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

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

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 48% 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 week?

1 flights are operational weekly from Portland, Maine to Colorado as of August 2026. The most popular departure day for this route is Mon, with 100% 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 August 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.

$118 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.

5:08 pm - 9:57 pmPWM Portland-COS Colorado Springs

6h 49m1 stop Chicago O'Hare Intl

7:00 am - 4:02 pmCOS Colorado Springs-PWM Portland

7h 02m1 stop Denver Intl

$255United Airlines

Tue, Nov 10 - Wed, Nov 11

5:08 pm - 9:57 pmPWM Portland-COS Colorado Springs

6h 49m1 stop Chicago O'Hare Intl

11:34 am - 11:21 pmCOS Colorado Springs-PWM Portland

9h 47m2 stops Denver Intl Newark

$260United Airlines

Tue, Nov 10 - Wed, Nov 11

5:40 am - 2:45 pmPWM Portland-COS Colorado Springs

11h 05m2 stops Baltimore/Washington Houston Hobby

12:40 pm - 10:35 pmCOS Colorado Springs-PWM Portland

7h 55m2 stops Chicago Midway Baltimore/Washington

$281Southwest

Tue, Oct 20 - Wed, Oct 21

4:23 pm - 11:31 pmPWM Portland-COS Colorado Springs

9h 08m2 stops Charlotte Douglas Dallas/Fort Worth

12:46 pm - 11:40 pmCOS Colorado Springs-PWM Portland

8h 54m1 stop Chicago O'Hare Intl

$311American Airlines

Mon, Oct 26 - Wed, Oct 28

2:03 pm - 8:40 pmPWM Portland-COS Colorado Springs

8h 37m1 stop Chicago O'Hare Intl

5:01 am - 1:05 pmCOS Colorado Springs-PWM Portland

6h 04m1 stop Chicago O'Hare Intl

$322American Airlines

Sat, Sep 19 - Tue, Sep 22

5:20 am - 1:25 pmPWM Portland-COS Colorado Springs

10h 05m2 stops Baltimore/Washington Chicago Midway

6:00 am - 5:20 pmCOS Colorado Springs-PWM Portland

9h 20m2 stops Dallas Love Field Nashville Intl

$322Southwest

Mon, Oct 26 - Wed, Oct 28

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

6:00 am - 6:17 pmPWM Portland-DEN Denver Intl

14h 17m1 stop Cincinnati Cinci./N. Kentucky

9:10 pm - 2:51 pmDEN Denver Intl-PWM Portland

15h 41m1 stop Minneapolis St Paul

$358Multiple Airlines

Fri, Sep 11 - Sat, Sep 19

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

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

5:03 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

$539United Airlines

Fri, Aug 14 - Sun, Aug 16

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

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

7h 26m1 stop Newark

8:35 am - 5:42 pmDEN Denver Intl-PWM Portland

7h 07m1 stop Chicago O'Hare Intl

$549United Airlines

Fri, Aug 14 - Sun, Aug 16

6:09 pm - 11:59 pmPWM Portland-DEN Denver Intl

7h 50m1 stop Chicago O'Hare Intl

2:21 pm - 10:48 pmDEN Denver Intl-PWM Portland

6h 27m1 stop Chicago O'Hare Intl

$549American Airlines

Thu, Aug 13 - Mon, Aug 17

8:00 am - 3:29 pmPWM Portland-DEN Denver Intl

9h 29m1 stop Dallas/Fort Worth

12:39 pm - 11:37 pmDEN Denver Intl-PWM Portland

8h 58m2 stops Dallas/Fort Worth Philadelphia

$554American Airlines

Thu, Aug 13 - Mon, Aug 17

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

7:00 am - 8:07 amPWM Portland-DEN Denver Intl

27h 07m2 stops Columbus Orlando

2:46 pm - 10:38 pmDEN Denver Intl-PWM Portland

29h 52m1 stop Cincinnati Cinci./N. Kentucky

$578Multiple Airlines

Wed, Aug 12 - Sun, Aug 16

7:00 am - 8:07 amPWM Portland-DEN Denver Intl

27h 07m2 stops Columbus Orlando

5:55 pm - 11:39 amDEN Denver Intl-PWM Portland

15h 44m1 stop Minneapolis St Paul

$584Multiple Airlines

Wed, Aug 12 - Wed, Aug 19

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Delta flights from Portland, Maine to Colorado

