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

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

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

As of November 2025, there are 1 flights per day flying from Portland, Maine to Colorado. The most common time of day flights depart is 3:00PM, with 87% of flights taking off in the afternoon.

What airlines fly to Colorado?

United Airlines, JetBlue and Delta are the top three most popular airlines that fly to Colorado from Portland, Maine according to our data. United Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Colorado. Keep in mind that there are 8 different airlines that fly to Colorado on a routine basis, so you have a few additional options to choose from.

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

7 flights are operational weekly from Portland, Maine to Colorado as of November 2025. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

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

Prices for flights from Portland Airport to Colorado are updated daily.

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

The number of operators available for flights from Portland Airport to Colorado is 6 as of November 2025.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Colorado.

What documentation or ID do you need to fly to Colorado?

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

$165 Cheap Flights from Portland to Colorado in 2025/26

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6:08 am - 12:36 pmPWM-COS

8h 28m1 stop

1:42 pm - 10:23 pmCOS-PWM

6h 41m1 stop

$277Delta

Find Deal

Sat, Dec 6 - Tue, Dec 9

6:08 am - 5:19 pmPWM-COS

13h 11m2 stops

1:42 pm - 10:23 pmCOS-PWM

6h 41m1 stop

$282Delta

Find Deal

Tue, Dec 9 - Wed, Dec 17

2:36 pm - 9:21 pmPWM-DEN

8h 45m1 stop

12:11 pm - 10:41 amDEN-PWM

20h 30m1 stop

$286Multiple Airlines

Find Deal

Mon, Nov 17 - Sun, Dec 7

6:05 pm - 9:10 amPWM-DEN

17h 05m2 stops

12:11 pm - 10:41 amDEN-PWM

20h 30m1 stop

$288Multiple Airlines

Find Deal

Fri, Dec 5 - Sun, Dec 7

6:00 am - 1:58 pmPWM-DEN

9h 58m1 stop

6:00 am - 2:22 pmDEN-PWM

6h 22m1 stop

$289United Airlines

Find Deal

Thu, Dec 4 - Sun, Dec 7

5:34 am - 3:45 pmPWM-COS

12h 11m2 stops

12:45 pm - 11:37 pmCOS-PWM

8h 52m2 stops

$290American Airlines

Find Deal

Wed, Dec 3 - Wed, Dec 10

5:46 am - 3:48 pmPWM-DEN

12h 02m2 stops

7:00 am - 3:27 pmDEN-PWM

6h 27m1 stop

$294American Airlines

Find Deal

Thu, Dec 4 - Mon, Dec 8

12:45 pm - 7:35 pmPWM-DEN

8h 50m2 stops

5:30 am - 3:15 pmDEN-PWM

7h 45m1 stop

$306Southwest

Find Deal

Wed, Feb 11 - Tue, Feb 17

5:30 am - 1:30 pmPWM-DEN

10h 00m2 stops

10:35 am - 10:15 pmDEN-PWM

9h 40m2 stops

$323Southwest

Find Deal

Wed, Dec 3 - Wed, Dec 10

4:25 pm - 9:57 pmPWM-COS

7h 32m1 stop

11:25 am - 11:09 pmCOS-PWM

9h 44m2 stops

$342United Airlines

Find Deal

Sat, Dec 6 - Tue, Dec 9

American Airlines flights from Portland, Maine to Colorado

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

American Airlines

Dec 3

PWM5:34 amPortland

12h 11m

2 stops

COS3:45 pmColorado Springs

Dec 10

COS12:45 pmColorado Springs

8h 52m

2 stops

PWM11:37 pmPortland

$290

Find similar

American Airlines

Dec 4

PWM5:46 amPortland

12h 02m

2 stops

DEN3:48 pmDenver Intl

Dec 8

DEN7:00 amDenver Intl

6h 27m

1 stop

PWM3:27 pmPortland

$294

Find similar

American Airlines

Dec 4

PWM5:46 amPortland

12h 02m

2 stops

DEN3:48 pmDenver Intl

Dec 7

