What airlines fly to Colorado?

United Airlines, JetBlue and Southwest 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 46% of people opting to fly with this airline when traveling to Colorado. Keep in mind that there are 6 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 day?

As of June 2026, there are 1 flights per day flying from Portland, Maine to Colorado. The most common time of day flights depart is 3:00PM, with 100% of flights taking off in the afternoon.

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

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

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 June 2026. 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 5 as of June 2026.

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.

$119 Cheap Flights from Portland, Maine to Colorado in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland, Maine to Colorado

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 10:55 am

PWM

COS

6h 55m

1 stop

11:57 am - 9:46 pm

COS

PWM

7h 49m

1 stop

$299United Airlines

Wed, Oct 21 - Sat, Oct 24

6:00 am - 10:55 am

PWM

COS

6h 55m

1 stop

8:00 am - 7:24 pm

COS

PWM

9h 24m

2 stops

$304United Airlines

Wed, Oct 21 - Sat, Oct 24

6:19 am - 11:52 am

PWM

COS

7h 33m

1 stop

10:44 am - 12:43 am

COS

PWM

11h 59m

2 stops

$312American Airlines

Sat, Jul 4 - Tue, Jul 14

1:35 pm - 9:21 pm

PWM

COS

9h 46m

1 stop

1:40 pm - 10:23 pm

COS

PWM

6h 43m

1 stop

$317Delta

Mon, Oct 26 - Thu, Oct 29

10:00 am - 9:21 pm

PWM

COS

13h 21m

2 stops

1:40 pm - 10:23 pm

COS

PWM

6h 43m

1 stop

$322Delta

Mon, Oct 26 - Thu, Oct 29

1:45 pm - 8:52 pm

PWM

COS

9h 07m

1 stop

1:40 pm - 11:14 pm

COS

PWM

7h 34m

1 stop

$348Delta

Sat, Jul 4 - Tue, Jul 14

7:51 pm - 12:17 am

PWM

DEN

6h 26m

1 stop

11:55 pm - 10:31 am

DEN

PWM

8h 36m

1 stop

$417American Airlines

Sat, Jul 18 - Sat, Aug 1

5:55 am - 11:25 am

PWM

DEN

7h 30m

2 stops

8:10 am - 4:35 pm

DEN

PWM

6h 25m

1 stop

$418Southwest

Fri, Aug 14 - Sun, Aug 30

7:00 am - 8:20 am

PWM

DEN

27h 20m

2 stops

11:05 am - 10:55 pm

DEN

PWM

9h 50m

1 stop

$420Multiple Airlines

Wed, Jul 1 - Wed, Jul 8

5:35 am - 1:40 pm

PWM

DEN

10h 05m

2 stops

5:45 am - 2:40 pm

DEN

PWM

6h 55m

1 stop

$422Southwest

Fri, Jul 31 - Mon, Aug 3

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Southwest flights from Portland, Maine to Colorado

