How long does it take to fly to Portland, Maine?

The flight from Colorado to Portland, Maine depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Denver (a popular airport in Colorado) to Boston (the most popular airport in Portland, Maine), then the flight time is 3h 48m on average. If you fly from Colorado Springs (another popular airport in Colorado) to Boston, then the average flight time is 5h 30m.

What airlines fly to Portland, Maine?

United Airlines, JetBlue and Delta are the top three most popular airlines that fly to Portland, Maine from Colorado according to our data. United Airlines is the first choice among our users, with 49% of people opting to fly with this airline when traveling to Portland, Maine. Keep in mind that there are 6 different airlines that fly to Portland, Maine on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Colorado to Portland?

United Airlines, Delta, and JetBlue are the most popular carriers operating from Colorado to Portland

When did momondo last update prices for flights from Colorado to Portland Airport?

Prices for flights from Colorado to Portland Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Colorado to Portland Airport?

The number of operators available for flights from Colorado to Portland Airport is 5 as of March 2026.

How old do you have to be to fly from Colorado to Portland Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Colorado to Portland Airport.

What documentation or ID do you need to fly to Portland Airport?

The required travel and health documents for your Portland 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 Portland Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$118 Cheap Flights from Colorado to Portland in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

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

Trusted and free

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

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Colorado to Portland

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:04 pm - 11:57 pm

DEN

PWM

6h 53m

1 stop

6:00 am - 1:24 pm

PWM

DEN

9h 24m

1 stop

$285JetBlue

Wed, Aug 26 - Wed, Sep 2

5:41 am - 6:38 pm

COS

PWM

10h 57m

2 stops

7:07 am - 11:52 am

PWM

COS

6h 45m

1 stop

$301American Airlines

Tue, Apr 21 - Tue, Apr 28

11:43 am - 11:59 pm

COS

PWM

10h 16m

2 stops

3:23 pm - 8:01 pm

PWM

COS

6h 38m

1 stop

$320United Airlines

Mon, May 4 - Wed, May 6

2:29 pm - 11:57 pm

DEN

PWM

7h 28m

1 stop

6:00 am - 1:24 pm

PWM

DEN

9h 24m

1 stop

$321JetBlue

Tue, Aug 4 - Wed, Aug 19

1:40 pm - 10:33 pm

COS

PWM

6h 53m

1 stop

6:00 am - 12:48 pm

PWM

COS

8h 48m

1 stop

$323Delta

Tue, Aug 18 - Fri, Aug 21

2:25 pm - 11:14 pm

COS

PWM

6h 49m

1 stop

1:35 pm - 9:15 pm

PWM

COS

9h 40m

1 stop

$326Delta

Wed, Aug 5 - Wed, Aug 12

9:45 am - 3:41 pm

DEN

PWM

3h 56mnonstop

3:23 pm - 6:02 pm

PWM

DEN

4h 39mnonstop

$329United Airlines

Sat, May 9 - Tue, May 12

6:03 am - 4:16 pm

DEN

PWM

8h 13m

1 stop

5:01 pm - 2:32 pm

PWM

DEN

23h 31m

1 stop

$333Multiple Airlines

Sat, May 9 - Sat, May 16

1:20 pm - 12:05 am

DEN

PWM

8h 45m

2 stops

5:35 am - 11:25 am

PWM

DEN

7h 50m

1 stop

$342Southwest

Thu, Jun 4 - Mon, Jun 8

5:45 am - 4:15 pm

DEN

PWM

8h 30m

1 stop

3:55 pm - 9:30 pm

PWM

DEN

7h 35m

1 stop

$344Southwest

Thu, May 7 - Tue, May 12

United Airlines flights from Colorado to Portland, Maine

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

United Airlines

May 4

COS11:43 amColorado Springs

10h 16m

2 stops

PWM11:59 pmPortland

May 6

PWM3:23 pmPortland

6h 38m

1 stop

COS8:01 pmColorado Springs

$320

United Airlines

May 9

DEN9:45 amDenver Intl

3h 56m

PWM3:41 pmPortland

May 12

PWM3:23 pmPortland

4h 39m

DEN6:02 pmDenver Intl

$329

United Airlines

May 9

DEN9:45 amDenver Intl

3h 56m

PWM3:41 pmPortland

May 12

PWM5:30 amPortland

8h 30m

1 stop

DEN12:00 pmDenver Intl

$339

Southwest flights from Colorado to Portland, Maine

Our best Southwest deals on Colorado to Portland, Maine flight tickets