DEN6:00 amDenver Intl

10h 15m

2 stops

PWM6:15 pmPortland

$299

Find similar

Southwest flights from Portland, Maine to Colorado

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

Southwest

Feb 11

PWM12:45 pmPortland

8h 50m

2 stops

DEN7:35 pmDenver Intl

Feb 17

DEN5:30 amDenver Intl

7h 45m

1 stop

PWM3:15 pmPortland

$306

Find similar

Southwest

Dec 3

PWM5:30 amPortland

10h 00m

2 stops

DEN1:30 pmDenver Intl

Dec 10

DEN10:35 amDenver Intl

9h 40m

2 stops

PWM10:15 pmPortland

$323

Find similar

Southwest

Feb 5

PWM1:00 pmPortland

11h 35m

2 stops

DEN10:35 pmDenver Intl

Feb 9

DEN11:55 pmDenver Intl

10h 15m

2 stops

PWM12:10 pmPortland

$335

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandColorado Springs

PWM - COS

PWMCOS

Portland

Sat 12/6

6:08 am-12:36 pm

1 stop8h 28m

Colorado Springs

Tue 12/9

1:42 pm-10:23 pm

1 stop6h 41m

$277

PortlandColorado Springs

PWM - COS

PWMCOS

Portland

Tue 12/9

6:08 am-5:19 pm

2 stops13h 11m

Colorado Springs

Wed 12/17

1:42 pm-10:23 pm

1 stop6h 41m

$282

PortlandDenver

PWM - DEN

PWMDEN

Portland

Mon 11/17

2:36 pm-9:21 pm

1 stop8h 45m

Denver Intl

Sun 12/7

12:11 pm-10:41 am

1 stop20h 30m

$286

PortlandDenver

PWM - DEN

PWMDEN

Portland

Fri 12/5

6:05 pm-9:10 am

2 stops17h 05m

Denver Intl

Sun 12/7

12:11 pm-10:41 am

1 stop20h 30m

$288

PortlandDenver

PWM - DEN

PWMDEN

Portland

Thu 12/4

6:00 am-1:58 pm

1 stop9h 58m

Denver Intl

Sun 12/7

6:00 am-2:22 pm

1 stop6h 22m

$289

PortlandColorado Springs

PWM - COS

PWMCOS

Portland

Wed 12/3

5:34 am-3:45 pm

2 stops12h 11m

Colorado Springs

Wed 12/10

12:45 pm-11:37 pm

2 stops8h 52m

$290

PortlandDenver

PWM - DEN

PWMDEN

Portland

Thu 12/4

5:46 am-3:48 pm

2 stops12h 02m

Denver Intl

Mon 12/8

7:00 am-3:27 pm

1 stop6h 27m

$294

PortlandDenver

PWM - DEN

PWMDEN

Portland

Wed 2/11

12:45 pm-7:35 pm

2 stops8h 50m

Denver Intl

Tue 2/17

5:30 am-3:15 pm

1 stop7h 45m

$306

PortlandDenver

PWM - DEN

PWMDEN

Portland

Wed 12/3

5:30 am-1:30 pm

2 stops10h 00m

Denver Intl

Wed 12/10

10:35 am-10:15 pm

2 stops9h 40m

$323

PortlandColorado Springs

PWM - COS

PWMCOS

Portland

Sat 12/6

4:25 pm-9:57 pm

1 stop7h 32m

Colorado Springs

Tue 12/9

11:25 am-11:09 pm

2 stops9h 44m

$342

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

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 Colorado?

The month of January is, on average, the cheapest month to fly to Colorado from Portland, Maine, with most prices found around $347. The month of April is another great option to travel to Colorado, with average flight prices from Portland, Maine averaging around $392.

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

The cheapest day to depart from Portland, Maine to Colorado is on a Friday when prices can be found for as low as $515. On the other hand, Sunday is the most expensive day to depart from Portland, Maine because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $762.

What is the cheapest time of day to depart on your flight to Colorado?

The cheapest time of day to fly to Colorado is in the evening when flights can be purchased for as low as $361. In the morning is when there is more demand to fly to Colorado, so prices are often more expensive at around $762 per ticket.

What is the cheapest Portland to Colorado flight route?

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

How far in advance should I book a flight to Colorado?

