Which airport is the most popular layover for flights between Portland, Maine and Denver?

Washington, D.C. (IAD) was the most common stop: 75% of momondo users choosing 1-stop flights on this route connected there.

How many flights depart from Portland, Maine to Denver on average per week?

As of August 2026, 1 flights take off from Portland, Maine and land in Denver each week. The most common flight departure day for this route is Tue, with 100% of weekly flights taking off on this day.

Which layover airport has the shortest travel time from Portland, Maine to Denver?

Flights connecting via Washington, D.C. (IAD) have the shortest average one-way travel time: 8h 09m.

Which layover airport has the shortest connection time from Portland, Maine to Denver?

Washington, D.C. (IAD) has the shortest average layover time for this route: 1h 48m.

What is the cheapest airline that flies from Portland to Denver Intl?

Southwest, Delta, and JetBlue are the most popular carriers operating from Portland to Denver Intl

What airlines fly to Denver?

United Airlines, JetBlue and Southwest are the top three most popular airlines that fly to Denver from Portland, Maine according to our data. United Airlines is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 6 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

Which layover airport offers the lowest fares from Portland, Maine to Denver?

Flights via New York (JFK) offer the lowest average round-trip price of $452.

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?

As of August 2026, there are 5 operators available to choose from 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.

$118 Cheap Flights from Portland, Maine to Denver in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland, Maine to Denver

