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Cheap flights from Portland, Maine to Denver from $115

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 5/12. 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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Cheap round-trip flights

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Multiple Airlines Logo
5:01 pm - 2:32 pm
PWM
-
DEN
23h 31m
1 stop
Multiple Airlines Logo
6:03 am - 4:16 pm
DEN
-
PWM
8h 13m
1 stop
$280Multiple Airlines
Wed, May 6 - Sat, May 16
Multiple Airlines Logo
5:01 pm - 2:32 pm
PWM
-
DEN
23h 31m
1 stop
Multiple Airlines Logo
11:59 pm - 4:16 pm
DEN
-
PWM
14h 17m
2 stops
$283Multiple Airlines
Wed, May 6 - Tue, May 12
Southwest Logo
4:50 pm - 9:30 pm
PWM
-
DEN
6h 40m
1 stop
Southwest Logo
11:05 am - 10:35 pm
DEN
-
PWM
9h 30m
2 stops
$284Southwest
Mon, Apr 13 - Wed, Apr 15
JetBlue Logo
2:37 pm - 10:46 pm
PWM
-
DEN
10h 09m
1 stop
JetBlue Logo
2:29 pm - 11:57 pm
DEN
-
PWM
7h 28m
1 stop
$285JetBlue
Tue, Jun 9 - Wed, Jun 17
Southwest Logo
2:50 pm - 11:00 pm
PWM
-
DEN
10h 10m
2 stops
Southwest Logo
10:55 am - 10:35 pm
DEN
-
PWM
9h 40m
2 stops
$289Southwest
Mon, Apr 13 - Wed, Apr 15
Southwest Logo
4:50 pm - 9:30 pm
PWM
-
DEN
6h 40m
1 stop
Southwest Logo
5:45 am - 2:10 pm
DEN
-
PWM
6h 25m
1 stop
$301Southwest
Mon, Apr 13 - Thu, Apr 16
Southwest Logo
4:50 pm - 9:30 pm
PWM
-
DEN
6h 40m
1 stop
Southwest Logo
10:55 am - 10:35 pm
DEN
-
PWM
9h 40m
2 stops
$305Southwest
Mon, Apr 13 - Wed, Apr 15
Delta Logo
2:38 pm - 6:47 pm
PWM
-
DEN
30h 09m
1 stop
Delta Logo
11:50 pm - 12:43 am
DEN
-
PWM
22h 53m
1 stop
$309Delta
Tue, May 12 - Tue, May 19
Southwest Logo
2:50 pm - 11:00 pm
PWM
-
DEN
10h 10m
2 stops
Southwest Logo
10:55 am - 10:35 pm
DEN
-
PWM
9h 40m
2 stops
$310Southwest
Mon, Apr 13 - Wed, Apr 15
Delta Logo
4:48 pm - 6:47 pm
PWM
-
DEN
27h 59m
2 stops
Delta Logo
11:50 pm - 12:43 am
DEN
-
PWM
22h 53m
1 stop
$314Delta
Tue, May 12 - Tue, May 19

United Airlines flights from Portland, Maine to Denver

Our best United Airlines deals on Portland, Maine to Denver flight tickets
United Airlines
May 7
PWM3:23 pmPortland
4h 39m
DEN6:02 pmDenver Intl
May 10
DEN9:45 amDenver Intl
3h 56m
PWM3:41 pmPortland
$329
United Airlines
May 6
PWM3:23 pmPortland
4h 39m
DEN6:02 pmDenver Intl
May 12
DEN3:52 pmDenver Intl
6h 07m
1 stop
PWM11:59 pmPortland
$339
United Airlines
May 23
PWM3:32 pmPortland
4h 39m
DEN6:11 pmDenver Intl
May 26
DEN11:59 pmDenver Intl
7h 12m
1 stop
PWM9:11 amPortland
$358

JetBlue flights from Portland, Maine to Denver

Our best JetBlue deals on Portland, Maine to Denver flight tickets
JetBlue
Jun 9
PWM2:37 pmPortland
10h 09m
1 stop
DEN10:46 pmDenver Intl
Jun 17
DEN2:29 pmDenver Intl
7h 28m
1 stop
PWM11:57 pmPortland
$285
JetBlue
Jun 23
PWM2:25 pmPortland
10h 30m
1 stop
DEN10:55 pmDenver Intl
Jun 30
DEN2:29 pmDenver Intl
7h 28m
1 stop
PWM11:57 pmPortland
$361