Southwest

May 7

DEN5:45 amDenver Intl

8h 30m

1 stop

PWM4:15 pmPortland

May 12

PWM3:55 pmPortland

7h 35m

1 stop

DEN9:30 pmDenver Intl

$344

Southwest

Apr 15

DEN11:55 pmDenver Intl

12h 15m

1 stop

PWM2:10 pmPortland

Apr 21

PWM1:00 pmPortland

8h 10m

1 stop

DEN7:10 pmDenver Intl

$350

Southwest

Aug 4

DEN5:50 amDenver Intl

6h 25m

1 stop

PWM2:15 pmPortland

Aug 19

PWM5:45 amPortland

11h 05m

2 stops

DEN2:50 pmDenver Intl

$354

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Wed 8/26

3:04 pm-11:57 pm

1 stop6h 53m

Portland

Wed 9/2

6:00 am-1:24 pm

1 stop9h 24m

$285

Colorado SpringsPortland

COS - PWM

COSPWM

Colorado Springs

Tue 4/21

5:41 am-6:38 pm

2 stops10h 57m

Portland

Tue 4/28

7:07 am-11:52 am

1 stop6h 45m

$301

Colorado SpringsPortland

COS - PWM

COSPWM

Colorado Springs

Mon 5/4

11:43 am-11:59 pm

2 stops10h 16m

Portland

Wed 5/6

3:23 pm-8:01 pm

1 stop6h 38m

$320

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Tue 8/4

2:29 pm-11:57 pm

1 stop7h 28m

Portland

Wed 8/19

6:00 am-1:24 pm

1 stop9h 24m

$321

Colorado SpringsPortland

COS - PWM

COSPWM

Colorado Springs

Tue 8/18

1:40 pm-10:33 pm

1 stop6h 53m

Portland

Fri 8/21

6:00 am-12:48 pm

1 stop8h 48m

$323

Colorado SpringsPortland

COS - PWM

COSPWM

Colorado Springs

Wed 8/5

2:25 pm-11:14 pm

1 stop6h 49m

Portland

Wed 8/12

1:35 pm-9:15 pm

1 stop9h 40m

$326

Quickest round-trip

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Sat 5/9

9:45 am-3:41 pm

Nonstop3h 56m

Portland

Tue 5/12

3:23 pm-6:02 pm

Nonstop4h 39m

$329

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Sat 5/9

6:03 am-4:16 pm

1 stop8h 13m

Portland

Sat 5/16

5:01 pm-2:32 pm

1 stop23h 31m

$333

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Thu 6/4

1:20 pm-12:05 am

2 stops8h 45m

Portland

Mon 6/8

5:35 am-11:25 am

1 stop7h 50m

$342

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Thu 5/7

5:45 am-4:15 pm

1 stop8h 30m

Portland

Tue 5/12

3:55 pm-9:30 pm

1 stop7h 35m

$344

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 Colorado to Portland, Maine

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

Other information

What is the cheapest month to fly to Portland, Maine?

The cheapest month to fly to Portland, Maine from Colorado is in January. Flight prices, which tend to average around $363, are often lower during this time because this is during the off-season. If you aren’t able to travel to Portland, Maine during the month of January, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $374.

What is the cheapest day to depart on your flight to Portland, Maine?

On average, the least expensive day to fly to Portland, Maine from Colorado is on a Friday. momondo users have found tickets for Friday departures for as low as $559. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Colorado because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $717.

What is the cheapest time of day to depart on your flight to Portland, Maine?

In the afternoon is the cheapest time of day to fly from Colorado to Portland, Maine when you can find flight prices for as low as $483. Flying to Portland, Maine in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $581. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Colorado to Portland flight route?

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

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

You are more likely to see cheaper flights to Portland, Maine from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland, Maine for around $442 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland, Maine from Colorado for as low as $368 on momondo.

What cabin class options are available on Colorado to Portland flights?

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

Can stopping save me money on Colorado to Portland, Maine flights?

You could potentially save up to 13% on your flight if you consider stops on a Colorado to Portland, Maine flight.

