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 45% 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?

American Airlines, JetBlue, and Southwest are the most popular carriers operating from Colorado to Portland

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

As of September 2025, 13 flights take off from Colorado and land in Portland, Maine each week. The most common flight departure day for this route is Mon, with 23% of weekly flights taking off on this day.

How many flights depart from Colorado to Portland, Maine on average per day?

As of September 2025, there are 1 flights per day flying from Colorado to Portland, Maine. The most common time of day flights depart is 9:00AM, with 70% of flights taking off at noon.

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 45m on average. If you fly from Montrose (another popular airport in Colorado) to Boston, then the average flight time is 6h 14m.

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 6 as of September 2025.

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.

$85 Cheap Flights from Colorado to Portland in 2025/26

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Find the cheapest flights from Colorado to Portland

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

9:47 am - 9:21 pmDEN-PWM

9h 34m2 stops

5:59 pm - 11:09 pmPWM-DEN

7h 10m1 stop

$274American Airlines

Find Deal

Sat, Oct 18 - Sat, Oct 25

11:59 pm - 10:04 amDEN-PWM

8h 05m1 stop

3:20 pm - 6:21 pmPWM-DEN

5h 01mnonstop

$275United Airlines

Find Deal

Wed, Nov 5 - Sat, Nov 8

1:16 pm - 10:19 pmCOS-PWM

7h 03m1 stop

6:00 am - 12:11 pmPWM-COS

8h 11m1 stop

$277Delta

Find Deal

Tue, Oct 21 - Tue, Oct 28

9:52 am - 3:48 pmDEN-PWM

3h 56mnonstop

9:59 am - 4:35 pmPWM-DEN

8h 36m1 stop

$279United Airlines

Find Deal

Sat, Oct 18 - Sat, Oct 25

1:16 pm - 10:19 pmCOS-PWM

7h 03m1 stop

5:42 am - 12:11 pmPWM-COS

8h 29m2 stops

$282Delta

Find Deal

Tue, Oct 21 - Tue, Oct 28

7:15 am - 4:50 pmDEN-PWM

7h 35m1 stop

3:20 pm - 9:05 pmPWM-DEN

7h 45m1 stop

$285Southwest

Find Deal

Wed, Oct 29 - Sat, Nov 1

8:15 am - 7:55 pmDEN-PWM

9h 40m2 stops

3:20 pm - 9:05 pmPWM-DEN

7h 45m1 stop

$290Southwest

Find Deal

Wed, Oct 29 - Sat, Nov 1

11:59 pm - 5:38 pmDEN-PWM

15h 39m1 stop

2:36 pm - 9:21 pmPWM-DEN

8h 45m1 stop

$309Multiple Airlines

Find Deal

Fri, Oct 31 - Mon, Nov 3

9:05 am - 10:41 amDEN-PWM

23h 36m2 stops

2:36 pm - 9:21 pmPWM-DEN

8h 45m1 stop

$315Multiple Airlines

Find Deal

Fri, Oct 31 - Mon, Nov 3

11:59 pm - 11:04 pmDEN-PWM

21h 05m1 stop

7:09 am - 11:04 pmPWM-DEN

17h 55m1 stop

$343JetBlue

Find Deal

Sun, Oct 19 - Thu, Oct 23

United Airlines flights from Colorado to Portland, Maine

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

United Airlines

Nov 5

DEN11:59 pmDenver Intl

8h 05m

1 stop

PWM10:04 amPortland

Nov 8

PWM3:20 pmPortland

5h 01m

DEN6:21 pmDenver Intl

$275

Find similar

United Airlines

Oct 18

DEN9:52 amDenver Intl

3h 56m

PWM3:48 pmPortland

Oct 25

PWM9:59 amPortland

8h 36m

1 stop

DEN4:35 pmDenver Intl

$279

Find similar

United Airlines

Oct 24

COS6:00 amColorado Springs

6h 33m

1 stop

PWM2:33 pmPortland

Oct 25

PWM6:14 amPortland

7h 01m

1 stop

COS11:15 amColorado Springs

$280

Find similar

Delta flights from Colorado to Portland, Maine

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

Delta

Oct 21

COS1:16 pmColorado Springs

7h 03m

1 stop

PWM10:19 pmPortland

Oct 28

PWM6:00 amPortland

8h 11m

1 stop

COS12:11 pmColorado Springs

$277

Find similar

Delta

Oct 21

COS1:16 pmColorado Springs

7h 03m

1 stop

PWM10:19 pmPortland

Oct 28

PWM5:42 amPortland

8h 29m

2 stops

COS12:11 pmColorado Springs

$282

Find similar

Delta

Oct 18

DEN6:45 amDenver Intl

8h 10m

1 stop

PWM4:55 pmPortland

Oct 24

PWM2:38 pmPortland

9h 03m

1 stop

DEN9:41 pmDenver Intl

$289

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Sat 10/18

9:47 am-9:21 pm

2 stops9h 34m

Portland

Sat 10/25

5:59 pm-11:09 pm

1 stop7h 10m

$274

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Wed 11/5

11:59 pm-10:04 am

1 stop8h 05m

Portland

Sat 11/8

3:20 pm-6:21 pm

Nonstop5h 01m

$275

Colorado SpringsPortland

COS - PWM

COSPWM

Colorado Springs

Tue 10/21

1:16 pm-10:19 pm

1 stop7h 03m

Portland

Tue 10/28

6:00 am-12:11 pm

1 stop8h 11m

$277

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Sat 10/18

9:52 am-3:48 pm

Nonstop3h 56m

Portland

Sat 10/25

9:59 am-4:35 pm

1 stop8h 36m

$279

Colorado SpringsPortland

COS - PWM

COSPWM

Colorado Springs

Tue 10/21

1:16 pm-10:19 pm

1 stop7h 03m

Portland

Tue 10/28

5:42 am-12:11 pm

2 stops8h 29m

$282

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Wed 10/29

7:15 am-4:50 pm

1 stop7h 35m

Portland

Sat 11/1

3:20 pm-9:05 pm

1 stop7h 45m

$285

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Wed 10/29

8:15 am-7:55 pm

2 stops9h 40m

Portland

Sat 11/1

3:20 pm-9:05 pm

1 stop7h 45m

$290

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Fri 10/31

11:59 pm-5:38 pm