Round-trip

One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

5:55 am - 10:20 amPWM Portland-DEN Denver Intl

6h 25m1 stop Baltimore/Washington

5:15 am - 3:00 pmDEN Denver Intl-PWM Portland

7h 45m1 stop Baltimore/Washington

$353Southwest

Thu, Aug 27 - Mon, Aug 31

6:46 am - 4:53 pmPWM Portland-DEN Denver Intl

12h 07m1 stop Chicago O'Hare Intl

5:44 pm - 1:05 pmDEN Denver Intl-PWM Portland

17h 21m1 stop Chicago O'Hare Intl

$355American Airlines

Sat, Sep 5 - Tue, Sep 8

9:08 am - 4:53 pmPWM Portland-DEN Denver Intl

9h 45m1 stop Chicago O'Hare Intl

8:18 am - 11:47 pmDEN Denver Intl-PWM Portland

13h 29m1 stop Chicago O'Hare Intl

$355American Airlines

Wed, Sep 2 - Wed, Sep 16

8:41 pm - 9:19 amPWM Portland-DEN Denver Intl

38h 38m2 stops Norfolk Atlanta Hartsfield-Jackson

11:59 pm - 10:28 amDEN Denver Intl-PWM Portland

8h 29m1 stop Orlando

$356Multiple Airlines

Thu, Sep 3 - Tue, Sep 8

5:08 pm - 9:48 pmPWM Portland-DEN Denver Intl

6h 40m1 stop Chicago O'Hare Intl

6:00 am - 2:16 pmDEN Denver Intl-PWM Portland

6h 16m1 stop Chicago O'Hare Intl

$359United Airlines

Fri, Nov 13 - Sun, Nov 15

7:25 pm - 12:30 amPWM Portland-DEN Denver Intl

7h 05m1 stop Washington, D.C. Dulles Intl

11:59 pm - 9:08 amDEN Denver Intl-PWM Portland

7h 09m1 stop Newark

$359United Airlines

Fri, Oct 2 - Sun, Oct 4

2:53 pm - 10:44 pmPWM Portland-DEN Denver Intl

9h 51m1 stop New York John F Kennedy Intl

6:35 am - 3:39 pmDEN Denver Intl-PWM Portland

7h 04m1 stop New York John F Kennedy Intl

$359Delta

Wed, Sep 2 - Wed, Sep 16

2:53 pm - 10:44 pmPWM Portland-DEN Denver Intl

9h 51m1 stop New York John F Kennedy Intl

12:10 pm - 11:28 pmDEN Denver Intl-PWM Portland

9h 18m1 stop Atlanta Hartsfield-Jackson

$359Delta

Wed, Sep 2 - Tue, Sep 22

5:55 am - 1:05 pmPWM Portland-DEN Denver Intl

9h 10m2 stops Baltimore/Washington Austin Bergstrom

2:30 pm - 10:25 pmDEN Denver Intl-PWM Portland

5h 55m1 stop Baltimore/Washington

$359Southwest

Thu, Aug 27 - Mon, Aug 31

12:03 pm - 3:41 pmPWM Portland-DEN Denver Intl

29h 38m1 stop Minneapolis St Paul

7:10 pm - 4:24 pmDEN Denver Intl-PWM Portland

19h 14m2 stops Atlanta Hartsfield-Jackson Raleigh-Durham

$359Multiple Airlines

Thu, Sep 17 - Mon, Sep 21

Cheap last minute flights

Enter your travel dates to find the best prices.

6:05 am - 12:40 pmPWM Portland-DEN Denver Intl

8h 35m1 stop Atlanta Hartsfield-Jackson

12:00 pm - 9:31 pmDEN Denver Intl-PWM Portland

7h 31m1 stop Atlanta Hartsfield-Jackson

$489Delta

Sat, Aug 15 - Sat, Aug 22

6:05 am - 12:40 pmPWM Portland-DEN Denver Intl

8h 35m1 stop Atlanta Hartsfield-Jackson

12:00 pm - 12:59 amDEN Denver Intl-PWM Portland

10h 59m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl

$494Delta

Sat, Aug 15 - Sat, Aug 22

5:40 am - 1:10 pmPWM Portland-DEN Denver Intl

9h 30m2 stops Baltimore/Washington Kansas City

11:55 pm - 12:45 pmDEN Denver Intl-PWM Portland

10h 50m2 stops Orlando Baltimore/Washington

$543Southwest

Sat, Aug 15 - Sat, Aug 22

5:40 am - 1:10 pmPWM Portland-DEN Denver Intl

9h 30m2 stops Baltimore/Washington Kansas City

8:05 am - 5:15 pmDEN Denver Intl-PWM Portland

7h 10m1 stop Baltimore/Washington

$554Southwest

Sat, Aug 15 - Wed, Aug 19

3:45 pm - 9:11 pmPWM Portland-DEN Denver Intl

7h 26m1 stop Newark

9:53 am - 3:51 pmDEN Denver Intl-PWM Portland

3h 58mnonstop

$604United Airlines

Thu, Aug 13 - Sun, Aug 16

5:03 pm - 11:53 pmPWM Portland-DEN Denver Intl

8h 50m1 stop Chicago O'Hare Intl

9:53 am - 3:51 pmDEN Denver Intl-PWM Portland

3h 58mnonstop

$604United Airlines

Fri, Aug 14 - Mon, Aug 17

7:05 am - 12:30 pmPWM Portland-DEN Denver Intl

7h 25m1 stop Charlotte Douglas

3:13 pm - 11:37 pmDEN Denver Intl-PWM Portland

6h 24m1 stop Philadelphia

$614American Airlines

Sat, Aug 15 - Mon, Aug 17

5:30 am - 11:53 amPWM Portland-DEN Denver Intl

8h 23m1 stop Philadelphia

10:29 am - 9:21 pmDEN Denver Intl-PWM Portland

8h 52m1 stop Philadelphia

$614American Airlines

Thu, Aug 13 - Mon, Aug 17

7:00 am - 3:50 amPWM Portland-DEN Denver Intl

22h 50m2 stops Cincinnati Cinci./N. Kentucky Las Vegas Harry Reid Intl

9:15 am - 11:44 amDEN Denver Intl-PWM Portland

24h 29m1 stop Minneapolis St Paul

$652Multiple Airlines

Fri, Aug 14 - Sun, Aug 16

7:00 am - 9:44 pmPWM Portland-DEN Denver Intl

16h 44m1 stop Cincinnati Cinci./N. Kentucky

9:15 am - 11:44 amDEN Denver Intl-PWM Portland

24h 29m1 stop Minneapolis St Paul

$652Multiple Airlines

Fri, Aug 14 - Sun, Aug 16

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United Airlines flights from Portland, Maine to Denver

