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Cheap flights from Portland, Maine to Denver from $103

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 2/28. 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

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Find the cheapest flights from Portland, Maine to Denver

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:00 am - 11:25 am
PWM
-
DEN
7h 25m
1 stop
American Airlines Logo
2:22 pm - 10:41 pm
DEN
-
PWM
6h 19m
1 stop
$197American Airlines
Fri, May 29 - Tue, Jun 2
American Airlines Logo
5:40 pm - 10:37 pm
PWM
-
DEN
6h 57m
1 stop
American Airlines Logo
8:00 am - 5:07 pm
DEN
-
PWM
7h 07m
1 stop
$204American Airlines
Wed, Feb 25 - Wed, Mar 4
American Airlines Logo
5:40 pm - 10:37 pm
PWM
-
DEN
6h 57m
1 stop
American Airlines Logo
9:22 am - 5:07 pm
DEN
-
PWM
5h 45m
1 stop
$205American Airlines
Fri, Feb 27 - Wed, Mar 4
Delta Logo
5:31 am - 12:05 pm
PWM
-
DEN
8h 34m
1 stop
Delta Logo
7:05 am - 5:14 pm
DEN
-
PWM
8h 09m
1 stop
$237Delta
Tue, Feb 24 - Tue, Mar 3
American Airlines Logo
5:40 pm - 10:37 pm
PWM
-
DEN
6h 57m
1 stop
American Airlines Logo
2:20 pm - 10:59 pm
DEN
-
PWM
6h 39m
1 stop
$251American Airlines
Wed, Feb 25 - Wed, Mar 4
American Airlines Logo
5:40 pm - 10:37 pm
PWM
-
DEN
6h 57m
1 stop
American Airlines Logo
7:05 am - 6:04 pm
DEN
-
PWM
8h 59m
1 stop
$265American Airlines
Wed, Mar 4 - Wed, Mar 11
United Airlines Logo
3:23 pm - 6:02 pm
PWM
-
DEN
4h 39mnonstop
United Airlines Logo
7:50 am - 7:04 pm
DEN
-
PWM
9h 14m
1 stop
$269United Airlines
Fri, May 1 - Wed, May 6
American Airlines Logo
5:40 pm - 10:37 pm
PWM
-
DEN
6h 57m
1 stop
American Airlines Logo
2:20 pm - 10:59 pm
DEN
-
PWM
6h 39m
1 stop
$270American Airlines
Fri, Feb 27 - Wed, Mar 4
JetBlue Logo
2:18 pm - 11:01 pm
PWM
-
DEN
10h 43m
1 stop
JetBlue Logo
11:05 am - 11:36 pm
DEN
-
PWM
10h 31m
1 stop
$272JetBlue
Tue, Jun 2 - Tue, Jun 9
Delta Logo
5:23 am - 1:34 pm
PWM
-
DEN
10h 11m
1 stop
Delta Logo
6:10 am - 4:06 pm
DEN
-
PWM
7h 56m
1 stop
$278Delta
Mon, Mar 23 - Tue, Mar 31

American Airlines flights from Portland, Maine to Denver

Our best American Airlines deals on Portland, Maine to Denver flight tickets
American Airlines
May 29
PWM6:00 amPortland
7h 25m
1 stop
DEN11:25 amDenver Intl
Jun 2
DEN2:22 pmDenver Intl
6h 19m
1 stop
PWM10:41 pmPortland
$197
American Airlines
Feb 25
PWM5:40 pmPortland
6h 57m
1 stop
DEN10:37 pmDenver Intl
Mar 4
DEN8:00 amDenver Intl
7h 07m
1 stop
PWM5:07 pmPortland
$204
American Airlines
Feb 27
PWM5:40 pmPortland
6h 57m
1 stop
DEN10:37 pmDenver Intl
Mar 4
DEN9:22 amDenver Intl
5h 45m
1 stop
PWM5:07 pmPortland
$205

Delta flights from Portland, Maine to Denver

Our best Delta deals on Portland, Maine to Denver flight tickets
Delta
Feb 24
PWM5:31 amPortland
8h 34m
1 stop
DEN12:05 pmDenver Intl
Mar 3
DEN7:05 amDenver Intl
8h 09m
1 stop
PWM5:14 pmPortland
$237
Delta
Mar 23
PWM5:23 amPortland
10h 11m
1 stop
DEN1:34 pmDenver Intl
Mar 31
DEN6:10 amDenver Intl
7h 56m
1 stop
PWM4:06 pmPortland
$278
Delta
Apr 2
PWM5:23 amPortland
10h 11m
1 stop
DEN1:34 pmDenver Intl
Apr 7
DEN12:51 pmDenver Intl
9h 08m
1 stop
PWM11:59 pmPortland
$299