1 stop15h 39m

Portland

Mon 11/3

2:36 pm-9:21 pm

1 stop8h 45m

$309

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Fri 10/31

9:05 am-10:41 am

2 stops23h 36m

Portland

Mon 11/3

2:36 pm-9:21 pm

1 stop8h 45m

$315

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Sun 10/19

11:59 pm-11:04 pm

1 stop21h 05m

Portland

Thu 10/23

7:09 am-11:04 pm

1 stop17h 55m

$343

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 November. Flight prices, which tend to average around $378, 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 November, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $395.

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 Tuesday. momondo users have found tickets for Tuesday departures for as low as $585. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Thursday 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 $713.

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

In the evening is the cheapest time of day to fly from Colorado to Portland, Maine when you can find flight prices for as low as $368. Flying to Portland, Maine in the evening 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 $651. 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 $455 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 $352 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 34% 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	$203
Fastest flight time	3h 43m
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 $203. The best round-trip flight deal from Colorado to Portland, Maine found on momondo in the last 72 hours is $547.

The fastest flight from Colorado to Portland, Maine takes 3h 43m

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

There is 1 airport near Portland, Maine: 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 6 as of September 2025.
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 737-900, representing 51.13% of all bookings. The subsequent popular models are Boeing 737 MAX 9 at 20.30%, Airbus A319 at 8.27%, and Boeing 737-800 at 5.26%.

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 5.8 3,161 reviews	Search Frontier flights
American Airlines	PriceFrom $192	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
JetBlue	PriceFrom $249	Free Cancellation	Rating 7.2 2,914 reviews	Search JetBlue flights
Delta	PriceFrom $256	Free Cancellation	Rating 7.9 7,973 reviews	Search Delta flights
Southwest	PriceFrom $271	Free Cancellation	Rating 8.0 4,245 reviews	Search Southwest flights
United Airlines	PriceFrom $294	Free Cancellation	Rating 7.4 8,928 reviews	Search United Airlines flights

North Conway

Boothbay Harbor

Jackson

Conway

Freeport

Lewiston

Bartlett

Brunswick

Gorham

Auburn

Intervale

Windham

Bath

Oxford

Georgetown

Tamworth

Falmouth

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

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Cheap flights from Colorado to Portland from $85

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 10/25. 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 Colorado to Portland, Maine

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

Delta flights from Colorado to Portland, Maine

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

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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

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 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?

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?

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 34% on your flight if you consider stops on a Colorado to Portland, Maine flight.

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

American Airlines, JetBlue, and Southwest are the most popular carriers operating from Colorado to Portland

What airlines fly to Portland, Maine?

How many flights depart from Colorado to Portland, Maine on average per day?

As of September 2025, there are 1 flights per day flying from Colorado to Portland, Maine. The most common time of day flights depart is 9:00AM, with 70% of flights taking off at noon.

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

As of September 2025, 13 flights take off from Colorado and land in Portland, Maine each week. The most common flight departure day for this route is Mon, with 23% of weekly flights taking off on this day.

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

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

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

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

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

What is the most popular plane model from Colorado to 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?

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

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

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

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

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