Our best United Airlines deals on Portland, Maine to Denver flight tickets

United Airlines

Sep 3

PWM10:45 amPortland

8h 08m

1 stop

DEN4:53 pmDenver Intl

Sep 12

DEN6:00 amDenver Intl

5h 55m

1 stop

PWM1:55 pmPortland

$359

United Airlines

Oct 21

PWM3:45 pmPortland

4h 33m

DEN6:18 pmDenver Intl

Oct 28

DEN10:11 amDenver Intl

3h 51m

PWM4:02 pmPortland

$365

United Airlines

Oct 2

PWM3:40 pmPortland

4h 33m

DEN6:13 pmDenver Intl

Oct 13

DEN11:59 pmDenver Intl

7h 09m

1 stop

PWM9:08 amPortland

$366

Delta flights from Portland, Maine to Denver

Our best Delta deals on Portland, Maine to Denver flight tickets

Delta

Sep 2

PWM2:53 pmPortland

9h 51m

1 stop

DEN10:44 pmDenver Intl

Sep 16

DEN10:55 amDenver Intl

11h 01m

2 stops

PWM11:56 pmPortland

$364

Delta

Sep 2

PWM6:30 amPortland

9h 15m

2 stops

DEN1:45 pmDenver Intl

Sep 16

DEN10:55 amDenver Intl

11h 01m

2 stops

PWM11:56 pmPortland

$369

Delta

Sep 3

PWM2:14 pmPortland

11h 20m

2 stops

DEN11:34 pmDenver Intl

Sep 11

DEN10:45 amDenver Intl

11h 11m

2 stops

PWM11:56 pmPortland

$370

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandDenver

PWM Portland - DEN Denver Intl

PWMDEN

Portland

Thu 8/27

5:55 am-10:20 am

1 stop6h 25m

Denver Intl

Mon 8/31

5:15 am-3:00 pm

1 stop7h 45m

$353

PortlandDenver

PWM Portland - DEN Denver Intl

PWMDEN

Portland

Sat 9/5

6:46 am-4:53 pm

1 stop12h 07m

Denver Intl

Tue 9/8

5:44 pm-1:05 pm

1 stop17h 21m

$355

PortlandDenver

PWM Portland - DEN Denver Intl

PWMDEN

Portland

Wed 9/2

9:08 am-4:53 pm

1 stop9h 45m

Denver Intl

Wed 9/16

8:18 am-11:47 pm

1 stop13h 29m

$355

PortlandDenver

PWM Portland - DEN Denver Intl

PWMDEN

Portland

Thu 9/3

8:41 pm-9:19 am

2 stops38h 38m

Denver Intl

Tue 9/8

11:59 pm-10:28 am

1 stop8h 29m

$356

Quickest round-trip

PortlandDenver

PWM Portland - DEN Denver Intl

PWMDEN

Portland

Fri 11/13

5:08 pm-9:48 pm

1 stop6h 40m

Denver Intl

Sun 11/15

6:00 am-2:16 pm

1 stop6h 16m

$359

PortlandDenver

PWM Portland - DEN Denver Intl

PWMDEN

Portland

Fri 10/2

7:25 pm-12:30 am

1 stop7h 05m

Denver Intl

Sun 10/4

11:59 pm-9:08 am

1 stop7h 09m

$359

PortlandDenver

PWM Portland - DEN Denver Intl

PWMDEN

Portland

Wed 9/2

2:53 pm-10:44 pm

1 stop9h 51m

Denver Intl

Wed 9/16

6:35 am-3:39 pm

1 stop7h 04m

$359

PortlandDenver

PWM Portland - DEN Denver Intl

PWMDEN

Portland

Wed 9/2

2:53 pm-10:44 pm

1 stop9h 51m

Denver Intl

Tue 9/22

12:10 pm-11:28 pm

1 stop9h 18m

$359

PortlandDenver

PWM Portland - DEN Denver Intl

PWMDEN

Portland

Thu 8/27

5:55 am-1:05 pm

2 stops9h 10m

Denver Intl

Mon 8/31

2:30 pm-10:25 pm

1 stop5h 55m

$359

PortlandDenver

PWM Portland - DEN Denver Intl

PWMDEN

Portland

Thu 9/17

12:03 pm-3:41 pm

1 stop29h 38m

Denver Intl

Mon 9/21

7:10 pm-4:24 pm

2 stops19h 14m

$359

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Layovers

Other information

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

Prices are currently low for flights on this route.