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 March 27, 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

Cheapest round-trip

PortlandDenver

PWM - DEN

PWMDEN

Portland

Wed 5/6

5:01 pm-2:32 pm

1 stop23h 31m

Denver Intl

Sat 5/16

6:03 am-4:16 pm

1 stop8h 13m

$280

PortlandDenver

PWM - DEN

PWMDEN

Portland

Wed 5/6

5:01 pm-2:32 pm

1 stop23h 31m

Denver Intl

Tue 5/12

11:59 pm-4:16 pm

2 stops14h 17m

$283

PortlandDenver

PWM - DEN

PWMDEN

Portland

Mon 4/13

4:50 pm-9:30 pm

1 stop6h 40m

Denver Intl

Wed 4/15

11:05 am-10:35 pm

2 stops9h 30m

$284

PortlandDenver

PWM - DEN

PWMDEN

Portland

Tue 6/9

2:37 pm-10:46 pm

1 stop10h 09m

Denver Intl

Wed 6/17

2:29 pm-11:57 pm

1 stop7h 28m

$285

PortlandDenver

PWM - DEN

PWMDEN

Portland

Mon 4/13

2:50 pm-11:00 pm

2 stops10h 10m

Denver Intl

Wed 4/15

10:55 am-10:35 pm

2 stops9h 40m

$289
Quickest round-trip

PortlandDenver

PWM - DEN

PWMDEN

Portland

Mon 4/13

4:50 pm-9:30 pm

1 stop6h 40m

Denver Intl

Thu 4/16

5:45 am-2:10 pm

1 stop6h 25m

$301

PortlandDenver

PWM - DEN

PWMDEN

Portland

Mon 4/13

4:50 pm-9:30 pm

1 stop6h 40m

Denver Intl

Wed 4/15

10:55 am-10:35 pm

2 stops9h 40m

$305

PortlandDenver

PWM - DEN

PWMDEN

Portland

Tue 5/12

2:38 pm-6:47 pm

1 stop30h 09m

Denver Intl

Tue 5/19

11:50 pm-12:43 am

1 stop22h 53m

$309

PortlandDenver

PWM - DEN

PWMDEN

Portland

Mon 4/13

2:50 pm-11:00 pm

2 stops10h 10m

Denver Intl

Wed 4/15

10:55 am-10:35 pm

2 stops9h 40m

$310

PortlandDenver

PWM - DEN

PWMDEN

Portland

Tue 5/12

4:48 pm-6:47 pm

2 stops27h 59m

Denver Intl

Tue 5/19

11:50 pm-12:43 am

1 stop22h 53m

$314

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 typical price of a round-trip flight between Portland, Maine and Denver?

What is the cheapest month to fly to Denver?

The cheapest month to fly to Denver from Portland, Maine is in February. Flight prices, which tend to average around $374, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in February, then you should wait until April to fly from Portland, Maine, when ticket prices are also cheap, with an average price of $392.

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 $495. 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 $736.

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 $555. 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 $445 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 $376 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 March 2026, prices for Portland, Maine to Denver flights are approximately 5% 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

$273

Fastest flight time

4h 37m

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 $273. The best round-trip flight deal from Portland, Maine to Denver found on momondo in the last 72 hours is $452.
The fastest flight from Portland, Maine to Denver takes 4h 37m
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 37m.

  • 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
DeltaPriceFrom $238Free CancellationRating
7.9
8,341 reviews
Search Delta flights
American AirlinesPriceFrom $253Free CancellationRating
7.1
11,504 reviews
Search American Airlines flights
SouthwestPriceFrom $272Free CancellationRating
8.0
4,331 reviews
Search Southwest flights
United AirlinesPriceFrom $291Free CancellationRating
7.4
9,491 reviews
Search United Airlines flights

  • United Airlines Flights From Portland, Maine to Denver

    United Airlines operates around 1 flight from Portland, Maine to Denver every week. The average price of these flights found in the last 72 hours has been $509, but momondo users have found United Airlines deals from Portland, Maine to Denver from as low as $291 round-trip. United Airlines has been scored 7.4/10 in 9,491 reviews.

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
Boulder
Greeley
Keystone
Cripple Creek
Lakewood
Westminster
Thornton
Frisco
Grand Lake
Winter Park
Centennial
Englewood
Copper Mountain

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

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