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

Delta

Sep 2

PWM2:53 pmPortland

9h 51m

1 stop

DEN10:44 pmDenver Intl

Sep 16

DEN6:35 amDenver Intl

7h 04m

1 stop

PWM3:39 pmPortland

$359

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

PWM6:05 amPortland

13h 18m

2 stops

DEN5:23 pmDenver Intl

Sep 16

DEN10:55 amDenver Intl

10h 33m

2 stops

PWM11:28 pmPortland

$369

Southwest flights from Portland, Maine to Colorado

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

Southwest

Oct 20

PWM5:40 amPortland

11h 05m

2 stops

COS2:45 pmColorado Springs

Oct 21

COS12:40 pmColorado Springs

7h 55m

2 stops

PWM10:35 pmPortland

$281

Southwest

Oct 14

PWM5:40 amPortland

8h 30m

2 stops

DEN12:10 pmDenver Intl

Oct 17

DEN12:30 amDenver Intl

7h 10m

1 stop

PWM9:40 amPortland

$380

Southwest

Sep 15

PWM5:45 amPortland

7h 40m

1 stop

DEN11:25 amDenver Intl

Sep 16

DEN11:15 amDenver Intl

8h 55m

2 stops

PWM10:10 pmPortland

$398

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

PortlandColorado Springs

PWM Portland - COS Colorado Springs

PWMCOS

Portland

Tue 11/10

5:08 pm-9:57 pm

1 stop6h 49m

Colorado Springs

Wed 11/11

7:00 am-4:02 pm

1 stop7h 02m

$255

PortlandColorado Springs

PWM Portland - COS Colorado Springs

PWMCOS

Portland

Tue 11/10

5:08 pm-9:57 pm

1 stop6h 49m

Colorado Springs

Wed 11/11

11:34 am-11:21 pm

2 stops9h 47m

$260

PortlandColorado Springs

PWM Portland - COS Colorado Springs

PWMCOS

Portland

Tue 10/20

5:40 am-2:45 pm

2 stops11h 05m

Colorado Springs

Wed 10/21

12:40 pm-10:35 pm

2 stops7h 55m

$281

PortlandColorado Springs

PWM Portland - COS Colorado Springs

PWMCOS

Portland

Mon 10/26

4:23 pm-11:31 pm

2 stops9h 08m

Colorado Springs

Wed 10/28

12:46 pm-11:40 pm

1 stop8h 54m

$311

PortlandColorado Springs

PWM Portland - COS Colorado Springs

PWMCOS

Portland

Sat 9/19

2:03 pm-8:40 pm

1 stop8h 37m

Colorado Springs

Tue 9/22

5:01 am-1:05 pm

1 stop6h 04m

$322

PortlandColorado Springs

PWM Portland - COS Colorado Springs

PWMCOS

Portland

Mon 10/26

5:20 am-1:25 pm

2 stops10h 05m

Colorado Springs

Wed 10/28

6:00 am-5:20 pm

2 stops9h 20m

$322

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

PortlandDenver

PWM Portland - DEN Denver Intl

PWMDEN

Portland

Fri 9/11

6:00 am-6:17 pm

1 stop14h 17m

Denver Intl

Sat 9/19

9:10 pm-2:51 pm

1 stop15h 41m

$358

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

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 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 November is, on average, the cheapest month to fly to Colorado from Portland, Maine, with most prices found around $384. The month of February is another great option to travel to Colorado, with average flight prices from Portland, Maine averaging around $386.

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 Tuesday when prices can be found for as low as $502. 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 $925.

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 $461 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 $419 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	$289
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 $289. The best round-trip flight deal from Portland, Maine to Colorado found on momondo in the last 72 hours is $482.

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 August 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 75.15% of the total bookings. Other popular models include Boeing 737-800 with 8.48%, Boeing 737 MAX 9 with 4.24%, and Boeing 737 with 3.03%.

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
JetBlue	PriceFrom $156	Free Cancellation	Rating 7.1 3,034 reviews	Search JetBlue flights
United Airlines	PriceFrom $169	Free Cancellation	Rating 7.4 10,104 reviews	Search United Airlines flights
American Airlines	PriceFrom $269	Free Cancellation	Rating 7.1 11,904 reviews	Search American Airlines flights
Delta	PriceFrom $288	Free Cancellation	Rating 7.8 8,505 reviews	Search Delta flights
Southwest	PriceFrom $322	Free Cancellation	Rating 8.0 4,220 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.