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 February 6, 2026.
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

Fri 5/29

6:00 am-11:25 am

1 stop7h 25m

Denver Intl

Tue 6/2

2:22 pm-10:41 pm

1 stop6h 19m

$197

PortlandDenver

PWM - DEN

PWMDEN

Portland

Wed 2/25

5:40 pm-10:37 pm

1 stop6h 57m

Denver Intl

Wed 3/4

8:00 am-5:07 pm

1 stop7h 07m

$204

PortlandDenver

PWM - DEN

PWMDEN

Portland

Fri 2/27

5:40 pm-10:37 pm

1 stop6h 57m

Denver Intl

Wed 3/4

9:22 am-5:07 pm

1 stop5h 45m

$205

PortlandDenver

PWM - DEN

PWMDEN

Portland

Tue 2/24

5:31 am-12:05 pm

1 stop8h 34m

Denver Intl

Tue 3/3

7:05 am-5:14 pm

1 stop8h 09m

$237

PortlandDenver

PWM - DEN

PWMDEN

Portland

Wed 2/25

5:40 pm-10:37 pm

1 stop6h 57m

Denver Intl

Wed 3/4

2:20 pm-10:59 pm

1 stop6h 39m

$251

PortlandDenver

PWM - DEN

PWMDEN

Portland

Wed 3/4

5:40 pm-10:37 pm

1 stop6h 57m

Denver Intl

Wed 3/11

7:05 am-6:04 pm

1 stop8h 59m

$265

PortlandDenver

PWM - DEN

PWMDEN

Portland

Fri 5/1

3:23 pm-6:02 pm

Nonstop4h 39m

Denver Intl

Wed 5/6

7:50 am-7:04 pm

1 stop9h 14m

$269

PortlandDenver

PWM - DEN

PWMDEN

Portland

Fri 2/27

5:40 pm-10:37 pm

1 stop6h 57m

Denver Intl

Wed 3/4

2:20 pm-10:59 pm

1 stop6h 39m

$270

PortlandDenver

PWM - DEN

PWMDEN

Portland

Tue 6/2

2:18 pm-11:01 pm

1 stop10h 43m

Denver Intl

Tue 6/9

11:05 am-11:36 pm

1 stop10h 31m

$272

PortlandDenver

PWM - DEN

PWMDEN

Portland

Mon 3/23

5:23 am-1:34 pm

1 stop10h 11m

Denver Intl

Tue 3/31

6:10 am-4:06 pm

1 stop7h 56m

$278

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 October. Flight prices, which tend to average around $399, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in October, then you should wait until November to fly from Portland, Maine, when ticket prices are also cheap, with an average price of $399.

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 Friday when prices can be found for as low as $497. 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 $762.

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 afternoon when flights can be purchased for as low as $572. Flights in the morning are often more expensive with an average ticket price of $762.

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 $440 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 $404 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 February 2026, prices for Portland, Maine to Denver flights are approximately 42% 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

$191

Fastest flight time

4h 39m

Direct flights

Every day

Airports in Denver

1 airport
The best one-way flight to Denver from Portland, Maine in the past 72 hours is $191. The best round-trip flight deal from Portland, Maine to Denver found on momondo in the last 72 hours is $487.
The fastest flight from Portland, Maine to Denver takes 4h 39m
Direct flights go from Portland, Maine to Denver every day.
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 39m.

  • 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 $87Free CancellationRating
5.7
3,053 reviews
Search Frontier flights
JetBluePriceFrom $226Free CancellationRating
7.2
2,894 reviews
Search JetBlue flights
American AirlinesPriceFrom $256Free CancellationRating
7.2
11,237 reviews
Search American Airlines flights
DeltaPriceFrom $256Free CancellationRating
7.9
8,151 reviews
Search Delta flights
SouthwestPriceFrom $288Free CancellationRating
8.0
4,275 reviews
Search Southwest flights
United AirlinesPriceFrom $294Free CancellationRating
7.4
9,241 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
Manitou Springs
Longmont
Cripple Creek
Boulder
Keystone
Greeley
Lakewood
Westminster
Thornton
Frisco
Copper Mountain
Winter Park
Centennial
Englewood
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.
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