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

Southwest

Aug 14

PWM5:55 amPortland

7h 30m

2 stops

DEN11:25 amDenver Intl

Aug 30

DEN8:10 amDenver Intl

6h 25m

1 stop

PWM4:35 pmPortland

$418

Southwest

Jul 31

PWM5:35 amPortland

10h 05m

2 stops

DEN1:40 pmDenver Intl

Aug 3

DEN5:45 amDenver Intl

6h 55m

1 stop

PWM2:40 pmPortland

$422

Southwest

Oct 28

PWM1:30 pmPortland

7h 55m

2 stops

DEN7:25 pmDenver Intl

Nov 4

DEN10:55 amDenver Intl

8h 50m

2 stops

PWM9:45 pmPortland

$423

Delta flights from Portland, Maine to Colorado

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

Delta

Oct 26

PWM1:35 pmPortland

9h 46m

1 stop

COS9:21 pmColorado Springs

Oct 29

COS1:40 pmColorado Springs

6h 43m

1 stop

PWM10:23 pmPortland

$317

Delta

Oct 26

PWM10:00 amPortland

13h 21m

2 stops

COS9:21 pmColorado Springs

Oct 29

COS1:40 pmColorado Springs

6h 43m

1 stop

PWM10:23 pmPortland

$322

Delta

Jul 4

PWM1:45 pmPortland

9h 07m

1 stop

COS8:52 pmColorado Springs

Jul 14

COS1:40 pmColorado Springs

7h 34m

1 stop

PWM11:14 pmPortland

$348

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandColorado Springs

PWM - COS

PWMCOS

Portland

Wed 10/21

6:00 am-10:55 am

1 stop6h 55m

Colorado Springs

Sat 10/24

11:57 am-9:46 pm

1 stop7h 49m

$299

PortlandColorado Springs

PWM - COS

PWMCOS

Portland

Wed 10/21

6:00 am-10:55 am

1 stop6h 55m

Colorado Springs

Sat 10/24

8:00 am-7:24 pm

2 stops9h 24m

$304

PortlandColorado Springs

PWM - COS

PWMCOS

Portland

Sat 7/4

6:19 am-11:52 am

1 stop7h 33m

Colorado Springs

Tue 7/14

10:44 am-12:43 am

2 stops11h 59m

$312

PortlandColorado Springs

PWM - COS

PWMCOS

Portland

Mon 10/26

1:35 pm-9:21 pm

1 stop9h 46m

Colorado Springs

Thu 10/29

1:40 pm-10:23 pm

1 stop6h 43m

$317

PortlandColorado Springs

PWM - COS

PWMCOS

Portland

Mon 10/26

10:00 am-9:21 pm

2 stops13h 21m

Colorado Springs

Thu 10/29

1:40 pm-10:23 pm

1 stop6h 43m

$322

PortlandColorado Springs

PWM - COS

PWMCOS

Portland

Sat 7/4

1:45 pm-8:52 pm

1 stop9h 07m

Colorado Springs

Tue 7/14

1:40 pm-11:14 pm

1 stop7h 34m

$348

PortlandDenver

PWM - DEN

PWMDEN

Portland

Sat 7/18

7:51 pm-12:17 am

1 stop6h 26m

Denver Intl

Sat 8/1

11:55 pm-10:31 am

1 stop8h 36m

$417

Quickest round-trip

PortlandDenver

PWM - DEN

PWMDEN

Portland

Fri 8/14

5:55 am-11:25 am

2 stops7h 30m

Denver Intl

Sun 8/30

8:10 am-4:35 pm

1 stop6h 25m

$418

PortlandDenver

PWM - DEN

PWMDEN

Portland

Wed 7/1

7:00 am-8:20 am

2 stops27h 20m

Denver Intl

Wed 7/8

11:05 am-10:55 pm

1 stop9h 50m

$420

PortlandDenver

PWM - DEN

PWMDEN

Portland

Fri 7/31

5:35 am-1:40 pm

2 stops10h 05m

Denver Intl

Mon 8/3

5:45 am-2:40 pm

1 stop6h 55m

$422

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Showing 1-10 of 20 resultsSorted by cheapest first

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 September is, on average, the cheapest month to fly to Colorado from Portland, Maine, with most prices found around $126. The month of November is another great option to travel to Colorado, with average flight prices from Portland, Maine averaging around $178.

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 $492. 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 $834.

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 afternoon when flights can be purchased for as low as $549. In the morning is when there is more demand to fly to Colorado, so prices are often more expensive at around $878 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 from Portland, Maine 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 $448 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 $386 on momondo.

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

There are 4 cabin classes available to choose from on Portland, Maine 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 25% 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	$303
Fastest flight time	4h 33m
Direct flights	Every day
Airports in Colorado	87 airports

The best one-way flight to Colorado from Portland, Maine in the past 72 hours is $303. The best round-trip flight deal from Portland, Maine to Colorado found on momondo in the last 72 hours is $519.

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

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

There are 87 airports in Colorado. From Portland, Maine there are direct flights to Denver Intl (DEN).

Search flight deals

Frequently asked questions about flying from Portland, Maine to Colorado

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 5 as of June 2026.
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 MAX 8, making up 57.05% of the total bookings. Other popular models include Boeing 737-800 with 26.92%, Boeing 737-900 with 5.13%, and Airbus A320-100/200 with 1.92%.

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
United Airlines	PriceFrom $169	Free Cancellation	Rating 7.4 9,783 reviews	Search United Airlines flights
JetBlue	PriceFrom $242	Free Cancellation	Rating 7.1 2,977 reviews	Search JetBlue flights
Delta	PriceFrom $246	Free Cancellation	Rating 7.9 8,395 reviews	Search Delta flights
American Airlines	PriceFrom $253	Free Cancellation	Rating 7.1 11,642 reviews	Search American Airlines flights
Southwest	PriceFrom $300	Free Cancellation	Rating 7.9 4,246 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.

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Popular cities in Colorado

Flights to New Yorkfrom $72

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Flights to Orlandofrom $64

Flights to Miamifrom $79

Flights to Chicagofrom $73

Flights to San Franciscofrom $56

Flights to Las Vegasfrom $56

Flights to Washington, D.C.from $58

Flights to Bostonfrom $75

Flights to Atlantafrom $66

Flights to Fort Lauderdalefrom $55

Flights to Dallasfrom $82

Cheap flights from Portland, Maine to Colorado from $119

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 9/2. 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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Southwest flights from Portland, Maine to Colorado

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

Delta flights from Portland, Maine to Colorado

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

What is the cheapest month to fly to Colorado?

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?

What is the cheapest Portland to Colorado flight route?

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

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

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

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

What airlines fly to Colorado?

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

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

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

Frequently asked questions about flying 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?

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

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

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