,006 reviews
Search Delta flights
SouthwestPriceFrom $292Free CancellationRating
7.9
4,249 reviews
Search Southwest flights
United AirlinesPriceFrom $295Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Breckenridge
Estes Park
Black Hawk
Aurora
Fort Collins
Keystone
Cripple Creek
Manitou Springs
Longmont
Boulder
Greeley
Lakewood
Thornton
Westminster
Winter Park
Copper Mountain
Silverthorne
Frisco
Centennial
Grand Lake

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Denver?

It is quick and easy to find Portland to Denver flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Denver that suits you.

Can I find flights from Portland to Denver with flexible booking policies on momondo?

All flight searches from Portland to Denver on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Portland to Denver?

Once all potential Portland to Denver flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Portland to Denver right now. Can momondo alert me if prices change?

Price alerts on flights to Denver from Portland are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Denver trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 1/17
Sat 1/24
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States