Typical prices usually range from $384 to $607.
The lowest price recently found on this route was $353.

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 $380, 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 November to fly from Portland, Maine, when ticket prices are also cheap, with an average price of $384.

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 $502. 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 $925.

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 from Portland, Maine 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 $461 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 $419 on momondo.

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

There are 4 cabin classes available to choose from on Portland, Maine to Denver 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 August 2026, prices for Portland, Maine to Denver flights are approximately 9% cheaper 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	$289
Fastest flight time	4h 33m
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 $289. The best round-trip flight deal from Portland, Maine to Denver found on momondo in the last 72 hours is $482.

The fastest flight from Portland, Maine to Denver takes 4h 33m

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

Frequently asked questions about flying from Portland, Maine to Denver

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 33m.
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?
As of August 2026, there are 5 operators available to choose from 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?
momondo data reveals that the most frequently booked plane model on the route from Portland, Maine to Denver is Boeing 737 MAX 8, representing 75.15% of all bookings. The subsequent popular models are Boeing 737-800 at 8.48%, Boeing 737 MAX 9 at 4.24%, and Boeing 737 at 3.03%.
What is the most popular airline from Portland, Maine to Denver?
Based on momondo bookings for flights between Portland, Maine and Denver, the leading airline is United Airlines, making up 59% of the total bookings. Other popular airlines include American Airlines with 21%, Southwest with 12%, and Delta with 5%.

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
JetBlue	PriceFrom $156	Free Cancellation	Rating 7.1 3,035 reviews	Search JetBlue flights
American Airlines	PriceFrom $269	Free Cancellation	Rating 7.1 11,915 reviews	Search American Airlines flights
Delta	PriceFrom $288	Free Cancellation	Rating 7.8 8,505 reviews	Search Delta flights
United Airlines	PriceFrom $294	Free Cancellation	Rating 7.4 10,115 reviews	Search United Airlines flights
Southwest	PriceFrom $322	Free Cancellation	Rating 8.0 4,218 reviews	Search Southwest 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 $484, but momondo users have found United Airlines deals from Portland, Maine to Denver from as low as $294 round-trip. United Airlines has been scored 7.4/10 in 10,115 reviews.

Breckenridge

Estes Park

Black Hawk

Aurora

Fort Collins

Boulder

Westminster

Longmont

Manitou Springs

Lakewood

Greeley

Keystone

Thornton

Cripple Creek

Centennial

Littleton

Englewood

Frisco

Winter Park

Golden

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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Airports servicing Colorado

Alamosa Airport

Aspen Pitkin County Airport

Cortez Montezuma County Airport

Colorado Springs Airport

Durango La Plata County Airport

Vail Eagle County Airport

Grand Junction Regnl Airport

Gunnison Airport

Hayden Yampa Valley Airport

Montrose County Airport

Telluride Airport

Cheap flights from Portland, Maine to Denver from $118

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 11/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from Portland, Maine to Denver

Our best United Airlines deals on Portland, Maine to Denver flight tickets

Delta flights from Portland, Maine to Denver

Our best Delta deals on Portland, Maine to Denver flight tickets

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

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

What is the cheapest month to fly to Denver?

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

What is the cheapest Portland to Denver Intl flight route?

How far in advance should I book a flight from Portland, Maine to Denver?

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

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

What is the cheapest airline that flies from Portland to Denver Intl?

What airlines fly to Denver?

Which airport is the most popular layover for flights between Portland, Maine and Denver?

Which layover airport offers the lowest fares from Portland, Maine to Denver?

Which layover airport has the shortest travel time from Portland, Maine to Denver?

Which layover airport has the shortest connection time from Portland, Maine to Denver?

How many flights depart from Portland, Maine to Denver on average per week?

When to book flights from Portland, Maine to Denver

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

Best Price Found

Fastest flight time

Direct flights

Airports in Denver

Frequently asked questions about flying 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

Traveling to a place near Denver?

Why use momondo?

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Colorado

Fly your favorite airline to Denver

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Denver

List of cabin classes available on flights landing in Denver. Availability may vary depending on flight origin and airline.

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo

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According to popular flight searches on momondo this year

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