Cheap Colorado to Portland, Maine flight deals and tips

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

Best Price Found	$371
Fastest flight time	3h 55m
Direct flights	Every day
Airports in Portland, Maine	1 airport

The best one-way flight to Portland, Maine from Colorado in the past 72 hours is $371. The best round-trip flight deal from Colorado to Portland, Maine found on momondo in the last 72 hours is $528.

The fastest flight from Colorado to Portland, Maine takes 3h 55m

Direct flights go from Colorado to Portland, Maine every day.

There is 1 airport in Portland, Maine. From Colorado there are direct flights to Portland (PWM).

Search flight deals

When did momondo last update prices for flights from Colorado to Portland Airport?
Prices for flights from Colorado to Portland Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Colorado to Portland Airport?
The number of operators available for flights from Colorado to Portland Airport is 5 as of March 2026.
How old do you have to be to fly from Colorado to Portland Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Colorado to Portland Airport.
What documentation or ID do you need to fly to Portland Airport?
The required travel and health documents for your Portland 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 Portland 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 Colorado to Portland, Maine?
momondo data reveals that the most frequently booked plane model on the route from Colorado to Portland, Maine is Boeing 737 MAX 8, representing 48.39% of all bookings. The subsequent popular models are Boeing 737-800 at 11.29%, Boeing 737-700 at 9.68%, and Boeing 737-900 at 6.45%.

Best airlines flying from Colorado to Portland, Maine

Compare and see reviews for airlines that fly from Colorado to Portland, Maine with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $129	Free Cancellation	Rating 5.7 3,015 reviews	Search Frontier flights
American Airlines	PriceFrom $192	Free Cancellation	Rating 7.1 11,495 reviews	Search American Airlines flights
Delta	PriceFrom $192	Free Cancellation	Rating 7.9 8,331 reviews	Search Delta flights
Southwest	PriceFrom $258	Free Cancellation	Rating 8.0 4,333 reviews	Search Southwest flights
United Airlines	PriceFrom $288	Free Cancellation	Rating 7.4 9,484 reviews	Search United Airlines flights

North Conway

Boothbay Harbor

Jackson

Conway

Freeport

Lewiston

Brunswick

Bartlett

Gorham

Auburn

Windham

Intervale

Oxford

Bath

Georgetown

Falmouth

Tamworth

Why use momondo?

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

It is quick and easy to find Colorado to Portland 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 Portland that suits you.

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

momondo does allow users to show only those flights to Portland from Colorado which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential Colorado to Portland 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 Colorado to Portland right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Colorado to Portland now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Portland and let you know when they change.

An easier way to manage your Portland, Maine 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 4/25

Sat 5/2

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Nearby airports

Airlines

Cabin classes

Other United States destinations

Other flights from Colorado

Complete your trip

Feeling lucky

Airports servicing Maine

Rockland Knox County Regional Airport

Cheap flights from Colorado to Portland 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 Colorado to Portland departing on 5/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Colorado to Portland

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

United Airlines flights from Colorado to Portland, Maine

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

Southwest flights from Colorado to Portland, Maine

Our best Southwest deals on Colorado to Portland, Maine flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Colorado to Portland, Maine that are best for you.

See travel insights to Portland from

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

What is the cheapest month to fly to Portland, Maine?

What is the cheapest day to depart on your flight to Portland, Maine?

What is the cheapest time of day to depart on your flight to Portland, Maine?

What is the cheapest Colorado to Portland flight route?

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

What cabin class options are available on Colorado to Portland flights?

Can stopping save me money on Colorado to Portland, Maine flights?

What is the cheapest airline that flies from Colorado to Portland?

What airlines fly to Portland, Maine?

How long does it take to fly to Portland, Maine?

Cheap Colorado to Portland, Maine flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Portland, Maine

Best airlines flying from Colorado to Portland, Maine

Compare and see reviews for airlines that fly from Colorado to Portland, Maine with momondo

Traveling to a place near Portland?

Why use momondo?

An easier way to manage your Portland, Maine 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 Maine

Fly your favorite airline to Portland

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

Cabin classes currently available on flights to Portland

List of cabin classes available on flights landing in Portland. 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

Fly to other destinations from Colorado

According to popular flight searches on momondo this year

Complete your trip to Portland

Explore popular destinations other users love

According to popular flight searches on momondo this year