You are more likely to see cheaper flights to Colorado from Portland, Maine when booking weeks ahead of your departure date. In general, you can expect to find flights to Colorado for around $447 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Colorado from Portland, Maine for as low as $371 on momondo.

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

There are 4 cabin classes available to choose from on Portland to Colorado 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 Portland, Maine to Colorado flights?

You could potentially save up to 7% on your flight if you consider stops on a Portland, Maine to Colorado flight.

Cheap Portland, Maine to Colorado flight deals and tips

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

Best Price Found	$164
Fastest flight time	5h 01m
Direct flights	Every day
Airports in Colorado	1 airport

The best one-way flight to Colorado from Portland, Maine in the past 72 hours is $164. The best round-trip flight deal from Portland, Maine to Colorado found on momondo in the last 72 hours is $374.

The fastest flight from Portland, Maine to Colorado takes 5h 01m

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

There is 1 airport near Colorado: Denver Intl (DEN)

Search flight deals

When did momondo last update prices for flights from Portland Airport to Colorado?
Prices for flights from Portland Airport to Colorado are updated daily.
How many operators does momondo search for flights from Portland Airport to Colorado?
The number of operators available for flights from Portland Airport to Colorado is 6 as of November 2025.
How old do you have to be to fly from Portland Airport to Colorado?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Colorado.
What documentation or ID do you need to fly to Colorado?
The required travel and health documents for your Colorado 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 Colorado. 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 Colorado?
Based on momondo bookings for flights between Portland, Maine and Colorado, the leading plane model is Boeing 737-800, making up 81.12% of the total bookings. Other popular models include Airbus A319 with 7.69%, Boeing 737-700 with 2.10%, and Airbus A320-100/200 with 2.10%.

Best airlines flying from Portland, Maine to Colorado

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

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $149	Free Cancellation	Rating 5.8 3,115 reviews	Search Frontier flights
JetBlue	PriceFrom $226	Free Cancellation	Rating 7.2 2,908 reviews	Search JetBlue flights
American Airlines	PriceFrom $254	Free Cancellation	Rating 7.2 11,039 reviews	Search American Airlines flights
Delta	PriceFrom $256	Free Cancellation	Rating 7.9 8,004 reviews	Search Delta flights
United Airlines	PriceFrom $260	Free Cancellation	Rating 7.4 9,000 reviews	Search United Airlines flights
Southwest	PriceFrom $297	Free Cancellation	Rating 8.0 4,239 reviews	Search Southwest flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Colorado from Portland.

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

All flight searches from Portland to Colorado on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Colorado from Portland.

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

Of course. momondo tracks the price of Portland to Colorado flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Colorado 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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Popular cities in Colorado

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Cheap flights from Portland, Maine to Colorado from $165

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 Colorado departing on 11/20. 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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American Airlines flights from Portland, Maine to Colorado

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

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 Colorado?

The month of January is, on average, the cheapest month to fly to Colorado from Portland, Maine, with most prices found around $347. The month of April is another great option to travel to Colorado, with average flight prices from Portland, Maine averaging around $392.

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

What is the cheapest time of day to depart on your flight to Colorado?

The cheapest time of day to fly to Colorado is in the evening when flights can be purchased for as low as $361. In the morning is when there is more demand to fly to Colorado, so prices are often more expensive at around $762 per ticket.

What is the cheapest Portland to Colorado flight route?

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

How far in advance should I book a flight to Colorado?

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

There are 4 cabin classes available to choose from on Portland to Colorado 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 Portland, Maine to Colorado flights?

You could potentially save up to 7% on your flight if you consider stops on a Portland, Maine to Colorado flight.

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

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

What airlines fly to Colorado?

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

As of November 2025, there are 1 flights per day flying from Portland, Maine to Colorado. The most common time of day flights depart is 3:00PM, with 87% of flights taking off in the afternoon.

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

7 flights are operational weekly from Portland, Maine to Colorado as of November 2025. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

Cheap Portland, Maine to Colorado flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Colorado

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

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

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

What documentation or ID do you need to fly to Colorado?

What is the most popular plane model from Portland, Maine to Colorado?

Best airlines flying from Portland, Maine to Colorado

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

Why use momondo?

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

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

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

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

An easier way to manage your Colorado 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 Colorado

Popular cities in Colorado

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